Format and remove 09.6.md spaces
This commit is contained in:
vCaesar
156
zh/09.6.md
156
zh/09.6.md
@@ -6,38 +6,38 @@
|
||||
|
||||
```Go
|
||||
|
||||
package main
|
||||
package main
|
||||
|
||||
import (
|
||||
"encoding/base64"
|
||||
"fmt"
|
||||
)
|
||||
import (
|
||||
"encoding/base64"
|
||||
"fmt"
|
||||
)
|
||||
|
||||
func base64Encode(src []byte) []byte {
|
||||
return []byte(base64.StdEncoding.EncodeToString(src))
|
||||
func base64Encode(src []byte) []byte {
|
||||
return []byte(base64.StdEncoding.EncodeToString(src))
|
||||
}
|
||||
|
||||
func base64Decode(src []byte) ([]byte, error) {
|
||||
return base64.StdEncoding.DecodeString(string(src))
|
||||
}
|
||||
|
||||
func main() {
|
||||
// encode
|
||||
hello := "你好，世界！ hello world"
|
||||
debyte := base64Encode([]byte(hello))
|
||||
fmt.Println(debyte)
|
||||
// decode
|
||||
enbyte, err := base64Decode(debyte)
|
||||
if err != nil {
|
||||
fmt.Println(err.Error())
|
||||
}
|
||||
|
||||
func base64Decode(src []byte) ([]byte, error) {
|
||||
return base64.StdEncoding.DecodeString(string(src))
|
||||
if hello != string(enbyte) {
|
||||
fmt.Println("hello is not equal to enbyte")
|
||||
}
|
||||
|
||||
func main() {
|
||||
// encode
|
||||
hello := "你好，世界！ hello world"
|
||||
debyte := base64Encode([]byte(hello))
|
||||
fmt.Println(debyte)
|
||||
// decode
|
||||
enbyte, err := base64Decode(debyte)
|
||||
if err != nil {
|
||||
fmt.Println(err.Error())
|
||||
}
|
||||
|
||||
if hello != string(enbyte) {
|
||||
fmt.Println("hello is not equal to enbyte")
|
||||
}
|
||||
|
||||
fmt.Println(string(enbyte))
|
||||
}
|
||||
fmt.Println(string(enbyte))
|
||||
}
|
||||
|
||||
```
|
||||
## 高级加解密
|
||||
@@ -50,70 +50,70 @@ Go语言的`crypto`里面支持对称加密的高级加解密包有：
|
||||
因为这两种算法使用方法类似，所以在此，我们仅用aes包为例来讲解它们的使用，请看下面的例子
|
||||
```Go
|
||||
|
||||
package main
|
||||
package main
|
||||
|
||||
import (
|
||||
"crypto/aes"
|
||||
"crypto/cipher"
|
||||
"fmt"
|
||||
"os"
|
||||
)
|
||||
import (
|
||||
"crypto/aes"
|
||||
"crypto/cipher"
|
||||
"fmt"
|
||||
"os"
|
||||
)
|
||||
|
||||
var commonIV = []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}
|
||||
var commonIV = []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}
|
||||
|
||||
func main() {
|
||||
//需要去加密的字符串
|
||||
plaintext := []byte("My name is Astaxie")
|
||||
//如果传入加密串的话，plaint就是传入的字符串
|
||||
if len(os.Args) > 1 {
|
||||
plaintext = []byte(os.Args[1])
|
||||
}
|
||||
|
||||
//aes的加密字符串
|
||||
key_text := "astaxie12798akljzmknm.ahkjkljl;k"
|
||||
if len(os.Args) > 2 {
|
||||
key_text = os.Args[2]
|
||||
}
|
||||
|
||||
fmt.Println(len(key_text))
|
||||
|
||||
// 创建加密算法aes
|
||||
c, err := aes.NewCipher([]byte(key_text))
|
||||
if err != nil {
|
||||
fmt.Printf("Error: NewCipher(%d bytes) = %s", len(key_text), err)
|
||||
os.Exit(-1)
|
||||
}
|
||||
|
||||
//加密字符串
|
||||
cfb := cipher.NewCFBEncrypter(c, commonIV)
|
||||
ciphertext := make([]byte, len(plaintext))
|
||||
cfb.XORKeyStream(ciphertext, plaintext)
|
||||
fmt.Printf("%s=>%x\n", plaintext, ciphertext)
|
||||
|
||||
// 解密字符串
|
||||
cfbdec := cipher.NewCFBDecrypter(c, commonIV)
|
||||
plaintextCopy := make([]byte, len(plaintext))
|
||||
cfbdec.XORKeyStream(plaintextCopy, ciphertext)
|
||||
fmt.Printf("%x=>%s\n", ciphertext, plaintextCopy)
|
||||
func main() {
|
||||
//需要去加密的字符串
|
||||
plaintext := []byte("My name is Astaxie")
|
||||
//如果传入加密串的话，plaint就是传入的字符串
|
||||
if len(os.Args) > 1 {
|
||||
plaintext = []byte(os.Args[1])
|
||||
}
|
||||
|
||||
//aes的加密字符串
|
||||
key_text := "astaxie12798akljzmknm.ahkjkljl;k"
|
||||
if len(os.Args) > 2 {
|
||||
key_text = os.Args[2]
|
||||
}
|
||||
|
||||
fmt.Println(len(key_text))
|
||||
|
||||
// 创建加密算法aes
|
||||
c, err := aes.NewCipher([]byte(key_text))
|
||||
if err != nil {
|
||||
fmt.Printf("Error: NewCipher(%d bytes) = %s", len(key_text), err)
|
||||
os.Exit(-1)
|
||||
}
|
||||
|
||||
//加密字符串
|
||||
cfb := cipher.NewCFBEncrypter(c, commonIV)
|
||||
ciphertext := make([]byte, len(plaintext))
|
||||
cfb.XORKeyStream(ciphertext, plaintext)
|
||||
fmt.Printf("%s=>%x\n", plaintext, ciphertext)
|
||||
|
||||
// 解密字符串
|
||||
cfbdec := cipher.NewCFBDecrypter(c, commonIV)
|
||||
plaintextCopy := make([]byte, len(plaintext))
|
||||
cfbdec.XORKeyStream(plaintextCopy, ciphertext)
|
||||
fmt.Printf("%x=>%s\n", ciphertext, plaintextCopy)
|
||||
}
|
||||
|
||||
```
|
||||
上面通过调用函数`aes.NewCipher`(参数key必须是16、24或者32位的[]byte，分别对应AES-128, AES-192或AES-256算法),返回了一个`cipher.Block`接口，这个接口实现了三个功能：
|
||||
|
||||
```Go
|
||||
|
||||
type Block interface {
|
||||
// BlockSize returns the cipher's block size.
|
||||
BlockSize() int
|
||||
type Block interface {
|
||||
// BlockSize returns the cipher's block size.
|
||||
BlockSize() int
|
||||
|
||||
// Encrypt encrypts the first block in src into dst.
|
||||
// Dst and src may point at the same memory.
|
||||
Encrypt(dst, src []byte)
|
||||
// Encrypt encrypts the first block in src into dst.
|
||||
// Dst and src may point at the same memory.
|
||||
Encrypt(dst, src []byte)
|
||||
|
||||
// Decrypt decrypts the first block in src into dst.
|
||||
// Dst and src may point at the same memory.
|
||||
Decrypt(dst, src []byte)
|
||||
}
|
||||
// Decrypt decrypts the first block in src into dst.
|
||||
// Dst and src may point at the same memory.
|
||||
Decrypt(dst, src []byte)
|
||||
}
|
||||
```
|
||||
这三个函数实现了加解密操作，详细的操作请看上面的例子。
|
||||
|
||||
|
||||
Reference in New Issue
Block a user