JavaRSA加密

Question

我在C#程序（我在下面提到）中使用了RSA非对称密钥加密算法，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加密方案：

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));

我尝试了上述java程序，但结果如下：

O+gw 7+X hY x A 9 ltD V 5 zE RsF 4 Dy Xg MTc/gx 82 wR tT 1 x fR 3 su Y 0 XB JLa dp 7 bX j mSX 7 Cp lDV do Q y H 05 Jp qg k d+1 G 4 A==

和C#程序生成像

所以有人能帮我纠正我的java程序吗...谢谢

Answer 1

您正在对不同的对象进行URLen编码，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"));

Answer 2

在我看来，您正在对两种不同的内容进行URL编码：

• 在Java中，您正在编码Base64编码的字符串，而

这两种不同方法的结果不会相同。也许你应该在Java部分编码new String（cipherData）-或者在编码之前比较两个byte[]数组？

干杯，