RSA加密，使用自有私钥解密报错

// 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; 
} 
//传入你的公钥和待加密文本即可完成加密 
async function rsaEncryptText(publicKey: string, content: string): Promise<string> { 
  let asyKeyGenerator = cryptoFramework.createAsyKeyGenerator("RSA1024"); 
  // 创建非对称密钥生成器对象 
  let base64 = new util.Base64Helper(); 
  let pkVal = base64.decodeSync(publicKey) 
  let pkBlob: cryptoFramework.DataBlob = { data: pkVal }; 
  //将公钥转换 
  let keyPair = await asyKeyGenerator.convertKey(pkBlob, null); 
  let plainText: cryptoFramework.DataBlob = { data: new Uint8Array(buffer.from(content, 'utf-8').buffer) }; 
  let encryptText = await encryptMessagePromise(keyPair.pubKey, plainText); 
  return encryptText.data.toString() 
}
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