-
Notifications
You must be signed in to change notification settings - Fork 22
/
encrypt.go
164 lines (139 loc) · 3.35 KB
/
encrypt.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
// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
package utils
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"encoding/base64"
"encoding/json"
"errors"
"github.com/TeaOSLab/EdgeCommon/pkg/nodeconfigs"
teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
"github.com/TeaOSLab/EdgeNode/internal/events"
"github.com/iwind/TeaGo/logs"
"github.com/iwind/TeaGo/maps"
"github.com/iwind/TeaGo/rands"
stringutil "github.com/iwind/TeaGo/utils/string"
)
var (
simpleEncryptMagicKey = rands.HexString(32)
)
func init() {
if !teaconst.IsMain {
return
}
events.On(events.EventReload, func() {
nodeConfig, _ := nodeconfigs.SharedNodeConfig()
if nodeConfig != nil {
simpleEncryptMagicKey = stringutil.Md5(nodeConfig.NodeId + "@" + nodeConfig.Secret)
}
})
}
// SimpleEncrypt 加密特殊信息
func SimpleEncrypt(data []byte) []byte {
var method = &AES256CFBMethod{}
err := method.Init([]byte(simpleEncryptMagicKey), []byte(simpleEncryptMagicKey[:16]))
if err != nil {
logs.Println("[SimpleEncrypt]" + err.Error())
return data
}
dst, err := method.Encrypt(data)
if err != nil {
logs.Println("[SimpleEncrypt]" + err.Error())
return data
}
return dst
}
// SimpleDecrypt 解密特殊信息
func SimpleDecrypt(data []byte) []byte {
var method = &AES256CFBMethod{}
err := method.Init([]byte(simpleEncryptMagicKey), []byte(simpleEncryptMagicKey[:16]))
if err != nil {
logs.Println("[MagicKeyEncode]" + err.Error())
return data
}
src, err := method.Decrypt(data)
if err != nil {
logs.Println("[MagicKeyEncode]" + err.Error())
return data
}
return src
}
func SimpleEncryptMap(m maps.Map) (base64String string, err error) {
mJSON, err := json.Marshal(m)
if err != nil {
return "", err
}
data := SimpleEncrypt(mJSON)
return base64.StdEncoding.EncodeToString(data), nil
}
func SimpleDecryptMap(base64String string) (maps.Map, error) {
data, err := base64.StdEncoding.DecodeString(base64String)
if err != nil {
return nil, err
}
mJSON := SimpleDecrypt(data)
var result = maps.Map{}
err = json.Unmarshal(mJSON, &result)
if err != nil {
return nil, err
}
return result, nil
}
type AES256CFBMethod struct {
block cipher.Block
iv []byte
}
func (this *AES256CFBMethod) Init(key, iv []byte) error {
// 判断key是否为32长度
l := len(key)
if l > 32 {
key = key[:32]
} else if l < 32 {
key = append(key, bytes.Repeat([]byte{' '}, 32-l)...)
}
block, err := aes.NewCipher(key)
if err != nil {
return err
}
this.block = block
// 判断iv长度
l2 := len(iv)
if l2 > aes.BlockSize {
iv = iv[:aes.BlockSize]
} else if l2 < aes.BlockSize {
iv = append(iv, bytes.Repeat([]byte{' '}, aes.BlockSize-l2)...)
}
this.iv = iv
return nil
}
func (this *AES256CFBMethod) Encrypt(src []byte) (dst []byte, err error) {
if len(src) == 0 {
return
}
defer func() {
r := recover()
if r != nil {
err = errors.New("encrypt failed")
}
}()
dst = make([]byte, len(src))
encrypter := cipher.NewCFBEncrypter(this.block, this.iv)
encrypter.XORKeyStream(dst, src)
return
}
func (this *AES256CFBMethod) Decrypt(dst []byte) (src []byte, err error) {
if len(dst) == 0 {
return
}
defer func() {
r := recover()
if r != nil {
err = errors.New("decrypt failed")
}
}()
src = make([]byte, len(dst))
decrypter := cipher.NewCFBDecrypter(this.block, this.iv)
decrypter.XORKeyStream(src, dst)
return
}