MD5算法示例？

Question

如题：MD5算法示例？

Answer 1

function stringToUint8Array(str: string) {
  return new Uint8Array(buffer.from(str,'utf-8').buffer);
}

function uint8ArrayToString(array:Uint8Array) {
  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;
}

async function doMd5() {

  let TAG='Test-';

  let mdAlgName = 'MD5';

  // let message = “ahdjashdjahduqwyieqwijkdals45451234545155aadasdadawdsa”;

  let md = cryptoFramework.createMd(mdAlgName);

  console.info('mdAlgName:' + md.algName);

  let promiseMdUpdate = md.update({ data: stringToUint8Array(bodyStr) });

  promiseMdUpdate.then(() => {

    let PromiseMdDigest = md.digest();

    //console.log(“MD5:”+PromiseMdDigest);

    return PromiseMdDigest;

  }).then(digestOutput => {

    let mdOutput = digestOutput;

    console.info(TAG+'Result:' + mdOutput.data);

    //转成16进制

    let buf=buffer.from(mdOutput.data);

    console.log(TAG+'Hex222：'+buf.toString('hex'));

    let mdLen = md.getMdLength();

    console.info(TAG+"MDlength: " + mdLen);

    //转成base64

    let base64=new util.Base64Helper;

    let resBase64=base64.encodeToStringSync(mdOutput.data)

    console.log(TAG+'base64:'+resBase64)

  }).catch((error: BusinessError) => {

    console.error('error:' + error.message);

  });

}