Question

我在C＃程序中使用了RSA Assymetric密钥加密算法（我在下面提到过），我必须通过java程序加密数据。我希望我的java程序生成与C＃程序相同的加密密钥。

公钥：

<RSAKeyValue>
<Modulus>zgfXY1oUe4nyndX4qtobP1BMxtJ1/rfKU5csdAcWrSVu6ZaEAX3rL3cWnaSLzX4E1BNjSP9pjge6TH7UoaWqOQ==</Modulus>
<Exponent>AQAB</Exponent>
</RSAKeyValue>

C＃加密程序：

RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();

 rsa.FromXmlString(PublicKey); // read public key XML defined above

byte[] buffer = rsa.Encrypt(Encoding.UTF8.GetBytes(strToEncrypt), false);

string encryptedStr = HttpUtility.UrlEncode(buffer);// byteConverterGetString;

Java加密程序：

byte[] modulusBytes = Base64.decode("zgfXY1oUe4nyndX4qtobP1BMxtJ1/rfKU5csdAcWrSVu6ZaEAX3rL3cWnaSLzX4E1BNjSP9pjge6TH7UoaWqOQ==");
byte[] exponentBytes = Base64.decode("AQAB");

BigInteger modulus = new BigInteger(1, modulusBytes );               
BigInteger exponent = new BigInteger(1, exponentBytes);

RSAPublicKeySpec rsaPubKey = new RSAPublicKeySpec(modulus, exponent);

KeyFactory fact = KeyFactory.getInstance("RSA");

PublicKey pubKey = fact.generatePublic(rsaPubKey);

Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");

cipher.init(Cipher.ENCRYPT_MODE, pubKey);

byte[] plainBytes = new String("Admin123").getBytes("UTF-8");

byte[] cipherData = cipher.doFinal( plainBytes );

String encryptedString = Base64.encodeBytes(cipherData);

System.out.println(URLEncoder.encode(encryptedString));

我在java程序上面尝试过，但它给我的结果如下：

0％2Bgw7％2BXhYxA9ltDV5zERsF4DyXgMTc％2Fgx82wRtT1xfR3suY0XBJLadp7bXjmSX7CplDVdoQyH05Jpqgkd％2B1G4A％3D％3D

和C＃程序一样生成

％23E％03％C2％10）％40E％BF％7B％F9％11％87c0％12Q％b9w％BA％2C％98％B4％B1％96％BC％ee的％c5_％c9t％1E '％E71％85％b68t％00％3A％B7％D9％FB％A1％18％BA％10％B4％C3C％E1' *％3B％F6D％E2％CC6％82％80％F2％A6 < / p>

所以任何人都可以帮我纠正我的java程序.. 感谢

Answer 1

在我看来，你是URL编码两个不同的东西：

在Java中，您正在编码Base64编码的字符串，而
在C＃中你是在一个字节数组

这两种不同方法的结果将不尽相同。也许你应该在Java部分编码new String( cipherData ) - 或者只是在编码之前比较两个byte[]数组？

干杯，

Answer 2

您是编码不同对象的URL，只需尝试以下代码：

byte[] modulusBytes = Base64.decode("zgfXY1oUe4nyndX4qtobP1BMxtJ1/rfKU5csdAcWrSVu6ZaEAX3rL3cWnaSLzX4E1BNjSP9pjge6TH7UoaWqOQ==");
byte[] exponentBytes = Base64.decode("AQAB");

BigInteger modulus = new BigInteger(1, modulusBytes );               
BigInteger exponent = new BigInteger(1, exponentBytes);

RSAPublicKeySpec rsaPubKey = new RSAPublicKeySpec(modulus, exponent);

KeyFactory fact = KeyFactory.getInstance("RSA");

PublicKey pubKey = fact.generatePublic(rsaPubKey);

Cipher cipher = Cipher.getInstance("RSA/ECB/PKCS1Padding");

cipher.init(Cipher.ENCRYPT_MODE, pubKey);

byte[] plainBytes = new String("Admin123").getBytes("UTF-8");

byte[] cipherData = cipher.doFinal( plainBytes );

String string = new String(cipherData);

System.out.println(URLEncoder.encode(string,"UTF-8"));

Java RSA加密

2 个答案: