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vendor: update resumable dependency
Updates resumable hash implementation to Go 1.8 equivalent. This should be a major speedup, since it includes a number of optimizations from Go 1.7. Signed-off-by: Stephen J Day <stephen.day@docker.com>
This commit is contained in:
Stephen J Day
164
vendor/github.com/stevvooe/resumable/sha512/sha512.go
generated
vendored
164
vendor/github.com/stevvooe/resumable/sha512/sha512.go
generated
vendored
@@ -2,8 +2,8 @@
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Package sha512 implements the SHA384 and SHA512 hash algorithms as defined
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// in FIPS 180-2.
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// Package sha512 implements the SHA-384, SHA-512, SHA-512/224, and SHA-512/256
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// hash algorithms as defined in FIPS 180-4.
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package sha512
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import (
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@@ -14,16 +14,27 @@ import (
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func init() {
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crypto.RegisterHash(crypto.SHA384, New384)
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crypto.RegisterHash(crypto.SHA512, New)
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crypto.RegisterHash(crypto.SHA512_224, New512_224)
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crypto.RegisterHash(crypto.SHA512_256, New512_256)
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}
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// The size of a SHA512 checksum in bytes.
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const Size = 64
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const (
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// Size is the size, in bytes, of a SHA-512 checksum.
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Size = 64
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// The size of a SHA384 checksum in bytes.
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const Size384 = 48
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// Size224 is the size, in bytes, of a SHA-512/224 checksum.
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Size224 = 28
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// The blocksize of SHA512 and SHA384 in bytes.
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const BlockSize = 128
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// Size256 is the size, in bytes, of a SHA-512/256 checksum.
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Size256 = 32
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// Size384 is the size, in bytes, of a SHA-384 checksum.
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Size384 = 48
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// BlockSize is the block size, in bytes, of the SHA-512/224,
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// SHA-512/256, SHA-384 and SHA-512 hash functions.
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BlockSize = 128
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)
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const (
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chunk = 128
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@@ -35,6 +46,22 @@ const (
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init5 = 0x9b05688c2b3e6c1f
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init6 = 0x1f83d9abfb41bd6b
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init7 = 0x5be0cd19137e2179
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init0_224 = 0x8c3d37c819544da2
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init1_224 = 0x73e1996689dcd4d6
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init2_224 = 0x1dfab7ae32ff9c82
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init3_224 = 0x679dd514582f9fcf
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init4_224 = 0x0f6d2b697bd44da8
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init5_224 = 0x77e36f7304c48942
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init6_224 = 0x3f9d85a86a1d36c8
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init7_224 = 0x1112e6ad91d692a1
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init0_256 = 0x22312194fc2bf72c
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init1_256 = 0x9f555fa3c84c64c2
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init2_256 = 0x2393b86b6f53b151
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init3_256 = 0x963877195940eabd
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init4_256 = 0x96283ee2a88effe3
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init5_256 = 0xbe5e1e2553863992
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init6_256 = 0x2b0199fc2c85b8aa
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init7_256 = 0x0eb72ddc81c52ca2
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init0_384 = 0xcbbb9d5dc1059ed8
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init1_384 = 0x629a292a367cd507
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init2_384 = 0x9159015a3070dd17
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@@ -47,24 +74,16 @@ const (
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// digest represents the partial evaluation of a checksum.
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type digest struct {
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h [8]uint64
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x [chunk]byte
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nx int
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len uint64
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is384 bool // mark if this digest is SHA-384
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h [8]uint64
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x [chunk]byte
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nx int
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len uint64
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function crypto.Hash
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}
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func (d *digest) Reset() {
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if !d.is384 {
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d.h[0] = init0
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d.h[1] = init1
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d.h[2] = init2
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d.h[3] = init3
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d.h[4] = init4
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d.h[5] = init5
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d.h[6] = init6
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d.h[7] = init7
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} else {
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switch d.function {
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case crypto.SHA384:
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d.h[0] = init0_384
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d.h[1] = init1_384
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d.h[2] = init2_384
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@@ -73,31 +92,77 @@ func (d *digest) Reset() {
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d.h[5] = init5_384
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d.h[6] = init6_384
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d.h[7] = init7_384
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case crypto.SHA512_224:
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d.h[0] = init0_224
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d.h[1] = init1_224
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d.h[2] = init2_224
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d.h[3] = init3_224
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d.h[4] = init4_224
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d.h[5] = init5_224
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d.h[6] = init6_224
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d.h[7] = init7_224
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case crypto.SHA512_256:
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d.h[0] = init0_256
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d.h[1] = init1_256
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d.h[2] = init2_256
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d.h[3] = init3_256
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d.h[4] = init4_256
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d.h[5] = init5_256
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d.h[6] = init6_256
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d.h[7] = init7_256
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default:
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d.h[0] = init0
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d.h[1] = init1
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d.h[2] = init2
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d.h[3] = init3
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d.h[4] = init4
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d.h[5] = init5
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d.h[6] = init6
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d.h[7] = init7
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}
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d.nx = 0
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d.len = 0
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}
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// New returns a new hash.Hash computing the SHA512 checksum.
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// New returns a new hash.Hash computing the SHA-512 checksum.
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func New() hash.Hash {
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d := new(digest)
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d := &digest{function: crypto.SHA512}
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d.Reset()
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return d
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}
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// New384 returns a new hash.Hash computing the SHA384 checksum.
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// New512_224 returns a new hash.Hash computing the SHA-512/224 checksum.
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func New512_224() hash.Hash {
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d := &digest{function: crypto.SHA512_224}
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d.Reset()
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return d
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}
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// New512_256 returns a new hash.Hash computing the SHA-512/256 checksum.
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func New512_256() hash.Hash {
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d := &digest{function: crypto.SHA512_256}
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d.Reset()
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return d
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}
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// New384 returns a new hash.Hash computing the SHA-384 checksum.
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func New384() hash.Hash {
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d := new(digest)
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d.is384 = true
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d := &digest{function: crypto.SHA384}
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d.Reset()
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return d
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}
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func (d *digest) Size() int {
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if !d.is384 {
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switch d.function {
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case crypto.SHA512_224:
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return Size224
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case crypto.SHA512_256:
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return Size256
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case crypto.SHA384:
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return Size384
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default:
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return Size
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}
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return Size384
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}
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func (d *digest) BlockSize() int { return BlockSize }
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@@ -130,14 +195,20 @@ func (d0 *digest) Sum(in []byte) []byte {
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d := new(digest)
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*d = *d0
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hash := d.checkSum()
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if d.is384 {
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switch d.function {
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case crypto.SHA384:
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return append(in, hash[:Size384]...)
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case crypto.SHA512_224:
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return append(in, hash[:Size224]...)
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case crypto.SHA512_256:
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return append(in, hash[:Size256]...)
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default:
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return append(in, hash[:]...)
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}
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return append(in, hash[:]...)
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}
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func (d *digest) checkSum() [Size]byte {
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// Padding. Add a 1 bit and 0 bits until 112 bytes mod 128.
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// Padding. Add a 1 bit and 0 bits until 112 bytes mod 128.
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len := d.len
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var tmp [128]byte
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tmp[0] = 0x80
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@@ -159,7 +230,7 @@ func (d *digest) checkSum() [Size]byte {
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}
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h := d.h[:]
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if d.is384 {
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if d.function == crypto.SHA384 {
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h = d.h[:6]
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}
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@@ -180,7 +251,7 @@ func (d *digest) checkSum() [Size]byte {
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// Sum512 returns the SHA512 checksum of the data.
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func Sum512(data []byte) [Size]byte {
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var d digest
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d := digest{function: crypto.SHA512}
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d.Reset()
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d.Write(data)
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return d.checkSum()
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@@ -188,11 +259,30 @@ func Sum512(data []byte) [Size]byte {
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// Sum384 returns the SHA384 checksum of the data.
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func Sum384(data []byte) (sum384 [Size384]byte) {
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var d digest
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d.is384 = true
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d := digest{function: crypto.SHA384}
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d.Reset()
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d.Write(data)
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sum := d.checkSum()
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copy(sum384[:], sum[:Size384])
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return
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}
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// Sum512_224 returns the Sum512/224 checksum of the data.
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func Sum512_224(data []byte) (sum224 [Size224]byte) {
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d := digest{function: crypto.SHA512_224}
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d.Reset()
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d.Write(data)
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sum := d.checkSum()
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copy(sum224[:], sum[:Size224])
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return
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}
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// Sum512_256 returns the Sum512/256 checksum of the data.
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func Sum512_256(data []byte) (sum256 [Size256]byte) {
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d := digest{function: crypto.SHA512_256}
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d.Reset()
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d.Write(data)
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sum := d.checkSum()
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copy(sum256[:], sum[:Size256])
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return
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}
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