HarmonyOS getPublicKey和Cipher的RSA_MODE可用哪个api替代

private String genEncryptKey(KeyStore store) throws Exception { 
  byte[] key = new byte[16]; //128 bits 
  new SecureRandom().nextBytes(key); 
  PublicKey publicKey; 
  if (Build.VERSION.SDK_INT >= 28) { 
    publicKey = store.getCertificate(KEY_ALIAS).getPublicKey(); 
  } else { 
    KeyStore.PrivateKeyEntry asymmetricKey = (KeyStore.PrivateKeyEntry) store.getEntry(KEY_ALIAS, null); 
    publicKey = asymmetricKey.getCertificate().getPublicKey(); 
  } 
  Cipher cipher = Cipher.getInstance(RSA_MODE); 
  cipher.init(Cipher.ENCRYPT_MODE, publicKey); 
  return StringUtils.base64String(cipher.doFinal(key)); 
}1.
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前面代码是生成公私钥并保存，下面是使用的地方获取到私钥

PrivateKey privateKey; 
if (Build.VERSION.SDK_INT >= 28) { 
  privateKey = (PrivateKey) store.getKey(KEY_ALIAS, null); 
} else { 
  KeyStore.PrivateKeyEntry asymmetricKey = (KeyStore.PrivateKeyEntry) store.getEntry(KEY_ALIAS, null); 
  privateKey = asymmetricKey.getPrivateKey(); 
}1.
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HarmonyOS

FengTianYa

2024-08-13 14:56:20

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回答 1

按赞同

按时间

put_get

可参考https://developer.huawei.com/consumer/cn/doc/harmonyos-guides-V5/crypto-convert-binary-data-to-asym-key-pair-V5

以下方法来实现

async genRsaPubKey () { 
  const pubKey = "asdasd123231dsasdasd123123asdasd12312xxxxxxxxxxxxxxxxxxxxxxxxxxxx"; 
  /* 
  * 引入外部的公钥加密 
  * */ 
  const base64 = new util.Base64Helper() 
  let publicKeyDataBlob: cryptoFramework.DataBlob = { data: base64.decodeSync(pubKey) }; 
  let asyKeyGenerator = cryptoFramework.createAsyKeyGenerator('RSA1024'); 
  let cipher = cryptoFramework.createCipher('RSA|ECB|PKCS1'); //创建一个 Cipher (解密)对象 
  let keyGenPromise: cryptoFramework.KeyPair = await asyKeyGenerator.convertKey(publicKeyDataBlob, null); 
  await cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, keyGenPromise.pubKey, null); 
  const plaintext = '我是明文' 
  let put: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from(plaintext).buffer) }; 
  const finalRes = await cipher.doFinal(put) 
  console.log(TAG, `加密成功 ${finalRes.data}`) 
}1.
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