[Golang] RC4加解密

package utils

import (
  "crypto/rc4"
  "encoding/base64"
)

// 加密
func EncryptionRc4(k, query string) string {
  key := []byte(k)
  plaintext := []byte(query)
  // encryption
  ciphertext := make([]byte, len(plaintext))
  cipher1, _ := rc4.NewCipher(key)
  cipher1.XORKeyStream(ciphertext, plaintext)
  return base64.StdEncoding.EncodeToString(ciphertext)
}

// 解密
func DecryptionRc4(k, query string) string {
  param, err := base64.StdEncoding.DecodeString(query)
  if err != nil {
    return ""
  }
  key := []byte(k)
  ciphertext := param
  plaintextDec := make([]byte, len(ciphertext))
  cipher2, _ := rc4.NewCipher(key)
  cipher2.XORKeyStream(plaintextDec, ciphertext)
  return string(plaintextDec)
}

func TestRc4(t *testing.T) {
  // 密钥 & 待加密字符串
  rc4 := utils.EncryptionRc4("javaPub_api_key", "我要被加密啦，好害怕！！！")
  fmt.Println("这是加密后的👇：")
  fmt.Println(rc4)
  decryptionRc4 := utils.DecryptionRc4("javaPub_api_key", rc4)
  fmt.Println("这是解密后的👇：")
  fmt.Println(decryptionRc4)
}