RSA 加密实践问题？

Question

将java中RSA加密代码翻译成 arkts 代码时，无法确定正确的API。希望提供正确的arkts代码示例。

Answer 1

//加解密分开示例：
//加密:
public static async add(str: string, publicKey: string): Promise<string> {
  let result = '';
  try {
  let asyKeyGenerator = cryptoFramework.createAsyKeyGenerator(this.ASY_KEY_NAME_RSA_3072);
  const publicKeyDataBlob = { data: this.decodeToUint8Array(publicKey) };
  let cipher = cryptoFramework.createCipher(this.ALG_NAME_RSA_3072); //创建一个 Cipher (解密)对象
  let put: cryptoFramework.DataBlob = { data: this.stringToUint8Array(str) };
  let globalKeyPair: cryptoFramework.KeyPair = await asyKeyGenerator.convertKey(publicKeyDataBlob, null);
  await cipher.init(cryptoFramework.CryptoMode.ENCRYPT_MODE, globalKeyPair.pubKey, null);
  const finalRes = await cipher.doFinal(put)
  result = this.encodeToString(finalRes.data);
} catch (err) {
  console.log(err.message)
}
return result;
}

//解密
public static async rsaDecrypt(message: string | Uint8Array, privateKey: string): Promise<string> {
  let result = '';
  try {
  let asyKeyGenerator = cryptoFramework.createAsyKeyGenerator(this.ASY_KEY_NAME_RSA_3072);
  const privateKeyDataBlob = { data: this.decodeToUint8Array(privateKey) };
  const keyPair = await asyKeyGenerator.convertKey(null, privateKeyDataBlob);
  let cipher = cryptoFramework.createCipher(this.ALG_NAME_RSA_3072); //创建一个 Cipher (解密)对象
  await cipher.init(cryptoFramework.CryptoMode.DECRYPT_MODE, keyPair.priKey, null);
  let bytes: Uint8Array = null;
  if (typeof message === 'string') {
  bytes = this.decodeToUint8Array(message);
} else {
  bytes = message;
}
const finalRes = await cipher.doFinal({ data: bytes })
result = this.uint8ArrayToString(finalRes.data);
} catch (err) {
  console.error(err.code)
}
return result;
}