Format and remove 09.6.md spaces
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34
zh/09.6.md
34
zh/09.6.md
@@ -6,22 +6,22 @@
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```Go
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package main
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package main
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import (
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import (
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"encoding/base64"
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"fmt"
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)
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)
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func base64Encode(src []byte) []byte {
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func base64Encode(src []byte) []byte {
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return []byte(base64.StdEncoding.EncodeToString(src))
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}
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}
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func base64Decode(src []byte) ([]byte, error) {
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func base64Decode(src []byte) ([]byte, error) {
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return base64.StdEncoding.DecodeString(string(src))
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}
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}
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func main() {
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func main() {
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// encode
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hello := "你好,世界! hello world"
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debyte := base64Encode([]byte(hello))
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@@ -37,7 +37,7 @@
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}
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fmt.Println(string(enbyte))
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}
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}
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```
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## 高级加解密
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@@ -50,18 +50,18 @@ Go语言的`crypto`里面支持对称加密的高级加解密包有:
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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
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```Go
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package main
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package main
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import (
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import (
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"crypto/aes"
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"crypto/cipher"
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"fmt"
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"os"
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)
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)
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var commonIV = []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}
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var commonIV = []byte{0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f}
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func main() {
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func main() {
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//需要去加密的字符串
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plaintext := []byte("My name is Astaxie")
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//如果传入加密串的话,plaint就是传入的字符串
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@@ -95,14 +95,14 @@ Go语言的`crypto`里面支持对称加密的高级加解密包有:
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plaintextCopy := make([]byte, len(plaintext))
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cfbdec.XORKeyStream(plaintextCopy, ciphertext)
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fmt.Printf("%x=>%s\n", ciphertext, plaintextCopy)
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}
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}
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```
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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:
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```Go
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type Block interface {
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type Block interface {
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// BlockSize returns the cipher's block size.
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BlockSize() int
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@@ -113,7 +113,7 @@ Go语言的`crypto`里面支持对称加密的高级加解密包有:
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// Decrypt decrypts the first block in src into dst.
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// Dst and src may point at the same memory.
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Decrypt(dst, src []byte)
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}
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}
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```
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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。
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