HarmonyOS Developer 加解密算法库框架开发指导

import cryptoFramework from '@ohos.security.cryptoFramework';

function generateAsyKey() {
  // 创建非对称密钥生成器
  let rsaGenerator = cryptoFramework.createAsyKeyGenerator("RSA1024|PRIMES_2");
  // 通过非对称密钥生成器，随机生成非对称密钥
  let keyGenPromise = rsaGenerator.generateKeyPair();
  keyGenPromise.then( keyPair => {
    globalKeyPair = keyPair;
    let pubKey = globalKeyPair.pubKey;
    let priKey = globalKeyPair.priKey;
    // 获取非对称密钥的二进制数据
    pkBlob = pubKey.getEncoded();
    skBlob = priKey.getEncoded();
    AlertDialog.show({ message : "pk bin data" + pkBlob.data} );
    AlertDialog.show({ message : "sk bin data" + skBlob.data} );
  })
}

import cryptoFramework from '@ohos.security.cryptoFramework';

// 字节流以16进制输出
function uint8ArrayToShowStr(uint8Array) {
  return Array.prototype.map
    .call(uint8Array, (x) => ('00' + x.toString(16)).slice(-2))
    .join('');
}

function testGenerateAesKey() {
  // 创建对称密钥生成器
  let symKeyGenerator = cryptoFramework.createSymKeyGenerator('AES256');
  // 通过密钥生成器随机生成对称密钥
  let promiseSymKey = symKeyGenerator.generateSymKey();
  promiseSymKey.then( key => {
    // 获取对称密钥的二进制数据，输出长度为256bit的字节流
    let encodedKey = key.getEncoded();
    console.info('key hex:' + uint8ArrayToShowStr(encodedKey.data));
  })
}

import cryptoFramework from '@ohos.security.cryptoFramework';

function convertAsyKey() {
  let rsaGenerator = cryptoFramework.createAsyKeyGenerator("RSA1024");
  let pkval = new Uint8Array([48,129,159,48,13,6,9,42,134,72,134,247,13,1,1,1,5,0,3,129,141,0,48,129,137,2,129,129,0,174,203,113,83,113,3,143,213,194,79,91,9,51,142,87,45,97,65,136,24,166,35,5,179,42,47,212,79,111,74,134,120,73,67,21,19,235,80,46,152,209,133,232,87,192,140,18,206,27,106,106,169,106,46,135,111,118,32,129,27,89,255,183,116,247,38,12,7,238,77,151,167,6,102,153,126,66,28,253,253,216,64,20,138,117,72,15,216,178,37,208,179,63,204,39,94,244,170,48,190,21,11,73,169,156,104,193,3,17,100,28,60,50,92,235,218,57,73,119,19,101,164,192,161,197,106,105,73,2,3,1,0,1]);
  let pkBlob = {data : pkval};
  rsaGenerator.convertKey(pkBlob, null, function(err, keyPair) {
    if (keyPair == null) {
      AlertDialog.show({message : "Convert keypair fail"});
    }
    AlertDialog.show({message : "Convert KeyPair success"});
  })
}

function convertEccAsyKey() {
    let pubKeyArray = new Uint8Array([4,196,55,233,100,227,224,38,38,5,128,81,53,112,129,7,59,189,116,105,182,87,190,85,31,248,172,116,213,7,206,85,190,65,169,193,138,173,232,187,74,54,78,251,29,131,192,223,251,227,170,138,80,7,98,193,216,168,235,114,255,188,70,134,104]);
    let priKeyArray = new Uint8Array([255,70,89,220,189,19,41,157,175,173,83,60,74,216,195,96,24,181,231,23,112,247,150,126,15,155,24,79,33,97,31,225]);
    let pubKeyBlob = { data: pubKeyArray };
    let priKeyBlob = { data: priKeyArray };
    let generator = cryptoFrameWork.createAsyKeyGenerator("ECC256");
    generator.convertKey(pubKeyBlob, priKeyBlob, (error, data) => {
        if (error) {
            AlertDialog.show({message : "Convert keypair fail"});
        }
        AlertDialog.show({message : "Convert KeyPair success"});
    })
}

import cryptoFramework from '@ohos.security.cryptoFramework';

// 字节流以16进制输出
function uint8ArrayToShowStr(uint8Array) {
  return Array.prototype.map
    .call(uint8Array, (x) => ('00' + x.toString(16)).slice(-2))
    .join('');
}

function genKeyMaterialBlob() {
  let arr = [
    0xba, 0x3d, 0xc2, 0x71, 0x21, 0x1e, 0x30, 0x56,
    0xad, 0x47, 0xfc, 0x5a, 0x46, 0x39, 0xee, 0x7c,
    0xba, 0x3b, 0xc2, 0x71, 0xab, 0xa0, 0x30, 0x72];    // keyLen = 192 (24 bytes)
  let keyMaterial = new Uint8Array(arr);
  return {data : keyMaterial};
}

function testConvertAesKey() {
  // 生成对称密钥生成器
  let symKeyGenerator = cryptoFramework.createSymKeyGenerator('3DES192');
  // 根据用户指定的数据，生成对称密钥
  let keyMaterialBlob = genKeyMaterialBlob();
  try {
    symKeyGenerator.convertKey(keyMaterialBlob, (error, key) => {
      if (error) {    // 业务逻辑执行错误通过callback的第一个参数返回错误信息
        console.error(`convertKey error, ${error.code}, ${error.message}`);
        return;
      }
      console.info(`key algName: ${key.algName}`);
      console.info(`key format: ${key.format}`);
      let encodedKey = key.getEncoded();    // 获取对称密钥的二进制数据，输出长度为192bit的字节流
      console.info('key getEncoded hex: ' + uint8ArrayToShowStr(encodedKey.data));
    })
  } catch (error) {    // 参数检查的错误以同步的方式立即抛出异常
    console.error(`convertKey failed, ${error.code}, ${error.message}`);
    return;
  }
}

import cryptoFramework from '@ohos.security.cryptoFramework';

var globalCipher;
var globalGcmParams;
var globalKey;
var globalCipherText;

function genGcmParamsSpec() {
  let arr = [0, 0, 0, 0 , 0, 0, 0, 0, 0, 0 , 0, 0]; // 12 bytes
  let dataIv = new Uint8Array(arr);
  let ivBlob = {data : dataIv};

  arr = [0, 0, 0, 0 , 0, 0, 0, 0]; // 8 bytes
  let dataAad = new Uint8Array(arr);
  let aadBlob = {data : dataAad};

  arr = [0, 0, 0, 0 , 0, 0, 0, 0, 0, 0, 0, 0 , 0, 0, 0, 0]; // 16 bytes
  let dataTag = new Uint8Array(arr);
  let tagBlob = {data : dataTag};
  let gcmParamsSpec = {iv : ivBlob, aad : aadBlob, authTag : tagBlob, algoName : "GcmParamsSpec"};
  return gcmParamsSpec;
}

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

// 字节流以16进制输出
function uint8ArrayToShowStr(uint8Array) {
  return Array.prototype.map
    .call(uint8Array, (x) => ('00' + x.toString(16)).slice(-2))
    .join('');
}

// 字节流转成可理解的字符串
function uint8ArrayToString(array) {
  let arrayString = '';
  for (let i = 0; i < array.length; i++) {
    arrayString += String.fromCharCode(array[i]);
  }
  return arrayString;
}

function genKeyMaterialBlob() {
  let arr = [
    0xba, 0x3d, 0xc2, 0x71, 0x21, 0x1e, 0x30, 0x56,
    0xad, 0x47, 0xfc, 0x5a, 0x46, 0x39, 0xee, 0x7c,
    0xba, 0x3b, 0xc2, 0x71, 0xab, 0xa0, 0x30, 0x72];    // keyLen = 192 (24 bytes)
  let keyMaterial = new Uint8Array(arr);
  return {data : keyMaterial};
}


// AES GCM模式示例，自动生成密钥（promise写法）
function testAesGcm() {
  return new Promise((resolve, reject) => {
    setTimeout(() => {
      resolve('testAesGcm');
    }, 10)
  }).then(() => {
    // 生成对称密钥生成器
    let symAlgoName = 'AES128';
    let symKeyGenerator = cryptoFramework.createSymKeyGenerator(symAlgoName);
    if (symKeyGenerator == null) {
      console.error('createSymKeyGenerator failed');
      return;
    }
    console.info(`symKeyGenerator algName: ${symKeyGenerator.algName}`);
    // 通过密钥生成器随机生成128位长度的对称密钥
    let promiseSymKey = symKeyGenerator.generateSymKey();
    // 构造参数
    globalGcmParams = genGcmParamsSpec();

    // 生成加解密生成器
    let cipherAlgoName = 'AES128|GCM|PKCS7';
    try {
      globalCipher = cryptoFramework.createCipher(cipherAlgoName);
      console.info(`cipher algName: ${globalCipher.algName}`);
    } catch (error) {
      console.error(`createCipher failed, ${error.code}, ${error.message}`);
      return;
    }
    return promiseSymKey;
  }).then(key => {
      let encodedKey = key.getEncoded();
      console.info('key hex:' + uint8ArrayToShowStr(encodedKey.data));
      globalKey = key;
      return key;
  }).then(key => {
      // 初始化加解密操作环境:开始加密
      let mode = cryptoFramework.CryptoMode.ENCRYPT_MODE;
      let promiseInit = globalCipher.init(mode, key, globalGcmParams);    // init
      return promiseInit;
  }).then(() => {
      let plainText = {data : stringToUint8Array('this is test!')};
      let promiseUpdate = globalCipher.update(plainText);   // update
      return promiseUpdate;
  }).then(updateOutput => {
      globalCipherText = updateOutput;
      let promiseFinal = globalCipher.doFinal(null);    // doFinal
      return promiseFinal;
  }).then(authTag => {
      // 获取加密后的认证信息
      globalGcmParams.authTag = authTag;
      return;
  }).then(() => {
      // 初始化加解密操作环境:开始解密
      let mode = cryptoFramework.CryptoMode.DECRYPT_MODE;
      let promiseInit = globalCipher.init(mode, globalKey, globalGcmParams);    // init
      return promiseInit;
  }).then(() => {
      let promiseUpdate = globalCipher.update(globalCipherText);    // update
      return promiseUpdate;
  }).then(updateOutput => {
      console.info('decrypt plainText: ' + uint8ArrayToString(updateOutput.data));
      let promiseFinal = globalCipher.doFinal(null);    // doFinal
      return promiseFinal;
  }).then(finalOutput => {
      if (finalOutput == null) {
          console.info('GCM finalOutput is null');
      }
  }).catch(error => {
      console.error(`catch error, ${error.code}, ${error.message}`);
  })
}

import cryptoFramework from '@ohos.security.cryptoFramework';

var globalCipher;
var globalGcmParams;
var globalKey;
var globalCipherText;

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

// 字节流以16进制输出
function uint8ArrayToShowStr(uint8Array) {
  return Array.prototype.map
    .call(uint8Array, (x) => ('00' + x.toString(16)).slice(-2))
    .join('');
}

// 字节流转成可理解的字符串
function uint8ArrayToString(array) {
  let arrayString = '';
  for (let i = 0; i < array.length; i++) {
    arrayString += String.fromCharCode(array[i]);
  }
  return arrayString;
}

function genKeyMaterialBlob() {
  let arr = [
    0xba, 0x3d, 0xc2, 0x71, 0x21, 0x1e, 0x30, 0x56,
    0xad, 0x47, 0xfc, 0x5a, 0x46, 0x39, 0xee, 0x7c,
    0xba, 0x3b, 0xc2, 0x71, 0xab, 0xa0, 0x30, 0x72];    // keyLen = 192 (24 bytes)
  let keyMaterial = new Uint8Array(arr);
  return {data : keyMaterial};
}

// 3DES ECB模式示例，采用已有数据生成密钥（callback写法）
function test3DesEcb() {
  // 生成对称密钥生成器
  let symAlgoName = '3DES192';
  let symKeyGenerator = cryptoFramework.createSymKeyGenerator(symAlgoName);
  if (symKeyGenerator == null) {
    console.error('createSymKeyGenerator failed');
    return;
  }
  console.info(`symKeyGenerator algName: ${symKeyGenerator.algName}`);

  // 生成加解密生成器
  let cipherAlgoName = '3DES192|ECB|PKCS7';
  try {
    globalCipher = cryptoFramework.createCipher(cipherAlgoName);
    console.info(`cipher algName: ${globalCipher.algName}`);
  } catch (error) {
    console.error(`createCipher failed, ${error.code}, ${error.message}`);
    return;
  }

  // 根据指定的数据，生成对称密钥
  let keyMaterialBlob = genKeyMaterialBlob();
  try {
    symKeyGenerator.convertKey(keyMaterialBlob, (error, key) => {
      if (error) {
        console.error(`convertKey error, ${error.code}, ${error.message}`);
        return;
      }
      console.info(`key algName: ${key.algName}`);
      console.info(`key format: ${key.format}`);
      let encodedKey = key.getEncoded();
      console.info('key getEncoded hex: ' + uint8ArrayToShowStr(encodedKey.data));
      globalKey = key;

      // 初始化加解密操作环境:开始加密
      let mode = cryptoFramework.CryptoMode.ENCRYPT_MODE;
      // init
      globalCipher.init(mode, key, null, (err, ) => {
        let plainText = {data : stringToUint8Array('this is test!')};
        // update
        globalCipher.update(plainText, (err, updateOutput) => {
          globalCipherText = updateOutput;
          //doFinal
          globalCipher.doFinal(null, (err, finalOutput) => {
            if (error) {
              console.error(`doFinal error, ${error.code}, ${error.message}`);
              return;
            }
            if (finalOutput != null) {
              globalCipherText = Array.from(globalCipherText.data);
              finalOutput = Array.from(finalOutput.data);
              globalCipherText = globalCipherText.concat(finalOutput);
              globalCipherText = new Uint8Array(globalCipherText);
              globalCipherText = {data : globalCipherText};
            }
            // 初始化加解密操作环境:开始解密
            let mode = cryptoFramework.CryptoMode.DECRYPT_MODE;
            // init
            globalCipher.init(mode, globalKey, null, (err, ) => {
              // update
              globalCipher.update(globalCipherText, (err, updateOutput) => {
                console.info('decrypt plainText: ' + uint8ArrayToString(updateOutput.data));
                // doFinal
                globalCipher.doFinal(null, (error, finalOutput) => {
                  if (finalOutput != null) {
                    console.info("decrypt plainText:" + uint8ArrayToString(finalOutput.data));
                  }
                })
              })
            })
          })
        })
      })
    })
  } catch (error) {
    console.error(`convertKey failed, ${error.code}, ${error.message}`);
    return;
  }
}

import cryptoFramework from "@ohos.security.cryptoFramework"

let plan = "This is cipher test.";

function stringToUint8Array(str) {
  var arr = [];
  for (var i = 0, j = str.length; i < j; ++i) {
    arr.push(str.charCodeAt(i));
  }
  var tmpArray = new Uint8Array(arr);
  return tmpArray;
}

function encryptMessageProMise() {
  let rsaGenerator = cryptoFramework.createAsyKeyGenerator("RSA1024|PRIMES_2");
  let cipher = cryptoFramework.createCipher("RSA1024|PKCS1");
  let keyGenPromise = rsaGenerator.generateKeyPair();
  keyGenPromise.then(rsaKeyPair => {
    let pubKey = rsaKeyPair.pubKey;
    return cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, pubKey, null);
  }).then(() => {
    let input = { data : stringToUint8Array(plan) };
    return cipher.doFinal(input);
  }).then(dataBlob => {
    console.info("EncryptOutPut is " + dataBlob.data);
  });
}

function encryptMessageCallback() {
  let rsaGenerator = cryptoFramework.createAsyKeyGenerator("RSA1024|PRIMES_2");
  let cipher = cryptoFramework.createCipher("RSA1024|PKCS1");
  rsaGenerator.generateKeyPair(function (err, keyPair) {
    let pubKey = keyPair.pubKey;
    cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, pubKey, null, function (err, data) {
      let input = {data : stringToUint8Array(plan) };
      cipher.doFinal(input, function (err, data) {
        console.info("EncryptOutPut is " + data.data);
      })
    })
  })
}

import cryptoFramework from "@ohos.security.cryptoFramework"

function stringToUint8Array(str) {
    var arr = [];
    for (var i = 0, j = str.length; i < j; ++i) {
        arr.push(str.charCodeAt(i));
    }
    var tmpArray = new Uint8Array(arr);
    return tmpArray;
}

let globalKeyPair;
let SignMessageBlob;
let plan1 = "This is Sign test plan1";
let plan2 = "This is Sign test plan1";
let input1 = { data : stringToUint8Array(plan1) };
let input2 = { data : stringToUint8Array(plan2) };

function signMessagePromise() {
  let rsaGenerator = cryptoFramework.createAsyKeyGenerator("RSA1024|PRIMES_2");
  let signer = cryptoFramework.createSign("RSA1024|PKCS1|SHA256");
  let keyGenPromise = rsaGenerator.generateKeyPair();
  keyGenPromise.then( keyPair => {
    globalKeyPair = keyPair;
    let priKey = globalKeyPair.priKey;
    return signer.init(priKey);
  }).then(() => {
    return signer.update(input1);
  }).then(() => {
    return signer.sign(input2);
  }).then(dataBlob => {
    SignMessageBlob = dataBlob;
    console.info("sign output is " + SignMessageBlob.data);
  });
}

function verifyMessagePromise() {
  let verifyer = cryptoFramework.createVerify("RSA1024|PKCS1|SHA256");
  let verifyInitPromise = verifyer.init(globalKeyPair.pubKey);
  verifyInitPromise.then(() => {
    return verifyer.update(input1);
  }).then(() => {
    return verifyer.verify(input2, SignMessageBlob);
  }).then(res => {
    console.log("Verify result is " + res);
  });
}

function signMessageCallback() {
  let rsaGenerator = cryptoFramework.createAsyKeyGenerator("RSA1024|PRIMES_2");
  let signer = cryptoFramework.createSign("RSA1024|PKCS1|SHA256");
  rsaGenerator.generateKeyPair(function (err, keyPair) {
    globalKeyPair = keyPair;
    let priKey = globalKeyPair.priKey;
    signer.init(priKey, function (err, data) {
      signer.update(input1, function (err, data) {
        signer.sign(input2, function (err, data) {
          SignMessageBlob = data;
          console.info("sign output is " + SignMessageBlob.data);
        });
      });
    });
  });
}

function verifyMessageCallback() {
  let verifyer = cryptoFramework.createVerify("RSA1024|PKCS1|SHA256");
  verifyer.init(globalKeyPair.pubKey, function (err, data) {
    verifyer.update(input1, function(err, data) {
      verifyer.verify(input2, SignMessageBlob, function(err, data) {
        console.info("verify result is " + data);
      });
    });
  })
}

import cryptoFramework from "@ohos.security.cryptoFramework"

function stringToUint8Array(str) {
    var arr = [];
    for (var i = 0, j = str.length; i < j; ++i) {
        arr.push(str.charCodeAt(i));
    }
    var tmpArray = new Uint8Array(arr);
    return tmpArray;
}

let globalKeyPair;
let SignMessageBlob;
let plan1 = "This is Sign test plan1";
let plan2 = "This is Sign test plan1";
let input1 = { data : stringToUint8Array(plan1) };
let input2 = { data : stringToUint8Array(plan2) };

function signMessagePromise() {
  let eccGenerator = cryptoFramework.createAsyKeyGenerator("ECC256");
  let signer = cryptoFramework.createSign("ECC256|SHA256");
  let keyGenPromise = eccGenerator.generateKeyPair();
  keyGenPromise.then( keyPair => {
    globalKeyPair = keyPair;
    let priKey = globalKeyPair.priKey;
    return signer.init(priKey);
  }).then(() => {
    return signer.update(input1);
  }).then(() => {
    return signer.sign(input2);
  }).then(dataBlob => {
    SignMessageBlob = dataBlob;
    console.info("sign output is " + SignMessageBlob.data);
  });
}

function verifyMessagePromise() {
  let verifyer = cryptoFramework.createVerify("ECC256|SHA256");
  let verifyInitPromise = verifyer.init(globalKeyPair.pubKey);
  verifyInitPromise.then(() => {
    return verifyer.update(input1);
  }).then(() => {
    return verifyer.verify(input2, SignMessageBlob);
  }).then(res => {
    console.log("Verify result is " + res);
  });
}

function signMessageCallback() {
  let eccGenerator = cryptoFramework.createAsyKeyGenerator("ECC256");
  let signer = cryptoFramework.createSign("ECC256|SHA256");
  eccGenerator.generateKeyPair(function (err, keyPair) {
    globalKeyPair = keyPair;
    let priKey = globalKeyPair.priKey;
    signer.init(priKey, function (err, data) {
      signer.update(input1, function (err, data) {
        signer.sign(input2, function (err, data) {
          SignMessageBlob = data;
          console.info("sign output is " + SignMessageBlob.data);
        });
      });
    });
  });
}

function verifyMessageCallback() {
  let verifyer = cryptoFramework.createVerify("ECC256|SHA256");
  verifyer.init(globalKeyPair.pubKey, function (err, data) {
    verifyer.update(input1, function(err, data) {
      verifyer.verify(input2, SignMessageBlob, function(err, data) {
        console.info("verify result is " + data);
      });
    });
  })
}

import cryptoFramework from "@ohos.security.cryptoFramework"

// turn string into uint8Arr
function stringToUint8Array(str) {
  var arr = [];
  for (var i = 0, j = str.length; i < j; ++i) {
      arr.push(str.charCodeAt(i));
  }
  var tmpUint8Array = new Uint8Array(arr);
  return tmpUint8Array;
}

// generate dataBlob with given length
function GenDataBlob(dataBlobLen) {
  var dataBlob;
  if (dataBlobLen == 12) {
      dataBlob = {data: stringToUint8Array("my test data")};
  } else {
      console.error("GenDataBlob: dataBlobLen is invalid");
      dataBlob = {data: stringToUint8Array("my test data")};
  }
  return dataBlob;
}

// md with promise async
function doMdByPromise(algName) {
  var md;
  try {
    md = cryptoFramework.createMd(algName);
  } catch (error) {
    console.error("[Promise]: error code: " + error.code + ", message is: " + error.message);
  }
  console.error("[Promise]: Md algName is: " + md.algName);
  var promiseMdUpdate = md.update(GenDataBlob(12));
  promiseMdUpdate.then(() => {
    var PromiseMdDigest = md.digest();
    return PromiseMdDigest;
  }).then(mdOutput => {
    console.error("[Promise]: MD result: " + mdOutput.data);
    var mdLen = md.getMdLength();
    console.error("[Promise]: MD len: " + mdLen);
  }).catch(error => {
    console.error("[Promise]: error: " + error.message);
  });
}

// md with callback async
function doMdByCallback(algName) {
  var md;
  try {
    md = cryptoFramework.createMd(algName);
  } catch (error) {
    console.error("[Callback]: error code: " + error.code + ", message is: " + error.message);
  }
  console.error("[Callback]: Md algName is: " + md.algName);
  md.update(GenDataBlob(12), (err,) => {
    if (err) {
      console.error("[Callback]: err: " + err.code);
    }
    md.digest((err1, mdOutput) => {
      if (err1) {
        console.error("[Callback]: err: " + err1.code);
      } else {
        console.error("[Callback]: MD result: " + mdOutput.data);
        var mdLen = md.getMdLength();
        console.error("[Callback]: MD len: " + mdLen);
      }
    });
  });
}

import cryptoFramework from "@ohos.security.cryptoFramework"

let globalKeyPair;

function ecdhPromise() {
  let eccGenerator = cryptoFramework.createAsyKeyGenerator("ECC256");
  let eccKeyAgreement = cryptoFramework.createKeyAgreement("ECC256");
  let keyGenPromise = eccGenerator.generateKeyPair();
  keyGenPromise.then( keyPair => {
    globalKeyPair = keyPair;
    return eccKeyAgreement.generateSecret(keyPair.priKey, keyPair.pubKey);
  }).then((secret) => {
    console.info("ecdh output is " + secret.data);
  }).catch((error) => {
    console.error("ecdh error.");
  });
}

function ecdhCallback() {
  let eccGenerator = cryptoFramework.createAsyKeyGenerator("ECC256");
  let eccKeyAgreement = cryptoFramework.createKeyAgreement("ECC256");
  eccGenerator.generateKeyPair(function (err, keyPair) {
    globalKeyPair = keyPair;
    eccKeyAgreement.generateSecret(keyPair.priKey, keyPair.pubKey, function (err, secret) {
      if (err) {
        console.error("ecdh error.");
        return;
      }
      console.info("ecdh output is " + secret.data);
    });
  });
}

import cryptoFramework from "@ohos.security.cryptoFramework"

// turn string into uint8Arr
function stringToUint8Array(str) {
  var arr = [];
  for (var i = 0, j = str.length; i < j; ++i) {
      arr.push(str.charCodeAt(i));
  }
  var tmpUint8Array = new Uint8Array(arr);
  return tmpUint8Array;
}

// generate blob with this func
function GenDataBlob(dataBlobLen) {
  var dataBlob;
  if (dataBlobLen == 12) {
      dataBlob = {data: stringToUint8Array("my test data")};
  } else {
      console.error("GenDataBlob: dataBlobLen is invalid");
      dataBlob = {data: stringToUint8Array("my test data")};
  }
  return dataBlob;
}

// process by promise
function doHmacByPromise(algName) {
  var mac;
  try {
    mac = cryptoFramework.createMac(algName);
  } catch (error) {
    console.error("[Promise]: error code: " + error.code + ", message is: " + error.message);
  }
  console.error("[Promise]: Mac algName is: " + mac.algName);
  var KeyBlob = {
    data : stringToUint8Array("12345678abcdefgh")
  }
  var symKeyGenerator = cryptoFramework.createSymKeyGenerator("AES128");
  var promiseConvertKey = symKeyGenerator.convertKey(KeyBlob);
  promiseConvertKey.then(symKey => {
    var promiseMacInit = mac.init(symKey);
    return promiseMacInit;
  }).then(() => {
    var promiseMacUpdate = mac.update(GenDataBlob(12));
    return promiseMacUpdate;
  }).then(() => {
    var PromiseMacDoFinal = mac.doFinal();
    return PromiseMacDoFinal;
  }).then(macOutput => {
    console.error("[Promise]: HMAC result: " + macOutput.data);
    var macLen = mac.getMacLength();
    console.error("[Promise]: MAC len: " + macLen);
  }).catch(error => {
    console.error("[Promise]: error: " + error.message);
  });
}

// process by callback
function doHmacByCallback(algName) {
  var mac;
  try {
    mac = cryptoFramework.createMac(algName);
  } catch (error) {
    AlertDialog.show({message: "[Callback]: error code: " + error.code + ", message is: " + error.message});
    console.error("[Callback]: error code: " + error.code + ", message is: " + error.message);
  }
  var KeyBlob = {
    data : stringToUint8Array("12345678abcdefgh")
  }
  var symKeyGenerator = cryptoFramework.createSymKeyGenerator("AES128");
  symKeyGenerator.convertKey(KeyBlob, (err, symKey) => {
    if (err) {
      console.error("[Callback]: err: " + err.code);
    }
    mac.init(symKey, (err1, ) => {
      if (err1) {
        console.error("[Callback]: err: " + err1.code);
      }
      mac.update(GenDataBlob(12), (err2, ) => {
        if (err2) {
          console.error("[Callback]: err: " + err2.code);
        }
        mac.doFinal((err3, macOutput) => {
          if (err3) {
            console.error("[Callback]: err: " + err3.code);
          } else {
            console.error("[Callback]: HMAC result: " + macOutput.data);
            var macLen = mac.getMacLength();
            console.error("[Callback]: MAC len: " + macLen);
          }
        });
      });
    });
  });
}

import cryptoFramework from "@ohos.security.cryptoFramework"

// process by promise
function doRandByPromise(len) {
  var rand;
  try {
    rand = cryptoFramework.createRandom();
  } catch (error) {
    console.error("[Promise]: error code: " + error.code + ", message is: " + error.message);
  }
  var promiseGenerateRand = rand.generateRandom(len);
  promiseGenerateRand.then(randData => {
    console.error("[Promise]: rand result: " + randData.data);
      try {
          rand.setSeed(randData);
      } catch (error) {
          console.log("setSeed failed, errCode: " + error.code + ", errMsg: " + error.message);
      }
  }).catch(error => {
    console.error("[Promise]: error: " + error.message);
  });
}

// process by callback
function doRandByCallback(len) {
  var rand;
  try {
    rand = cryptoFramework.createRandom();
  } catch (error) {
    console.error("[Callback]: error code: " + error.code + ", message is: " + error.message);
  }
  rand.generateRandom(len, (err, randData) => {
    if (err) {
      console.error("[Callback]: err: " + err.code);
    } else {
      console.error("[Callback]: generate random result: " + randData.data);
      try {
          rand.setSeed(randData);
      } catch (error) {
          console.log("setSeed failed, errCode: " + error.code + ", errMsg: " + error.message);
      }
    }
  });
}