diff options
Diffstat (limited to 'vendor/golang.org/x/crypto/blake2b')
6 files changed, 130 insertions, 41 deletions
diff --git a/vendor/golang.org/x/crypto/blake2b/blake2b.go b/vendor/golang.org/x/crypto/blake2b/blake2b.go index 6dedb89..58ea875 100644 --- a/vendor/golang.org/x/crypto/blake2b/blake2b.go +++ b/vendor/golang.org/x/crypto/blake2b/blake2b.go @@ -92,6 +92,8 @@ func New256(key []byte) (hash.Hash, error) { return newDigest(Size256, key) } // values equal or greater than: // - 32 if BLAKE2b is used as a hash function (The key is zero bytes long). // - 16 if BLAKE2b is used as a MAC function (The key is at least 16 bytes long). +// When the key is nil, the returned hash.Hash implements BinaryMarshaler +// and BinaryUnmarshaler for state (de)serialization as documented by hash.Hash. func New(size int, key []byte) (hash.Hash, error) { return newDigest(size, key) } func newDigest(hashSize int, key []byte) (*digest, error) { @@ -150,6 +152,50 @@ type digest struct { keyLen int } +const ( + magic = "b2b" + marshaledSize = len(magic) + 8*8 + 2*8 + 1 + BlockSize + 1 +) + +func (d *digest) MarshalBinary() ([]byte, error) { + if d.keyLen != 0 { + return nil, errors.New("crypto/blake2b: cannot marshal MACs") + } + b := make([]byte, 0, marshaledSize) + b = append(b, magic...) + for i := 0; i < 8; i++ { + b = appendUint64(b, d.h[i]) + } + b = appendUint64(b, d.c[0]) + b = appendUint64(b, d.c[1]) + // Maximum value for size is 64 + b = append(b, byte(d.size)) + b = append(b, d.block[:]...) + b = append(b, byte(d.offset)) + return b, nil +} + +func (d *digest) UnmarshalBinary(b []byte) error { + if len(b) < len(magic) || string(b[:len(magic)]) != magic { + return errors.New("crypto/blake2b: invalid hash state identifier") + } + if len(b) != marshaledSize { + return errors.New("crypto/blake2b: invalid hash state size") + } + b = b[len(magic):] + for i := 0; i < 8; i++ { + b, d.h[i] = consumeUint64(b) + } + b, d.c[0] = consumeUint64(b) + b, d.c[1] = consumeUint64(b) + d.size = int(b[0]) + b = b[1:] + copy(d.block[:], b[:BlockSize]) + b = b[BlockSize:] + d.offset = int(b[0]) + return nil +} + func (d *digest) BlockSize() int { return BlockSize } func (d *digest) Size() int { return d.size } @@ -219,3 +265,25 @@ func (d *digest) finalize(hash *[Size]byte) { binary.LittleEndian.PutUint64(hash[8*i:], v) } } + +func appendUint64(b []byte, x uint64) []byte { + var a [8]byte + binary.BigEndian.PutUint64(a[:], x) + return append(b, a[:]...) +} + +func appendUint32(b []byte, x uint32) []byte { + var a [4]byte + binary.BigEndian.PutUint32(a[:], x) + return append(b, a[:]...) +} + +func consumeUint64(b []byte) ([]byte, uint64) { + x := binary.BigEndian.Uint64(b) + return b[8:], x +} + +func consumeUint32(b []byte) ([]byte, uint32) { + x := binary.BigEndian.Uint32(b) + return b[4:], x +} diff --git a/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.go b/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.go index 8c41cf6..4d31dd0 100644 --- a/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.go +++ b/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.go @@ -6,22 +6,15 @@ package blake2b +import "golang.org/x/sys/cpu" + func init() { - useAVX2 = supportsAVX2() - useAVX = supportsAVX() - useSSE4 = supportsSSE4() + useAVX2 = cpu.X86.HasAVX2 + useAVX = cpu.X86.HasAVX + useSSE4 = cpu.X86.HasSSE41 } //go:noescape -func supportsSSE4() bool - -//go:noescape -func supportsAVX() bool - -//go:noescape -func supportsAVX2() bool - -//go:noescape func hashBlocksAVX2(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) //go:noescape @@ -31,13 +24,14 @@ func hashBlocksAVX(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) func hashBlocksSSE4(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) func hashBlocks(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) { - if useAVX2 { + switch { + case useAVX2: hashBlocksAVX2(h, c, flag, blocks) - } else if useAVX { + case useAVX: hashBlocksAVX(h, c, flag, blocks) - } else if useSSE4 { + case useSSE4: hashBlocksSSE4(h, c, flag, blocks) - } else { + default: hashBlocksGeneric(h, c, flag, blocks) } } diff --git a/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.s b/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.s index 784bce6..5593b1b 100644 --- a/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.s +++ b/vendor/golang.org/x/crypto/blake2b/blake2bAVX2_amd64.s @@ -748,15 +748,3 @@ noinc: MOVQ BP, SP RET - -// func supportsAVX2() bool -TEXT ·supportsAVX2(SB), 4, $0-1 - MOVQ runtime·support_avx2(SB), AX - MOVB AX, ret+0(FP) - RET - -// func supportsAVX() bool -TEXT ·supportsAVX(SB), 4, $0-1 - MOVQ runtime·support_avx(SB), AX - MOVB AX, ret+0(FP) - RET diff --git a/vendor/golang.org/x/crypto/blake2b/blake2b_amd64.go b/vendor/golang.org/x/crypto/blake2b/blake2b_amd64.go index 2ab7c30..30e2fcd 100644 --- a/vendor/golang.org/x/crypto/blake2b/blake2b_amd64.go +++ b/vendor/golang.org/x/crypto/blake2b/blake2b_amd64.go @@ -6,14 +6,13 @@ package blake2b +import "golang.org/x/sys/cpu" + func init() { - useSSE4 = supportsSSE4() + useSSE4 = cpu.X86.HasSSE41 } //go:noescape -func supportsSSE4() bool - -//go:noescape func hashBlocksSSE4(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) func hashBlocks(h *[8]uint64, c *[2]uint64, flag uint64, blocks []byte) { diff --git a/vendor/golang.org/x/crypto/blake2b/blake2b_amd64.s b/vendor/golang.org/x/crypto/blake2b/blake2b_amd64.s index 6453074..578e947 100644 --- a/vendor/golang.org/x/crypto/blake2b/blake2b_amd64.s +++ b/vendor/golang.org/x/crypto/blake2b/blake2b_amd64.s @@ -279,12 +279,3 @@ noinc: MOVQ BP, SP RET - -// func supportsSSE4() bool -TEXT ·supportsSSE4(SB), 4, $0-1 - MOVL $1, AX - CPUID - SHRL $19, CX // Bit 19 indicates SSE4 support - ANDL $1, CX // CX != 0 if support SSE4 - MOVB CX, ret+0(FP) - RET diff --git a/vendor/golang.org/x/crypto/blake2b/blake2b_test.go b/vendor/golang.org/x/crypto/blake2b/blake2b_test.go index 5d68bbf..723327a 100644 --- a/vendor/golang.org/x/crypto/blake2b/blake2b_test.go +++ b/vendor/golang.org/x/crypto/blake2b/blake2b_test.go @@ -6,6 +6,7 @@ package blake2b import ( "bytes" + "encoding" "encoding/hex" "fmt" "hash" @@ -69,6 +70,54 @@ func TestHashes2X(t *testing.T) { testHashes2X(t) } +func TestMarshal(t *testing.T) { + input := make([]byte, 255) + for i := range input { + input[i] = byte(i) + } + for _, size := range []int{Size, Size256, Size384, 12, 25, 63} { + for i := 0; i < 256; i++ { + h, err := New(size, nil) + if err != nil { + t.Fatalf("size=%d, len(input)=%d: error from New(%v, nil): %v", size, i, size, err) + } + h2, err := New(size, nil) + if err != nil { + t.Fatalf("size=%d, len(input)=%d: error from New(%v, nil): %v", size, i, size, err) + } + + h.Write(input[:i/2]) + halfstate, err := h.(encoding.BinaryMarshaler).MarshalBinary() + if err != nil { + t.Fatalf("size=%d, len(input)=%d: could not marshal: %v", size, i, err) + } + err = h2.(encoding.BinaryUnmarshaler).UnmarshalBinary(halfstate) + if err != nil { + t.Fatalf("size=%d, len(input)=%d: could not unmarshal: %v", size, i, err) + } + + h.Write(input[i/2 : i]) + sum := h.Sum(nil) + h2.Write(input[i/2 : i]) + sum2 := h2.Sum(nil) + + if !bytes.Equal(sum, sum2) { + t.Fatalf("size=%d, len(input)=%d: results do not match; sum = %v, sum2 = %v", size, i, sum, sum2) + } + + h3, err := New(size, nil) + if err != nil { + t.Fatalf("size=%d, len(input)=%d: error from New(%v, nil): %v", size, i, size, err) + } + h3.Write(input[:i]) + sum3 := h3.Sum(nil) + if !bytes.Equal(sum, sum3) { + t.Fatalf("size=%d, len(input)=%d: sum = %v, want %v", size, i, sum, sum3) + } + } + } +} + func testHashes(t *testing.T) { key, _ := hex.DecodeString("000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f202122232425262728292a2b2c2d2e2f303132333435363738393a3b3c3d3e3f") |