forked from cerc-io/plugeth
c20d6e5e4e
This hash function is slightly different from the standarized NIST SHA-3 as both of them use different domain separation bits.
69 lines
2.0 KiB
Go
69 lines
2.0 KiB
Go
// Copyright 2014 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 sha3
|
|
|
|
// This file provides functions for creating instances of the SHA-3
|
|
// and SHAKE hash functions, as well as utility functions for hashing
|
|
// bytes.
|
|
|
|
import (
|
|
"hash"
|
|
)
|
|
|
|
// NewKeccak256 creates a new Keccak-256 hash.
|
|
func NewKeccak256() hash.Hash { return &state{rate: 136, outputLen: 32, dsbyte: 0x01} }
|
|
|
|
// New224 creates a new SHA3-224 hash.
|
|
// Its generic security strength is 224 bits against preimage attacks,
|
|
// and 112 bits against collision attacks.
|
|
func New224() hash.Hash { return &state{rate: 144, outputLen: 28, dsbyte: 0x06} }
|
|
|
|
// New256 creates a new SHA3-256 hash.
|
|
// Its generic security strength is 256 bits against preimage attacks,
|
|
// and 128 bits against collision attacks.
|
|
func New256() hash.Hash { return &state{rate: 136, outputLen: 32, dsbyte: 0x06} }
|
|
|
|
// New384 creates a new SHA3-384 hash.
|
|
// Its generic security strength is 384 bits against preimage attacks,
|
|
// and 192 bits against collision attacks.
|
|
func New384() hash.Hash { return &state{rate: 104, outputLen: 48, dsbyte: 0x06} }
|
|
|
|
// New512 creates a new SHA3-512 hash.
|
|
// Its generic security strength is 512 bits against preimage attacks,
|
|
// and 256 bits against collision attacks.
|
|
func New512() hash.Hash { return &state{rate: 72, outputLen: 64, dsbyte: 0x06} }
|
|
|
|
// Sum224 returns the SHA3-224 digest of the data.
|
|
func Sum224(data []byte) (digest [28]byte) {
|
|
h := New224()
|
|
h.Write(data)
|
|
h.Sum(digest[:0])
|
|
return
|
|
}
|
|
|
|
// Sum256 returns the SHA3-256 digest of the data.
|
|
func Sum256(data []byte) (digest [32]byte) {
|
|
h := New256()
|
|
h.Write(data)
|
|
h.Sum(digest[:0])
|
|
return
|
|
}
|
|
|
|
// Sum384 returns the SHA3-384 digest of the data.
|
|
func Sum384(data []byte) (digest [48]byte) {
|
|
h := New384()
|
|
h.Write(data)
|
|
h.Sum(digest[:0])
|
|
return
|
|
}
|
|
|
|
// Sum512 returns the SHA3-512 digest of the data.
|
|
func Sum512(data []byte) (digest [64]byte) {
|
|
h := New512()
|
|
h.Write(data)
|
|
h.Sum(digest[:0])
|
|
return
|
|
}
|