HarmonyOS AES ECB加密后后台解析失败

可以使用三方库crypto-js实现AES的加解密，三方库地址：https://gitee.com/openharmony-sig/crypto-js

示例代码：

import CryptoJS from '@ohos/crypto-js'

@Entry
@Component
struct CryptoAESPage {
  encryptDes() {
    let keyHex = CryptoJS.enc.Utf8.parse('559f5f6c5e5f22a4')
    let encrypted = CryptoJS.AES.encrypt('我是原文', keyHex, {
      mode: CryptoJS.mode.ECB,
      padding: CryptoJS.pad.Pkcs7
    })
    let enMsg = encrypted.ciphertext.toString(CryptoJS.enc.Hex)
    console.info('------>加密：' + enMsg)
  }

  decryptDes() {
    let keyHex = CryptoJS.enc.Utf8.parse('559f5f6c5e5f22a4')
    let enMsg = '17cea7b20cda1f320f4298b82969ca68'
    let words = CryptoJS.enc.Hex.parse(enMsg)
    let base64Str = CryptoJS.enc.Base64.stringify(words)
    let decrypted= CryptoJS.AES.decrypt(base64Str, keyHex, {
      mode: CryptoJS.mode.ECB,
      padding: CryptoJS.pad.Pkcs7
    })
    let deMsg = decrypted.toString(CryptoJS.enc.Utf8)
    console.info('------>解密：' + deMsg)
  }

  build() {
    Column() {
      Text('AES加密').textAlign(TextAlign.Center)
        .width(200).height(100)
        .onClick(() => {
          this.encryptDes()
        })
      Text('AES解密')
        .textAlign(TextAlign.Center)
        .width(200)
        .height(100)
        .margin({ top: 30 })
        .onClick(() => {
          this.decryptDes()
        })
    }.width('100%').height('100%').justifyContent(FlexAlign.Center)
  }
}
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