aboutsummaryrefslogtreecommitdiffstats
path: root/crypto/sha3/hashes.go
blob: fa0d7b436245deab3de83ddfce25569b7a13fa1f (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
// 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} }

// NewKeccak512 creates a new Keccak-512 hash.
func NewKeccak512() hash.Hash { return &state{rate: 72, outputLen: 64, 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
}