golang使用aes库实现加解密操作
作者：robertkun
这篇文章主要介绍了golang使用aes库实现加解密操作，具有很好的参考价值，希望对大家有所帮助。一起跟随小编过来看看吧
golang实现加密解密的库很多，这里使用的是aes库+base64库来实现.
使用时，需要指定一个私钥，来进行加解密，这里指定是：
var aeskey = []byte(“321423u9y8d2fwfl”)
上代码：
package main
import (
"fmt"
"crypto/cipher"
"crypto/aes"
"bytes"
"encoding/base64"
)
func PKCS5Padding(ciphertext []byte, blockSize int) []byte {
padding := blockSize - len(ciphertext)%blockSize
padtext := bytes.Repeat([]byte{byte(padding)}, padding)
return append(ciphertext, padtext...)
}
func PKCS5UnPadding(origData []byte) []byte {
length := len(origData)
unpadding := int(origData[length-1])
return origData[:(length - unpadding)]
}
func AesEncrypt(origData, key []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
blockSize := block.BlockSize()
origData = PKCS5Padding(origData, blockSize)
blockMode := cipher.NewCBCEncrypter(block, key[:blockSize])
crypted := make([]byte, len(origData))
blockMode.CryptBlocks(crypted, origData)
return crypted, nil
}
func AesDecrypt(crypted, key []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
blockSize := block.BlockSize()
blockMode := cipher.NewCBCDecrypter(block, key[:blockSize])
origData := make([]byte, len(crypted))
blockMode.CryptBlocks(origData, crypted)
origData = PKCS5UnPadding(origData)
return origData, nil
}
func main() {
var aeskey = []byte("321423u9y8d2fwfl")
pass := []byte("vdncloud123456")
xpass, err := AesEncrypt(pass, aeskey)
if err != nil {
fmt.Println(err)
return
}
pass64 := base64.StdEncoding.EncodeToString(xpass)
fmt.Printf("加密后:%v\n",pass64)
bytesPass, err := base64.StdEncoding.DecodeString(pass64)
if err != nil {
fmt.Println(err)
return
}
tpass, err := AesDecrypt(bytesPass, aeskey)
if err != nil {
fmt.Println(err)
return
}
fmt.Printf("解密后:%s\n", tpass)
}
输出：
加密后：rLyZug0MCEF2TBcJdhMyjg==
解密后：vdncloud123456
补充：Golang AES CBC 加密
我就废话不多说了，大家还是直接看代码吧~
package main
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"encoding/base64"
"fmt"
)
const (
key = "2018201820182018"
iv = "1234567887654321"
)
func main() {
str := "我勒个去"
es, _ := AesEncrypt(str, []byte(key))
fmt.Println(es)
ds, _ := AesDecrypt(es, []byte(key))
fmt.Println(string(ds))
}
func AesEncrypt(encodeStr string, key []byte) (string, error) {
encodeBytes := []byte(encodeStr)
//根据key 生成密文
block, err := aes.NewCipher(key)
if err != nil {
return "", err
}
blockSize := block.BlockSize()
encodeBytes = PKCS5Padding(encodeBytes, blockSize)
blockMode := cipher.NewCBCEncrypter(block, []byte(iv))
crypted := make([]byte, len(encodeBytes))
blockMode.CryptBlocks(crypted, encodeBytes)
return base64.StdEncoding.EncodeToString(crypted), nil
}
func PKCS5Padding(ciphertext []byte, blockSize int) []byte {
padding := blockSize - len(ciphertext)%blockSize
//填充
padtext := bytes.Repeat([]byte{byte(padding)}, padding)
return append(ciphertext, padtext...)
}
func AesDecrypt(decodeStr string, key []byte) ([]byte, error) {
//先解密base64
decodeBytes, err := base64.StdEncoding.DecodeString(decodeStr)
if err != nil {
return nil, err
}
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
blockMode := cipher.NewCBCDecrypter(block, []byte(iv))
origData := make([]byte, len(decodeBytes))
blockMode.CryptBlocks(origData, decodeBytes)
origData = PKCS5UnPadding(origData)
return origData, nil
}
func PKCS5UnPadding(origData []byte) []byte {
length := len(origData)
unpadding := int(origData[length-1])
return origData[:(length - unpadding)]
}
以上为个人经验，希望能给大家一个参考，也希望大家多多支持脚本之家。如有错误或未考虑完全的地方，望不吝赐教。