pin down grpc and related library in go.mod (#2222)

go.mod

@@ -24,8 +24,12 @@ replace (
 	github.com/matryer/moq => github.com/rancher/moq v0.0.0-20190404221404-ee5226d43009
 	github.com/opencontainers/runc => github.com/opencontainers/runc v1.0.0-rc92
 	github.com/opencontainers/runtime-spec => github.com/opencontainers/runtime-spec v1.0.3-0.20200728170252-4d89ac9fbff6
+	go.etcd.io/etcd => go.etcd.io/etcd v0.5.0-alpha.5.0.20200824191128-ae9734ed278b
+	golang.org/x/crypto => golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2
+	golang.org/x/net => golang.org/x/net v0.0.0-20190813141303-74dc4d7220e7
+	golang.org/x/sys => golang.org/x/sys v0.0.0-20190826190057-c7b8b68b1456
 	google.golang.org/genproto => google.golang.org/genproto v0.0.0-20200224152610-e50cd9704f63
-	google.golang.org/grpc => google.golang.org/grpc v1.27.1
+	google.golang.org/grpc => google.golang.org/grpc v1.26.0
 	gopkg.in/square/go-jose.v2 => gopkg.in/square/go-jose.v2 v2.2.2
 	k8s.io/api => github.com/rancher/kubernetes/staging/src/k8s.io/api v1.19.1-k3s1
 	k8s.io/apiextensions-apiserver => github.com/rancher/kubernetes/staging/src/k8s.io/apiextensions-apiserver v1.19.1-k3s1

vendor/go.etcd.io/etcd/pkg/fileutil/fileutil.go

@@ -49,7 +49,7 @@ func TouchDirAll(dir string) error {
 	if Exist(dir) {
 		err := CheckDirPermission(dir, PrivateDirMode)
 		if err != nil {
-			return err
+			plog.Warningf("check file permission: %v", err)
 		}
 	} else {
 		err := os.MkdirAll(dir, PrivateDirMode)
@@ -122,7 +122,7 @@ func CheckDirPermission(dir string, perm os.FileMode) error {
 	}
 	dirMode := dirInfo.Mode().Perm()
 	if dirMode != perm {
-		err = fmt.Errorf("directory %q,%q exist without desired file permission %q.", dir, dirInfo.Mode(), os.FileMode(PrivateDirMode))
+		err = fmt.Errorf("directory %q exist, but the permission is %q. The recommended permission is %q to prevent possible unprivileged access to the data.", dir, dirInfo.Mode(), os.FileMode(PrivateDirMode))
 		return err
 	}
 	return nil

vendor/go.etcd.io/etcd/version/version.go

@@ -26,7 +26,7 @@ import (
 var (
 	// MinClusterVersion is the min cluster version this etcd binary is compatible with.
 	MinClusterVersion = "3.0.0"
-	Version           = "3.4.12"
+	Version           = "3.4.13"
 	APIVersion        = "unknown"
 
 	// Git SHA Value will be set during build

vendor/golang.org/x/crypto/chacha20/chacha_arm64.go

-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build go1.11,!gccgo,!purego
-
-package chacha20
-
-const bufSize = 256
-
-//go:noescape
-func xorKeyStreamVX(dst, src []byte, key *[8]uint32, nonce *[3]uint32, counter *uint32)
-
-func (c *Cipher) xorKeyStreamBlocks(dst, src []byte) {
-	xorKeyStreamVX(dst, src, &c.key, &c.nonce, &c.counter)
-}

vendor/golang.org/x/crypto/chacha20/chacha_noasm.go

-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !arm64,!s390x,!ppc64le arm64,!go1.11 gccgo purego
-
-package chacha20
-
-const bufSize = blockSize
-
-func (s *Cipher) xorKeyStreamBlocks(dst, src []byte) {
-	s.xorKeyStreamBlocksGeneric(dst, src)
-}

vendor/golang.org/x/crypto/chacha20/chacha_ppc64le.go

-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !gccgo,!purego
-
-package chacha20
-
-const bufSize = 256
-
-//go:noescape
-func chaCha20_ctr32_vsx(out, inp *byte, len int, key *[8]uint32, counter *uint32)
-
-func (c *Cipher) xorKeyStreamBlocks(dst, src []byte) {
-	chaCha20_ctr32_vsx(&dst[0], &src[0], len(src), &c.key, &c.counter)
-}

vendor/golang.org/x/crypto/chacha20/chacha_ppc64le.s

-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Based on CRYPTOGAMS code with the following comment:
-// # ====================================================================
-// # Written by Andy Polyakov <appro@openssl.org> for the OpenSSL
-// # project. The module is, however, dual licensed under OpenSSL and
-// # CRYPTOGAMS licenses depending on where you obtain it. For further
-// # details see http://www.openssl.org/~appro/cryptogams/.
-// # ====================================================================
-
-// Code for the perl script that generates the ppc64 assembler
-// can be found in the cryptogams repository at the link below. It is based on
-// the original from openssl.
-
-// https://github.com/dot-asm/cryptogams/commit/a60f5b50ed908e91
-
-// The differences in this and the original implementation are
-// due to the calling conventions and initialization of constants.
-
-// +build !gccgo,!purego
-
-#include "textflag.h"
-
-#define OUT  R3
-#define INP  R4
-#define LEN  R5
-#define KEY  R6
-#define CNT  R7
-#define TMP  R15
-
-#define CONSTBASE  R16
-#define BLOCKS R17
-
-DATA consts<>+0x00(SB)/8, $0x3320646e61707865
-DATA consts<>+0x08(SB)/8, $0x6b20657479622d32
-DATA consts<>+0x10(SB)/8, $0x0000000000000001
-DATA consts<>+0x18(SB)/8, $0x0000000000000000
-DATA consts<>+0x20(SB)/8, $0x0000000000000004
-DATA consts<>+0x28(SB)/8, $0x0000000000000000
-DATA consts<>+0x30(SB)/8, $0x0a0b08090e0f0c0d
-DATA consts<>+0x38(SB)/8, $0x0203000106070405
-DATA consts<>+0x40(SB)/8, $0x090a0b080d0e0f0c
-DATA consts<>+0x48(SB)/8, $0x0102030005060704
-DATA consts<>+0x50(SB)/8, $0x6170786561707865
-DATA consts<>+0x58(SB)/8, $0x6170786561707865
-DATA consts<>+0x60(SB)/8, $0x3320646e3320646e
-DATA consts<>+0x68(SB)/8, $0x3320646e3320646e
-DATA consts<>+0x70(SB)/8, $0x79622d3279622d32
-DATA consts<>+0x78(SB)/8, $0x79622d3279622d32
-DATA consts<>+0x80(SB)/8, $0x6b2065746b206574
-DATA consts<>+0x88(SB)/8, $0x6b2065746b206574
-DATA consts<>+0x90(SB)/8, $0x0000000100000000
-DATA consts<>+0x98(SB)/8, $0x0000000300000002
-GLOBL consts<>(SB), RODATA, $0xa0
-
-//func chaCha20_ctr32_vsx(out, inp *byte, len int, key *[8]uint32, counter *uint32)
-TEXT ·chaCha20_ctr32_vsx(SB),NOSPLIT,$64-40
-	MOVD out+0(FP), OUT
-	MOVD inp+8(FP), INP
-	MOVD len+16(FP), LEN
-	MOVD key+24(FP), KEY
-	MOVD counter+32(FP), CNT
-
-	// Addressing for constants
-	MOVD $consts<>+0x00(SB), CONSTBASE
-	MOVD $16, R8
-	MOVD $32, R9
-	MOVD $48, R10
-	MOVD $64, R11
-	SRD $6, LEN, BLOCKS
-	// V16
-	LXVW4X (CONSTBASE)(R0), VS48
-	ADD $80,CONSTBASE
-
-	// Load key into V17,V18
-	LXVW4X (KEY)(R0), VS49
-	LXVW4X (KEY)(R8), VS50
-
-	// Load CNT, NONCE into V19
-	LXVW4X (CNT)(R0), VS51
-
-	// Clear V27
-	VXOR V27, V27, V27
-
-	// V28
-	LXVW4X (CONSTBASE)(R11), VS60
-
-	// splat slot from V19 -> V26
-	VSPLTW $0, V19, V26
-
-	VSLDOI $4, V19, V27, V19
-	VSLDOI $12, V27, V19, V19
-
-	VADDUWM V26, V28, V26
-
-	MOVD $10, R14
-	MOVD R14, CTR
-
-loop_outer_vsx:
-	// V0, V1, V2, V3
-	LXVW4X (R0)(CONSTBASE), VS32
-	LXVW4X (R8)(CONSTBASE), VS33
-	LXVW4X (R9)(CONSTBASE), VS34
-	LXVW4X (R10)(CONSTBASE), VS35
-
-	// splat values from V17, V18 into V4-V11
-	VSPLTW $0, V17, V4
-	VSPLTW $1, V17, V5
-	VSPLTW $2, V17, V6
-	VSPLTW $3, V17, V7
-	VSPLTW $0, V18, V8
-	VSPLTW $1, V18, V9
-	VSPLTW $2, V18, V10
-	VSPLTW $3, V18, V11
-
-	// VOR
-	VOR V26, V26, V12
-
-	// splat values from V19 -> V13, V14, V15
-	VSPLTW $1, V19, V13
-	VSPLTW $2, V19, V14
-	VSPLTW $3, V19, V15
-
-	// splat   const values
-	VSPLTISW $-16, V27
-	VSPLTISW $12, V28
-	VSPLTISW $8, V29
-	VSPLTISW $7, V30
-
-loop_vsx:
-	VADDUWM V0, V4, V0
-	VADDUWM V1, V5, V1
-	VADDUWM V2, V6, V2
-	VADDUWM V3, V7, V3
-
-	VXOR V12, V0, V12
-	VXOR V13, V1, V13
-	VXOR V14, V2, V14
-	VXOR V15, V3, V15
-
-	VRLW V12, V27, V12
-	VRLW V13, V27, V13
-	VRLW V14, V27, V14
-	VRLW V15, V27, V15
-
-	VADDUWM V8, V12, V8
-	VADDUWM V9, V13, V9
-	VADDUWM V10, V14, V10
-	VADDUWM V11, V15, V11
-
-	VXOR V4, V8, V4
-	VXOR V5, V9, V5
-	VXOR V6, V10, V6
-	VXOR V7, V11, V7
-
-	VRLW V4, V28, V4
-	VRLW V5, V28, V5
-	VRLW V6, V28, V6
-	VRLW V7, V28, V7
-
-	VADDUWM V0, V4, V0
-	VADDUWM V1, V5, V1
-	VADDUWM V2, V6, V2
-	VADDUWM V3, V7, V3
-
-	VXOR V12, V0, V12
-	VXOR V13, V1, V13
-	VXOR V14, V2, V14
-	VXOR V15, V3, V15
-
-	VRLW V12, V29, V12
-	VRLW V13, V29, V13
-	VRLW V14, V29, V14
-	VRLW V15, V29, V15
-
-	VADDUWM V8, V12, V8
-	VADDUWM V9, V13, V9
-	VADDUWM V10, V14, V10
-	VADDUWM V11, V15, V11
-
-	VXOR V4, V8, V4
-	VXOR V5, V9, V5
-	VXOR V6, V10, V6
-	VXOR V7, V11, V7
-
-	VRLW V4, V30, V4
-	VRLW V5, V30, V5
-	VRLW V6, V30, V6
-	VRLW V7, V30, V7
-
-	VADDUWM V0, V5, V0
-	VADDUWM V1, V6, V1
-	VADDUWM V2, V7, V2
-	VADDUWM V3, V4, V3
-
-	VXOR V15, V0, V15
-	VXOR V12, V1, V12
-	VXOR V13, V2, V13
-	VXOR V14, V3, V14
-
-	VRLW V15, V27, V15
-	VRLW V12, V27, V12
-	VRLW V13, V27, V13
-	VRLW V14, V27, V14
-
-	VADDUWM V10, V15, V10
-	VADDUWM V11, V12, V11
-	VADDUWM V8, V13, V8
-	VADDUWM V9, V14, V9
-
-	VXOR V5, V10, V5
-	VXOR V6, V11, V6
-	VXOR V7, V8, V7
-	VXOR V4, V9, V4
-
-	VRLW V5, V28, V5
-	VRLW V6, V28, V6
-	VRLW V7, V28, V7
-	VRLW V4, V28, V4
-
-	VADDUWM V0, V5, V0
-	VADDUWM V1, V6, V1
-	VADDUWM V2, V7, V2
-	VADDUWM V3, V4, V3
-
-	VXOR V15, V0, V15
-	VXOR V12, V1, V12
-	VXOR V13, V2, V13
-	VXOR V14, V3, V14
-
-	VRLW V15, V29, V15
-	VRLW V12, V29, V12
-	VRLW V13, V29, V13
-	VRLW V14, V29, V14
-
-	VADDUWM V10, V15, V10
-	VADDUWM V11, V12, V11
-	VADDUWM V8, V13, V8
-	VADDUWM V9, V14, V9
-
-	VXOR V5, V10, V5
-	VXOR V6, V11, V6
-	VXOR V7, V8, V7
-	VXOR V4, V9, V4
-
-	VRLW V5, V30, V5
-	VRLW V6, V30, V6
-	VRLW V7, V30, V7
-	VRLW V4, V30, V4
-	BC   16, LT, loop_vsx
-
-	VADDUWM V12, V26, V12
-
-	WORD $0x13600F8C		// VMRGEW V0, V1, V27
-	WORD $0x13821F8C		// VMRGEW V2, V3, V28
-
-	WORD $0x10000E8C		// VMRGOW V0, V1, V0
-	WORD $0x10421E8C		// VMRGOW V2, V3, V2
-
-	WORD $0x13A42F8C		// VMRGEW V4, V5, V29
-	WORD $0x13C63F8C		// VMRGEW V6, V7, V30
-
-	XXPERMDI VS32, VS34, $0, VS33
-	XXPERMDI VS32, VS34, $3, VS35
-	XXPERMDI VS59, VS60, $0, VS32
-	XXPERMDI VS59, VS60, $3, VS34
-
-	WORD $0x10842E8C		// VMRGOW V4, V5, V4
-	WORD $0x10C63E8C		// VMRGOW V6, V7, V6
-
-	WORD $0x13684F8C		// VMRGEW V8, V9, V27
-	WORD $0x138A5F8C		// VMRGEW V10, V11, V28
-
-	XXPERMDI VS36, VS38, $0, VS37
-	XXPERMDI VS36, VS38, $3, VS39
-	XXPERMDI VS61, VS62, $0, VS36
-	XXPERMDI VS61, VS62, $3, VS38
-
-	WORD $0x11084E8C		// VMRGOW V8, V9, V8
-	WORD $0x114A5E8C		// VMRGOW V10, V11, V10
-
-	WORD $0x13AC6F8C		// VMRGEW V12, V13, V29
-	WORD $0x13CE7F8C		// VMRGEW V14, V15, V30
-
-	XXPERMDI VS40, VS42, $0, VS41
-	XXPERMDI VS40, VS42, $3, VS43
-	XXPERMDI VS59, VS60, $0, VS40
-	XXPERMDI VS59, VS60, $3, VS42
-
-	WORD $0x118C6E8C		// VMRGOW V12, V13, V12
-	WORD $0x11CE7E8C		// VMRGOW V14, V15, V14
-
-	VSPLTISW $4, V27
-	VADDUWM V26, V27, V26
-
-	XXPERMDI VS44, VS46, $0, VS45
-	XXPERMDI VS44, VS46, $3, VS47
-	XXPERMDI VS61, VS62, $0, VS44
-	XXPERMDI VS61, VS62, $3, VS46
-
-	VADDUWM V0, V16, V0
-	VADDUWM V4, V17, V4
-	VADDUWM V8, V18, V8
-	VADDUWM V12, V19, V12
-
-	CMPU LEN, $64
-	BLT tail_vsx
-
-	// Bottom of loop
-	LXVW4X (INP)(R0), VS59
-	LXVW4X (INP)(R8), VS60
-	LXVW4X (INP)(R9), VS61
-	LXVW4X (INP)(R10), VS62
-
-	VXOR V27, V0, V27
-	VXOR V28, V4, V28
-	VXOR V29, V8, V29
-	VXOR V30, V12, V30
-
-	STXVW4X VS59, (OUT)(R0)
-	STXVW4X VS60, (OUT)(R8)
-	ADD     $64, INP
-	STXVW4X VS61, (OUT)(R9)
-	ADD     $-64, LEN
-	STXVW4X VS62, (OUT)(R10)
-	ADD     $64, OUT
-	BEQ     done_vsx
-
-	VADDUWM V1, V16, V0
-	VADDUWM V5, V17, V4
-	VADDUWM V9, V18, V8
-	VADDUWM V13, V19, V12
-
-	CMPU  LEN, $64
-	BLT   tail_vsx
-
-	LXVW4X (INP)(R0), VS59
-	LXVW4X (INP)(R8), VS60
-	LXVW4X (INP)(R9), VS61
-	LXVW4X (INP)(R10), VS62
-	VXOR   V27, V0, V27
-
-	VXOR V28, V4, V28
-	VXOR V29, V8, V29
-	VXOR V30, V12, V30
-
-	STXVW4X VS59, (OUT)(R0)
-	STXVW4X VS60, (OUT)(R8)
-	ADD     $64, INP
-	STXVW4X VS61, (OUT)(R9)
-	ADD     $-64, LEN
-	STXVW4X VS62, (OUT)(V10)
-	ADD     $64, OUT
-	BEQ     done_vsx
-
-	VADDUWM V2, V16, V0
-	VADDUWM V6, V17, V4
-	VADDUWM V10, V18, V8
-	VADDUWM V14, V19, V12
-
-	CMPU LEN, $64
-	BLT  tail_vsx
-
-	LXVW4X (INP)(R0), VS59
-	LXVW4X (INP)(R8), VS60
-	LXVW4X (INP)(R9), VS61
-	LXVW4X (INP)(R10), VS62
-
-	VXOR V27, V0, V27
-	VXOR V28, V4, V28
-	VXOR V29, V8, V29
-	VXOR V30, V12, V30
-
-	STXVW4X VS59, (OUT)(R0)
-	STXVW4X VS60, (OUT)(R8)
-	ADD     $64, INP
-	STXVW4X VS61, (OUT)(R9)
-	ADD     $-64, LEN
-	STXVW4X VS62, (OUT)(R10)
-	ADD     $64, OUT
-	BEQ     done_vsx
-
-	VADDUWM V3, V16, V0
-	VADDUWM V7, V17, V4
-	VADDUWM V11, V18, V8
-	VADDUWM V15, V19, V12
-
-	CMPU  LEN, $64
-	BLT   tail_vsx
-
-	LXVW4X (INP)(R0), VS59
-	LXVW4X (INP)(R8), VS60
-	LXVW4X (INP)(R9), VS61
-	LXVW4X (INP)(R10), VS62
-
-	VXOR V27, V0, V27
-	VXOR V28, V4, V28
-	VXOR V29, V8, V29
-	VXOR V30, V12, V30
-
-	STXVW4X VS59, (OUT)(R0)
-	STXVW4X VS60, (OUT)(R8)
-	ADD     $64, INP
-	STXVW4X VS61, (OUT)(R9)
-	ADD     $-64, LEN
-	STXVW4X VS62, (OUT)(R10)
-	ADD     $64, OUT
-
-	MOVD $10, R14
-	MOVD R14, CTR
-	BNE  loop_outer_vsx
-
-done_vsx:
-	// Increment counter by number of 64 byte blocks
-	MOVD (CNT), R14
-	ADD  BLOCKS, R14
-	MOVD R14, (CNT)
-	RET
-
-tail_vsx:
-	ADD  $32, R1, R11
-	MOVD LEN, CTR
-
-	// Save values on stack to copy from
-	STXVW4X VS32, (R11)(R0)
-	STXVW4X VS36, (R11)(R8)
-	STXVW4X VS40, (R11)(R9)
-	STXVW4X VS44, (R11)(R10)
-	ADD $-1, R11, R12
-	ADD $-1, INP
-	ADD $-1, OUT
-
-looptail_vsx:
-	// Copying the result to OUT
-	// in bytes.
-	MOVBZU 1(R12), KEY
-	MOVBZU 1(INP), TMP
-	XOR    KEY, TMP, KEY
-	MOVBU  KEY, 1(OUT)
-	BC     16, LT, looptail_vsx
-
-	// Clear the stack values
-	STXVW4X VS48, (R11)(R0)
-	STXVW4X VS48, (R11)(R8)
-	STXVW4X VS48, (R11)(R9)
-	STXVW4X VS48, (R11)(R10)
-	BR      done_vsx

vendor/golang.org/x/crypto/chacha20/chacha_s390x.go

-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !gccgo,!purego
-
-package chacha20
-
-import "golang.org/x/sys/cpu"
-
-var haveAsm = cpu.S390X.HasVX
-
-const bufSize = 256
-
-// xorKeyStreamVX is an assembly implementation of XORKeyStream. It must only
-// be called when the vector facility is available. Implementation in asm_s390x.s.
-//go:noescape
-func xorKeyStreamVX(dst, src []byte, key *[8]uint32, nonce *[3]uint32, counter *uint32)
-
-func (c *Cipher) xorKeyStreamBlocks(dst, src []byte) {
-	if cpu.S390X.HasVX {
-		xorKeyStreamVX(dst, src, &c.key, &c.nonce, &c.counter)
-	} else {
-		c.xorKeyStreamBlocksGeneric(dst, src)
-	}
-}

vendor/golang.org/x/crypto/cryptobyte/asn1.go

@@ -81,7 +81,7 @@ func (b *Builder) AddASN1BigInt(n *big.Int) {
 			for i := range bytes {
 				bytes[i] ^= 0xff
 			}
-			if len(bytes) == 0 || bytes[0]&0x80 == 0 {
+			if bytes[0]&0x80 == 0 {
 				c.add(0xff)
 			}
 			c.add(bytes...)
@@ -230,12 +230,12 @@ func (b *Builder) AddASN1(tag asn1.Tag, f BuilderContinuation) {
 
 // String
 
-// ReadASN1Boolean decodes an ASN.1 BOOLEAN and converts it to a boolean
+// ReadASN1Boolean decodes an ASN.1 INTEGER and converts it to a boolean
 // representation into out and advances. It reports whether the read
 // was successful.
 func (s *String) ReadASN1Boolean(out *bool) bool {
 	var bytes String
-	if !s.ReadASN1(&bytes, asn1.BOOLEAN) || len(bytes) != 1 {
+	if !s.ReadASN1(&bytes, asn1.INTEGER) || len(bytes) != 1 {
 		return false
 	}
 
@@ -470,8 +470,7 @@ func (s *String) ReadASN1GeneralizedTime(out *time.Time) bool {
 // It reports whether the read was successful.
 func (s *String) ReadASN1BitString(out *encoding_asn1.BitString) bool {
 	var bytes String
-	if !s.ReadASN1(&bytes, asn1.BIT_STRING) || len(bytes) == 0 ||
-		len(bytes)*8/8 != len(bytes) {
+	if !s.ReadASN1(&bytes, asn1.BIT_STRING) || len(bytes) == 0 {
 		return false
 	}
 
@@ -741,7 +740,7 @@ func (s *String) readASN1(out *String, outTag *asn1.Tag, skipHeader bool) bool {
 		length = headerLen + len32
 	}
 
-	if int(length) < 0 || !s.ReadBytes((*[]byte)(out), int(length)) {
+	if uint32(int(length)) != length || !s.ReadBytes((*[]byte)(out), int(length)) {
 		return false
 	}
 	if skipHeader && !out.Skip(int(headerLen)) {

vendor/golang.org/x/crypto/cryptobyte/string.go

@@ -24,7 +24,7 @@ type String []byte
 // read advances a String by n bytes and returns them. If less than n bytes
 // remain, it returns nil.
 func (s *String) read(n int) []byte {
-	if len(*s) < n || n < 0 {
+	if len(*s) < n {
 		return nil
 	}
 	v := (*s)[:n]
@@ -105,6 +105,11 @@ func (s *String) readLengthPrefixed(lenLen int, outChild *String) bool {
 		length = length << 8
 		length = length | uint32(b)
 	}
+	if int(length) < 0 {
+		// This currently cannot overflow because we read uint24 at most, but check
+		// anyway in case that changes in the future.
+		return false
+	}
 	v := s.read(int(length))
 	if v == nil {
 		return false

vendor/golang.org/x/crypto/curve25519/const_amd64.h

+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+#define REDMASK51     0x0007FFFFFFFFFFFF

vendor/golang.org/x/crypto/curve25519/const_amd64.s

+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+// +build amd64,!gccgo,!appengine
+
+// These constants cannot be encoded in non-MOVQ immediates.
+// We access them directly from memory instead.
+
+DATA ·_121666_213(SB)/8, $996687872
+GLOBL ·_121666_213(SB), 8, $8
+
+DATA ·_2P0(SB)/8, $0xFFFFFFFFFFFDA
+GLOBL ·_2P0(SB), 8, $8
+
+DATA ·_2P1234(SB)/8, $0xFFFFFFFFFFFFE
+GLOBL ·_2P1234(SB), 8, $8

vendor/golang.org/x/crypto/curve25519/cswap_amd64.s

+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build amd64,!gccgo,!appengine
+
+// func cswap(inout *[4][5]uint64, v uint64)
+TEXT ·cswap(SB),7,$0
+	MOVQ inout+0(FP),DI
+	MOVQ v+8(FP),SI
+
+	SUBQ $1, SI
+	NOTQ SI
+	MOVQ SI, X15
+	PSHUFD $0x44, X15, X15
+
+	MOVOU 0(DI), X0
+	MOVOU 16(DI), X2
+	MOVOU 32(DI), X4
+	MOVOU 48(DI), X6
+	MOVOU 64(DI), X8
+	MOVOU 80(DI), X1
+	MOVOU 96(DI), X3
+	MOVOU 112(DI), X5
+	MOVOU 128(DI), X7
+	MOVOU 144(DI), X9
+
+	MOVO X1, X10
+	MOVO X3, X11
+	MOVO X5, X12
+	MOVO X7, X13
+	MOVO X9, X14
+
+	PXOR X0, X10
+	PXOR X2, X11
+	PXOR X4, X12
+	PXOR X6, X13
+	PXOR X8, X14
+	PAND X15, X10
+	PAND X15, X11
+	PAND X15, X12
+	PAND X15, X13
+	PAND X15, X14
+	PXOR X10, X0
+	PXOR X10, X1
+	PXOR X11, X2
+	PXOR X11, X3
+	PXOR X12, X4
+	PXOR X12, X5
+	PXOR X13, X6
+	PXOR X13, X7
+	PXOR X14, X8
+	PXOR X14, X9
+
+	MOVOU X0, 0(DI)
+	MOVOU X2, 16(DI)
+	MOVOU X4, 32(DI)
+	MOVOU X6, 48(DI)
+	MOVOU X8, 64(DI)
+	MOVOU X1, 80(DI)
+	MOVOU X3, 96(DI)
+	MOVOU X5, 112(DI)
+	MOVOU X7, 128(DI)
+	MOVOU X9, 144(DI)
+	RET

vendor/golang.org/x/crypto/curve25519/curve25519_noasm.go

-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !amd64 gccgo appengine purego
-
-package curve25519
-
-func scalarMult(out, in, base *[32]byte) {
-	scalarMultGeneric(out, in, base)
-}

vendor/golang.org/x/crypto/curve25519/doc.go

+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package curve25519 provides an implementation of scalar multiplication on
+// the elliptic curve known as curve25519. See https://cr.yp.to/ecdh.html
+package curve25519 // import "golang.org/x/crypto/curve25519"
+
+// basePoint is the x coordinate of the generator of the curve.
+var basePoint = [32]byte{9, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
+
+// ScalarMult sets dst to the product in*base where dst and base are the x
+// coordinates of group points and all values are in little-endian form.
+func ScalarMult(dst, in, base *[32]byte) {
+	scalarMult(dst, in, base)
+}
+
+// ScalarBaseMult sets dst to the product in*base where dst and base are the x
+// coordinates of group points, base is the standard generator and all values
+// are in little-endian form.
+func ScalarBaseMult(dst, in *[32]byte) {
+	ScalarMult(dst, in, &basePoint)
+}

vendor/golang.org/x/crypto/curve25519/freeze_amd64.s

+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+// +build amd64,!gccgo,!appengine
+
+#include "const_amd64.h"
+
+// func freeze(inout *[5]uint64)
+TEXT ·freeze(SB),7,$0-8
+	MOVQ inout+0(FP), DI
+
+	MOVQ 0(DI),SI
+	MOVQ 8(DI),DX
+	MOVQ 16(DI),CX
+	MOVQ 24(DI),R8
+	MOVQ 32(DI),R9
+	MOVQ $REDMASK51,AX
+	MOVQ AX,R10
+	SUBQ $18,R10
+	MOVQ $3,R11
+REDUCELOOP:
+	MOVQ SI,R12
+	SHRQ $51,R12
+	ANDQ AX,SI
+	ADDQ R12,DX
+	MOVQ DX,R12
+	SHRQ $51,R12
+	ANDQ AX,DX
+	ADDQ R12,CX
+	MOVQ CX,R12
+	SHRQ $51,R12
+	ANDQ AX,CX
+	ADDQ R12,R8
+	MOVQ R8,R12
+	SHRQ $51,R12
+	ANDQ AX,R8
+	ADDQ R12,R9
+	MOVQ R9,R12
+	SHRQ $51,R12
+	ANDQ AX,R9
+	IMUL3Q $19,R12,R12
+	ADDQ R12,SI
+	SUBQ $1,R11
+	JA REDUCELOOP
+	MOVQ $1,R12
+	CMPQ R10,SI
+	CMOVQLT R11,R12
+	CMPQ AX,DX
+	CMOVQNE R11,R12
+	CMPQ AX,CX
+	CMOVQNE R11,R12
+	CMPQ AX,R8
+	CMOVQNE R11,R12
+	CMPQ AX,R9
+	CMOVQNE R11,R12
+	NEGQ R12
+	ANDQ R12,AX
+	ANDQ R12,R10
+	SUBQ R10,SI
+	SUBQ AX,DX
+	SUBQ AX,CX
+	SUBQ AX,R8
+	SUBQ AX,R9
+	MOVQ SI,0(DI)
+	MOVQ DX,8(DI)
+	MOVQ CX,16(DI)
+	MOVQ R8,24(DI)
+	MOVQ R9,32(DI)
+	RET

vendor/golang.org/x/crypto/curve25519/curve25519_amd64.go → vendor/golang.org/x/crypto/curve25519/mont25519_amd64.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build amd64,!gccgo,!appengine,!purego
+// +build amd64,!gccgo,!appengine
 
 package curve25519
 

vendor/golang.org/x/crypto/curve25519/mul_amd64.s

+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+// +build amd64,!gccgo,!appengine
+
+#include "const_amd64.h"
+
+// func mul(dest, a, b *[5]uint64)
+TEXT ·mul(SB),0,$16-24
+	MOVQ dest+0(FP), DI
+	MOVQ a+8(FP), SI
+	MOVQ b+16(FP), DX
+
+	MOVQ DX,CX
+	MOVQ 24(SI),DX
+	IMUL3Q $19,DX,AX
+	MOVQ AX,0(SP)
+	MULQ 16(CX)
+	MOVQ AX,R8
+	MOVQ DX,R9
+	MOVQ 32(SI),DX
+	IMUL3Q $19,DX,AX
+	MOVQ AX,8(SP)
+	MULQ 8(CX)
+	ADDQ AX,R8
+	ADCQ DX,R9
+	MOVQ 0(SI),AX
+	MULQ 0(CX)
+	ADDQ AX,R8
+	ADCQ DX,R9
+	MOVQ 0(SI),AX
+	MULQ 8(CX)
+	MOVQ AX,R10
+	MOVQ DX,R11
+	MOVQ 0(SI),AX
+	MULQ 16(CX)
+	MOVQ AX,R12
+	MOVQ DX,R13
+	MOVQ 0(SI),AX
+	MULQ 24(CX)
+	MOVQ AX,R14
+	MOVQ DX,R15
+	MOVQ 0(SI),AX
+	MULQ 32(CX)
+	MOVQ AX,BX
+	MOVQ DX,BP
+	MOVQ 8(SI),AX
+	MULQ 0(CX)
+	ADDQ AX,R10
+	ADCQ DX,R11
+	MOVQ 8(SI),AX
+	MULQ 8(CX)
+	ADDQ AX,R12
+	ADCQ DX,R13
+	MOVQ 8(SI),AX
+	MULQ 16(CX)
+	ADDQ AX,R14
+	ADCQ DX,R15
+	MOVQ 8(SI),AX
+	MULQ 24(CX)
+	ADDQ AX,BX
+	ADCQ DX,BP
+	MOVQ 8(SI),DX
+	IMUL3Q $19,DX,AX
+	MULQ 32(CX)
+	ADDQ AX,R8
+	ADCQ DX,R9
+	MOVQ 16(SI),AX
+	MULQ 0(CX)
+	ADDQ AX,R12
+	ADCQ DX,R13
+	MOVQ 16(SI),AX
+	MULQ 8(CX)
+	ADDQ AX,R14
+	ADCQ DX,R15
+	MOVQ 16(SI),AX
+	MULQ 16(CX)
+	ADDQ AX,BX
+	ADCQ DX,BP
+	MOVQ 16(SI),DX
+	IMUL3Q $19,DX,AX
+	MULQ 24(CX)
+	ADDQ AX,R8
+	ADCQ DX,R9
+	MOVQ 16(SI),DX
+	IMUL3Q $19,DX,AX
+	MULQ 32(CX)
+	ADDQ AX,R10
+	ADCQ DX,R11
+	MOVQ 24(SI),AX
+	MULQ 0(CX)
+	ADDQ AX,R14
+	ADCQ DX,R15
+	MOVQ 24(SI),AX
+	MULQ 8(CX)
+	ADDQ AX,BX
+	ADCQ DX,BP
+	MOVQ 0(SP),AX
+	MULQ 24(CX)
+	ADDQ AX,R10
+	ADCQ DX,R11
+	MOVQ 0(SP),AX
+	MULQ 32(CX)
+	ADDQ AX,R12
+	ADCQ DX,R13
+	MOVQ 32(SI),AX
+	MULQ 0(CX)
+	ADDQ AX,BX
+	ADCQ DX,BP
+	MOVQ 8(SP),AX
+	MULQ 16(CX)
+	ADDQ AX,R10
+	ADCQ DX,R11
+	MOVQ 8(SP),AX
+	MULQ 24(CX)
+	ADDQ AX,R12
+	ADCQ DX,R13
+	MOVQ 8(SP),AX
+	MULQ 32(CX)
+	ADDQ AX,R14
+	ADCQ DX,R15
+	MOVQ $REDMASK51,SI
+	SHLQ $13,R9:R8
+	ANDQ SI,R8
+	SHLQ $13,R11:R10
+	ANDQ SI,R10
+	ADDQ R9,R10
+	SHLQ $13,R13:R12
+	ANDQ SI,R12
+	ADDQ R11,R12
+	SHLQ $13,R15:R14
+	ANDQ SI,R14
+	ADDQ R13,R14
+	SHLQ $13,BP:BX
+	ANDQ SI,BX
+	ADDQ R15,BX
+	IMUL3Q $19,BP,DX
+	ADDQ DX,R8
+	MOVQ R8,DX
+	SHRQ $51,DX
+	ADDQ R10,DX
+	MOVQ DX,CX
+	SHRQ $51,DX
+	ANDQ SI,R8
+	ADDQ R12,DX
+	MOVQ DX,R9
+	SHRQ $51,DX
+	ANDQ SI,CX
+	ADDQ R14,DX
+	MOVQ DX,AX
+	SHRQ $51,DX
+	ANDQ SI,R9
+	ADDQ BX,DX
+	MOVQ DX,R10
+	SHRQ $51,DX
+	ANDQ SI,AX
+	IMUL3Q $19,DX,DX
+	ADDQ DX,R8
+	ANDQ SI,R10
+	MOVQ R8,0(DI)
+	MOVQ CX,8(DI)
+	MOVQ R9,16(DI)
+	MOVQ AX,24(DI)
+	MOVQ R10,32(DI)
+	RET

vendor/golang.org/x/crypto/curve25519/square_amd64.s

+// Copyright 2012 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// This code was translated into a form compatible with 6a from the public
+// domain sources in SUPERCOP: https://bench.cr.yp.to/supercop.html
+
+// +build amd64,!gccgo,!appengine
+
+#include "const_amd64.h"
+
+// func square(out, in *[5]uint64)
+TEXT ·square(SB),7,$0-16
+	MOVQ out+0(FP), DI
+	MOVQ in+8(FP), SI
+
+	MOVQ 0(SI),AX
+	MULQ 0(SI)
+	MOVQ AX,CX
+	MOVQ DX,R8
+	MOVQ 0(SI),AX
+	SHLQ $1,AX
+	MULQ 8(SI)
+	MOVQ AX,R9
+	MOVQ DX,R10
+	MOVQ 0(SI),AX
+	SHLQ $1,AX
+	MULQ 16(SI)
+	MOVQ AX,R11
+	MOVQ DX,R12
+	MOVQ 0(SI),AX
+	SHLQ $1,AX
+	MULQ 24(SI)
+	MOVQ AX,R13
+	MOVQ DX,R14
+	MOVQ 0(SI),AX
+	SHLQ $1,AX
+	MULQ 32(SI)
+	MOVQ AX,R15
+	MOVQ DX,BX
+	MOVQ 8(SI),AX
+	MULQ 8(SI)
+	ADDQ AX,R11
+	ADCQ DX,R12
+	MOVQ 8(SI),AX
+	SHLQ $1,AX
+	MULQ 16(SI)
+	ADDQ AX,R13
+	ADCQ DX,R14
+	MOVQ 8(SI),AX
+	SHLQ $1,AX
+	MULQ 24(SI)
+	ADDQ AX,R15
+	ADCQ DX,BX
+	MOVQ 8(SI),DX
+	IMUL3Q $38,DX,AX
+	MULQ 32(SI)
+	ADDQ AX,CX
+	ADCQ DX,R8
+	MOVQ 16(SI),AX
+	MULQ 16(SI)
+	ADDQ AX,R15
+	ADCQ DX,BX
+	MOVQ 16(SI),DX
+	IMUL3Q $38,DX,AX
+	MULQ 24(SI)
+	ADDQ AX,CX
+	ADCQ DX,R8
+	MOVQ 16(SI),DX
+	IMUL3Q $38,DX,AX
+	MULQ 32(SI)
+	ADDQ AX,R9
+	ADCQ DX,R10
+	MOVQ 24(SI),DX
+	IMUL3Q $19,DX,AX
+	MULQ 24(SI)
+	ADDQ AX,R9
+	ADCQ DX,R10
+	MOVQ 24(SI),DX
+	IMUL3Q $38,DX,AX
+	MULQ 32(SI)
+	ADDQ AX,R11
+	ADCQ DX,R12
+	MOVQ 32(SI),DX
+	IMUL3Q $19,DX,AX
+	MULQ 32(SI)
+	ADDQ AX,R13
+	ADCQ DX,R14
+	MOVQ $REDMASK51,SI
+	SHLQ $13,R8:CX
+	ANDQ SI,CX
+	SHLQ $13,R10:R9
+	ANDQ SI,R9
+	ADDQ R8,R9
+	SHLQ $13,R12:R11
+	ANDQ SI,R11
+	ADDQ R10,R11
+	SHLQ $13,R14:R13
+	ANDQ SI,R13
+	ADDQ R12,R13
+	SHLQ $13,BX:R15
+	ANDQ SI,R15
+	ADDQ R14,R15
+	IMUL3Q $19,BX,DX
+	ADDQ DX,CX
+	MOVQ CX,DX
+	SHRQ $51,DX
+	ADDQ R9,DX
+	ANDQ SI,CX
+	MOVQ DX,R8
+	SHRQ $51,DX
+	ADDQ R11,DX
+	ANDQ SI,R8
+	MOVQ DX,R9
+	SHRQ $51,DX
+	ADDQ R13,DX
+	ANDQ SI,R9
+	MOVQ DX,AX
+	SHRQ $51,DX
+	ADDQ R15,DX
+	ANDQ SI,AX
+	MOVQ DX,R10
+	SHRQ $51,DX
+	IMUL3Q $19,DX,DX
+	ADDQ DX,CX
+	ANDQ SI,R10
+	MOVQ CX,0(DI)
+	MOVQ R8,8(DI)
+	MOVQ R9,16(DI)
+	MOVQ AX,24(DI)
+	MOVQ R10,32(DI)
+	RET

vendor/golang.org/x/crypto/ed25519/ed25519.go

@@ -2,11 +2,6 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// In Go 1.13, the ed25519 package was promoted to the standard library as
-// crypto/ed25519, and this package became a wrapper for the standard library one.
-//
-// +build !go1.13
-
 // Package ed25519 implements the Ed25519 signature algorithm. See
 // https://ed25519.cr.yp.to/.
 //

vendor/golang.org/x/crypto/ed25519/ed25519_go113.go

-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build go1.13
-
-// Package ed25519 implements the Ed25519 signature algorithm. See
-// https://ed25519.cr.yp.to/.
-//
-// These functions are also compatible with the “Ed25519” function defined in
-// RFC 8032. However, unlike RFC 8032's formulation, this package's private key
-// representation includes a public key suffix to make multiple signing
-// operations with the same key more efficient. This package refers to the RFC
-// 8032 private key as the “seed”.
-//
-// Beginning with Go 1.13, the functionality of this package was moved to the
-// standard library as crypto/ed25519. This package only acts as a compatibility
-// wrapper.
-package ed25519
-
-import (
-	"crypto/ed25519"
-	"io"
-)
-
-const (
-	// PublicKeySize is the size, in bytes, of public keys as used in this package.
-	PublicKeySize = 32
-	// PrivateKeySize is the size, in bytes, of private keys as used in this package.
-	PrivateKeySize = 64
-	// SignatureSize is the size, in bytes, of signatures generated and verified by this package.
-	SignatureSize = 64
-	// SeedSize is the size, in bytes, of private key seeds. These are the private key representations used by RFC 8032.
-	SeedSize = 32
-)
-
-// PublicKey is the type of Ed25519 public keys.
-//
-// This type is an alias for crypto/ed25519's PublicKey type.
-// See the crypto/ed25519 package for the methods on this type.
-type PublicKey = ed25519.PublicKey
-
-// PrivateKey is the type of Ed25519 private keys. It implements crypto.Signer.
-//
-// This type is an alias for crypto/ed25519's PrivateKey type.
-// See the crypto/ed25519 package for the methods on this type.
-type PrivateKey = ed25519.PrivateKey
-
-// GenerateKey generates a public/private key pair using entropy from rand.
-// If rand is nil, crypto/rand.Reader will be used.
-func GenerateKey(rand io.Reader) (PublicKey, PrivateKey, error) {
-	return ed25519.GenerateKey(rand)
-}
-
-// NewKeyFromSeed calculates a private key from a seed. It will panic if
-// len(seed) is not SeedSize. This function is provided for interoperability
-// with RFC 8032. RFC 8032's private keys correspond to seeds in this
-// package.
-func NewKeyFromSeed(seed []byte) PrivateKey {
-	return ed25519.NewKeyFromSeed(seed)
-}
-
-// Sign signs the message with privateKey and returns a signature. It will
-// panic if len(privateKey) is not PrivateKeySize.
-func Sign(privateKey PrivateKey, message []byte) []byte {
-	return ed25519.Sign(privateKey, message)
-}
-
-// Verify reports whether sig is a valid signature of message by publicKey. It
-// will panic if len(publicKey) is not PublicKeySize.
-func Verify(publicKey PublicKey, message, sig []byte) bool {
-	return ed25519.Verify(publicKey, message, sig)
-}

vendor/golang.org/x/crypto/chacha20/chacha_arm64.s → vendor/golang.org/x/crypto/internal/chacha20/asm_arm64.s

@@ -2,7 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build go1.11,!gccgo,!purego
+// +build go1.11
+// +build !gccgo,!appengine
 
 #include "textflag.h"
 

vendor/golang.org/x/crypto/internal/chacha20/chacha_arm64.go

+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build go1.11
+// +build !gccgo
+
+package chacha20
+
+const (
+	haveAsm = true
+	bufSize = 256
+)
+
+//go:noescape
+func xorKeyStreamVX(dst, src []byte, key *[8]uint32, nonce *[3]uint32, counter *uint32)
+
+func (c *Cipher) xorKeyStreamAsm(dst, src []byte) {
+
+	if len(src) >= bufSize {
+		xorKeyStreamVX(dst, src, &c.key, &c.nonce, &c.counter)
+	}
+
+	if len(src)%bufSize != 0 {
+		i := len(src) - len(src)%bufSize
+		c.buf = [bufSize]byte{}
+		copy(c.buf[:], src[i:])
+		xorKeyStreamVX(c.buf[:], c.buf[:], &c.key, &c.nonce, &c.counter)
+		c.len = bufSize - copy(dst[i:], c.buf[:len(src)%bufSize])
+	}
+}

vendor/golang.org/x/crypto/internal/chacha20/chacha_generic.go

+// Copyright 2016 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// Package ChaCha20 implements the core ChaCha20 function as specified
+// in https://tools.ietf.org/html/rfc7539#section-2.3.
+package chacha20
+
+import (
+	"crypto/cipher"
+	"encoding/binary"
+
+	"golang.org/x/crypto/internal/subtle"
+)
+
+// assert that *Cipher implements cipher.Stream
+var _ cipher.Stream = (*Cipher)(nil)
+
+// Cipher is a stateful instance of ChaCha20 using a particular key
+// and nonce. A *Cipher implements the cipher.Stream interface.
+type Cipher struct {
+	key     [8]uint32
+	counter uint32 // incremented after each block
+	nonce   [3]uint32
+	buf     [bufSize]byte // buffer for unused keystream bytes
+	len     int           // number of unused keystream bytes at end of buf
+}
+
+// New creates a new ChaCha20 stream cipher with the given key and nonce.
+// The initial counter value is set to 0.
+func New(key [8]uint32, nonce [3]uint32) *Cipher {
+	return &Cipher{key: key, nonce: nonce}
+}
+
+// ChaCha20 constants spelling "expand 32-byte k"
+const (
+	j0 uint32 = 0x61707865
+	j1 uint32 = 0x3320646e
+	j2 uint32 = 0x79622d32
+	j3 uint32 = 0x6b206574
+)
+
+func quarterRound(a, b, c, d uint32) (uint32, uint32, uint32, uint32) {
+	a += b
+	d ^= a
+	d = (d << 16) | (d >> 16)
+	c += d
+	b ^= c
+	b = (b << 12) | (b >> 20)
+	a += b
+	d ^= a
+	d = (d << 8) | (d >> 24)
+	c += d
+	b ^= c
+	b = (b << 7) | (b >> 25)
+	return a, b, c, d
+}
+
+// XORKeyStream XORs each byte in the given slice with a byte from the
+// cipher's key stream. Dst and src must overlap entirely or not at all.
+//
+// If len(dst) < len(src), XORKeyStream will panic. It is acceptable
+// to pass a dst bigger than src, and in that case, XORKeyStream will
+// only update dst[:len(src)] and will not touch the rest of dst.
+//
+// Multiple calls to XORKeyStream behave as if the concatenation of
+// the src buffers was passed in a single run. That is, Cipher
+// maintains state and does not reset at each XORKeyStream call.
+func (s *Cipher) XORKeyStream(dst, src []byte) {
+	if len(dst) < len(src) {
+		panic("chacha20: output smaller than input")
+	}
+	if subtle.InexactOverlap(dst[:len(src)], src) {
+		panic("chacha20: invalid buffer overlap")
+	}
+
+	// xor src with buffered keystream first
+	if s.len != 0 {
+		buf := s.buf[len(s.buf)-s.len:]
+		if len(src) < len(buf) {
+			buf = buf[:len(src)]
+		}
+		td, ts := dst[:len(buf)], src[:len(buf)] // BCE hint
+		for i, b := range buf {
+			td[i] = ts[i] ^ b
+		}
+		s.len -= len(buf)
+		if s.len != 0 {
+			return
+		}
+		s.buf = [len(s.buf)]byte{} // zero the empty buffer
+		src = src[len(buf):]
+		dst = dst[len(buf):]
+	}
+
+	if len(src) == 0 {
+		return
+	}
+	if haveAsm {
+		if uint64(len(src))+uint64(s.counter)*64 > (1<<38)-64 {
+			panic("chacha20: counter overflow")
+		}
+		s.xorKeyStreamAsm(dst, src)
+		return
+	}
+
+	// set up a 64-byte buffer to pad out the final block if needed
+	// (hoisted out of the main loop to avoid spills)
+	rem := len(src) % 64  // length of final block
+	fin := len(src) - rem // index of final block
+	if rem > 0 {
+		copy(s.buf[len(s.buf)-64:], src[fin:])
+	}
+
+	// pre-calculate most of the first round
+	s1, s5, s9, s13 := quarterRound(j1, s.key[1], s.key[5], s.nonce[0])
+	s2, s6, s10, s14 := quarterRound(j2, s.key[2], s.key[6], s.nonce[1])
+	s3, s7, s11, s15 := quarterRound(j3, s.key[3], s.key[7], s.nonce[2])
+
+	n := len(src)
+	src, dst = src[:n:n], dst[:n:n] // BCE hint
+	for i := 0; i < n; i += 64 {
+		// calculate the remainder of the first round
+		s0, s4, s8, s12 := quarterRound(j0, s.key[0], s.key[4], s.counter)
+
+		// execute the second round
+		x0, x5, x10, x15 := quarterRound(s0, s5, s10, s15)
+		x1, x6, x11, x12 := quarterRound(s1, s6, s11, s12)
+		x2, x7, x8, x13 := quarterRound(s2, s7, s8, s13)
+		x3, x4, x9, x14 := quarterRound(s3, s4, s9, s14)
+
+		// execute the remaining 18 rounds
+		for i := 0; i < 9; i++ {
+			x0, x4, x8, x12 = quarterRound(x0, x4, x8, x12)
+			x1, x5, x9, x13 = quarterRound(x1, x5, x9, x13)
+			x2, x6, x10, x14 = quarterRound(x2, x6, x10, x14)
+			x3, x7, x11, x15 = quarterRound(x3, x7, x11, x15)
+
+			x0, x5, x10, x15 = quarterRound(x0, x5, x10, x15)
+			x1, x6, x11, x12 = quarterRound(x1, x6, x11, x12)
+			x2, x7, x8, x13 = quarterRound(x2, x7, x8, x13)
+			x3, x4, x9, x14 = quarterRound(x3, x4, x9, x14)
+		}
+
+		x0 += j0
+		x1 += j1
+		x2 += j2
+		x3 += j3
+
+		x4 += s.key[0]
+		x5 += s.key[1]
+		x6 += s.key[2]
+		x7 += s.key[3]
+		x8 += s.key[4]
+		x9 += s.key[5]
+		x10 += s.key[6]
+		x11 += s.key[7]
+
+		x12 += s.counter
+		x13 += s.nonce[0]
+		x14 += s.nonce[1]
+		x15 += s.nonce[2]
+
+		// increment the counter
+		s.counter += 1
+		if s.counter == 0 {
+			panic("chacha20: counter overflow")
+		}
+
+		// pad to 64 bytes if needed
+		in, out := src[i:], dst[i:]
+		if i == fin {
+			// src[fin:] has already been copied into s.buf before
+			// the main loop
+			in, out = s.buf[len(s.buf)-64:], s.buf[len(s.buf)-64:]
+		}
+		in, out = in[:64], out[:64] // BCE hint
+
+		// XOR the key stream with the source and write out the result
+		xor(out[0:], in[0:], x0)
+		xor(out[4:], in[4:], x1)
+		xor(out[8:], in[8:], x2)
+		xor(out[12:], in[12:], x3)
+		xor(out[16:], in[16:], x4)
+		xor(out[20:], in[20:], x5)
+		xor(out[24:], in[24:], x6)
+		xor(out[28:], in[28:], x7)
+		xor(out[32:], in[32:], x8)
+		xor(out[36:], in[36:], x9)
+		xor(out[40:], in[40:], x10)
+		xor(out[44:], in[44:], x11)
+		xor(out[48:], in[48:], x12)
+		xor(out[52:], in[52:], x13)
+		xor(out[56:], in[56:], x14)
+		xor(out[60:], in[60:], x15)
+	}
+	// copy any trailing bytes out of the buffer and into dst
+	if rem != 0 {
+		s.len = 64 - rem
+		copy(dst[fin:], s.buf[len(s.buf)-64:])
+	}
+}
+
+// Advance discards bytes in the key stream until the next 64 byte block
+// boundary is reached and updates the counter accordingly. If the key
+// stream is already at a block boundary no bytes will be discarded and
+// the counter will be unchanged.
+func (s *Cipher) Advance() {
+	s.len -= s.len % 64
+	if s.len == 0 {
+		s.buf = [len(s.buf)]byte{}
+	}
+}
+
+// XORKeyStream crypts bytes from in to out using the given key and counters.
+// In and out must overlap entirely or not at all. Counter contains the raw
+// ChaCha20 counter bytes (i.e. block counter followed by nonce).
+func XORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte) {
+	s := Cipher{
+		key: [8]uint32{
+			binary.LittleEndian.Uint32(key[0:4]),
+			binary.LittleEndian.Uint32(key[4:8]),
+			binary.LittleEndian.Uint32(key[8:12]),
+			binary.LittleEndian.Uint32(key[12:16]),
+			binary.LittleEndian.Uint32(key[16:20]),
+			binary.LittleEndian.Uint32(key[20:24]),
+			binary.LittleEndian.Uint32(key[24:28]),
+			binary.LittleEndian.Uint32(key[28:32]),
+		},
+		nonce: [3]uint32{
+			binary.LittleEndian.Uint32(counter[4:8]),
+			binary.LittleEndian.Uint32(counter[8:12]),
+			binary.LittleEndian.Uint32(counter[12:16]),
+		},
+		counter: binary.LittleEndian.Uint32(counter[0:4]),
+	}
+	s.XORKeyStream(out, in)
+}
+
+// HChaCha20 uses the ChaCha20 core to generate a derived key from a key and a
+// nonce. It should only be used as part of the XChaCha20 construction.
+func HChaCha20(key *[8]uint32, nonce *[4]uint32) [8]uint32 {
+	x0, x1, x2, x3 := j0, j1, j2, j3
+	x4, x5, x6, x7 := key[0], key[1], key[2], key[3]
+	x8, x9, x10, x11 := key[4], key[5], key[6], key[7]
+	x12, x13, x14, x15 := nonce[0], nonce[1], nonce[2], nonce[3]
+
+	for i := 0; i < 10; i++ {
+		x0, x4, x8, x12 = quarterRound(x0, x4, x8, x12)
+		x1, x5, x9, x13 = quarterRound(x1, x5, x9, x13)
+		x2, x6, x10, x14 = quarterRound(x2, x6, x10, x14)
+		x3, x7, x11, x15 = quarterRound(x3, x7, x11, x15)
+
+		x0, x5, x10, x15 = quarterRound(x0, x5, x10, x15)
+		x1, x6, x11, x12 = quarterRound(x1, x6, x11, x12)
+		x2, x7, x8, x13 = quarterRound(x2, x7, x8, x13)
+		x3, x4, x9, x14 = quarterRound(x3, x4, x9, x14)
+	}
+
+	var out [8]uint32
+	out[0], out[1], out[2], out[3] = x0, x1, x2, x3
+	out[4], out[5], out[6], out[7] = x12, x13, x14, x15
+	return out
+}

vendor/golang.org/x/crypto/internal/chacha20/chacha_noasm.go

+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build !arm64,!s390x arm64,!go1.11 gccgo appengine
+
+package chacha20
+
+const (
+	bufSize = 64
+	haveAsm = false
+)
+
+func (*Cipher) xorKeyStreamAsm(dst, src []byte) {
+	panic("not implemented")
+}

vendor/golang.org/x/crypto/internal/chacha20/chacha_s390x.go

+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build s390x,!gccgo,!appengine
+
+package chacha20
+
+import (
+	"golang.org/x/sys/cpu"
+)
+
+var haveAsm = cpu.S390X.HasVX
+
+const bufSize = 256
+
+// xorKeyStreamVX is an assembly implementation of XORKeyStream. It must only
+// be called when the vector facility is available.
+// Implementation in asm_s390x.s.
+//go:noescape
+func xorKeyStreamVX(dst, src []byte, key *[8]uint32, nonce *[3]uint32, counter *uint32, buf *[256]byte, len *int)
+
+func (c *Cipher) xorKeyStreamAsm(dst, src []byte) {
+	xorKeyStreamVX(dst, src, &c.key, &c.nonce, &c.counter, &c.buf, &c.len)
+}
+
+// EXRL targets, DO NOT CALL!
+func mvcSrcToBuf()
+func mvcBufToDst()

vendor/golang.org/x/crypto/chacha20/chacha_s390x.s → vendor/golang.org/x/crypto/internal/chacha20/chacha_s390x.s

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !gccgo,!purego
+// +build s390x,!gccgo,!appengine
 
 #include "go_asm.h"
 #include "textflag.h"
@@ -24,6 +24,15 @@ DATA ·constants<>+0x14(SB)/4, $0x3320646e
 DATA ·constants<>+0x18(SB)/4, $0x79622d32
 DATA ·constants<>+0x1c(SB)/4, $0x6b206574
 
+// EXRL targets:
+TEXT ·mvcSrcToBuf(SB), NOFRAME|NOSPLIT, $0
+	MVC $1, (R1), (R8)
+	RET
+
+TEXT ·mvcBufToDst(SB), NOFRAME|NOSPLIT, $0
+	MVC $1, (R8), (R9)
+	RET
+
 #define BSWAP V5
 #define J0    V6
 #define KEY0  V7
@@ -135,7 +144,7 @@ DATA ·constants<>+0x1c(SB)/4, $0x6b206574
 	VMRHF v, w, c \ // c = {a[2], b[2], c[2], d[2]}
 	VMRLF v, w, d // d = {a[3], b[3], c[3], d[3]}
 
-// func xorKeyStreamVX(dst, src []byte, key *[8]uint32, nonce *[3]uint32, counter *uint32)
+// func xorKeyStreamVX(dst, src []byte, key *[8]uint32, nonce *[3]uint32, counter *uint32, buf *[256]byte, len *int)
 TEXT ·xorKeyStreamVX(SB), NOSPLIT, $0
 	MOVD $·constants<>(SB), R1
 	MOVD dst+0(FP), R2         // R2=&dst[0]
@@ -143,10 +152,25 @@ TEXT ·xorKeyStreamVX(SB), NOSPLIT, $0
 	MOVD key+48(FP), R5        // R5=key
 	MOVD nonce+56(FP), R6      // R6=nonce
 	MOVD counter+64(FP), R7    // R7=counter
+	MOVD buf+72(FP), R8        // R8=buf
+	MOVD len+80(FP), R9        // R9=len
 
 	// load BSWAP and J0
 	VLM (R1), BSWAP, J0
 
+	// set up tail buffer
+	ADD     $-1, R4, R12
+	MOVBZ   R12, R12
+	CMPUBEQ R12, $255, aligned
+	MOVD    R4, R1
+	AND     $~255, R1
+	MOVD    $(R3)(R1*1), R1
+	EXRL    $·mvcSrcToBuf(SB), R12
+	MOVD    $255, R0
+	SUB     R12, R0
+	MOVD    R0, (R9)               // update len
+
+aligned:
 	// setup
 	MOVD  $95, R0
 	VLM   (R5), KEY0, KEY1
@@ -193,7 +217,9 @@ loop:
 
 	// decrement length
 	ADD $-256, R4
+	BLT tail
 
+continue:
 	// rearrange vectors
 	SHUFFLE(X0, X1, X2, X3, M0, M1, M2, M3)
 	ADDV(J0, X0, X1, X2, X3)
@@ -219,6 +245,16 @@ loop:
 	MOVD $256(R3), R3
 
 	CMPBNE  R4, $0, chacha
+	CMPUBEQ R12, $255, return
+	EXRL    $·mvcBufToDst(SB), R12 // len was updated during setup
 
+return:
 	VSTEF $0, CTR, (R7)
 	RET
+
+tail:
+	MOVD R2, R9
+	MOVD R8, R2
+	MOVD R8, R3
+	MOVD $0, R4
+	JMP  continue

vendor/golang.org/x/crypto/chacha20/xor.go → vendor/golang.org/x/crypto/internal/chacha20/xor.go

@@ -4,7 +4,9 @@
 
 package chacha20
 
-import "runtime"
+import (
+	"runtime"
+)
 
 // Platforms that have fast unaligned 32-bit little endian accesses.
 const unaligned = runtime.GOARCH == "386" ||
@@ -13,10 +15,10 @@ const unaligned = runtime.GOARCH == "386" ||
 	runtime.GOARCH == "ppc64le" ||
 	runtime.GOARCH == "s390x"
 
-// addXor reads a little endian uint32 from src, XORs it with (a + b) and
+// xor reads a little endian uint32 from src, XORs it with u and
 // places the result in little endian byte order in dst.
-func addXor(dst, src []byte, a, b uint32) {
-	_, _ = src[3], dst[3] // bounds check elimination hint
+func xor(dst, src []byte, u uint32) {
+	_, _ = src[3], dst[3] // eliminate bounds checks
 	if unaligned {
 		// The compiler should optimize this code into
 		// 32-bit unaligned little endian loads and stores.
@@ -27,16 +29,15 @@ func addXor(dst, src []byte, a, b uint32) {
 		v |= uint32(src[1]) << 8
 		v |= uint32(src[2]) << 16
 		v |= uint32(src[3]) << 24
-		v ^= a + b
+		v ^= u
 		dst[0] = byte(v)
 		dst[1] = byte(v >> 8)
 		dst[2] = byte(v >> 16)
 		dst[3] = byte(v >> 24)
 	} else {
-		a += b
-		dst[0] = src[0] ^ byte(a)
-		dst[1] = src[1] ^ byte(a>>8)
-		dst[2] = src[2] ^ byte(a>>16)
-		dst[3] = src[3] ^ byte(a>>24)
+		dst[0] = src[0] ^ byte(u)
+		dst[1] = src[1] ^ byte(u>>8)
+		dst[2] = src[2] ^ byte(u>>16)
+		dst[3] = src[3] ^ byte(u>>24)
 	}
 }

vendor/golang.org/x/crypto/openpgp/armor/armor.go

@@ -62,11 +62,10 @@ var armorEndOfLine = []byte("-----")
 // lineReader wraps a line based reader. It watches for the end of an armor
 // block and records the expected CRC value.
 type lineReader struct {
-	in     *bufio.Reader
-	buf    []byte
-	eof    bool
-	crc    uint32
-	crcSet bool
+	in  *bufio.Reader
+	buf []byte
+	eof bool
+	crc uint32
 }
 
 func (l *lineReader) Read(p []byte) (n int, err error) {
@@ -88,11 +87,6 @@ func (l *lineReader) Read(p []byte) (n int, err error) {
 		return 0, ArmorCorrupt
 	}
 
-	if bytes.HasPrefix(line, armorEnd) {
-		l.eof = true
-		return 0, io.EOF
-	}
-
 	if len(line) == 5 && line[0] == '=' {
 		// This is the checksum line
 		var expectedBytes [3]byte
@@ -114,7 +108,6 @@ func (l *lineReader) Read(p []byte) (n int, err error) {
 		}
 
 		l.eof = true
-		l.crcSet = true
 		return 0, io.EOF
 	}
 
@@ -148,8 +141,10 @@ func (r *openpgpReader) Read(p []byte) (n int, err error) {
 	n, err = r.b64Reader.Read(p)
 	r.currentCRC = crc24(r.currentCRC, p[:n])
 
-	if err == io.EOF && r.lReader.crcSet && r.lReader.crc != uint32(r.currentCRC&crc24Mask) {
-		return 0, ArmorCorrupt
+	if err == io.EOF {
+		if r.lReader.crc != uint32(r.currentCRC&crc24Mask) {
+			return 0, ArmorCorrupt
+		}
 	}
 
 	return

vendor/golang.org/x/crypto/openpgp/elgamal/elgamal.go

@@ -76,9 +76,7 @@ func Encrypt(random io.Reader, pub *PublicKey, msg []byte) (c1, c2 *big.Int, err
 // Bleichenbacher, Advances in Cryptology (Crypto '98),
 func Decrypt(priv *PrivateKey, c1, c2 *big.Int) (msg []byte, err error) {
 	s := new(big.Int).Exp(c1, priv.X, priv.P)
-	if s.ModInverse(s, priv.P) == nil {
-		return nil, errors.New("elgamal: invalid private key")
-	}
+	s.ModInverse(s, priv.P)
 	s.Mul(s, c2)
 	s.Mod(s, priv.P)
 	em := s.Bytes()

vendor/golang.org/x/crypto/openpgp/keys.go

@@ -504,7 +504,7 @@ const defaultRSAKeyBits = 2048
 // which may be empty but must not contain any of "()<>\x00".
 // If config is nil, sensible defaults will be used.
 func NewEntity(name, comment, email string, config *packet.Config) (*Entity, error) {
-	creationTime := config.Now()
+	currentTime := config.Now()
 
 	bits := defaultRSAKeyBits
 	if config != nil && config.RSABits != 0 {
@@ -525,8 +525,8 @@ func NewEntity(name, comment, email string, config *packet.Config) (*Entity, err
 	}
 
 	e := &Entity{
-		PrimaryKey: packet.NewRSAPublicKey(creationTime, &signingPriv.PublicKey),
-		PrivateKey: packet.NewRSAPrivateKey(creationTime, signingPriv),
+		PrimaryKey: packet.NewRSAPublicKey(currentTime, &signingPriv.PublicKey),
+		PrivateKey: packet.NewRSAPrivateKey(currentTime, signingPriv),
 		Identities: make(map[string]*Identity),
 	}
 	isPrimaryId := true
@@ -534,7 +534,7 @@ func NewEntity(name, comment, email string, config *packet.Config) (*Entity, err
 		Name:   uid.Id,
 		UserId: uid,
 		SelfSignature: &packet.Signature{
-			CreationTime: creationTime,
+			CreationTime: currentTime,
 			SigType:      packet.SigTypePositiveCert,
 			PubKeyAlgo:   packet.PubKeyAlgoRSA,
 			Hash:         config.Hash(),
@@ -563,10 +563,10 @@ func NewEntity(name, comment, email string, config *packet.Config) (*Entity, err
 
 	e.Subkeys = make([]Subkey, 1)
 	e.Subkeys[0] = Subkey{
-		PublicKey:  packet.NewRSAPublicKey(creationTime, &encryptingPriv.PublicKey),
-		PrivateKey: packet.NewRSAPrivateKey(creationTime, encryptingPriv),
+		PublicKey:  packet.NewRSAPublicKey(currentTime, &encryptingPriv.PublicKey),
+		PrivateKey: packet.NewRSAPrivateKey(currentTime, encryptingPriv),
 		Sig: &packet.Signature{
-			CreationTime:              creationTime,
+			CreationTime:              currentTime,
 			SigType:                   packet.SigTypeSubkeyBinding,
 			PubKeyAlgo:                packet.PubKeyAlgoRSA,
 			Hash:                      config.Hash(),

vendor/golang.org/x/crypto/openpgp/packet/encrypted_key.go

@@ -5,7 +5,6 @@
 package packet
 
 import (
-	"crypto"
 	"crypto/rsa"
 	"encoding/binary"
 	"io"
@@ -79,9 +78,8 @@ func (e *EncryptedKey) Decrypt(priv *PrivateKey, config *Config) error {
 	// padding oracle attacks.
 	switch priv.PubKeyAlgo {
 	case PubKeyAlgoRSA, PubKeyAlgoRSAEncryptOnly:
-		// Supports both *rsa.PrivateKey and crypto.Decrypter
-		k := priv.PrivateKey.(crypto.Decrypter)
-		b, err = k.Decrypt(config.Random(), padToKeySize(k.Public().(*rsa.PublicKey), e.encryptedMPI1.bytes), nil)
+		k := priv.PrivateKey.(*rsa.PrivateKey)
+		b, err = rsa.DecryptPKCS1v15(config.Random(), k, padToKeySize(&k.PublicKey, e.encryptedMPI1.bytes))
 	case PubKeyAlgoElGamal:
 		c1 := new(big.Int).SetBytes(e.encryptedMPI1.bytes)
 		c2 := new(big.Int).SetBytes(e.encryptedMPI2.bytes)

vendor/golang.org/x/crypto/openpgp/packet/packet.go

@@ -14,7 +14,6 @@ import (
 	"crypto/rsa"
 	"io"
 	"math/big"
-	"math/bits"
 
 	"golang.org/x/crypto/cast5"
 	"golang.org/x/crypto/openpgp/errors"
@@ -101,65 +100,33 @@ func (r *partialLengthReader) Read(p []byte) (n int, err error) {
 type partialLengthWriter struct {
 	w          io.WriteCloser
 	lengthByte [1]byte
-	sentFirst  bool
-	buf        []byte
 }
 
-// RFC 4880 4.2.2.4: the first partial length MUST be at least 512 octets long.
-const minFirstPartialWrite = 512
-
 func (w *partialLengthWriter) Write(p []byte) (n int, err error) {
-	off := 0
-	if !w.sentFirst {
-		if len(w.buf) > 0 || len(p) < minFirstPartialWrite {
-			off = len(w.buf)
-			w.buf = append(w.buf, p...)
-			if len(w.buf) < minFirstPartialWrite {
-				return len(p), nil
-			}
-			p = w.buf
-			w.buf = nil
-		}
-		w.sentFirst = true
-	}
-
-	power := uint8(30)
 	for len(p) > 0 {
-		l := 1 << power
-		if len(p) < l {
-			power = uint8(bits.Len32(uint32(len(p)))) - 1
-			l = 1 << power
-		}
-		w.lengthByte[0] = 224 + power
-		_, err = w.w.Write(w.lengthByte[:])
-		if err == nil {
-			var m int
-			m, err = w.w.Write(p[:l])
-			n += m
-		}
-		if err != nil {
-			if n < off {
-				return 0, err
+		for power := uint(14); power < 32; power-- {
+			l := 1 << power
+			if len(p) >= l {
+				w.lengthByte[0] = 224 + uint8(power)
+				_, err = w.w.Write(w.lengthByte[:])
+				if err != nil {
+					return
+				}
+				var m int
+				m, err = w.w.Write(p[:l])
+				n += m
+				if err != nil {
+					return
+				}
+				p = p[l:]
+				break
 			}
-			return n - off, err
 		}
-		p = p[l:]
 	}
-	return n - off, nil
+	return
 }
 
 func (w *partialLengthWriter) Close() error {
-	if len(w.buf) > 0 {
-		// In this case we can't send a 512 byte packet.
-		// Just send what we have.
-		p := w.buf
-		w.sentFirst = true
-		w.buf = nil
-		if _, err := w.Write(p); err != nil {
-			return err
-		}
-	}
-
 	w.lengthByte[0] = 0
 	_, err := w.w.Write(w.lengthByte[:])
 	if err != nil {

vendor/golang.org/x/crypto/openpgp/packet/private_key.go

@@ -31,54 +31,54 @@ type PrivateKey struct {
 	encryptedData []byte
 	cipher        CipherFunction
 	s2k           func(out, in []byte)
-	PrivateKey    interface{} // An *{rsa|dsa|ecdsa}.PrivateKey or crypto.Signer/crypto.Decrypter (Decryptor RSA only).
+	PrivateKey    interface{} // An *{rsa|dsa|ecdsa}.PrivateKey or a crypto.Signer.
 	sha1Checksum  bool
 	iv            []byte
 }
 
-func NewRSAPrivateKey(creationTime time.Time, priv *rsa.PrivateKey) *PrivateKey {
+func NewRSAPrivateKey(currentTime time.Time, priv *rsa.PrivateKey) *PrivateKey {
 	pk := new(PrivateKey)
-	pk.PublicKey = *NewRSAPublicKey(creationTime, &priv.PublicKey)
+	pk.PublicKey = *NewRSAPublicKey(currentTime, &priv.PublicKey)
 	pk.PrivateKey = priv
 	return pk
 }
 
-func NewDSAPrivateKey(creationTime time.Time, priv *dsa.PrivateKey) *PrivateKey {
+func NewDSAPrivateKey(currentTime time.Time, priv *dsa.PrivateKey) *PrivateKey {
 	pk := new(PrivateKey)
-	pk.PublicKey = *NewDSAPublicKey(creationTime, &priv.PublicKey)
+	pk.PublicKey = *NewDSAPublicKey(currentTime, &priv.PublicKey)
 	pk.PrivateKey = priv
 	return pk
 }
 
-func NewElGamalPrivateKey(creationTime time.Time, priv *elgamal.PrivateKey) *PrivateKey {
+func NewElGamalPrivateKey(currentTime time.Time, priv *elgamal.PrivateKey) *PrivateKey {
 	pk := new(PrivateKey)
-	pk.PublicKey = *NewElGamalPublicKey(creationTime, &priv.PublicKey)
+	pk.PublicKey = *NewElGamalPublicKey(currentTime, &priv.PublicKey)
 	pk.PrivateKey = priv
 	return pk
 }
 
-func NewECDSAPrivateKey(creationTime time.Time, priv *ecdsa.PrivateKey) *PrivateKey {
+func NewECDSAPrivateKey(currentTime time.Time, priv *ecdsa.PrivateKey) *PrivateKey {
 	pk := new(PrivateKey)
-	pk.PublicKey = *NewECDSAPublicKey(creationTime, &priv.PublicKey)
+	pk.PublicKey = *NewECDSAPublicKey(currentTime, &priv.PublicKey)
 	pk.PrivateKey = priv
 	return pk
 }
 
 // NewSignerPrivateKey creates a PrivateKey from a crypto.Signer that
 // implements RSA or ECDSA.
-func NewSignerPrivateKey(creationTime time.Time, signer crypto.Signer) *PrivateKey {
+func NewSignerPrivateKey(currentTime time.Time, signer crypto.Signer) *PrivateKey {
 	pk := new(PrivateKey)
 	// In general, the public Keys should be used as pointers. We still
 	// type-switch on the values, for backwards-compatibility.
 	switch pubkey := signer.Public().(type) {
 	case *rsa.PublicKey:
-		pk.PublicKey = *NewRSAPublicKey(creationTime, pubkey)
+		pk.PublicKey = *NewRSAPublicKey(currentTime, pubkey)
 	case rsa.PublicKey:
-		pk.PublicKey = *NewRSAPublicKey(creationTime, &pubkey)
+		pk.PublicKey = *NewRSAPublicKey(currentTime, &pubkey)
 	case *ecdsa.PublicKey:
-		pk.PublicKey = *NewECDSAPublicKey(creationTime, pubkey)
+		pk.PublicKey = *NewECDSAPublicKey(currentTime, pubkey)
 	case ecdsa.PublicKey:
-		pk.PublicKey = *NewECDSAPublicKey(creationTime, &pubkey)
+		pk.PublicKey = *NewECDSAPublicKey(currentTime, &pubkey)
 	default:
 		panic("openpgp: unknown crypto.Signer type in NewSignerPrivateKey")
 	}

vendor/golang.org/x/crypto/pkcs12/pkcs12.go

@@ -252,7 +252,6 @@ func Decode(pfxData []byte, password string) (privateKey interface{}, certificat
 		case bag.Id.Equal(oidPKCS8ShroundedKeyBag):
 			if privateKey != nil {
 				err = errors.New("pkcs12: expected exactly one key bag")
-				return nil, nil, err
 			}
 
 			if privateKey, err = decodePkcs8ShroudedKeyBag(bag.Value.Bytes, encodedPassword); err != nil {

vendor/golang.org/x/crypto/poly1305/bits_compat.go

-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !go1.13
-
-package poly1305
-
-// Generic fallbacks for the math/bits intrinsics, copied from
-// src/math/bits/bits.go. They were added in Go 1.12, but Add64 and Sum64 had
-// variable time fallbacks until Go 1.13.
-
-func bitsAdd64(x, y, carry uint64) (sum, carryOut uint64) {
-	sum = x + y + carry
-	carryOut = ((x & y) | ((x | y) &^ sum)) >> 63
-	return
-}
-
-func bitsSub64(x, y, borrow uint64) (diff, borrowOut uint64) {
-	diff = x - y - borrow
-	borrowOut = ((^x & y) | (^(x ^ y) & diff)) >> 63
-	return
-}
-
-func bitsMul64(x, y uint64) (hi, lo uint64) {
-	const mask32 = 1<<32 - 1
-	x0 := x & mask32
-	x1 := x >> 32
-	y0 := y & mask32
-	y1 := y >> 32
-	w0 := x0 * y0
-	t := x1*y0 + w0>>32
-	w1 := t & mask32
-	w2 := t >> 32
-	w1 += x0 * y1
-	hi = x1*y1 + w2 + w1>>32
-	lo = x * y
-	return
-}

vendor/golang.org/x/crypto/poly1305/bits_go1.13.go

-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build go1.13
-
-package poly1305
-
-import "math/bits"
-
-func bitsAdd64(x, y, carry uint64) (sum, carryOut uint64) {
-	return bits.Add64(x, y, carry)
-}
-
-func bitsSub64(x, y, borrow uint64) (diff, borrowOut uint64) {
-	return bits.Sub64(x, y, borrow)
-}
-
-func bitsMul64(x, y uint64) (hi, lo uint64) {
-	return bits.Mul64(x, y)
-}

vendor/golang.org/x/crypto/poly1305/mac_noasm.go

@@ -2,8 +2,10 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !amd64,!ppc64le,!s390x gccgo purego
+// +build !amd64 gccgo appengine
 
 package poly1305
 
 type mac struct{ macGeneric }
+
+func newMAC(key *[32]byte) mac { return mac{newMACGeneric(key)} }

vendor/golang.org/x/crypto/poly1305/poly1305.go

@@ -22,16 +22,8 @@ import "crypto/subtle"
 // TagSize is the size, in bytes, of a poly1305 authenticator.
 const TagSize = 16
 
-// Sum generates an authenticator for msg using a one-time key and puts the
-// 16-byte result into out. Authenticating two different messages with the same
-// key allows an attacker to forge messages at will.
-func Sum(out *[16]byte, m []byte, key *[32]byte) {
-	h := New(key)
-	h.Write(m)
-	h.Sum(out[:0])
-}
-
-// Verify returns true if mac is a valid authenticator for m with the given key.
+// Verify returns true if mac is a valid authenticator for m with the given
+// key.
 func Verify(mac *[16]byte, m []byte, key *[32]byte) bool {
 	var tmp [16]byte
 	Sum(&tmp, m, key)
@@ -48,9 +40,10 @@ func Verify(mac *[16]byte, m []byte, key *[32]byte) bool {
 // two different messages with the same key allows an attacker
 // to forge messages at will.
 func New(key *[32]byte) *MAC {
-	m := &MAC{}
-	initialize(key, &m.macState)
-	return m
+	return &MAC{
+		mac:       newMAC(key),
+		finalized: false,
+	}
 }
 
 // MAC is an io.Writer computing an authentication tag
@@ -59,7 +52,7 @@ func New(key *[32]byte) *MAC {
 // MAC cannot be used like common hash.Hash implementations,
 // because using a poly1305 key twice breaks its security.
 // Therefore writing data to a running MAC after calling
-// Sum or Verify causes it to panic.
+// Sum causes it to panic.
 type MAC struct {
 	mac // platform-dependent implementation
 
@@ -72,10 +65,10 @@ func (h *MAC) Size() int { return TagSize }
 // Write adds more data to the running message authentication code.
 // It never returns an error.
 //
-// It must not be called after the first call of Sum or Verify.
+// It must not be called after the first call of Sum.
 func (h *MAC) Write(p []byte) (n int, err error) {
 	if h.finalized {
-		panic("poly1305: write to MAC after Sum or Verify")
+		panic("poly1305: write to MAC after Sum")
 	}
 	return h.mac.Write(p)
 }
@@ -88,12 +81,3 @@ func (h *MAC) Sum(b []byte) []byte {
 	h.finalized = true
 	return append(b, mac[:]...)
 }
-
-// Verify returns whether the authenticator of all data written to
-// the message authentication code matches the expected value.
-func (h *MAC) Verify(expected []byte) bool {
-	var mac [TagSize]byte
-	h.mac.Sum(&mac)
-	h.finalized = true
-	return subtle.ConstantTimeCompare(expected, mac[:]) == 1
-}

vendor/golang.org/x/crypto/poly1305/sum_amd64.go

@@ -2,46 +2,67 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !gccgo,!purego
+// +build amd64,!gccgo,!appengine
 
 package poly1305
 
 //go:noescape
-func update(state *macState, msg []byte)
+func initialize(state *[7]uint64, key *[32]byte)
 
-// mac is a wrapper for macGeneric that redirects calls that would have gone to
-// updateGeneric to update.
-//
-// Its Write and Sum methods are otherwise identical to the macGeneric ones, but
-// using function pointers would carry a major performance cost.
-type mac struct{ macGeneric }
+//go:noescape
+func update(state *[7]uint64, msg []byte)
+
+//go:noescape
+func finalize(tag *[TagSize]byte, state *[7]uint64)
+
+// Sum generates an authenticator for m using a one-time key and puts the
+// 16-byte result into out. Authenticating two different messages with the same
+// key allows an attacker to forge messages at will.
+func Sum(out *[16]byte, m []byte, key *[32]byte) {
+	h := newMAC(key)
+	h.Write(m)
+	h.Sum(out)
+}
+
+func newMAC(key *[32]byte) (h mac) {
+	initialize(&h.state, key)
+	return
+}
+
+type mac struct {
+	state [7]uint64 // := uint64{ h0, h1, h2, r0, r1, pad0, pad1 }
+
+	buffer [TagSize]byte
+	offset int
+}
 
-func (h *mac) Write(p []byte) (int, error) {
-	nn := len(p)
+func (h *mac) Write(p []byte) (n int, err error) {
+	n = len(p)
 	if h.offset > 0 {
-		n := copy(h.buffer[h.offset:], p)
-		if h.offset+n < TagSize {
-			h.offset += n
-			return nn, nil
+		remaining := TagSize - h.offset
+		if n < remaining {
+			h.offset += copy(h.buffer[h.offset:], p)
+			return n, nil
 		}
-		p = p[n:]
+		copy(h.buffer[h.offset:], p[:remaining])
+		p = p[remaining:]
 		h.offset = 0
-		update(&h.macState, h.buffer[:])
+		update(&h.state, h.buffer[:])
 	}
-	if n := len(p) - (len(p) % TagSize); n > 0 {
-		update(&h.macState, p[:n])
-		p = p[n:]
+	if nn := len(p) - (len(p) % TagSize); nn > 0 {
+		update(&h.state, p[:nn])
+		p = p[nn:]
 	}
 	if len(p) > 0 {
 		h.offset += copy(h.buffer[h.offset:], p)
 	}
-	return nn, nil
+	return n, nil
 }
 
 func (h *mac) Sum(out *[16]byte) {
-	state := h.macState
+	state := h.state
 	if h.offset > 0 {
 		update(&state, h.buffer[:h.offset])
 	}
-	finalize(out, &state.h, &state.s)
+	finalize(out, &state)
 }

vendor/golang.org/x/crypto/poly1305/sum_amd64.s

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !gccgo,!purego
+// +build amd64,!gccgo,!appengine
 
 #include "textflag.h"
 
@@ -54,6 +54,10 @@
 	ADCQ  t3, h1;                  \
 	ADCQ  $0, h2
 
+DATA ·poly1305Mask<>+0x00(SB)/8, $0x0FFFFFFC0FFFFFFF
+DATA ·poly1305Mask<>+0x08(SB)/8, $0x0FFFFFFC0FFFFFFC
+GLOBL ·poly1305Mask<>(SB), RODATA, $16
+
 // func update(state *[7]uint64, msg []byte)
 TEXT ·update(SB), $0-32
 	MOVQ state+0(FP), DI
@@ -106,3 +110,39 @@ done:
 	MOVQ R9, 8(DI)
 	MOVQ R10, 16(DI)
 	RET
+
+// func initialize(state *[7]uint64, key *[32]byte)
+TEXT ·initialize(SB), $0-16
+	MOVQ state+0(FP), DI
+	MOVQ key+8(FP), SI
+
+	// state[0...7] is initialized with zero
+	MOVOU 0(SI), X0
+	MOVOU 16(SI), X1
+	MOVOU ·poly1305Mask<>(SB), X2
+	PAND  X2, X0
+	MOVOU X0, 24(DI)
+	MOVOU X1, 40(DI)
+	RET
+
+// func finalize(tag *[TagSize]byte, state *[7]uint64)
+TEXT ·finalize(SB), $0-16
+	MOVQ tag+0(FP), DI
+	MOVQ state+8(FP), SI
+
+	MOVQ    0(SI), AX
+	MOVQ    8(SI), BX
+	MOVQ    16(SI), CX
+	MOVQ    AX, R8
+	MOVQ    BX, R9
+	SUBQ    $0xFFFFFFFFFFFFFFFB, AX
+	SBBQ    $0xFFFFFFFFFFFFFFFF, BX
+	SBBQ    $3, CX
+	CMOVQCS R8, AX
+	CMOVQCS R9, BX
+	ADDQ    40(SI), AX
+	ADCQ    48(SI), BX
+
+	MOVQ AX, 0(DI)
+	MOVQ BX, 8(DI)
+	RET

vendor/golang.org/x/crypto/poly1305/sum_arm.go

+// Copyright 2015 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build arm,!gccgo,!appengine,!nacl
+
+package poly1305
+
+// This function is implemented in sum_arm.s
+//go:noescape
+func poly1305_auth_armv6(out *[16]byte, m *byte, mlen uint32, key *[32]byte)
+
+// Sum generates an authenticator for m using a one-time key and puts the
+// 16-byte result into out. Authenticating two different messages with the same
+// key allows an attacker to forge messages at will.
+func Sum(out *[16]byte, m []byte, key *[32]byte) {
+	var mPtr *byte
+	if len(m) > 0 {
+		mPtr = &m[0]
+	}
+	poly1305_auth_armv6(out, mPtr, uint32(len(m)), key)
+}

vendor/golang.org/x/crypto/poly1305/sum_noasm.go

+// Copyright 2018 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+// +build s390x,!go1.11 !arm,!amd64,!s390x gccgo appengine nacl
+
+package poly1305
+
+// Sum generates an authenticator for msg using a one-time key and puts the
+// 16-byte result into out. Authenticating two different messages with the same
+// key allows an attacker to forge messages at will.
+func Sum(out *[TagSize]byte, msg []byte, key *[32]byte) {
+	h := newMAC(key)
+	h.Write(msg)
+	h.Sum(out)
+}

vendor/golang.org/x/crypto/poly1305/sum_ppc64le.go

-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !gccgo,!purego
-
-package poly1305
-
-//go:noescape
-func update(state *macState, msg []byte)
-
-// mac is a wrapper for macGeneric that redirects calls that would have gone to
-// updateGeneric to update.
-//
-// Its Write and Sum methods are otherwise identical to the macGeneric ones, but
-// using function pointers would carry a major performance cost.
-type mac struct{ macGeneric }
-
-func (h *mac) Write(p []byte) (int, error) {
-	nn := len(p)
-	if h.offset > 0 {
-		n := copy(h.buffer[h.offset:], p)
-		if h.offset+n < TagSize {
-			h.offset += n
-			return nn, nil
-		}
-		p = p[n:]
-		h.offset = 0
-		update(&h.macState, h.buffer[:])
-	}
-	if n := len(p) - (len(p) % TagSize); n > 0 {
-		update(&h.macState, p[:n])
-		p = p[n:]
-	}
-	if len(p) > 0 {
-		h.offset += copy(h.buffer[h.offset:], p)
-	}
-	return nn, nil
-}
-
-func (h *mac) Sum(out *[16]byte) {
-	state := h.macState
-	if h.offset > 0 {
-		update(&state, h.buffer[:h.offset])
-	}
-	finalize(out, &state.h, &state.s)
-}

vendor/golang.org/x/crypto/poly1305/sum_ppc64le.s

-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !gccgo,!purego
-
-#include "textflag.h"
-
-// This was ported from the amd64 implementation.
-
-#define POLY1305_ADD(msg, h0, h1, h2, t0, t1, t2) \
-	MOVD (msg), t0;  \
-	MOVD 8(msg), t1; \
-	MOVD $1, t2;     \
-	ADDC t0, h0, h0; \
-	ADDE t1, h1, h1; \
-	ADDE t2, h2;     \
-	ADD  $16, msg
-
-#define POLY1305_MUL(h0, h1, h2, r0, r1, t0, t1, t2, t3, t4, t5) \
-	MULLD  r0, h0, t0;  \
-	MULLD  r0, h1, t4;  \
-	MULHDU r0, h0, t1;  \
-	MULHDU r0, h1, t5;  \
-	ADDC   t4, t1, t1;  \
-	MULLD  r0, h2, t2;  \
-	ADDZE  t5;          \
-	MULHDU r1, h0, t4;  \
-	MULLD  r1, h0, h0;  \
-	ADD    t5, t2, t2;  \
-	ADDC   h0, t1, t1;  \
-	MULLD  h2, r1, t3;  \
-	ADDZE  t4, h0;      \
-	MULHDU r1, h1, t5;  \
-	MULLD  r1, h1, t4;  \
-	ADDC   t4, t2, t2;  \
-	ADDE   t5, t3, t3;  \
-	ADDC   h0, t2, t2;  \
-	MOVD   $-4, t4;     \
-	MOVD   t0, h0;      \
-	MOVD   t1, h1;      \
-	ADDZE  t3;          \
-	ANDCC  $3, t2, h2;  \
-	AND    t2, t4, t0;  \
-	ADDC   t0, h0, h0;  \
-	ADDE   t3, h1, h1;  \
-	SLD    $62, t3, t4; \
-	SRD    $2, t2;      \
-	ADDZE  h2;          \
-	OR     t4, t2, t2;  \
-	SRD    $2, t3;      \
-	ADDC   t2, h0, h0;  \
-	ADDE   t3, h1, h1;  \
-	ADDZE  h2
-
-DATA ·poly1305Mask<>+0x00(SB)/8, $0x0FFFFFFC0FFFFFFF
-DATA ·poly1305Mask<>+0x08(SB)/8, $0x0FFFFFFC0FFFFFFC
-GLOBL ·poly1305Mask<>(SB), RODATA, $16
-
-// func update(state *[7]uint64, msg []byte)
-TEXT ·update(SB), $0-32
-	MOVD state+0(FP), R3
-	MOVD msg_base+8(FP), R4
-	MOVD msg_len+16(FP), R5
-
-	MOVD 0(R3), R8   // h0
-	MOVD 8(R3), R9   // h1
-	MOVD 16(R3), R10 // h2
-	MOVD 24(R3), R11 // r0
-	MOVD 32(R3), R12 // r1
-
-	CMP R5, $16
-	BLT bytes_between_0_and_15
-
-loop:
-	POLY1305_ADD(R4, R8, R9, R10, R20, R21, R22)
-
-multiply:
-	POLY1305_MUL(R8, R9, R10, R11, R12, R16, R17, R18, R14, R20, R21)
-	ADD $-16, R5
-	CMP R5, $16
-	BGE loop
-
-bytes_between_0_and_15:
-	CMP  $0, R5
-	BEQ  done
-	MOVD $0, R16 // h0
-	MOVD $0, R17 // h1
-
-flush_buffer:
-	CMP R5, $8
-	BLE just1
-
-	MOVD $8, R21
-	SUB  R21, R5, R21
-
-	// Greater than 8 -- load the rightmost remaining bytes in msg
-	// and put into R17 (h1)
-	MOVD (R4)(R21), R17
-	MOVD $16, R22
-
-	// Find the offset to those bytes
-	SUB R5, R22, R22
-	SLD $3, R22
-
-	// Shift to get only the bytes in msg
-	SRD R22, R17, R17
-
-	// Put 1 at high end
-	MOVD $1, R23
-	SLD  $3, R21
-	SLD  R21, R23, R23
-	OR   R23, R17, R17
-
-	// Remainder is 8
-	MOVD $8, R5
-
-just1:
-	CMP R5, $8
-	BLT less8
-
-	// Exactly 8
-	MOVD (R4), R16
-
-	CMP $0, R17
-
-	// Check if we've already set R17; if not
-	// set 1 to indicate end of msg.
-	BNE  carry
-	MOVD $1, R17
-	BR   carry
-
-less8:
-	MOVD  $0, R16   // h0
-	MOVD  $0, R22   // shift count
-	CMP   R5, $4
-	BLT   less4
-	MOVWZ (R4), R16
-	ADD   $4, R4
-	ADD   $-4, R5
-	MOVD  $32, R22
-
-less4:
-	CMP   R5, $2
-	BLT   less2
-	MOVHZ (R4), R21
-	SLD   R22, R21, R21
-	OR    R16, R21, R16
-	ADD   $16, R22
-	ADD   $-2, R5
-	ADD   $2, R4
-
-less2:
-	CMP   $0, R5
-	BEQ   insert1
-	MOVBZ (R4), R21
-	SLD   R22, R21, R21
-	OR    R16, R21, R16
-	ADD   $8, R22
-
-insert1:
-	// Insert 1 at end of msg
-	MOVD $1, R21
-	SLD  R22, R21, R21
-	OR   R16, R21, R16
-
-carry:
-	// Add new values to h0, h1, h2
-	ADDC R16, R8
-	ADDE R17, R9
-	ADDE $0, R10
-	MOVD $16, R5
-	ADD  R5, R4
-	BR   multiply
-
-done:
-	// Save h0, h1, h2 in state
-	MOVD R8, 0(R3)
-	MOVD R9, 8(R3)
-	MOVD R10, 16(R3)
-	RET

vendor/golang.org/x/crypto/poly1305/sum_s390x.go

@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-// +build !gccgo,!purego
+// +build s390x,go1.11,!gccgo,!appengine
 
 package poly1305
 
@@ -10,66 +10,33 @@ import (
 	"golang.org/x/sys/cpu"
 )
 
-// updateVX is an assembly implementation of Poly1305 that uses vector
+// poly1305vx is an assembly implementation of Poly1305 that uses vector
 // instructions. It must only be called if the vector facility (vx) is
 // available.
 //go:noescape
-func updateVX(state *macState, msg []byte)
+func poly1305vx(out *[16]byte, m *byte, mlen uint64, key *[32]byte)
 
-// mac is a replacement for macGeneric that uses a larger buffer and redirects
-// calls that would have gone to updateGeneric to updateVX if the vector
-// facility is installed.
-//
-// A larger buffer is required for good performance because the vector
-// implementation has a higher fixed cost per call than the generic
-// implementation.
-type mac struct {
-	macState
-
-	buffer [16 * TagSize]byte // size must be a multiple of block size (16)
-	offset int
-}
-
-func (h *mac) Write(p []byte) (int, error) {
-	nn := len(p)
-	if h.offset > 0 {
-		n := copy(h.buffer[h.offset:], p)
-		if h.offset+n < len(h.buffer) {
-			h.offset += n
-			return nn, nil
-		}
-		p = p[n:]
-		h.offset = 0
-		if cpu.S390X.HasVX {
-			updateVX(&h.macState, h.buffer[:])
-		} else {
-			updateGeneric(&h.macState, h.buffer[:])
+// poly1305vmsl is an assembly implementation of Poly1305 that uses vector
+// instructions, including VMSL. It must only be called if the vector facility (vx) is
+// available and if VMSL is supported.
+//go:noescape
+func poly1305vmsl(out *[16]byte, m *byte, mlen uint64, key *[32]byte)
+
+// Sum generates an authenticator for m using a one-time key and puts the
+// 16-byte result into out. Authenticating two different messages with the same
+// key allows an attacker to forge messages at will.
+func Sum(out *[16]byte, m []byte, key *[32]byte) {
+	if cpu.S390X.HasVX {
+		var mPtr *byte
+		if len(m) > 0 {
+			mPtr = &m[0]
 		}
-	}
-
-	tail := len(p) % len(h.buffer) // number of bytes to copy into buffer
-	body := len(p) - tail          // number of bytes to process now
-	if body > 0 {
-		if cpu.S390X.HasVX {
-			updateVX(&h.macState, p[:body])
+		if cpu.S390X.HasVXE && len(m) > 256 {
+			poly1305vmsl(out, mPtr, uint64(len(m)), key)
 		} else {
-			updateGeneric(&h.macState, p[:body])
+			poly1305vx(out, mPtr, uint64(len(m)), key)
 		}
+	} else {
+		sumGeneric(out, m, key)
 	}
-	h.offset = copy(h.buffer[:], p[body:]) // copy tail bytes - can be 0
-	return nn, nil
-}
-
-func (h *mac) Sum(out *[TagSize]byte) {
-	state := h.macState
-	remainder := h.buffer[:h.offset]
-
-	// Use the generic implementation if we have 2 or fewer blocks left
-	// to sum. The vector implementation has a higher startup time.
-	if cpu.S390X.HasVX && len(remainder) > 2*TagSize {
-		updateVX(&state, remainder)
-	} else if len(remainder) > 0 {
-		updateGeneric(&state, remainder)
-	}
-	finalize(out, &state.h, &state.s)
 }

vendor/golang.org/x/crypto/salsa20/salsa/salsa20_amd64.s → vendor/golang.org/x/crypto/salsa20/salsa/salsa2020_amd64.s

@@ -99,24 +99,30 @@ TEXT ·salsa2020XORKeyStream(SB),0,$456-40 // frame = 424 + 32 byte alignment
 	MOVL  36 (SP),CX
 	MOVL DX,288(SP)
 	MOVL CX,304(SP)
+	ADDQ $1,DX
 	SHLQ $32,CX
 	ADDQ CX,DX
-	ADDQ $1,DX
 	MOVQ DX,CX
 	SHRQ $32,CX
 	MOVL DX, 292 (SP)
 	MOVL CX, 308 (SP)
 	ADDQ $1,DX
+	SHLQ $32,CX
+	ADDQ CX,DX
 	MOVQ DX,CX
 	SHRQ $32,CX
 	MOVL DX, 296 (SP)
 	MOVL CX, 312 (SP)
 	ADDQ $1,DX
+	SHLQ $32,CX
+	ADDQ CX,DX
 	MOVQ DX,CX
 	SHRQ $32,CX
 	MOVL DX, 300 (SP)
 	MOVL CX, 316 (SP)
 	ADDQ $1,DX
+	SHLQ $32,CX
+	ADDQ CX,DX
 	MOVQ DX,CX
 	SHRQ $32,CX
 	MOVL DX,16(SP)

vendor/golang.org/x/crypto/salsa20/salsa/salsa20_amd64.go

@@ -6,9 +6,10 @@
 
 package salsa
 
+// This function is implemented in salsa2020_amd64.s.
+
 //go:noescape
 
-// salsa2020XORKeyStream is implemented in salsa20_amd64.s.
 func salsa2020XORKeyStream(out, in *byte, n uint64, nonce, key *byte)
 
 // XORKeyStream crypts bytes from in to out using the given key and counters.

vendor/golang.org/x/crypto/salsa20/salsa/salsa20_noasm.go

-// Copyright 2019 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// +build !amd64 appengine gccgo
-
-package salsa
-
-// XORKeyStream crypts bytes from in to out using the given key and counters.
-// In and out must overlap entirely or not at all. Counter
-// contains the raw salsa20 counter bytes (both nonce and block counter).
-func XORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte) {
-	genericXORKeyStream(out, in, counter, key)
-}

vendor/golang.org/x/crypto/salsa20/salsa/salsa20_ref.go

@@ -2,6 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+// +build !amd64 appengine gccgo
+
 package salsa
 
 const rounds = 20
@@ -200,9 +202,10 @@ func core(out *[64]byte, in *[16]byte, k *[32]byte, c *[16]byte) {
 	out[63] = byte(x15 >> 24)
 }
 
-// genericXORKeyStream is the generic implementation of XORKeyStream to be used
-// when no assembly implementation is available.
-func genericXORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte) {
+// XORKeyStream crypts bytes from in to out using the given key and counters.
+// In and out must overlap entirely or not at all. Counter
+// contains the raw salsa20 counter bytes (both nonce and block counter).
+func XORKeyStream(out, in []byte, counter *[16]byte, key *[32]byte) {
 	var block [64]byte
 	var counterCopy [16]byte
 	copy(counterCopy[:], counter[:])

vendor/golang.org/x/crypto/ssh/certs.go

@@ -17,14 +17,12 @@ import (
 // These constants from [PROTOCOL.certkeys] represent the algorithm names
 // for certificate types supported by this package.
 const (
-	CertAlgoRSAv01        = "ssh-rsa-cert-v01@openssh.com"
-	CertAlgoDSAv01        = "ssh-dss-cert-v01@openssh.com"
-	CertAlgoECDSA256v01   = "ecdsa-sha2-nistp256-cert-v01@openssh.com"
-	CertAlgoECDSA384v01   = "ecdsa-sha2-nistp384-cert-v01@openssh.com"
-	CertAlgoECDSA521v01   = "ecdsa-sha2-nistp521-cert-v01@openssh.com"
-	CertAlgoSKECDSA256v01 = "sk-ecdsa-sha2-nistp256-cert-v01@openssh.com"
-	CertAlgoED25519v01    = "ssh-ed25519-cert-v01@openssh.com"
-	CertAlgoSKED25519v01  = "sk-ssh-ed25519-cert-v01@openssh.com"
+	CertAlgoRSAv01      = "ssh-rsa-cert-v01@openssh.com"
+	CertAlgoDSAv01      = "ssh-dss-cert-v01@openssh.com"
+	CertAlgoECDSA256v01 = "ecdsa-sha2-nistp256-cert-v01@openssh.com"
+	CertAlgoECDSA384v01 = "ecdsa-sha2-nistp384-cert-v01@openssh.com"
+	CertAlgoECDSA521v01 = "ecdsa-sha2-nistp521-cert-v01@openssh.com"
+	CertAlgoED25519v01  = "ssh-ed25519-cert-v01@openssh.com"
 )
 
 // Certificate types distinguish between host and user
@@ -39,7 +37,6 @@ const (
 type Signature struct {
 	Format string
 	Blob   []byte
-	Rest   []byte `ssh:"rest"`
 }
 
 // CertTimeInfinity can be used for OpenSSHCertV01.ValidBefore to indicate that
@@ -414,8 +411,8 @@ func (c *CertChecker) CheckCert(principal string, cert *Certificate) error {
 	return nil
 }
 
-// SignCert signs the certificate with an authority, setting the Nonce,
-// SignatureKey, and Signature fields.
+// SignCert sets c.SignatureKey to the authority's public key and stores a
+// Signature, by authority, in the certificate.
 func (c *Certificate) SignCert(rand io.Reader, authority Signer) error {
 	c.Nonce = make([]byte, 32)
 	if _, err := io.ReadFull(rand, c.Nonce); err != nil {
@@ -432,14 +429,12 @@ func (c *Certificate) SignCert(rand io.Reader, authority Signer) error {
 }
 
 var certAlgoNames = map[string]string{
-	KeyAlgoRSA:        CertAlgoRSAv01,
-	KeyAlgoDSA:        CertAlgoDSAv01,
-	KeyAlgoECDSA256:   CertAlgoECDSA256v01,
-	KeyAlgoECDSA384:   CertAlgoECDSA384v01,
-	KeyAlgoECDSA521:   CertAlgoECDSA521v01,
-	KeyAlgoSKECDSA256: CertAlgoSKECDSA256v01,
-	KeyAlgoED25519:    CertAlgoED25519v01,
-	KeyAlgoSKED25519:  CertAlgoSKED25519v01,
+	KeyAlgoRSA:      CertAlgoRSAv01,
+	KeyAlgoDSA:      CertAlgoDSAv01,
+	KeyAlgoECDSA256: CertAlgoECDSA256v01,
+	KeyAlgoECDSA384: CertAlgoECDSA384v01,
+	KeyAlgoECDSA521: CertAlgoECDSA521v01,
+	KeyAlgoED25519:  CertAlgoED25519v01,
 }
 
 // certToPrivAlgo returns the underlying algorithm for a certificate algorithm.
@@ -523,12 +518,6 @@ func parseSignatureBody(in []byte) (out *Signature, rest []byte, ok bool) {
 		return
 	}
 
-	switch out.Format {
-	case KeyAlgoSKECDSA256, CertAlgoSKECDSA256v01, KeyAlgoSKED25519, CertAlgoSKED25519v01:
-		out.Rest = in
-		return out, nil, ok
-	}
-
 	return out, in, ok
 }
 

vendor/golang.org/x/crypto/ssh/cipher.go

@@ -16,8 +16,9 @@ import (
 	"hash"
 	"io"
 	"io/ioutil"
+	"math/bits"
 
-	"golang.org/x/crypto/chacha20"
+	"golang.org/x/crypto/internal/chacha20"
 	"golang.org/x/crypto/poly1305"
 )
 
@@ -119,7 +120,7 @@ var cipherModes = map[string]*cipherMode{
 	chacha20Poly1305ID: {64, 0, newChaCha20Cipher},
 
 	// CBC mode is insecure and so is not included in the default config.
-	// (See https://www.ieee-security.org/TC/SP2013/papers/4977a526.pdf). If absolutely
+	// (See http://www.isg.rhul.ac.uk/~kp/SandPfinal.pdf). If absolutely
 	// needed, it's possible to specify a custom Config to enable it.
 	// You should expect that an active attacker can recover plaintext if
 	// you do.
@@ -148,8 +149,8 @@ type streamPacketCipher struct {
 	macResult   []byte
 }
 
-// readCipherPacket reads and decrypt a single packet from the reader argument.
-func (s *streamPacketCipher) readCipherPacket(seqNum uint32, r io.Reader) ([]byte, error) {
+// readPacket reads and decrypt a single packet from the reader argument.
+func (s *streamPacketCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) {
 	if _, err := io.ReadFull(r, s.prefix[:]); err != nil {
 		return nil, err
 	}
@@ -220,8 +221,8 @@ func (s *streamPacketCipher) readCipherPacket(seqNum uint32, r io.Reader) ([]byt
 	return s.packetData[:length-paddingLength-1], nil
 }
 
-// writeCipherPacket encrypts and sends a packet of data to the writer argument
-func (s *streamPacketCipher) writeCipherPacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error {
+// writePacket encrypts and sends a packet of data to the writer argument
+func (s *streamPacketCipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error {
 	if len(packet) > maxPacket {
 		return errors.New("ssh: packet too large")
 	}
@@ -326,7 +327,7 @@ func newGCMCipher(key, iv, unusedMacKey []byte, unusedAlgs directionAlgorithms)
 
 const gcmTagSize = 16
 
-func (c *gcmCipher) writeCipherPacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error {
+func (c *gcmCipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error {
 	// Pad out to multiple of 16 bytes. This is different from the
 	// stream cipher because that encrypts the length too.
 	padding := byte(packetSizeMultiple - (1+len(packet))%packetSizeMultiple)
@@ -369,7 +370,7 @@ func (c *gcmCipher) incIV() {
 	}
 }
 
-func (c *gcmCipher) readCipherPacket(seqNum uint32, r io.Reader) ([]byte, error) {
+func (c *gcmCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) {
 	if _, err := io.ReadFull(r, c.prefix[:]); err != nil {
 		return nil, err
 	}
@@ -485,8 +486,8 @@ type cbcError string
 
 func (e cbcError) Error() string { return string(e) }
 
-func (c *cbcCipher) readCipherPacket(seqNum uint32, r io.Reader) ([]byte, error) {
-	p, err := c.readCipherPacketLeaky(seqNum, r)
+func (c *cbcCipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) {
+	p, err := c.readPacketLeaky(seqNum, r)
 	if err != nil {
 		if _, ok := err.(cbcError); ok {
 			// Verification error: read a fixed amount of
@@ -499,7 +500,7 @@ func (c *cbcCipher) readCipherPacket(seqNum uint32, r io.Reader) ([]byte, error)
 	return p, err
 }
 
-func (c *cbcCipher) readCipherPacketLeaky(seqNum uint32, r io.Reader) ([]byte, error) {
+func (c *cbcCipher) readPacketLeaky(seqNum uint32, r io.Reader) ([]byte, error) {
 	blockSize := c.decrypter.BlockSize()
 
 	// Read the header, which will include some of the subsequent data in the
@@ -575,7 +576,7 @@ func (c *cbcCipher) readCipherPacketLeaky(seqNum uint32, r io.Reader) ([]byte, e
 	return c.packetData[prefixLen:paddingStart], nil
 }
 
-func (c *cbcCipher) writeCipherPacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error {
+func (c *cbcCipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, packet []byte) error {
 	effectiveBlockSize := maxUInt32(cbcMinPacketSizeMultiple, c.encrypter.BlockSize())
 
 	// Length of encrypted portion of the packet (header, payload, padding).
@@ -641,8 +642,8 @@ const chacha20Poly1305ID = "chacha20-poly1305@openssh.com"
 // the methods here also implement padding, which RFC4253 Section 6
 // also requires of stream ciphers.
 type chacha20Poly1305Cipher struct {
-	lengthKey  [32]byte
-	contentKey [32]byte
+	lengthKey  [8]uint32
+	contentKey [8]uint32
 	buf        []byte
 }
 
@@ -655,21 +656,21 @@ func newChaCha20Cipher(key, unusedIV, unusedMACKey []byte, unusedAlgs directionA
 		buf: make([]byte, 256),
 	}
 
-	copy(c.contentKey[:], key[:32])
-	copy(c.lengthKey[:], key[32:])
+	for i := range c.contentKey {
+		c.contentKey[i] = binary.LittleEndian.Uint32(key[i*4 : (i+1)*4])
+	}
+	for i := range c.lengthKey {
+		c.lengthKey[i] = binary.LittleEndian.Uint32(key[(i+8)*4 : (i+9)*4])
+	}
 	return c, nil
 }
 
-func (c *chacha20Poly1305Cipher) readCipherPacket(seqNum uint32, r io.Reader) ([]byte, error) {
-	nonce := make([]byte, 12)
-	binary.BigEndian.PutUint32(nonce[8:], seqNum)
-	s, err := chacha20.NewUnauthenticatedCipher(c.contentKey[:], nonce)
-	if err != nil {
-		return nil, err
-	}
-	var polyKey, discardBuf [32]byte
+func (c *chacha20Poly1305Cipher) readPacket(seqNum uint32, r io.Reader) ([]byte, error) {
+	nonce := [3]uint32{0, 0, bits.ReverseBytes32(seqNum)}
+	s := chacha20.New(c.contentKey, nonce)
+	var polyKey [32]byte
 	s.XORKeyStream(polyKey[:], polyKey[:])
-	s.XORKeyStream(discardBuf[:], discardBuf[:]) // skip the next 32 bytes
+	s.Advance() // skip next 32 bytes
 
 	encryptedLength := c.buf[:4]
 	if _, err := io.ReadFull(r, encryptedLength); err != nil {
@@ -677,11 +678,7 @@ func (c *chacha20Poly1305Cipher) readCipherPacket(seqNum uint32, r io.Reader) ([
 	}
 
 	var lenBytes [4]byte
-	ls, err := chacha20.NewUnauthenticatedCipher(c.lengthKey[:], nonce)
-	if err != nil {
-		return nil, err
-	}
-	ls.XORKeyStream(lenBytes[:], encryptedLength)
+	chacha20.New(c.lengthKey, nonce).XORKeyStream(lenBytes[:], encryptedLength)
 
 	length := binary.BigEndian.Uint32(lenBytes[:])
 	if length > maxPacket {
@@ -726,16 +723,12 @@ func (c *chacha20Poly1305Cipher) readCipherPacket(seqNum uint32, r io.Reader) ([
 	return plain, nil
 }
 
-func (c *chacha20Poly1305Cipher) writeCipherPacket(seqNum uint32, w io.Writer, rand io.Reader, payload []byte) error {
-	nonce := make([]byte, 12)
-	binary.BigEndian.PutUint32(nonce[8:], seqNum)
-	s, err := chacha20.NewUnauthenticatedCipher(c.contentKey[:], nonce)
-	if err != nil {
-		return err
-	}
-	var polyKey, discardBuf [32]byte
+func (c *chacha20Poly1305Cipher) writePacket(seqNum uint32, w io.Writer, rand io.Reader, payload []byte) error {
+	nonce := [3]uint32{0, 0, bits.ReverseBytes32(seqNum)}
+	s := chacha20.New(c.contentKey, nonce)
+	var polyKey [32]byte
 	s.XORKeyStream(polyKey[:], polyKey[:])
-	s.XORKeyStream(discardBuf[:], discardBuf[:]) // skip the next 32 bytes
+	s.Advance() // skip next 32 bytes
 
 	// There is no blocksize, so fall back to multiple of 8 byte
 	// padding, as described in RFC 4253, Sec 6.
@@ -755,11 +748,7 @@ func (c *chacha20Poly1305Cipher) writeCipherPacket(seqNum uint32, w io.Writer, r
 	}
 
 	binary.BigEndian.PutUint32(c.buf, uint32(1+len(payload)+padding))
-	ls, err := chacha20.NewUnauthenticatedCipher(c.lengthKey[:], nonce)
-	if err != nil {
-		return err
-	}
-	ls.XORKeyStream(c.buf, c.buf[:4])
+	chacha20.New(c.lengthKey, nonce).XORKeyStream(c.buf, c.buf[:4])
 	c.buf[4] = byte(padding)
 	copy(c.buf[5:], payload)
 	packetEnd := 5 + len(payload) + padding

vendor/golang.org/x/crypto/ssh/client_auth.go

@@ -36,7 +36,7 @@ func (c *connection) clientAuthenticate(config *ClientConfig) error {
 
 	// during the authentication phase the client first attempts the "none" method
 	// then any untried methods suggested by the server.
-	var tried []string
+	tried := make(map[string]bool)
 	var lastMethods []string
 
 	sessionID := c.transport.getSessionID()
@@ -49,9 +49,7 @@ func (c *connection) clientAuthenticate(config *ClientConfig) error {
 			// success
 			return nil
 		} else if ok == authFailure {
-			if m := auth.method(); !contains(tried, m) {
-				tried = append(tried, m)
-			}
+			tried[auth.method()] = true
 		}
 		if methods == nil {
 			methods = lastMethods
@@ -63,7 +61,7 @@ func (c *connection) clientAuthenticate(config *ClientConfig) error {
 	findNext:
 		for _, a := range config.Auth {
 			candidateMethod := a.method()
-			if contains(tried, candidateMethod) {
+			if tried[candidateMethod] {
 				continue
 			}
 			for _, meth := range methods {
@@ -74,16 +72,16 @@ func (c *connection) clientAuthenticate(config *ClientConfig) error {
 			}
 		}
 	}
-	return fmt.Errorf("ssh: unable to authenticate, attempted methods %v, no supported methods remain", tried)
+	return fmt.Errorf("ssh: unable to authenticate, attempted methods %v, no supported methods remain", keys(tried))
 }
 
-func contains(list []string, e string) bool {
-	for _, s := range list {
-		if s == e {
-			return true
-		}
+func keys(m map[string]bool) []string {
+	s := make([]string, 0, len(m))
+
+	for key := range m {
+		s = append(s, key)
 	}
-	return false
+	return s
 }
 
 // An AuthMethod represents an instance of an RFC 4252 authentication method.
@@ -525,117 +523,3 @@ func (r *retryableAuthMethod) method() string {
 func RetryableAuthMethod(auth AuthMethod, maxTries int) AuthMethod {
 	return &retryableAuthMethod{authMethod: auth, maxTries: maxTries}
 }
-
-// GSSAPIWithMICAuthMethod is an AuthMethod with "gssapi-with-mic" authentication.
-// See RFC 4462 section 3
-// gssAPIClient is implementation of the GSSAPIClient interface, see the definition of the interface for details.
-// target is the server host you want to log in to.
-func GSSAPIWithMICAuthMethod(gssAPIClient GSSAPIClient, target string) AuthMethod {
-	if gssAPIClient == nil {
-		panic("gss-api client must be not nil with enable gssapi-with-mic")
-	}
-	return &gssAPIWithMICCallback{gssAPIClient: gssAPIClient, target: target}
-}
-
-type gssAPIWithMICCallback struct {
-	gssAPIClient GSSAPIClient
-	target       string
-}
-
-func (g *gssAPIWithMICCallback) auth(session []byte, user string, c packetConn, rand io.Reader) (authResult, []string, error) {
-	m := &userAuthRequestMsg{
-		User:    user,
-		Service: serviceSSH,
-		Method:  g.method(),
-	}
-	// The GSS-API authentication method is initiated when the client sends an SSH_MSG_USERAUTH_REQUEST.
-	// See RFC 4462 section 3.2.
-	m.Payload = appendU32(m.Payload, 1)
-	m.Payload = appendString(m.Payload, string(krb5OID))
-	if err := c.writePacket(Marshal(m)); err != nil {
-		return authFailure, nil, err
-	}
-	// The server responds to the SSH_MSG_USERAUTH_REQUEST with either an
-	// SSH_MSG_USERAUTH_FAILURE if none of the mechanisms are supported or
-	// with an SSH_MSG_USERAUTH_GSSAPI_RESPONSE.
-	// See RFC 4462 section 3.3.
-	// OpenSSH supports Kerberos V5 mechanism only for GSS-API authentication,so I don't want to check
-	// selected mech if it is valid.
-	packet, err := c.readPacket()
-	if err != nil {
-		return authFailure, nil, err
-	}
-	userAuthGSSAPIResp := &userAuthGSSAPIResponse{}
-	if err := Unmarshal(packet, userAuthGSSAPIResp); err != nil {
-		return authFailure, nil, err
-	}
-	// Start the loop into the exchange token.
-	// See RFC 4462 section 3.4.
-	var token []byte
-	defer g.gssAPIClient.DeleteSecContext()
-	for {
-		// Initiates the establishment of a security context between the application and a remote peer.
-		nextToken, needContinue, err := g.gssAPIClient.InitSecContext("host@"+g.target, token, false)
-		if err != nil {
-			return authFailure, nil, err
-		}
-		if len(nextToken) > 0 {
-			if err := c.writePacket(Marshal(&userAuthGSSAPIToken{
-				Token: nextToken,
-			})); err != nil {
-				return authFailure, nil, err
-			}
-		}
-		if !needContinue {
-			break
-		}
-		packet, err = c.readPacket()
-		if err != nil {
-			return authFailure, nil, err
-		}
-		switch packet[0] {
-		case msgUserAuthFailure:
-			var msg userAuthFailureMsg
-			if err := Unmarshal(packet, &msg); err != nil {
-				return authFailure, nil, err
-			}
-			if msg.PartialSuccess {
-				return authPartialSuccess, msg.Methods, nil
-			}
-			return authFailure, msg.Methods, nil
-		case msgUserAuthGSSAPIError:
-			userAuthGSSAPIErrorResp := &userAuthGSSAPIError{}
-			if err := Unmarshal(packet, userAuthGSSAPIErrorResp); err != nil {
-				return authFailure, nil, err
-			}
-			return authFailure, nil, fmt.Errorf("GSS-API Error:\n"+
-				"Major Status: %d\n"+
-				"Minor Status: %d\n"+
-				"Error Message: %s\n", userAuthGSSAPIErrorResp.MajorStatus, userAuthGSSAPIErrorResp.MinorStatus,
-				userAuthGSSAPIErrorResp.Message)
-		case msgUserAuthGSSAPIToken:
-			userAuthGSSAPITokenReq := &userAuthGSSAPIToken{}
-			if err := Unmarshal(packet, userAuthGSSAPITokenReq); err != nil {
-				return authFailure, nil, err
-			}
-			token = userAuthGSSAPITokenReq.Token
-		}
-	}
-	// Binding Encryption Keys.
-	// See RFC 4462 section 3.5.
-	micField := buildMIC(string(session), user, "ssh-connection", "gssapi-with-mic")
-	micToken, err := g.gssAPIClient.GetMIC(micField)
-	if err != nil {
-		return authFailure, nil, err
-	}
-	if err := c.writePacket(Marshal(&userAuthGSSAPIMIC{
-		MIC: micToken,
-	})); err != nil {
-		return authFailure, nil, err
-	}
-	return handleAuthResponse(c)
-}
-
-func (g *gssAPIWithMICCallback) method() string {
-	return "gssapi-with-mic"
-}

vendor/golang.org/x/crypto/ssh/common.go

@@ -51,21 +51,6 @@ var supportedKexAlgos = []string{
 	kexAlgoDH14SHA1, kexAlgoDH1SHA1,
 }
 
-// serverForbiddenKexAlgos contains key exchange algorithms, that are forbidden
-// for the server half.
-var serverForbiddenKexAlgos = map[string]struct{}{
-	kexAlgoDHGEXSHA1:   {}, // server half implementation is only minimal to satisfy the automated tests
-	kexAlgoDHGEXSHA256: {}, // server half implementation is only minimal to satisfy the automated tests
-}
-
-// preferredKexAlgos specifies the default preference for key-exchange algorithms
-// in preference order.
-var preferredKexAlgos = []string{
-	kexAlgoCurve25519SHA256,
-	kexAlgoECDH256, kexAlgoECDH384, kexAlgoECDH521,
-	kexAlgoDH14SHA1,
-}
-
 // supportedHostKeyAlgos specifies the supported host-key algorithms (i.e. methods
 // of authenticating servers) in preference order.
 var supportedHostKeyAlgos = []string{
@@ -124,7 +109,6 @@ func findCommon(what string, client []string, server []string) (common string, e
 	return "", fmt.Errorf("ssh: no common algorithm for %s; client offered: %v, server offered: %v", what, client, server)
 }
 
-// directionAlgorithms records algorithm choices in one direction (either read or write)
 type directionAlgorithms struct {
 	Cipher      string
 	MAC         string
@@ -153,7 +137,7 @@ type algorithms struct {
 	r       directionAlgorithms
 }
 
-func findAgreedAlgorithms(isClient bool, clientKexInit, serverKexInit *kexInitMsg) (algs *algorithms, err error) {
+func findAgreedAlgorithms(clientKexInit, serverKexInit *kexInitMsg) (algs *algorithms, err error) {
 	result := &algorithms{}
 
 	result.kex, err = findCommon("key exchange", clientKexInit.KexAlgos, serverKexInit.KexAlgos)
@@ -166,37 +150,32 @@ func findAgreedAlgorithms(isClient bool, clientKexInit, serverKexInit *kexInitMs
 		return
 	}
 
-	stoc, ctos := &result.w, &result.r
-	if isClient {
-		ctos, stoc = stoc, ctos
-	}
-
-	ctos.Cipher, err = findCommon("client to server cipher", clientKexInit.CiphersClientServer, serverKexInit.CiphersClientServer)
+	result.w.Cipher, err = findCommon("client to server cipher", clientKexInit.CiphersClientServer, serverKexInit.CiphersClientServer)
 	if err != nil {
 		return
 	}
 
-	stoc.Cipher, err = findCommon("server to client cipher", clientKexInit.CiphersServerClient, serverKexInit.CiphersServerClient)
+	result.r.Cipher, err = findCommon("server to client cipher", clientKexInit.CiphersServerClient, serverKexInit.CiphersServerClient)
 	if err != nil {
 		return
 	}
 
-	ctos.MAC, err = findCommon("client to server MAC", clientKexInit.MACsClientServer, serverKexInit.MACsClientServer)
+	result.w.MAC, err = findCommon("client to server MAC", clientKexInit.MACsClientServer, serverKexInit.MACsClientServer)
 	if err != nil {
 		return
 	}
 
-	stoc.MAC, err = findCommon("server to client MAC", clientKexInit.MACsServerClient, serverKexInit.MACsServerClient)
+	result.r.MAC, err = findCommon("server to client MAC", clientKexInit.MACsServerClient, serverKexInit.MACsServerClient)
 	if err != nil {
 		return
 	}
 
-	ctos.Compression, err = findCommon("client to server compression", clientKexInit.CompressionClientServer, serverKexInit.CompressionClientServer)
+	result.w.Compression, err = findCommon("client to server compression", clientKexInit.CompressionClientServer, serverKexInit.CompressionClientServer)
 	if err != nil {
 		return
 	}
 
-	stoc.Compression, err = findCommon("server to client compression", clientKexInit.CompressionServerClient, serverKexInit.CompressionServerClient)
+	result.r.Compression, err = findCommon("server to client compression", clientKexInit.CompressionServerClient, serverKexInit.CompressionServerClient)
 	if err != nil {
 		return
 	}
@@ -254,7 +233,7 @@ func (c *Config) SetDefaults() {
 	c.Ciphers = ciphers
 
 	if c.KeyExchanges == nil {
-		c.KeyExchanges = preferredKexAlgos
+		c.KeyExchanges = supportedKexAlgos
 	}
 
 	if c.MACs == nil {

vendor/golang.org/x/crypto/ssh/handshake.go

@@ -543,8 +543,7 @@ func (t *handshakeTransport) enterKeyExchange(otherInitPacket []byte) error {
 
 	clientInit := otherInit
 	serverInit := t.sentInitMsg
-	isClient := len(t.hostKeys) == 0
-	if isClient {
+	if len(t.hostKeys) == 0 {
 		clientInit, serverInit = serverInit, clientInit
 
 		magics.clientKexInit = t.sentInitPacket
@@ -552,7 +551,7 @@ func (t *handshakeTransport) enterKeyExchange(otherInitPacket []byte) error {
 	}
 
 	var err error
-	t.algorithms, err = findAgreedAlgorithms(isClient, clientInit, serverInit)
+	t.algorithms, err = findAgreedAlgorithms(clientInit, serverInit)
 	if err != nil {
 		return err
 	}

vendor/golang.org/x/crypto/ssh/internal/bcrypt_pbkdf/bcrypt_pbkdf.go

-// Copyright 2014 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package bcrypt_pbkdf implements bcrypt_pbkdf(3) from OpenBSD.
-//
-// See https://flak.tedunangst.com/post/bcrypt-pbkdf and
-// https://cvsweb.openbsd.org/cgi-bin/cvsweb/src/lib/libutil/bcrypt_pbkdf.c.
-package bcrypt_pbkdf
-
-import (
-	"crypto/sha512"
-	"errors"
-	"golang.org/x/crypto/blowfish"
-)
-
-const blockSize = 32
-
-// Key derives a key from the password, salt and rounds count, returning a
-// []byte of length keyLen that can be used as cryptographic key.
-func Key(password, salt []byte, rounds, keyLen int) ([]byte, error) {
-	if rounds < 1 {
-		return nil, errors.New("bcrypt_pbkdf: number of rounds is too small")
-	}
-	if len(password) == 0 {
-		return nil, errors.New("bcrypt_pbkdf: empty password")
-	}
-	if len(salt) == 0 || len(salt) > 1<<20 {
-		return nil, errors.New("bcrypt_pbkdf: bad salt length")
-	}
-	if keyLen > 1024 {
-		return nil, errors.New("bcrypt_pbkdf: keyLen is too large")
-	}
-
-	numBlocks := (keyLen + blockSize - 1) / blockSize
-	key := make([]byte, numBlocks*blockSize)
-
-	h := sha512.New()
-	h.Write(password)
-	shapass := h.Sum(nil)
-
-	shasalt := make([]byte, 0, sha512.Size)
-	cnt, tmp := make([]byte, 4), make([]byte, blockSize)
-	for block := 1; block <= numBlocks; block++ {
-		h.Reset()
-		h.Write(salt)
-		cnt[0] = byte(block >> 24)
-		cnt[1] = byte(block >> 16)
-		cnt[2] = byte(block >> 8)
-		cnt[3] = byte(block)
-		h.Write(cnt)
-		bcryptHash(tmp, shapass, h.Sum(shasalt))
-
-		out := make([]byte, blockSize)
-		copy(out, tmp)
-		for i := 2; i <= rounds; i++ {
-			h.Reset()
-			h.Write(tmp)
-			bcryptHash(tmp, shapass, h.Sum(shasalt))
-			for j := 0; j < len(out); j++ {
-				out[j] ^= tmp[j]
-			}
-		}
-
-		for i, v := range out {
-			key[i*numBlocks+(block-1)] = v
-		}
-	}
-	return key[:keyLen], nil
-}
-
-var magic = []byte("OxychromaticBlowfishSwatDynamite")
-
-func bcryptHash(out, shapass, shasalt []byte) {
-	c, err := blowfish.NewSaltedCipher(shapass, shasalt)
-	if err != nil {
-		panic(err)
-	}
-	for i := 0; i < 64; i++ {
-		blowfish.ExpandKey(shasalt, c)
-		blowfish.ExpandKey(shapass, c)
-	}
-	copy(out, magic)
-	for i := 0; i < 32; i += 8 {
-		for j := 0; j < 64; j++ {
-			c.Encrypt(out[i:i+8], out[i:i+8])
-		}
-	}
-	// Swap bytes due to different endianness.
-	for i := 0; i < 32; i += 4 {
-		out[i+3], out[i+2], out[i+1], out[i] = out[i], out[i+1], out[i+2], out[i+3]
-	}
-}

vendor/golang.org/x/crypto/ssh/kex.go

@@ -10,9 +10,7 @@ import (
 	"crypto/elliptic"
 	"crypto/rand"
 	"crypto/subtle"
-	"encoding/binary"
 	"errors"
-	"fmt"
 	"io"
 	"math/big"
 
@@ -26,12 +24,6 @@ const (
 	kexAlgoECDH384          = "ecdh-sha2-nistp384"
 	kexAlgoECDH521          = "ecdh-sha2-nistp521"
 	kexAlgoCurve25519SHA256 = "curve25519-sha256@libssh.org"
-
-	// For the following kex only the client half contains a production
-	// ready implementation. The server half only consists of a minimal
-	// implementation to satisfy the automated tests.
-	kexAlgoDHGEXSHA1   = "diffie-hellman-group-exchange-sha1"
-	kexAlgoDHGEXSHA256 = "diffie-hellman-group-exchange-sha256"
 )
 
 // kexResult captures the outcome of a key exchange.
@@ -212,7 +204,7 @@ func (group *dhGroup) Server(c packetConn, randSource io.Reader, magics *handsha
 		HostKey:   hostKeyBytes,
 		Signature: sig,
 		Hash:      crypto.SHA1,
-	}, err
+	}, nil
 }
 
 // ecdh performs Elliptic Curve Diffie-Hellman key exchange as
@@ -410,8 +402,6 @@ func init() {
 	kexAlgoMap[kexAlgoECDH384] = &ecdh{elliptic.P384()}
 	kexAlgoMap[kexAlgoECDH256] = &ecdh{elliptic.P256()}
 	kexAlgoMap[kexAlgoCurve25519SHA256] = &curve25519sha256{}
-	kexAlgoMap[kexAlgoDHGEXSHA1] = &dhGEXSHA{hashFunc: crypto.SHA1}
-	kexAlgoMap[kexAlgoDHGEXSHA256] = &dhGEXSHA{hashFunc: crypto.SHA256}
 }
 
 // curve25519sha256 implements the curve25519-sha256@libssh.org key
@@ -548,242 +538,3 @@ func (kex *curve25519sha256) Server(c packetConn, rand io.Reader, magics *handsh
 		Hash:      crypto.SHA256,
 	}, nil
 }
-
-// dhGEXSHA implements the diffie-hellman-group-exchange-sha1 and
-// diffie-hellman-group-exchange-sha256 key agreement protocols,
-// as described in RFC 4419
-type dhGEXSHA struct {
-	g, p     *big.Int
-	hashFunc crypto.Hash
-}
-
-const numMRTests = 64
-
-const (
-	dhGroupExchangeMinimumBits   = 2048
-	dhGroupExchangePreferredBits = 2048
-	dhGroupExchangeMaximumBits   = 8192
-)
-
-func (gex *dhGEXSHA) diffieHellman(theirPublic, myPrivate *big.Int) (*big.Int, error) {
-	if theirPublic.Sign() <= 0 || theirPublic.Cmp(gex.p) >= 0 {
-		return nil, fmt.Errorf("ssh: DH parameter out of bounds")
-	}
-	return new(big.Int).Exp(theirPublic, myPrivate, gex.p), nil
-}
-
-func (gex dhGEXSHA) Client(c packetConn, randSource io.Reader, magics *handshakeMagics) (*kexResult, error) {
-	// Send GexRequest
-	kexDHGexRequest := kexDHGexRequestMsg{
-		MinBits:      dhGroupExchangeMinimumBits,
-		PreferedBits: dhGroupExchangePreferredBits,
-		MaxBits:      dhGroupExchangeMaximumBits,
-	}
-	if err := c.writePacket(Marshal(&kexDHGexRequest)); err != nil {
-		return nil, err
-	}
-
-	// Receive GexGroup
-	packet, err := c.readPacket()
-	if err != nil {
-		return nil, err
-	}
-
-	var kexDHGexGroup kexDHGexGroupMsg
-	if err = Unmarshal(packet, &kexDHGexGroup); err != nil {
-		return nil, err
-	}
-
-	// reject if p's bit length < dhGroupExchangeMinimumBits or > dhGroupExchangeMaximumBits
-	if kexDHGexGroup.P.BitLen() < dhGroupExchangeMinimumBits || kexDHGexGroup.P.BitLen() > dhGroupExchangeMaximumBits {
-		return nil, fmt.Errorf("ssh: server-generated gex p is out of range (%d bits)", kexDHGexGroup.P.BitLen())
-	}
-
-	gex.p = kexDHGexGroup.P
-	gex.g = kexDHGexGroup.G
-
-	// Check if p is safe by verifing that p and (p-1)/2 are primes
-	one := big.NewInt(1)
-	var pHalf = &big.Int{}
-	pHalf.Rsh(gex.p, 1)
-	if !gex.p.ProbablyPrime(numMRTests) || !pHalf.ProbablyPrime(numMRTests) {
-		return nil, fmt.Errorf("ssh: server provided gex p is not safe")
-	}
-
-	// Check if g is safe by verifing that g > 1 and g < p - 1
-	var pMinusOne = &big.Int{}
-	pMinusOne.Sub(gex.p, one)
-	if gex.g.Cmp(one) != 1 && gex.g.Cmp(pMinusOne) != -1 {
-		return nil, fmt.Errorf("ssh: server provided gex g is not safe")
-	}
-
-	// Send GexInit
-	x, err := rand.Int(randSource, pHalf)
-	if err != nil {
-		return nil, err
-	}
-	X := new(big.Int).Exp(gex.g, x, gex.p)
-	kexDHGexInit := kexDHGexInitMsg{
-		X: X,
-	}
-	if err := c.writePacket(Marshal(&kexDHGexInit)); err != nil {
-		return nil, err
-	}
-
-	// Receive GexReply
-	packet, err = c.readPacket()
-	if err != nil {
-		return nil, err
-	}
-
-	var kexDHGexReply kexDHGexReplyMsg
-	if err = Unmarshal(packet, &kexDHGexReply); err != nil {
-		return nil, err
-	}
-
-	kInt, err := gex.diffieHellman(kexDHGexReply.Y, x)
-	if err != nil {
-		return nil, err
-	}
-
-	// Check if k is safe by verifing that k > 1 and k < p - 1
-	if kInt.Cmp(one) != 1 && kInt.Cmp(pMinusOne) != -1 {
-		return nil, fmt.Errorf("ssh: derived k is not safe")
-	}
-
-	h := gex.hashFunc.New()
-	magics.write(h)
-	writeString(h, kexDHGexReply.HostKey)
-	binary.Write(h, binary.BigEndian, uint32(dhGroupExchangeMinimumBits))
-	binary.Write(h, binary.BigEndian, uint32(dhGroupExchangePreferredBits))
-	binary.Write(h, binary.BigEndian, uint32(dhGroupExchangeMaximumBits))
-	writeInt(h, gex.p)
-	writeInt(h, gex.g)
-	writeInt(h, X)
-	writeInt(h, kexDHGexReply.Y)
-	K := make([]byte, intLength(kInt))
-	marshalInt(K, kInt)
-	h.Write(K)
-
-	return &kexResult{
-		H:         h.Sum(nil),
-		K:         K,
-		HostKey:   kexDHGexReply.HostKey,
-		Signature: kexDHGexReply.Signature,
-		Hash:      gex.hashFunc,
-	}, nil
-}
-
-// Server half implementation of the Diffie Hellman Key Exchange with SHA1 and SHA256.
-//
-// This is a minimal implementation to satisfy the automated tests.
-func (gex dhGEXSHA) Server(c packetConn, randSource io.Reader, magics *handshakeMagics, priv Signer) (result *kexResult, err error) {
-	// Receive GexRequest
-	packet, err := c.readPacket()
-	if err != nil {
-		return
-	}
-	var kexDHGexRequest kexDHGexRequestMsg
-	if err = Unmarshal(packet, &kexDHGexRequest); err != nil {
-		return
-	}
-
-	// smoosh the user's preferred size into our own limits
-	if kexDHGexRequest.PreferedBits > dhGroupExchangeMaximumBits {
-		kexDHGexRequest.PreferedBits = dhGroupExchangeMaximumBits
-	}
-	if kexDHGexRequest.PreferedBits < dhGroupExchangeMinimumBits {
-		kexDHGexRequest.PreferedBits = dhGroupExchangeMinimumBits
-	}
-	// fix min/max if they're inconsistent.  technically, we could just pout
-	// and hang up, but there's no harm in giving them the benefit of the
-	// doubt and just picking a bitsize for them.
-	if kexDHGexRequest.MinBits > kexDHGexRequest.PreferedBits {
-		kexDHGexRequest.MinBits = kexDHGexRequest.PreferedBits
-	}
-	if kexDHGexRequest.MaxBits < kexDHGexRequest.PreferedBits {
-		kexDHGexRequest.MaxBits = kexDHGexRequest.PreferedBits
-	}
-
-	// Send GexGroup
-	// This is the group called diffie-hellman-group14-sha1 in RFC
-	// 4253 and Oakley Group 14 in RFC 3526.
-	p, _ := new(big.Int).SetString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
-	gex.p = p
-	gex.g = big.NewInt(2)
-
-	kexDHGexGroup := kexDHGexGroupMsg{
-		P: gex.p,
-		G: gex.g,
-	}
-	if err := c.writePacket(Marshal(&kexDHGexGroup)); err != nil {
-		return nil, err
-	}
-
-	// Receive GexInit
-	packet, err = c.readPacket()
-	if err != nil {
-		return
-	}
-	var kexDHGexInit kexDHGexInitMsg
-	if err = Unmarshal(packet, &kexDHGexInit); err != nil {
-		return
-	}
-
-	var pHalf = &big.Int{}
-	pHalf.Rsh(gex.p, 1)
-
-	y, err := rand.Int(randSource, pHalf)
-	if err != nil {
-		return
-	}
-
-	Y := new(big.Int).Exp(gex.g, y, gex.p)
-	kInt, err := gex.diffieHellman(kexDHGexInit.X, y)
-	if err != nil {
-		return nil, err
-	}
-
-	hostKeyBytes := priv.PublicKey().Marshal()
-
-	h := gex.hashFunc.New()
-	magics.write(h)
-	writeString(h, hostKeyBytes)
-	binary.Write(h, binary.BigEndian, uint32(dhGroupExchangeMinimumBits))
-	binary.Write(h, binary.BigEndian, uint32(dhGroupExchangePreferredBits))
-	binary.Write(h, binary.BigEndian, uint32(dhGroupExchangeMaximumBits))
-	writeInt(h, gex.p)
-	writeInt(h, gex.g)
-	writeInt(h, kexDHGexInit.X)
-	writeInt(h, Y)
-
-	K := make([]byte, intLength(kInt))
-	marshalInt(K, kInt)
-	h.Write(K)
-
-	H := h.Sum(nil)
-
-	// H is already a hash, but the hostkey signing will apply its
-	// own key-specific hash algorithm.
-	sig, err := signAndMarshal(priv, randSource, H)
-	if err != nil {
-		return nil, err
-	}
-
-	kexDHGexReply := kexDHGexReplyMsg{
-		HostKey:   hostKeyBytes,
-		Y:         Y,
-		Signature: sig,
-	}
-	packet = Marshal(&kexDHGexReply)
-
-	err = c.writePacket(packet)
-
-	return &kexResult{
-		H:         H,
-		K:         K,
-		HostKey:   hostKeyBytes,
-		Signature: sig,
-		Hash:      gex.hashFunc,
-	}, err
-}

vendor/golang.org/x/crypto/ssh/messages.go

@@ -97,36 +97,6 @@ type kexDHReplyMsg struct {
 	Signature []byte
 }
 
-// See RFC 4419, section 5.
-const msgKexDHGexGroup = 31
-
-type kexDHGexGroupMsg struct {
-	P *big.Int `sshtype:"31"`
-	G *big.Int
-}
-
-const msgKexDHGexInit = 32
-
-type kexDHGexInitMsg struct {
-	X *big.Int `sshtype:"32"`
-}
-
-const msgKexDHGexReply = 33
-
-type kexDHGexReplyMsg struct {
-	HostKey   []byte `sshtype:"33"`
-	Y         *big.Int
-	Signature []byte
-}
-
-const msgKexDHGexRequest = 34
-
-type kexDHGexRequestMsg struct {
-	MinBits      uint32 `sshtype:"34"`
-	PreferedBits uint32
-	MaxBits      uint32
-}
-
 // See RFC 4253, section 10.
 const msgServiceRequest = 5
 
@@ -305,42 +275,6 @@ type userAuthPubKeyOkMsg struct {
 	PubKey []byte
 }
 
-// See RFC 4462, section 3
-const msgUserAuthGSSAPIResponse = 60
-
-type userAuthGSSAPIResponse struct {
-	SupportMech []byte `sshtype:"60"`
-}
-
-const msgUserAuthGSSAPIToken = 61
-
-type userAuthGSSAPIToken struct {
-	Token []byte `sshtype:"61"`
-}
-
-const msgUserAuthGSSAPIMIC = 66
-
-type userAuthGSSAPIMIC struct {
-	MIC []byte `sshtype:"66"`
-}
-
-// See RFC 4462, section 3.9
-const msgUserAuthGSSAPIErrTok = 64
-
-type userAuthGSSAPIErrTok struct {
-	ErrorToken []byte `sshtype:"64"`
-}
-
-// See RFC 4462, section 3.8
-const msgUserAuthGSSAPIError = 65
-
-type userAuthGSSAPIError struct {
-	MajorStatus uint32 `sshtype:"65"`
-	MinorStatus uint32
-	Message     string
-	LanguageTag string
-}
-
 // typeTags returns the possible type bytes for the given reflect.Type, which
 // should be a struct. The possible values are separated by a '|' character.
 func typeTags(structType reflect.Type) (tags []byte) {
@@ -822,14 +756,6 @@ func decode(packet []byte) (interface{}, error) {
 		msg = new(channelRequestSuccessMsg)
 	case msgChannelFailure:
 		msg = new(channelRequestFailureMsg)
-	case msgUserAuthGSSAPIToken:
-		msg = new(userAuthGSSAPIToken)
-	case msgUserAuthGSSAPIMIC:
-		msg = new(userAuthGSSAPIMIC)
-	case msgUserAuthGSSAPIErrTok:
-		msg = new(userAuthGSSAPIErrTok)
-	case msgUserAuthGSSAPIError:
-		msg = new(userAuthGSSAPIError)
 	default:
 		return nil, unexpectedMessageError(0, packet[0])
 	}
@@ -838,29 +764,3 @@ func decode(packet []byte) (interface{}, error) {
 	}
 	return msg, nil
 }
-
-var packetTypeNames = map[byte]string{
-	msgDisconnect:          "disconnectMsg",
-	msgServiceRequest:      "serviceRequestMsg",
-	msgServiceAccept:       "serviceAcceptMsg",
-	msgKexInit:             "kexInitMsg",
-	msgKexDHInit:           "kexDHInitMsg",
-	msgKexDHReply:          "kexDHReplyMsg",
-	msgUserAuthRequest:     "userAuthRequestMsg",
-	msgUserAuthSuccess:     "userAuthSuccessMsg",
-	msgUserAuthFailure:     "userAuthFailureMsg",
-	msgUserAuthPubKeyOk:    "userAuthPubKeyOkMsg",
-	msgGlobalRequest:       "globalRequestMsg",
-	msgRequestSuccess:      "globalRequestSuccessMsg",
-	msgRequestFailure:      "globalRequestFailureMsg",
-	msgChannelOpen:         "channelOpenMsg",
-	msgChannelData:         "channelDataMsg",
-	msgChannelOpenConfirm:  "channelOpenConfirmMsg",
-	msgChannelOpenFailure:  "channelOpenFailureMsg",
-	msgChannelWindowAdjust: "windowAdjustMsg",
-	msgChannelEOF:          "channelEOFMsg",
-	msgChannelClose:        "channelCloseMsg",
-	msgChannelRequest:      "channelRequestMsg",
-	msgChannelSuccess:      "channelRequestSuccessMsg",
-	msgChannelFailure:      "channelRequestFailureMsg",
-}

vendor/golang.org/x/crypto/ssh/mux.go

@@ -240,7 +240,7 @@ func (m *mux) onePacket() error {
 	id := binary.BigEndian.Uint32(packet[1:])
 	ch := m.chanList.getChan(id)
 	if ch == nil {
-		return m.handleUnknownChannelPacket(id, packet)
+		return fmt.Errorf("ssh: invalid channel %d", id)
 	}
 
 	return ch.handlePacket(packet)
@@ -328,24 +328,3 @@ func (m *mux) openChannel(chanType string, extra []byte) (*channel, error) {
 		return nil, fmt.Errorf("ssh: unexpected packet in response to channel open: %T", msg)
 	}
 }
-
-func (m *mux) handleUnknownChannelPacket(id uint32, packet []byte) error {
-	msg, err := decode(packet)
-	if err != nil {
-		return err
-	}
-
-	switch msg := msg.(type) {
-	// RFC 4254 section 5.4 says unrecognized channel requests should
-	// receive a failure response.
-	case *channelRequestMsg:
-		if msg.WantReply {
-			return m.sendMessage(channelRequestFailureMsg{
-				PeersID: msg.PeersID,
-			})
-		}
-		return nil
-	default:
-		return fmt.Errorf("ssh: invalid channel %d", id)
-	}
-}

vendor/golang.org/x/crypto/ssh/server.go

@@ -45,20 +45,6 @@ type Permissions struct {
 	Extensions map[string]string
 }
 
-type GSSAPIWithMICConfig struct {
-	// AllowLogin, must be set, is called when gssapi-with-mic
-	// authentication is selected (RFC 4462 section 3). The srcName is from the
-	// results of the GSS-API authentication. The format is username@DOMAIN.
-	// GSSAPI just guarantees to the server who the user is, but not if they can log in, and with what permissions.
-	// This callback is called after the user identity is established with GSSAPI to decide if the user can login with
-	// which permissions. If the user is allowed to login, it should return a nil error.
-	AllowLogin func(conn ConnMetadata, srcName string) (*Permissions, error)
-
-	// Server must be set. It's the implementation
-	// of the GSSAPIServer interface. See GSSAPIServer interface for details.
-	Server GSSAPIServer
-}
-
 // ServerConfig holds server specific configuration data.
 type ServerConfig struct {
 	// Config contains configuration shared between client and server.
@@ -113,10 +99,6 @@ type ServerConfig struct {
 	// BannerCallback, if present, is called and the return string is sent to
 	// the client after key exchange completed but before authentication.
 	BannerCallback func(conn ConnMetadata) string
-
-	// GSSAPIWithMICConfig includes gssapi server and callback, which if both non-nil, is used
-	// when gssapi-with-mic authentication is selected (RFC 4462 section 3).
-	GSSAPIWithMICConfig *GSSAPIWithMICConfig
 }
 
 // AddHostKey adds a private key as a host key. If an existing host
@@ -193,12 +175,6 @@ func NewServerConn(c net.Conn, config *ServerConfig) (*ServerConn, <-chan NewCha
 	if fullConf.MaxAuthTries == 0 {
 		fullConf.MaxAuthTries = 6
 	}
-	// Check if the config contains any unsupported key exchanges
-	for _, kex := range fullConf.KeyExchanges {
-		if _, ok := serverForbiddenKexAlgos[kex]; ok {
-			return nil, nil, nil, fmt.Errorf("ssh: unsupported key exchange %s for server", kex)
-		}
-	}
 
 	s := &connection{
 		sshConn: sshConn{conn: c},
@@ -228,9 +204,7 @@ func (s *connection) serverHandshake(config *ServerConfig) (*Permissions, error)
 		return nil, errors.New("ssh: server has no host keys")
 	}
 
-	if !config.NoClientAuth && config.PasswordCallback == nil && config.PublicKeyCallback == nil &&
-		config.KeyboardInteractiveCallback == nil && (config.GSSAPIWithMICConfig == nil ||
-		config.GSSAPIWithMICConfig.AllowLogin == nil || config.GSSAPIWithMICConfig.Server == nil) {
+	if !config.NoClientAuth && config.PasswordCallback == nil && config.PublicKeyCallback == nil && config.KeyboardInteractiveCallback == nil {
 		return nil, errors.New("ssh: no authentication methods configured but NoClientAuth is also false")
 	}
 
@@ -284,8 +258,8 @@ func (s *connection) serverHandshake(config *ServerConfig) (*Permissions, error)
 
 func isAcceptableAlgo(algo string) bool {
 	switch algo {
-	case KeyAlgoRSA, KeyAlgoDSA, KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521, KeyAlgoSKECDSA256, KeyAlgoED25519, KeyAlgoSKED25519,
-		CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01, CertAlgoSKECDSA256v01, CertAlgoED25519v01, CertAlgoSKED25519v01:
+	case KeyAlgoRSA, KeyAlgoDSA, KeyAlgoECDSA256, KeyAlgoECDSA384, KeyAlgoECDSA521, KeyAlgoED25519,
+		CertAlgoRSAv01, CertAlgoDSAv01, CertAlgoECDSA256v01, CertAlgoECDSA384v01, CertAlgoECDSA521v01, CertAlgoED25519v01:
 		return true
 	}
 	return false
@@ -321,55 +295,6 @@ func checkSourceAddress(addr net.Addr, sourceAddrs string) error {
 	return fmt.Errorf("ssh: remote address %v is not allowed because of source-address restriction", addr)
 }
 
-func gssExchangeToken(gssapiConfig *GSSAPIWithMICConfig, firstToken []byte, s *connection,
-	sessionID []byte, userAuthReq userAuthRequestMsg) (authErr error, perms *Permissions, err error) {
-	gssAPIServer := gssapiConfig.Server
-	defer gssAPIServer.DeleteSecContext()
-	var srcName string
-	for {
-		var (
-			outToken     []byte
-			needContinue bool
-		)
-		outToken, srcName, needContinue, err = gssAPIServer.AcceptSecContext(firstToken)
-		if err != nil {
-			return err, nil, nil
-		}
-		if len(outToken) != 0 {
-			if err := s.transport.writePacket(Marshal(&userAuthGSSAPIToken{
-				Token: outToken,
-			})); err != nil {
-				return nil, nil, err
-			}
-		}
-		if !needContinue {
-			break
-		}
-		packet, err := s.transport.readPacket()
-		if err != nil {
-			return nil, nil, err
-		}
-		userAuthGSSAPITokenReq := &userAuthGSSAPIToken{}
-		if err := Unmarshal(packet, userAuthGSSAPITokenReq); err != nil {
-			return nil, nil, err
-		}
-	}
-	packet, err := s.transport.readPacket()
-	if err != nil {
-		return nil, nil, err
-	}
-	userAuthGSSAPIMICReq := &userAuthGSSAPIMIC{}
-	if err := Unmarshal(packet, userAuthGSSAPIMICReq); err != nil {
-		return nil, nil, err
-	}
-	mic := buildMIC(string(sessionID), userAuthReq.User, userAuthReq.Service, userAuthReq.Method)
-	if err := gssAPIServer.VerifyMIC(mic, userAuthGSSAPIMICReq.MIC); err != nil {
-		return err, nil, nil
-	}
-	perms, authErr = gssapiConfig.AllowLogin(s, srcName)
-	return authErr, perms, nil
-}
-
 // ServerAuthError represents server authentication errors and is
 // sometimes returned by NewServerConn. It appends any authentication
 // errors that may occur, and is returned if all of the authentication
@@ -571,49 +496,6 @@ userAuthLoop:
 				authErr = candidate.result
 				perms = candidate.perms
 			}
-		case "gssapi-with-mic":
-			gssapiConfig := config.GSSAPIWithMICConfig
-			userAuthRequestGSSAPI, err := parseGSSAPIPayload(userAuthReq.Payload)
-			if err != nil {
-				return nil, parseError(msgUserAuthRequest)
-			}
-			// OpenSSH supports Kerberos V5 mechanism only for GSS-API authentication.
-			if userAuthRequestGSSAPI.N == 0 {
-				authErr = fmt.Errorf("ssh: Mechanism negotiation is not supported")
-				break
-			}
-			var i uint32
-			present := false
-			for i = 0; i < userAuthRequestGSSAPI.N; i++ {
-				if userAuthRequestGSSAPI.OIDS[i].Equal(krb5Mesh) {
-					present = true
-					break
-				}
-			}
-			if !present {
-				authErr = fmt.Errorf("ssh: GSSAPI authentication must use the Kerberos V5 mechanism")
-				break
-			}
-			// Initial server response, see RFC 4462 section 3.3.
-			if err := s.transport.writePacket(Marshal(&userAuthGSSAPIResponse{
-				SupportMech: krb5OID,
-			})); err != nil {
-				return nil, err
-			}
-			// Exchange token, see RFC 4462 section 3.4.
-			packet, err := s.transport.readPacket()
-			if err != nil {
-				return nil, err
-			}
-			userAuthGSSAPITokenReq := &userAuthGSSAPIToken{}
-			if err := Unmarshal(packet, userAuthGSSAPITokenReq); err != nil {
-				return nil, err
-			}
-			authErr, perms, err = gssExchangeToken(gssapiConfig, userAuthGSSAPITokenReq.Token, s, sessionID,
-				userAuthReq)
-			if err != nil {
-				return nil, err
-			}
 		default:
 			authErr = fmt.Errorf("ssh: unknown method %q", userAuthReq.Method)
 		}
@@ -640,10 +522,6 @@ userAuthLoop:
 		if config.KeyboardInteractiveCallback != nil {
 			failureMsg.Methods = append(failureMsg.Methods, "keyboard-interactive")
 		}
-		if config.GSSAPIWithMICConfig != nil && config.GSSAPIWithMICConfig.Server != nil &&
-			config.GSSAPIWithMICConfig.AllowLogin != nil {
-			failureMsg.Methods = append(failureMsg.Methods, "gssapi-with-mic")
-		}
 
 		if len(failureMsg.Methods) == 0 {
 			return nil, errors.New("ssh: no authentication methods configured but NoClientAuth is also false")

vendor/golang.org/x/crypto/ssh/ssh_gss.go

-// Copyright 2011 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package ssh
-
-import (
-	"encoding/asn1"
-	"errors"
-)
-
-var krb5OID []byte
-
-func init() {
-	krb5OID, _ = asn1.Marshal(krb5Mesh)
-}
-
-// GSSAPIClient provides the API to plug-in GSSAPI authentication for client logins.
-type GSSAPIClient interface {
-	// InitSecContext initiates the establishment of a security context for GSS-API between the
-	// ssh client and ssh server. Initially the token parameter should be specified as nil.
-	// The routine may return a outputToken which should be transferred to
-	// the ssh server, where the ssh server will present it to
-	// AcceptSecContext. If no token need be sent, InitSecContext will indicate this by setting
-	// needContinue to false. To complete the context
-	// establishment, one or more reply tokens may be required from the ssh
-	// server;if so, InitSecContext will return a needContinue which is true.
-	// In this case, InitSecContext should be called again when the
-	// reply token is received from the ssh server, passing the reply
-	// token to InitSecContext via the token parameters.
-	// See RFC 2743 section 2.2.1 and RFC 4462 section 3.4.
-	InitSecContext(target string, token []byte, isGSSDelegCreds bool) (outputToken []byte, needContinue bool, err error)
-	// GetMIC generates a cryptographic MIC for the SSH2 message, and places
-	// the MIC in a token for transfer to the ssh server.
-	// The contents of the MIC field are obtained by calling GSS_GetMIC()
-	// over the following, using the GSS-API context that was just
-	// established:
-	//  string    session identifier
-	//  byte      SSH_MSG_USERAUTH_REQUEST
-	//  string    user name
-	//  string    service
-	//  string    "gssapi-with-mic"
-	// See RFC 2743 section 2.3.1 and RFC 4462 3.5.
-	GetMIC(micFiled []byte) ([]byte, error)
-	// Whenever possible, it should be possible for
-	// DeleteSecContext() calls to be successfully processed even
-	// if other calls cannot succeed, thereby enabling context-related
-	// resources to be released.
-	// In addition to deleting established security contexts,
-	// gss_delete_sec_context must also be able to delete "half-built"
-	// security contexts resulting from an incomplete sequence of
-	// InitSecContext()/AcceptSecContext() calls.
-	// See RFC 2743 section 2.2.3.
-	DeleteSecContext() error
-}
-
-// GSSAPIServer provides the API to plug in GSSAPI authentication for server logins.
-type GSSAPIServer interface {
-	// AcceptSecContext allows a remotely initiated security context between the application
-	// and a remote peer to be established by the ssh client. The routine may return a
-	// outputToken which should be transferred to the ssh client,
-	// where the ssh client will present it to InitSecContext.
-	// If no token need be sent, AcceptSecContext will indicate this
-	// by setting the needContinue to false. To
-	// complete the context establishment, one or more reply tokens may be
-	// required from the ssh client. if so, AcceptSecContext
-	// will return a needContinue which is true, in which case it
-	// should be called again when the reply token is received from the ssh
-	// client, passing the token to AcceptSecContext via the
-	// token parameters.
-	// The srcName return value is the authenticated username.
-	// See RFC 2743 section 2.2.2 and RFC 4462 section 3.4.
-	AcceptSecContext(token []byte) (outputToken []byte, srcName string, needContinue bool, err error)
-	// VerifyMIC verifies that a cryptographic MIC, contained in the token parameter,
-	// fits the supplied message is received from the ssh client.
-	// See RFC 2743 section 2.3.2.
-	VerifyMIC(micField []byte, micToken []byte) error
-	// Whenever possible, it should be possible for
-	// DeleteSecContext() calls to be successfully processed even
-	// if other calls cannot succeed, thereby enabling context-related
-	// resources to be released.
-	// In addition to deleting established security contexts,
-	// gss_delete_sec_context must also be able to delete "half-built"
-	// security contexts resulting from an incomplete sequence of
-	// InitSecContext()/AcceptSecContext() calls.
-	// See RFC 2743 section 2.2.3.
-	DeleteSecContext() error
-}
-
-var (
-	// OpenSSH supports Kerberos V5 mechanism only for GSS-API authentication,
-	// so we also support the krb5 mechanism only.
-	// See RFC 1964 section 1.
-	krb5Mesh = asn1.ObjectIdentifier{1, 2, 840, 113554, 1, 2, 2}
-)
-
-// The GSS-API authentication method is initiated when the client sends an SSH_MSG_USERAUTH_REQUEST
-// See RFC 4462 section 3.2.
-type userAuthRequestGSSAPI struct {
-	N    uint32
-	OIDS []asn1.ObjectIdentifier
-}
-
-func parseGSSAPIPayload(payload []byte) (*userAuthRequestGSSAPI, error) {
-	n, rest, ok := parseUint32(payload)
-	if !ok {
-		return nil, errors.New("parse uint32 failed")
-	}
-	s := &userAuthRequestGSSAPI{
-		N:    n,
-		OIDS: make([]asn1.ObjectIdentifier, n),
-	}
-	for i := 0; i < int(n); i++ {
-		var (
-			desiredMech []byte
-			err         error
-		)
-		desiredMech, rest, ok = parseString(rest)
-		if !ok {
-			return nil, errors.New("parse string failed")
-		}
-		if rest, err = asn1.Unmarshal(desiredMech, &s.OIDS[i]); err != nil {
-			return nil, err
-		}
-
-	}
-	return s, nil
-}
-
-// See RFC 4462 section 3.6.
-func buildMIC(sessionID string, username string, service string, authMethod string) []byte {
-	out := make([]byte, 0, 0)
-	out = appendString(out, sessionID)
-	out = append(out, msgUserAuthRequest)
-	out = appendString(out, username)
-	out = appendString(out, service)
-	out = appendString(out, authMethod)
-	return out
-}

vendor/golang.org/x/crypto/ssh/terminal/terminal.go

@@ -7,8 +7,6 @@ package terminal
 import (
 	"bytes"
 	"io"
-	"runtime"
-	"strconv"
 	"sync"
 	"unicode/utf8"
 )
@@ -113,7 +111,6 @@ func NewTerminal(c io.ReadWriter, prompt string) *Terminal {
 }
 
 const (
-	keyCtrlC     = 3
 	keyCtrlD     = 4
 	keyCtrlU     = 21
 	keyEnter     = '\r'
@@ -152,12 +149,8 @@ func bytesToKey(b []byte, pasteActive bool) (rune, []byte) {
 		switch b[0] {
 		case 1: // ^A
 			return keyHome, b[1:]
-		case 2: // ^B
-			return keyLeft, b[1:]
 		case 5: // ^E
 			return keyEnd, b[1:]
-		case 6: // ^F
-			return keyRight, b[1:]
 		case 8: // ^H
 			return keyBackspace, b[1:]
 		case 11: // ^K
@@ -278,44 +271,34 @@ func (t *Terminal) moveCursorToPos(pos int) {
 }
 
 func (t *Terminal) move(up, down, left, right int) {
-	m := []rune{}
-
-	// 1 unit up can be expressed as ^[[A or ^[A
-	// 5 units up can be expressed as ^[[5A
-
-	if up == 1 {
-		m = append(m, keyEscape, '[', 'A')
-	} else if up > 1 {
-		m = append(m, keyEscape, '[')
-		m = append(m, []rune(strconv.Itoa(up))...)
-		m = append(m, 'A')
+	movement := make([]rune, 3*(up+down+left+right))
+	m := movement
+	for i := 0; i < up; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'A'
+		m = m[3:]
 	}
-
-	if down == 1 {
-		m = append(m, keyEscape, '[', 'B')
-	} else if down > 1 {
-		m = append(m, keyEscape, '[')
-		m = append(m, []rune(strconv.Itoa(down))...)
-		m = append(m, 'B')
+	for i := 0; i < down; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'B'
+		m = m[3:]
 	}
-
-	if right == 1 {
-		m = append(m, keyEscape, '[', 'C')
-	} else if right > 1 {
-		m = append(m, keyEscape, '[')
-		m = append(m, []rune(strconv.Itoa(right))...)
-		m = append(m, 'C')
+	for i := 0; i < left; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'D'
+		m = m[3:]
 	}
-
-	if left == 1 {
-		m = append(m, keyEscape, '[', 'D')
-	} else if left > 1 {
-		m = append(m, keyEscape, '[')
-		m = append(m, []rune(strconv.Itoa(left))...)
-		m = append(m, 'D')
+	for i := 0; i < right; i++ {
+		m[0] = keyEscape
+		m[1] = '['
+		m[2] = 'C'
+		m = m[3:]
 	}
 
-	t.queue(m)
+	t.queue(movement)
 }
 
 func (t *Terminal) clearLineToRight() {
@@ -743,9 +726,6 @@ func (t *Terminal) readLine() (line string, err error) {
 						return "", io.EOF
 					}
 				}
-				if key == keyCtrlC {
-					return "", io.EOF
-				}
 				if key == keyPasteStart {
 					t.pasteActive = true
 					if len(t.line) == 0 {
@@ -948,8 +928,6 @@ func (s *stRingBuffer) NthPreviousEntry(n int) (value string, ok bool) {
 // readPasswordLine reads from reader until it finds \n or io.EOF.
 // The slice returned does not include the \n.
 // readPasswordLine also ignores any \r it finds.
-// Windows uses \r as end of line. So, on Windows, readPasswordLine
-// reads until it finds \r and ignores any \n it finds during processing.
 func readPasswordLine(reader io.Reader) ([]byte, error) {
 	var buf [1]byte
 	var ret []byte
@@ -958,20 +936,10 @@ func readPasswordLine(reader io.Reader) ([]byte, error) {
 		n, err := reader.Read(buf[:])
 		if n > 0 {
 			switch buf[0] {
-			case '\b':
-				if len(ret) > 0 {
-					ret = ret[:len(ret)-1]
-				}
 			case '\n':
-				if runtime.GOOS != "windows" {
-					return ret, nil
-				}
-				// otherwise ignore \n
+				return ret, nil
 			case '\r':
-				if runtime.GOOS == "windows" {
-					return ret, nil
-				}
-				// otherwise ignore \r
+				// remove \r from passwords on Windows
 			default:
 				ret = append(ret, buf[0])
 			}