HarmonyOS HmacSHA256算法

请参考示例如下：

async function calculateHmacSHATest() {
  try {
    let macAlgName = "SHA256";
    let key = "02391723418924666645";
    let keyBytes = stringToUint8Array("abccba");
    let message = "aabbccddee112233ffgghh";
    let dataBytes = stringToUint8Array(message);
    let symKey = await cryptoFramework.createSymKeyGenerator("HMAC").convertKey({ data: keyBytes });
    let mac = cryptoFramework.createMac(macAlgName);
    await mac.init(symKey);
    await mac.update({ data: dataBytes });
    let macOutput = await mac.doFinal();
    let str = uint8ArrayToHexStr(macOutput.data)
    console.info("[ETS HMAC]: result bytes : " + macOutput.data);
    console.info("[ETS HMAC]: result string : " + str);
  } catch (err) {
    console.error(err)
  }
}

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

//Uint8Array转十六进制
export function uint8ArrayToHexStr(data: Uint8Array): string {
  return buffer.from(data).toString('hex');
}
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.