HarmonyOS 如何进行HmacSHA1加密？

Question

我们在使用接口时，需要将参数进行HmacSHA1加密传输过去，我使用cryptoFramework.createMac(“HmacSHA1”)创建mac加密算法失败了，还有什么方法可以进行HmacSHA1加密吗

Answer 1

尝试一下：https://developer.huawei.com/consumer/cn/forum/topic/0207152037054943457?fid=0109140870620153026

// 可理解的字符串转成字节流 
function stringToUint8Array(str: string) {
  let arr = new Uint8Array(str.length);
  for (let i = 0, j = str.length; i < j; ++i) {
    arr[i] = str.charCodeAt(i);
  }
  return arr;
}

async function getHmac(message: string) {
  try {
    let macAlgName = 'SHA1';
    let mac = cryptoFramework.createMac(macAlgName)
    let arr = stringToUint8Array('30a86dc9056c44cc05420fec269270214bbb6914954e871e83771c9810ac1db0')
    let KeyBlob: cryptoFramework.DataBlob = { data: arr };
    let symKeyGenerator = cryptoFramework.createSymKeyGenerator('HMAC');
    const symKey = await symKeyGenerator.convertKey(KeyBlob);
    await mac.init(symKey)
    await mac.update({ data: stringToUint8Array(message) });
    let macOutpt = await mac.doFinal();
    const res = buffer.from(macOutpt.data).toString('hex');
    console.log('Hmac—:' + res);
  } catch (err) {
    console.log('err:' + err)
  }
}