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crypto/sha*: replace putUint{32,64} helpers

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Replaces putUint{32,64} functions in crypto/sha* packages with the
equivalent functions encoding/binary.BigEndian.PutUint{32,64}.

Change-Id: I9208d2125202ea9c97777560e6917d21893aced0
Reviewed-on: https://go-review.googlesource.com/c/go/+/156117
Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
Run-TryBot: Brad Fitzpatrick <bradfitz@golang.org>
TryBot-Result: Gobot Gobot <gobot@golang.org>
This commit is contained in:
Michael McLoughlin 2019-01-02 18:47:33 -08:00 committed by Brad Fitzpatrick
parent 2500ac20c0
commit 3ce865d7a0
3 changed files with 33 additions and 82 deletions
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37
src/crypto/sha1/sha1.go
View File

@ -10,6 +10,7 @@ package sha1
import (
"crypto"
"encoding/binary"
"errors"
"hash"
)
@ -81,13 +82,13 @@ func (d *digest) UnmarshalBinary(b []byte) error {
func appendUint64(b []byte, x uint64) []byte {
var a [8]byte
putUint64(a[:], x)
binary.BigEndian.PutUint64(a[:], x)
return append(b, a[:]...)
}
func appendUint32(b []byte, x uint32) []byte {
var a [4]byte
putUint32(a[:], x)
binary.BigEndian.PutUint32(a[:], x)
return append(b, a[:]...)
}
@ -170,7 +171,7 @@ func (d *digest) checkSum() [Size]byte {
// Length in bits.
len <<= 3
putUint64(tmp[:], len)
binary.BigEndian.PutUint64(tmp[:], len)
d.Write(tmp[0:8])
if d.nx != 0 {
@ -179,11 +180,11 @@ func (d *digest) checkSum() [Size]byte {
var digest [Size]byte
putUint32(digest[0:], d.h[0])
putUint32(digest[4:], d.h[1])
putUint32(digest[8:], d.h[2])
putUint32(digest[12:], d.h[3])
putUint32(digest[16:], d.h[4])
binary.BigEndian.PutUint32(digest[0:], d.h[0])
binary.BigEndian.PutUint32(digest[4:], d.h[1])
binary.BigEndian.PutUint32(digest[8:], d.h[2])
binary.BigEndian.PutUint32(digest[12:], d.h[3])
binary.BigEndian.PutUint32(digest[16:], d.h[4])
return digest
}
@ -263,23 +264,3 @@ func Sum(data []byte) [Size]byte {
d.Write(data)
return d.checkSum()
}
func putUint64(x []byte, s uint64) {
_ = x[7]
x[0] = byte(s >> 56)
x[1] = byte(s >> 48)
x[2] = byte(s >> 40)
x[3] = byte(s >> 32)
x[4] = byte(s >> 24)
x[5] = byte(s >> 16)
x[6] = byte(s >> 8)
x[7] = byte(s)
}
func putUint32(x []byte, s uint32) {
_ = x[3]
x[0] = byte(s >> 24)
x[1] = byte(s >> 16)
x[2] = byte(s >> 8)
x[3] = byte(s)
}

43
src/crypto/sha256/sha256.go
View File

@ -8,6 +8,7 @@ package sha256
import (
"crypto"
"encoding/binary"
"errors"
"hash"
)
@ -104,35 +105,15 @@ func (d *digest) UnmarshalBinary(b []byte) error {
return nil
}
func putUint32(x []byte, s uint32) {
_ = x[3]
x[0] = byte(s >> 24)
x[1] = byte(s >> 16)
x[2] = byte(s >> 8)
x[3] = byte(s)
}
func putUint64(x []byte, s uint64) {
_ = x[7]
x[0] = byte(s >> 56)
x[1] = byte(s >> 48)
x[2] = byte(s >> 40)
x[3] = byte(s >> 32)
x[4] = byte(s >> 24)
x[5] = byte(s >> 16)
x[6] = byte(s >> 8)
x[7] = byte(s)
}
func appendUint64(b []byte, x uint64) []byte {
var a [8]byte
putUint64(a[:], x)
binary.BigEndian.PutUint64(a[:], x)
return append(b, a[:]...)
}
func appendUint32(b []byte, x uint32) []byte {
var a [4]byte
putUint32(a[:], x)
binary.BigEndian.PutUint32(a[:], x)
return append(b, a[:]...)
}
@ -246,7 +227,7 @@ func (d *digest) checkSum() [Size]byte {
// Length in bits.
len <<= 3
putUint64(tmp[:], len)
binary.BigEndian.PutUint64(tmp[:], len)
d.Write(tmp[0:8])
if d.nx != 0 {
@ -255,15 +236,15 @@ func (d *digest) checkSum() [Size]byte {
var digest [Size]byte
putUint32(digest[0:], d.h[0])
putUint32(digest[4:], d.h[1])
putUint32(digest[8:], d.h[2])
putUint32(digest[12:], d.h[3])
putUint32(digest[16:], d.h[4])
putUint32(digest[20:], d.h[5])
putUint32(digest[24:], d.h[6])
binary.BigEndian.PutUint32(digest[0:], d.h[0])
binary.BigEndian.PutUint32(digest[4:], d.h[1])
binary.BigEndian.PutUint32(digest[8:], d.h[2])
binary.BigEndian.PutUint32(digest[12:], d.h[3])
binary.BigEndian.PutUint32(digest[16:], d.h[4])
binary.BigEndian.PutUint32(digest[20:], d.h[5])
binary.BigEndian.PutUint32(digest[24:], d.h[6])
if !d.is224 {
putUint32(digest[28:], d.h[7])
binary.BigEndian.PutUint32(digest[28:], d.h[7])
}
return digest

35
src/crypto/sha512/sha512.go
View File

@ -12,6 +12,7 @@ package sha512
import (
"crypto"
"encoding/binary"
"errors"
"hash"
)
@ -195,21 +196,9 @@ func (d *digest) UnmarshalBinary(b []byte) error {
return nil
}
func putUint64(x []byte, s uint64) {
_ = x[7]
x[0] = byte(s >> 56)
x[1] = byte(s >> 48)
x[2] = byte(s >> 40)
x[3] = byte(s >> 32)
x[4] = byte(s >> 24)
x[5] = byte(s >> 16)
x[6] = byte(s >> 8)
x[7] = byte(s)
}
func appendUint64(b []byte, x uint64) []byte {
var a [8]byte
putUint64(a[:], x)
binary.BigEndian.PutUint64(a[:], x)
return append(b, a[:]...)
}
@ -316,8 +305,8 @@ func (d *digest) checkSum() [Size]byte {
// Length in bits.
len <<= 3
putUint64(tmp[0:], 0) // upper 64 bits are always zero, because len variable has type uint64
putUint64(tmp[8:], len)
binary.BigEndian.PutUint64(tmp[0:], 0) // upper 64 bits are always zero, because len variable has type uint64
binary.BigEndian.PutUint64(tmp[8:], len)
d.Write(tmp[0:16])
if d.nx != 0 {
@ -325,15 +314,15 @@ func (d *digest) checkSum() [Size]byte {
}
var digest [Size]byte
putUint64(digest[0:], d.h[0])
putUint64(digest[8:], d.h[1])
putUint64(digest[16:], d.h[2])
putUint64(digest[24:], d.h[3])
putUint64(digest[32:], d.h[4])
putUint64(digest[40:], d.h[5])
binary.BigEndian.PutUint64(digest[0:], d.h[0])
binary.BigEndian.PutUint64(digest[8:], d.h[1])
binary.BigEndian.PutUint64(digest[16:], d.h[2])
binary.BigEndian.PutUint64(digest[24:], d.h[3])
binary.BigEndian.PutUint64(digest[32:], d.h[4])
binary.BigEndian.PutUint64(digest[40:], d.h[5])
if d.function != crypto.SHA384 {
putUint64(digest[48:], d.h[6])
putUint64(digest[56:], d.h[7])
binary.BigEndian.PutUint64(digest[48:], d.h[6])
binary.BigEndian.PutUint64(digest[56:], d.h[7])
}
return digest