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
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
|
package shacrypt
import (
"crypto/sha256"
"crypto/sha512"
"github.com/go-crypt/crypt/algorithm"
)
// NewVariant converts an identifier string to a shacrypt.Variant.
func NewVariant(identifier string) Variant {
switch identifier {
case AlgIdentifierSHA256, algorithm.DigestSHA256:
return VariantSHA256
case AlgIdentifierSHA512, algorithm.DigestSHA512:
return VariantSHA512
default:
return VariantSHA512
}
}
// Variant is a variant of the shacrypt.Digest.
type Variant int
const (
// VariantNone is a variant of the shacrypt.Digest which is unknown.
VariantNone Variant = iota
// VariantSHA256 is a variant of the shacrypt.Digest which uses SHA-256.
VariantSHA256
// VariantSHA512 is a variant of the shacrypt.Digest which uses SHA-512.
VariantSHA512
)
// String implements the fmt.Stringer returning a string representation of the shacrypt.Variant.
func (v Variant) String() (identifier string) {
switch v {
case VariantSHA256:
return algorithm.DigestSHA256
case VariantSHA512:
return algorithm.DigestSHA512
default:
return
}
}
// Prefix returns the shacrypt.Variant prefix identifier.
func (v Variant) Prefix() (prefix string) {
switch v {
case VariantSHA256:
return AlgIdentifierSHA256
case VariantSHA512:
return AlgIdentifierSHA512
default:
return AlgIdentifierSHA512
}
}
// Name returns the Variant name.
func (v Variant) Name() (s string) {
switch v {
case VariantSHA256:
return algorithm.DigestSHA256
case VariantSHA512:
return algorithm.DigestSHA512
default:
return algorithm.DigestSHA512
}
}
// HashFunc returns the internal HMAC HashFunc.
func (v Variant) HashFunc() algorithm.HashFunc {
switch v {
case VariantSHA256:
return sha256.New
case VariantSHA512:
return sha512.New
default:
return sha512.New
}
}
// DefaultIterations returns the default iterations for the particular variant.
func (v Variant) DefaultIterations() int {
switch v {
case VariantSHA512:
return IterationsDefaultSHA512
default:
return IterationsDefaultSHA256
}
}
|
