HarmonyOS鸿蒙Next中公钥的格式相关

鸿蒙端支持原生rsa加密 并且可以直接接受base64的公钥和私钥进行加解密 参考一下代码demo实例

import { cryptoFramework } from '@kit.CryptoArchitectureKit';
import { buffer, util } from '@kit.ArkTS';
@Entry
@Component
struct RSACrypto {
  @State message: string = '点击开始';
  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold)
          .onClick(() => {
            rsa1024Crypto()
          })
      }
      .width('100%')
    }
    .height('100%')
  }
}

// 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 rsa1024Crypto() {
  let pkData = "xxx";
  let skData = "xxxy";
  let base64 = new util.Base64Helper();
  let base64skData = base64.decodeSync(skData );
  let base64pkData = base64.decodeSync(pkData )
  let keyPair = await genKeyPairByData(base64pkData, base64skData);
  let pubKey = keyPair.pubKey;
  let priKey = keyPair.priKey;
  let message = " This is a long plainTest!";
  // 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);
  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');
  }
}