RSA Padding与黑莓上的Bouncy Castle

Question

我正在使用Bouncy Castle来加密字符串以将它们发送到我的java Web服务,在那里它们被解密,当消息到达我得到的服务器时BadPaddingException,任何人都知道如何在J2ME上正确地将填充添加到带有Bouncy Castle的RSA Cipher？

这是客户端上的加密代码:

public byte[] Encrypt(byte[] data)
  {
     RSAKeyParameters publicKey = new RSAKeyParameters(false, new BigInteger(_publicKeyModulus), new BigInteger(_publicKeyExponent));
     RSAEngine engine = new RSAEngine();
     engine.init(true, publicKey);

     byte[] output = engine.processBlock(data, 0, data.length);

     return output;
  } 

这就是我解密服务器端的方式:

public byte[] Decrypt(byte[] data)
    {
        try {
            Cipher cipher = Cipher.getInstance("RSA");
            cipher.init(Cipher.DECRYPT_MODE, privateKey);
            byte[] cipherData = cipher.doFinal(data);
            return cipherData;
        } catch (NoSuchAlgorithmException ex) {
            Logger.getLogger(EncryptorDecryptor.class.getName()).log(Level.SEVERE, null, ex);
        } catch (NoSuchPaddingException ex) {
            Logger.getLogger(EncryptorDecryptor.class.getName()).log(Level.SEVERE, null, ex);
        } catch(IllegalBlockSizeException ex) {
            Logger.getLogger(EncryptorDecryptor.class.getName()).log(Level.SEVERE, null, ex);
        } catch(InvalidKeyException ex) {
            Logger.getLogger(EncryptorDecryptor.class.getName()).log(Level.SEVERE, null, ex);
        } catch(BadPaddingException ex) {
            Logger.getLogger(EncryptorDecryptor.class.getName()).log(Level.SEVERE, null, ex);
        }

        return null;
    }

Answer 1

而不是RSAEngine直接使用PKCS1Encoding该类并使用它来构造它

PKCS1Encoding engine = new PKCS1Encoding(new RSAEngine());