AES decrypt encrypt with CryptoJs & Golang

CryptoJs & Golang

<template>
  <div>
  </div>
</template>

<script>
  import CryptoJs from "crypto-js"
  export default {
    name: "",
    data(){
      return {}
    },
    mounted(){
      let str = "exampleplaintext";
      let key = "example key 1234";
      let r = this.encrypt(str, key);
      console.log(r); //dpepq82KQTeL+9qqcNJ5DMCFXlQH3Zc2Kh49+Ro1gHY=

      console.log(this.decrypt(r, key)) //exampleplaintext
    },
    methods: {
      encrypt(str, key){
        key = CryptoJs.enc.Utf8.parse(key);
        let iv = CryptoJs.enc.Utf8.parse("1234567812345678");
        let encrypted = CryptoJs.AES.encrypt(str, key, {
          iv: iv,
          padding: CryptoJs.pad.Pkcs7
        });
        return encrypted.toString();
      },
      decrypt(str, key) {
        key = CryptoJs.enc.Utf8.parse(key);
        let iv = CryptoJs.enc.Utf8.parse("1234567812345678");
        let encrypted = CryptoJs.AES.decrypt(str.toString(), key, {
          iv: iv,
          padding: CryptoJs.pad.Pkcs7
        });
        return encrypted.toString(CryptoJs.enc.Utf8);
      }
    }
  }
</script>

Golang.go

package main

import (
	"bytes"
	"crypto/aes"
	"crypto/cipher"
	"encoding/base64"
	"fmt"
)

func main() {
	key := []byte("example key 1234")

	result, err := AesEncrypt([]byte("Hello World!"), key)
	if err != nil {
		panic(err)
	}
	fmt.Println(base64.StdEncoding.EncodeToString(result)) //VRMzYJwT5xx0bvqud3Np+g==

	r, _ := base64.StdEncoding.DecodeString("dpepq82KQTeL+9qqcNJ5DMCFXlQH3Zc2Kh49+Ro1gHY=") // use CryptoJs encrypted
	//r := result  // decrypt go encrypted
	origData, err := AesDecrypt(r, key)
	if err != nil {
		panic(err)
	}
	fmt.Println(string(origData)) // exampleplaintext
}

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)
	iv := []byte("1234567812345678")
	blockMode := cipher.NewCBCEncrypter(block, iv)
	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
	}
	iv := []byte("1234567812345678")
	blockMode := cipher.NewCBCDecrypter(block, iv)
	origData := make([]byte, len(crypted))
	blockMode.CryptBlocks(origData, crypted)
	origData = PKCS5UnPadding(origData)
	return origData, nil
}

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)]
}