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path: root/src/pkg/crypto/sha512/sha512.go
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Diffstat (limited to 'src/pkg/crypto/sha512/sha512.go')
-rw-r--r--src/pkg/crypto/sha512/sha512.go198
1 files changed, 0 insertions, 198 deletions
diff --git a/src/pkg/crypto/sha512/sha512.go b/src/pkg/crypto/sha512/sha512.go
deleted file mode 100644
index bca7a91e2..000000000
--- a/src/pkg/crypto/sha512/sha512.go
+++ /dev/null
@@ -1,198 +0,0 @@
-// Copyright 2009 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 sha512 implements the SHA384 and SHA512 hash algorithms as defined
-// in FIPS 180-2.
-package sha512
-
-import (
- "crypto"
- "hash"
-)
-
-func init() {
- crypto.RegisterHash(crypto.SHA384, New384)
- crypto.RegisterHash(crypto.SHA512, New)
-}
-
-// The size of a SHA512 checksum in bytes.
-const Size = 64
-
-// The size of a SHA384 checksum in bytes.
-const Size384 = 48
-
-// The blocksize of SHA512 and SHA384 in bytes.
-const BlockSize = 128
-
-const (
- chunk = 128
- init0 = 0x6a09e667f3bcc908
- init1 = 0xbb67ae8584caa73b
- init2 = 0x3c6ef372fe94f82b
- init3 = 0xa54ff53a5f1d36f1
- init4 = 0x510e527fade682d1
- init5 = 0x9b05688c2b3e6c1f
- init6 = 0x1f83d9abfb41bd6b
- init7 = 0x5be0cd19137e2179
- init0_384 = 0xcbbb9d5dc1059ed8
- init1_384 = 0x629a292a367cd507
- init2_384 = 0x9159015a3070dd17
- init3_384 = 0x152fecd8f70e5939
- init4_384 = 0x67332667ffc00b31
- init5_384 = 0x8eb44a8768581511
- init6_384 = 0xdb0c2e0d64f98fa7
- init7_384 = 0x47b5481dbefa4fa4
-)
-
-// digest represents the partial evaluation of a checksum.
-type digest struct {
- h [8]uint64
- x [chunk]byte
- nx int
- len uint64
- is384 bool // mark if this digest is SHA-384
-}
-
-func (d *digest) Reset() {
- if !d.is384 {
- d.h[0] = init0
- d.h[1] = init1
- d.h[2] = init2
- d.h[3] = init3
- d.h[4] = init4
- d.h[5] = init5
- d.h[6] = init6
- d.h[7] = init7
- } else {
- d.h[0] = init0_384
- d.h[1] = init1_384
- d.h[2] = init2_384
- d.h[3] = init3_384
- d.h[4] = init4_384
- d.h[5] = init5_384
- d.h[6] = init6_384
- d.h[7] = init7_384
- }
- d.nx = 0
- d.len = 0
-}
-
-// New returns a new hash.Hash computing the SHA512 checksum.
-func New() hash.Hash {
- d := new(digest)
- d.Reset()
- return d
-}
-
-// New384 returns a new hash.Hash computing the SHA384 checksum.
-func New384() hash.Hash {
- d := new(digest)
- d.is384 = true
- d.Reset()
- return d
-}
-
-func (d *digest) Size() int {
- if !d.is384 {
- return Size
- }
- return Size384
-}
-
-func (d *digest) BlockSize() int { return BlockSize }
-
-func (d *digest) Write(p []byte) (nn int, err error) {
- nn = len(p)
- d.len += uint64(nn)
- if d.nx > 0 {
- n := copy(d.x[d.nx:], p)
- d.nx += n
- if d.nx == chunk {
- block(d, d.x[:])
- d.nx = 0
- }
- p = p[n:]
- }
- if len(p) >= chunk {
- n := len(p) &^ (chunk - 1)
- block(d, p[:n])
- p = p[n:]
- }
- if len(p) > 0 {
- d.nx = copy(d.x[:], p)
- }
- return
-}
-
-func (d0 *digest) Sum(in []byte) []byte {
- // Make a copy of d0 so that caller can keep writing and summing.
- d := new(digest)
- *d = *d0
- hash := d.checkSum()
- if d.is384 {
- return append(in, hash[:Size384]...)
- }
- return append(in, hash[:]...)
-}
-
-func (d *digest) checkSum() [Size]byte {
- // Padding. Add a 1 bit and 0 bits until 112 bytes mod 128.
- len := d.len
- var tmp [128]byte
- tmp[0] = 0x80
- if len%128 < 112 {
- d.Write(tmp[0 : 112-len%128])
- } else {
- d.Write(tmp[0 : 128+112-len%128])
- }
-
- // Length in bits.
- len <<= 3
- for i := uint(0); i < 16; i++ {
- tmp[i] = byte(len >> (120 - 8*i))
- }
- d.Write(tmp[0:16])
-
- if d.nx != 0 {
- panic("d.nx != 0")
- }
-
- h := d.h[:]
- if d.is384 {
- h = d.h[:6]
- }
-
- var digest [Size]byte
- for i, s := range h {
- digest[i*8] = byte(s >> 56)
- digest[i*8+1] = byte(s >> 48)
- digest[i*8+2] = byte(s >> 40)
- digest[i*8+3] = byte(s >> 32)
- digest[i*8+4] = byte(s >> 24)
- digest[i*8+5] = byte(s >> 16)
- digest[i*8+6] = byte(s >> 8)
- digest[i*8+7] = byte(s)
- }
-
- return digest
-}
-
-// Sum512 returns the SHA512 checksum of the data.
-func Sum512(data []byte) [Size]byte {
- var d digest
- d.Reset()
- d.Write(data)
- return d.checkSum()
-}
-
-// Sum384 returns the SHA384 checksum of the data.
-func Sum384(data []byte) (sum384 [Size384]byte) {
- var d digest
- d.is384 = true
- d.Reset()
- d.Write(data)
- sum := d.checkSum()
- copy(sum384[:], sum[:Size384])
- return
-}