-
Notifications
You must be signed in to change notification settings - Fork 22
/
parse.go
194 lines (150 loc) · 4.73 KB
/
parse.go
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
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
package elgamal
import (
"errors"
"crypto/x509"
"encoding/pem"
"github.com/deatil/go-cryptobin/elgamal"
cryptobin_pkcs8s "github.com/deatil/go-cryptobin/pkcs8s"
)
var (
ErrKeyMustBePEMEncoded = errors.New("invalid key: Key must be a PEM encoded PKCS1 or PKCS8 key")
ErrNotEIGamalPrivateKey = errors.New("key is not a valid EIGamal private key")
ErrNotEIGamalPublicKey = errors.New("key is not a valid EIGamal public key")
)
// 解析私钥
func (this EIGamal) ParsePKCS1PrivateKeyFromPEM(key []byte) (*elgamal.PrivateKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
// Parse the key
var parsedKey any
if parsedKey, err = elgamal.ParsePKCS1PrivateKey(block.Bytes); err != nil {
return nil, err
}
var pkey *elgamal.PrivateKey
var ok bool
if pkey, ok = parsedKey.(*elgamal.PrivateKey); !ok {
return nil, ErrNotEIGamalPrivateKey
}
return pkey, nil
}
// 解析私钥带密码
func (this EIGamal) ParsePKCS1PrivateKeyFromPEMWithPassword(key []byte, password string) (*elgamal.PrivateKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
var blockDecrypted []byte
if blockDecrypted, err = x509.DecryptPEMBlock(block, []byte(password)); err != nil {
return nil, err
}
// Parse the key
var parsedKey any
if parsedKey, err = elgamal.ParsePKCS1PrivateKey(blockDecrypted); err != nil {
return nil, err
}
var pkey *elgamal.PrivateKey
var ok bool
if pkey, ok = parsedKey.(*elgamal.PrivateKey); !ok {
return nil, ErrNotEIGamalPrivateKey
}
return pkey, nil
}
// 解析公钥
func (this EIGamal) ParsePKCS1PublicKeyFromPEM(key []byte) (*elgamal.PublicKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
// Parse the key
var parsedKey any
if parsedKey, err = elgamal.ParsePKCS1PublicKey(block.Bytes); err != nil {
return nil, err
}
var pkey *elgamal.PublicKey
var ok bool
if pkey, ok = parsedKey.(*elgamal.PublicKey); !ok {
return nil, ErrNotEIGamalPublicKey
}
return pkey, nil
}
// =============
// 解析私钥 PKCS8
func (this EIGamal) ParsePKCS8PrivateKeyFromPEM(key []byte) (*elgamal.PrivateKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
// Parse the key
var parsedKey any
if parsedKey, err = elgamal.ParsePKCS8PrivateKey(block.Bytes); err != nil {
return nil, err
}
var pkey *elgamal.PrivateKey
var ok bool
if pkey, ok = parsedKey.(*elgamal.PrivateKey); !ok {
return nil, ErrNotEIGamalPrivateKey
}
return pkey, nil
}
// 解析 PKCS8 带密码的私钥
func (this EIGamal) ParsePKCS8PrivateKeyFromPEMWithPassword(key []byte, password string) (*elgamal.PrivateKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
var blockDecrypted []byte
if blockDecrypted, err = cryptobin_pkcs8s.DecryptPEMBlock(block, []byte(password)); err != nil {
return nil, err
}
var parsedKey any
if parsedKey, err = elgamal.ParsePKCS8PrivateKey(blockDecrypted); err != nil {
return nil, err
}
var pkey *elgamal.PrivateKey
var ok bool
if pkey, ok = parsedKey.(*elgamal.PrivateKey); !ok {
return nil, ErrNotEIGamalPrivateKey
}
return pkey, nil
}
// 解析公钥 PKCS8
func (this EIGamal) ParsePKCS8PublicKeyFromPEM(key []byte) (*elgamal.PublicKey, error) {
var err error
// Parse PEM block
var block *pem.Block
if block, _ = pem.Decode(key); block == nil {
return nil, ErrKeyMustBePEMEncoded
}
// Parse the key
var parsedKey any
if parsedKey, err = elgamal.ParsePKCS8PublicKey(block.Bytes); err != nil {
return nil, err
}
var pkey *elgamal.PublicKey
var ok bool
if pkey, ok = parsedKey.(*elgamal.PublicKey); !ok {
return nil, ErrNotEIGamalPublicKey
}
return pkey, nil
}
// ============
// 解析 xml 私钥
func (this EIGamal) ParsePrivateKeyFromXML(key []byte) (*elgamal.PrivateKey, error) {
return elgamal.ParseXMLPrivateKey(key)
}
// 解析 xml 公钥
func (this EIGamal) ParsePublicKeyFromXML(key []byte) (*elgamal.PublicKey, error) {
return elgamal.ParseXMLPublicKey(key)
}