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authorLibravatar dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>2023-05-29 13:47:11 +0100
committerLibravatar GitHub <noreply@github.com>2023-05-29 13:47:11 +0100
commit9ed96bc57083b4261a9e6571d86ec94b1e771e40 (patch)
tree87b6521816ed4d1242f47a731895cd5a8c6cabc6 /vendor/github.com/minio/sha256-simd/sha256.go
parent[bugfix/chore] Inbox post updates (#1821) (diff)
downloadgotosocial-9ed96bc57083b4261a9e6571d86ec94b1e771e40.tar.xz
[chore]: Bump github.com/minio/minio-go/v7 from 7.0.53 to 7.0.55 (#1844)
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Diffstat (limited to 'vendor/github.com/minio/sha256-simd/sha256.go')
-rw-r--r--vendor/github.com/minio/sha256-simd/sha256.go131
1 files changed, 100 insertions, 31 deletions
diff --git a/vendor/github.com/minio/sha256-simd/sha256.go b/vendor/github.com/minio/sha256-simd/sha256.go
index b137ead9f..f146bbdb5 100644
--- a/vendor/github.com/minio/sha256-simd/sha256.go
+++ b/vendor/github.com/minio/sha256-simd/sha256.go
@@ -19,10 +19,8 @@ package sha256
import (
"crypto/sha256"
"encoding/binary"
+ "errors"
"hash"
- "runtime"
-
- "github.com/klauspost/cpuid/v2"
)
// Size - The size of a SHA256 checksum in bytes.
@@ -68,42 +66,34 @@ func (d *digest) Reset() {
type blockfuncType int
const (
- blockfuncGeneric blockfuncType = iota
- blockfuncSha blockfuncType = iota
- blockfuncArm blockfuncType = iota
+ blockfuncStdlib blockfuncType = iota
+ blockfuncIntelSha
+ blockfuncArmSha2
+ blockfuncForceGeneric = -1
)
var blockfunc blockfuncType
func init() {
- blockfunc = blockfuncGeneric
switch {
- case hasSHAExtensions():
- blockfunc = blockfuncSha
+ case hasIntelSha:
+ blockfunc = blockfuncIntelSha
case hasArmSha2():
- blockfunc = blockfuncArm
- default:
- blockfunc = blockfuncGeneric
+ blockfunc = blockfuncArmSha2
}
}
-var avx512 = cpuid.CPU.Supports(cpuid.AVX512F, cpuid.AVX512DQ, cpuid.AVX512BW, cpuid.AVX512VL)
-
-// hasSHAExtensions return whether the cpu supports SHA extensions.
-func hasSHAExtensions() bool {
- return cpuid.CPU.Supports(cpuid.SHA, cpuid.SSSE3, cpuid.SSE4) && runtime.GOARCH == "amd64"
-}
-
// New returns a new hash.Hash computing the SHA256 checksum.
func New() hash.Hash {
- if blockfunc != blockfuncGeneric {
- d := new(digest)
- d.Reset()
- return d
+ if blockfunc == blockfuncStdlib {
+ // Fallback to the standard golang implementation
+ // if no features were found.
+ return sha256.New()
}
- // Fallback to the standard golang implementation
- // if no features were found.
- return sha256.New()
+
+ d := new(digest)
+ d.Reset()
+ return d
}
// Sum256 - single caller sha256 helper
@@ -272,11 +262,11 @@ func (d *digest) checkSum() (digest [Size]byte) {
}
func block(dig *digest, p []byte) {
- if blockfunc == blockfuncSha {
- blockShaGo(dig, p)
- } else if blockfunc == blockfuncArm {
- blockArmGo(dig, p)
- } else if blockfunc == blockfuncGeneric {
+ if blockfunc == blockfuncIntelSha {
+ blockIntelShaGo(dig, p)
+ } else if blockfunc == blockfuncArmSha2 {
+ blockArmSha2Go(dig, p)
+ } else {
blockGeneric(dig, p)
}
}
@@ -397,3 +387,82 @@ var _K = []uint32{
0xbef9a3f7,
0xc67178f2,
}
+
+const (
+ magic256 = "sha\x03"
+ marshaledSize = len(magic256) + 8*4 + chunk + 8
+)
+
+func (d *digest) MarshalBinary() ([]byte, error) {
+ b := make([]byte, 0, marshaledSize)
+ b = append(b, magic256...)
+ b = appendUint32(b, d.h[0])
+ b = appendUint32(b, d.h[1])
+ b = appendUint32(b, d.h[2])
+ b = appendUint32(b, d.h[3])
+ b = appendUint32(b, d.h[4])
+ b = appendUint32(b, d.h[5])
+ b = appendUint32(b, d.h[6])
+ b = appendUint32(b, d.h[7])
+ b = append(b, d.x[:d.nx]...)
+ b = b[:len(b)+len(d.x)-d.nx] // already zero
+ b = appendUint64(b, d.len)
+ return b, nil
+}
+
+func (d *digest) UnmarshalBinary(b []byte) error {
+ if len(b) < len(magic256) || string(b[:len(magic256)]) != magic256 {
+ return errors.New("crypto/sha256: invalid hash state identifier")
+ }
+ if len(b) != marshaledSize {
+ return errors.New("crypto/sha256: invalid hash state size")
+ }
+ b = b[len(magic256):]
+ b, d.h[0] = consumeUint32(b)
+ b, d.h[1] = consumeUint32(b)
+ b, d.h[2] = consumeUint32(b)
+ b, d.h[3] = consumeUint32(b)
+ b, d.h[4] = consumeUint32(b)
+ b, d.h[5] = consumeUint32(b)
+ b, d.h[6] = consumeUint32(b)
+ b, d.h[7] = consumeUint32(b)
+ b = b[copy(d.x[:], b):]
+ b, d.len = consumeUint64(b)
+ d.nx = int(d.len % chunk)
+ return nil
+}
+
+func appendUint32(b []byte, v uint32) []byte {
+ return append(b,
+ byte(v>>24),
+ byte(v>>16),
+ byte(v>>8),
+ byte(v),
+ )
+}
+
+func appendUint64(b []byte, v uint64) []byte {
+ return append(b,
+ byte(v>>56),
+ byte(v>>48),
+ byte(v>>40),
+ byte(v>>32),
+ byte(v>>24),
+ byte(v>>16),
+ byte(v>>8),
+ byte(v),
+ )
+}
+
+func consumeUint64(b []byte) ([]byte, uint64) {
+ _ = b[7]
+ x := uint64(b[7]) | uint64(b[6])<<8 | uint64(b[5])<<16 | uint64(b[4])<<24 |
+ uint64(b[3])<<32 | uint64(b[2])<<40 | uint64(b[1])<<48 | uint64(b[0])<<56
+ return b[8:], x
+}
+
+func consumeUint32(b []byte) ([]byte, uint32) {
+ _ = b[3]
+ x := uint32(b[3]) | uint32(b[2])<<8 | uint32(b[1])<<16 | uint32(b[0])<<24
+ return b[4:], x
+}