HarmonyOS AES128|GCM 无法解密后台返回的加密数据

/*
* AES128|GCM|PKCS7 解密
*
* */
export async function aesGcmDecrypt(text: string, key: string): Promise<string> {
  let globalResult = ""
  try {
    //数据处理
    let data = base.decodeSync(text)
    /*取出IV*/
    let ivData = data.subarray(0, 16);
    //取出authTag
    let authTagData = data.subarray(data.length - 16, data.length)
    //纯密文
    data = data.subarray(ivData.length, data.length - authTagData.length)
    let cipherAlgName = 'AES128|GCM|NoPadding';
    let symAlgName = 'AES128';
    let globalCipher = cryptoFramework.createCipher(cipherAlgName);
    let symKeyGenerator = cryptoFramework.createSymKeyGenerator(symAlgName);
    let dataUint8Array = stringToUint8Array(key)
    // let dataUint8Array = HexStrTouint8Array("603deb1015ca71be2b73aef0857d77811f352c073b6108e774a561040a7662de")
    let keyBlob: cryptoFramework.DataBlob = { data: dataUint8Array }
    let promiseSymKey = await symKeyGenerator.convertKey(keyBlob)

    let gcmParamsSpec = genGcmParamsSpec()
    gcmParamsSpec.iv = { data: ivData }
    gcmParamsSpec.authTag = { data: authTagData }

    await globalCipher.init(cryptoFramework.CryptoMode.DECRYPT_MODE, promiseSymKey, gcmParamsSpec);

    let result = await globalCipher.doFinal({ data: data })

    globalResult = uint8ArrayToString(result.data);
    console.log("解密后的明文==》" + globalResult)
  } catch (err) {
    console.log(err.message)
  }
  return globalResult;
}

export const base = new util.Base64Helper();

// 字符串转成字节流
export function stringToUint8Array(str: string) {
  return new Uint8Array(buffer.from(str, 'utf-8').buffer);
}

// 字节流转成可理解的字符串
export function uint8ArrayToString(array: Uint8Array) {
  // 将UTF-8编码转换成Unicode编码
  let out: string = "";
  let index: number = 0;
  let len: number = array.length;
  while (index < len) {
    let character = array[index++];
    switch (character >> 4) {
      case 0:
      case 1:
      case 2:
      case 3:
      case 4:
      case 5:
      case 6:
      case 7:
        out += String.fromCharCode(character);
        break;
      case 12:
      case 13:
        out += String.fromCharCode(((character & 0x1F) << 6) | (array[index++] & 0x3F));
        break;
      case 14:
        out += String.fromCharCode(((character & 0x0F) << 12) | ((array[index++] & 0x3F) << 6) |
          ((array[index++] & 0x3F) << 0));
        break;
      default:
        break;
    }
  }
  return out;
}

function genGcmParamsSpec() {
  //GCM参数配置
  let gcmParamsSpec: cryptoFramework.GcmParamsSpec = {
    iv: { data: new Uint8Array(16) },
    aad: { data: new Uint8Array(0) },
    authTag: { data: new Uint8Array(16) },
    algName: "GcmParamsSpec"
  };
  return gcmParamsSpec;
}

1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
62.
63.
64.
65.
66.
67.
68.
69.
70.
71.
72.
73.
74.
75.
76.
77.
78.
79.
80.
81.
82.
83.
84.
85.
86.
87.
88.
89.
90.
91.