HarmonyOS @ohos/node-polyfill crypto加密报错

新建Test.js文件内容如下：

import { buffer } from '@ohos/node-polyfill';

export function getDCSecurityKey() {
  return de('\u0033\u0062\u0033\u0037\u0033\u0039\u0033\u0036\u0033\u0039\u0033\u0063\u0033\u0061\u0033\u0065\u0033\u0062\u0033\u0062\u0033\u0039\u0033\u0062\u0033\u0063\u0033\u0038\u0033\u0063\u0036\u0061\u0033\u0039\u0033\u0061\u0033\u0063\u0036\u0063\u0033\u0064\u0033\u0064\u0033\u0061\u0033\u0037\u0033\u0063\u0033\u0062\u0033\u0061\u0033\u0061\u0033\u0063\u0033\u0039\u0033\u0061\u0033\u0065')
    .toString()
}

export function getDBSecurityKey() {
  return buffer.Buffer.from(getDCSecurityKey())
}

export function de(str) {
  return buffer.Buffer.from(buffer.Buffer.from(str, 'hex')
    .toString()
    .split('')
    .map(val => {
      return val.charCodeAt(0)
    })
    .map(val => {
      return String.fromCharCode(val - 6)
    })
    .join(''), 'hex')
}
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然后编写在HarmonyOS代码中引用js文件中的方法：

import { buffer, crypto } from '@ohos/node-polyfill';
import { getDBSecurityKey } from './test';

@Entry
@Component
struct Index {
  @State message: string = 'Hello World';

  simpleChiper(data: ESObject, key: string, algorithm = 'aes-128-cbc'): ESObject {
    let chunk: ESObject = buffer.Buffer.alloc(0)
    let cip: ESObject = crypto.createCipheriv(algorithm, key, buffer.Buffer.alloc(16, 0x00));
    cip.setAutoPadding(false)
    data = buffer.Buffer.concat([buffer.Buffer.from(data),
    buffer.Buffer.alloc(16 - buffer.Buffer.from(data).length % 16, 0x00)])
    console.log(data)
    const updateData: ESObject = cip.update(data, 'binary')
    console.log(updateData)
    chunk = buffer.Buffer.concat([chunk, cip.update(data, 'binary')])
       chunk = buffer.Buffer.concat([chunk, cip.final()])
       return chunk
  }

  build() {
    Column() {
      Button('点击').onClick(() => {
        let res = this.simpleChiper('1223', getDBSecurityKey()) as string
        AlertDialog.show({ message: `执行结果为：${res}` })
      })
    }
    .width("100%")
    .height("100%")
    .justifyContent(FlexAlign.Center)
  }
}
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