在C#中使用Google KMS API的加密值长度与在邮递员中直接从API直接生成的加密文本的长度不同

时间:2019-03-29 15:59:04

标签: encryption google-cloud-platform google-cloud-kms

我正在尝试使用Google KeyManagementService在C#中加密文本。 我无法使用KeyManagementServiceClient.Encrypt方法解密KeyManagementServiceClient.Decrypt生成的密码。解密给了我

Grpc.Core.RpcException: Status(StatusCode=InvalidArgument, Detail="Decryption failed: the ciphertext is invalid.")

我尝试使用google try this API链接获取密码,并且google API生成的密码长度与C#结果不同。

例如:            纯文本:text

来自C#的密码:

TaRQSJ2KXrdmJJT6MmlD8RrcxzPJEa1jwAXWJ1puXg6nbl80aBcSLQBqSYOONfXhpZx8SyxCdB6mqTgr8uLJoAjva+Q4kN/p0+9RL2Sp2mHq4wjmZQ==

API的密码:

TaRQSJ2KXv9ntnS7IszL077KNPtGJnqF9pSNiWANsq8gD0whezUSKwBqSYOOKKMifiWrfPDnHL5xETHPPlms0ztjkqa5hjdtkHwpzByLzi68A40

有人对此问题进行了分阶段吗?

这是我的示例代码

 KeyManagementServiceClient keyManagementServiceClient =KeyManagementServiceClient.Create(channel);
  byte[] plaintext=Encoding.ASCII.GetBytes("test");
  EncryptRequest request = new EncryptRequest
   {
       CryptoKeyPathName = new CryptoKeyPathName("test-project", "global", "test-key", "encryption-key"),
        Plaintext = ByteString.CopyFrom(plaintext),
   };
   EncryptResponse response =keyManagementServiceClient.Encrypt(request);
   var cipher = 
   Convert.ToBase64String(response.Ciphertext.ToByteArray());

 //Decrypt
  ByteString ciphertext = ByteString.CopyFrom(Encoding.ASCII.GetBytes(cipher));

  DecryptRequest req = new DecryptRequest
        {
            CryptoKeyName = new CryptoKeyName("test-project", "global", "test-key", "encryption-key"),
            Ciphertext = ciphertext,
        };
        // Make the request
        DecryptResponse res = keyManagementServiceClient.Decrypt(req);

1 个答案:

答案 0 :(得分:5)

您已经对加密结果进行了base64编码,但是在尝试对其进行解密之前,尚未对它进行base64解码。

在线

ByteString ciphertext = ByteString.CopyFrom(Encoding.ASCII.GetBytes(cipher));

它应该看起来像

ByteString ciphertext = ByteString.FromBase64(cipher);

(还请注意,ByteString class具有内置的方法可用于进出Base64或从Base64进出)。