HarmonyOS 鸿蒙Next 数据加密问题

您可以学习鸿蒙官方提供的加解密算法框架然后进行相应的数据加密，参考链接如下：

https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/crypto-encrypt-decrypt-dev-V5

https://developer.huawei.com/consumer/cn/doc/harmonyos-references-V5/js-apis-cryptoframework-V5

您可以在官网文档的示例代码中下载加解密相关的代码demo进行参考和使用,对应链接如下：

https://developer.huawei.com/consumer/cn/doc/best-practices-V5/bpta-cross-platform-compatibility-V5

您可以页面全局搜索“加解密”来快速定位至相应的示例代码处。

您可以参考如下demo进行加解密功能实现：

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

import buffer from '@ohos.buffer';

// 加密消息

async function encryptMessagePromise(publicKey: cryptoFramework.PubKey, plainText: cryptoFramework.DataBlob) {

  let cipher = cryptoFramework.createCipher('RSA1024|PKCS1');

  await cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, publicKey, null);

  let encryptData = await cipher.doFinal(plainText);

  return encryptData;

}

// 解密消息

async function decryptMessagePromise(privateKey: cryptoFramework.PriKey, cipherText: cryptoFramework.DataBlob) {

  let decoder = cryptoFramework.createCipher('RSA1024|PKCS1');

  await decoder.init(cryptoFramework.CryptoMode.DECRYPT_MODE, privateKey, null);

  let decryptData = await decoder.doFinal(cipherText);

  return decryptData;

}

// 生成RSA密钥对

async function genKeyPairByData(pubKeyData: Uint8Array, priKeyData: Uint8Array) {

  let pubKeyBlob: cryptoFramework.DataBlob = { data: pubKeyData };

  let priKeyBlob: cryptoFramework.DataBlob = { data: priKeyData };

  let rsaGenerator = cryptoFramework.createAsyKeyGenerator('RSA1024');

  let keyPair = await rsaGenerator.convertKey(pubKeyBlob, priKeyBlob);

  console.info('convertKey success');

  return keyPair;

}

async function main() {

  let pkData = 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, 197, 64, 10, 198, 14, 110, 65, 92, 206, 35, 28, 123, 153, 24, 134, 255, 145, 74, 42, 173, 40, 215, 146, 58, 143, 46, 10, 195, 154, 160, 69, 196, 220, 152, 179, 44, 111, 200, 84, 78, 215, 73, 210, 181, 12, 29, 70, 68, 36, 135, 153, 89, 230, 202, 130, 212, 111, 243, 234, 92, 131, 62, 145, 50, 73, 48, 104, 245, 46, 70, 45, 157, 147, 143, 140, 162, 156, 216, 220, 49, 121, 142, 194, 33, 223, 201, 0, 16, 163, 210, 240, 118, 92, 147, 121, 220, 17, 114, 24, 52, 125, 135, 176, 88, 21, 83, 86, 17, 156, 88, 250, 48, 79, 86, 128, 248, 105, 208, 133, 140, 13, 153, 164, 191, 136, 164, 44, 53, 2, 3, 1, 0, 1]);

  let skData = new Uint8Array([48, 130, 2, 119, 2, 1, 0, 48, 13, 6, 9, 42, 134, 72, 134, 247, 13, 1, 1, 1, 5, 0, 4, 130, 2, 97, 48, 130, 2, 93, 2, 1, 0, 2, 129, 129, 0, 197, 64, 10, 198, 14, 110, 65, 92, 206, 35, 28, 123, 153, 24, 134, 255, 145, 74, 42, 173, 40, 215, 146, 58, 143, 46, 10, 195, 154, 160, 69, 196, 220, 152, 179, 44, 111, 200, 84, 78, 215, 73, 210, 181, 12, 29, 70, 68, 36, 135, 153, 89, 230, 202, 130, 212, 111, 243, 234, 92, 131, 62, 145, 50, 73, 48, 104, 245, 46, 70, 45, 157, 147, 143, 140, 162, 156, 216, 220, 49, 121, 142, 194, 33, 223, 201, 0, 16, 163, 210, 240, 118, 92, 147, 121, 220, 17, 114, 24, 52, 125, 135, 176, 88, 21, 83, 86, 17, 156, 88, 250, 48, 79, 86, 128, 248, 105, 208, 133, 140, 13, 153, 164, 191, 136, 164, 44, 53, 2, 3, 1, 0, 1, 2, 129, 128, 70, 75, 184, 139, 53, 1, 94, 17, 240, 244, 218, 101, 193, 253, 215, 190, 164, 204, 197, 192, 200, 89, 107, 39, 171, 119, 65, 38, 204, 168, 105, 180, 234, 217, 16, 161, 185, 132, 175, 103, 25, 154, 153, 153, 36, 36, 26, 178, 150, 66, 45, 8, 185, 19, 90, 228, 210, 177, 30, 200, 177, 141, 78, 184, 248, 59, 113, 154, 145, 73, 160, 24, 73, 157, 86, 207, 186, 32, 95, 200, 106, 252, 107, 69, 170, 193, 216, 196, 181, 142, 74, 203, 15, 18, 89, 228, 152, 19, 239, 21, 233, 98, 121, 214, 57, 187, 111, 239, 223, 248, 199, 70, 223, 108, 108, 113, 234, 144, 155, 95, 246, 144, 244, 122, 39, 55, 127, 81, 2, 65, 0, 246, 96, 188, 0, 0, 104, 221, 105, 139, 144, 63, 175, 209, 87, 179, 162, 88, 192, 99, 82, 125, 53, 54, 48, 70, 245, 239, 37, 15, 242, 247, 84, 115, 187, 196, 95, 156, 40, 165, 60, 64, 102, 13, 229, 243, 2, 149, 0, 232, 226, 221, 192, 95, 11, 12, 208, 5, 181, 98, 62, 210, 190, 141, 235, 2, 65, 0, 204, 244, 34, 10, 105, 80, 76, 116, 163, 35, 231, 168, 187, 206, 189, 101, 215, 103, 80, 115, 86, 11, 34, 127, 203, 114, 84, 188, 121, 174, 169, 31, 142, 2, 182, 27, 140, 225, 157, 227, 71, 98, 15, 203, 187, 213, 5, 190, 20, 121, 8, 30, 193, 100, 232, 101, 141, 8, 124, 20, 29, 78, 6, 95, 2, 65, 0, 204, 43, 225, 224, 6, 118, 224, 117, 100, 200, 199, 94, 70, 23, 109, 175, 173, 232, 208, 230, 61, 8, 105, 189, 156, 48, 150, 91, 154, 89, 248, 136, 173, 215, 254, 166, 84, 220, 130, 1, 234, 68, 40, 100, 84, 251, 224, 202, 254, 51, 115, 28, 198, 38, 124, 25, 175, 129, 94, 199, 61, 17, 216, 189, 2, 64, 72, 230, 129, 129, 48, 138, 134, 87, 106, 123, 231, 247, 165, 173, 216, 194, 115, 198, 228, 223, 209, 120, 46, 114, 68, 92, 75, 117, 170, 214, 140, 131, 147, 208, 181, 19, 193, 157, 178, 186, 87, 246, 178, 101, 166, 79, 20, 54, 211, 51, 101, 199, 2, 197, 48, 192, 134, 84, 193, 69, 170, 82, 201, 131, 2, 65, 0, 213, 165, 55, 166, 131, 210, 195, 56, 250, 147, 195, 61, 205, 208, 189, 185, 40, 52, 50, 119, 137, 23, 246, 46, 220, 108, 52, 23, 152, 154, 94, 32, 144, 195, 184, 249, 21, 168, 12, 57, 222, 18, 60, 117, 81, 157, 72, 30, 155, 190, 165, 242, 228, 139, 240, 184, 145, 170, 103, 210, 160, 161, 135, 13]);

  let keyPair = await genKeyPairByData(pkData, skData);

  let pubKey = keyPair.pubKey;

  let priKey = keyPair.priKey;

  let message = 'This is a test';

  // 把字符串按utf-8解码为Uint8Array

  let plainText: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from(message, 'utf-8').buffer) };

  let encryptText = await encryptMessagePromise(pubKey, plainText);

  console.info('encrypted result string:' + JSON.stringify(encryptText));

  let decryptText = await decryptMessagePromise(priKey, encryptText);

  if (plainText.data.toString() === decryptText.data.toString()) {

    console.info('decrypt ok');

    // 把Uint8Array按utf-8编码为字符串

    let messageDecrypted = buffer.from(decryptText.data).toString('utf-8');

    console.info('decrypted result string:' + messageDecrypted);

  } else {

    console.error('decrypt failed');

  }

}

@Entry

@Component

struct Index {

  @State message: string = 'Hello World';

  build() {

    Row() {

      Column() {

        Button(this.message)

          .fontSize(50)

          .fontWeight(FontWeight.Bold)

          .onClick(()=>{

            main()

          })

      }

      .width('100%')

    }

    .height('100%')

  }

}