/
crypto.go
187 lines (151 loc) · 3.93 KB
/
crypto.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
package crypto
import (
"crypto"
"crypto/md5"
"crypto/rsa"
"crypto/sha1"
"crypto/x509"
"encoding/base64"
"encoding/pem"
"fmt"
"io/ioutil"
"diceserver/pkg/errutil"
"golang.org/x/crypto/pkcs12"
)
func ParsePrivateKey(data []byte) (*rsa.PrivateKey, error) {
pemData, err := pemParse(data, "RSA PRIVATE KEY")
if err != nil {
return nil, err
}
return x509.ParsePKCS1PrivateKey(pemData)
}
func ParsePublicKey(data []byte) (*rsa.PublicKey, error) {
pemData, err := pemParse(data, "PUBLIC KEY")
if err != nil {
return nil, err
}
keyInterface, err := x509.ParsePKIXPublicKey(pemData)
if err != nil {
return nil, err
}
pubKey, ok := keyInterface.(*rsa.PublicKey)
if !ok {
return nil, fmt.Errorf("Could not cast parsed key to *rsa.PublickKey")
}
return pubKey, nil
}
func ParseCertSerialNo(data []byte) (string, error) {
if data == nil {
return "", errutil.ErrInvalidParameter
}
// Extract the PEM-encoded data block
pemData, err := pemParse(data, "CERTIFICATE")
if err != nil {
return "", err
}
// Decode the certificate
cert, err := x509.ParseCertificate(pemData)
if err != nil {
return "", fmt.Errorf("bad private key: %s", err)
}
return cert.SerialNumber.String(), nil
}
func LoadCertSerialNo(certPath string) (string, error) {
pemData, err := ioutil.ReadFile(certPath)
if err != nil {
return "", err
}
return ParseCertSerialNo(pemData)
}
func pemParse(data []byte, pemType string) ([]byte, error) {
block, _ := pem.Decode(data)
if block == nil {
return nil, fmt.Errorf("No PEM block found")
}
if pemType != "" && block.Type != pemType {
return nil, fmt.Errorf("Key's type is '%s', expected '%s'", block.Type, pemType)
}
return block.Bytes, nil
}
func LoadPublicKey(pubKeyPath string) (*rsa.PublicKey, error) {
certPEMBlock, err := ioutil.ReadFile(pubKeyPath)
if err != nil {
return nil, err
}
return ParsePublicKey(certPEMBlock)
}
func LoadPubKeyFromCert(certPath string) (*rsa.PublicKey, error) {
data, err := ioutil.ReadFile(certPath)
if err != nil {
return nil, err
}
// Extract the PEM-encoded data block
pemData, err := pemParse(data, "CERTIFICATE")
if err != nil {
return nil, err
}
// Decode the certificate
cert, err := x509.ParseCertificate(pemData)
if err != nil {
return nil, fmt.Errorf("bad certificate : %s", err)
}
return cert.PublicKey.(*rsa.PublicKey), nil
}
func LoadPrivateKey(privKeyPath string) (*rsa.PrivateKey, error) {
certPEMBlock, err := ioutil.ReadFile(privKeyPath)
if err != nil {
return nil, err
}
return ParsePrivateKey(certPEMBlock)
}
func LoadPrivKeyAndCert(pfxPath string, password string) (*rsa.PrivateKey, *x509.Certificate, error) {
pfxBlock, err := ioutil.ReadFile(pfxPath)
if err != nil {
return nil, nil, err
}
keyInterface, cert, err := pkcs12.Decode(pfxBlock, password)
if err != nil {
return nil, nil, err
}
return keyInterface.(*rsa.PrivateKey), cert, nil
}
func Sign(priKey *rsa.PrivateKey, data []byte) (string, error) {
bs, err := rsa.SignPKCS1v15(nil, priKey, crypto.SHA1, SHA1Digest(data))
if err != nil {
return "", errutil.ErrSignFailed
}
return base64.StdEncoding.EncodeToString(bs), nil
}
func Verify(pubKey *rsa.PublicKey, data []byte, sign string) error {
bs, err := base64.StdEncoding.DecodeString(sign)
if err != nil {
return errutil.ErrServerInternal
}
err = rsa.VerifyPKCS1v15(pubKey, crypto.SHA1, SHA1Digest(data), bs)
if err != nil {
return errutil.ErrVerifyFailed
}
return nil
}
func VerifyRSAWithMD5(pubKey *rsa.PublicKey, data []byte, sign string) error {
bs, err := base64.StdEncoding.DecodeString(sign)
if err != nil {
return errutil.ErrServerInternal
}
err = rsa.VerifyPKCS1v15(pubKey, crypto.MD5, MD5Digest(data), bs)
if err != nil {
return errutil.ErrVerifyFailed
}
return nil
}
//SHA1Digest generate a digest
func SHA1Digest(data []byte) []byte {
h := sha1.New()
h.Write(data)
return h.Sum(nil)
}
func MD5Digest(data []byte) []byte {
h := md5.New()
h.Write(data)
return h.Sum(nil)
}