java与.net平台之间进行RSA加密验证

            PKCS8EncodedKeySpec pvkKeySpec = new PKCS8EncodedKeySpec(
                    encodedPrivkey);
            KeyFactory keyFactory = KeyFactory.getInstance("RSA");
            RSAPrivateCrtKey pvkKey = (RSAPrivateCrtKey) keyFactory
                    .generatePrivate(pvkKeySpec);

            buff.append("<RSAKeyValue>");
            buff.append("<Modulus>"
                    + b64encode(removeMSZero(pvkKey.getModulus().toByteArray()))
                    + "</Modulus>");

            buff.append("<Exponent>"
                    + b64encode(removeMSZero(pvkKey.getPublicExponent()
                            .toByteArray())) + "</Exponent>");

            buff.append("<P>"
                    + b64encode(removeMSZero(pvkKey.getPrimeP().toByteArray()))
                    + "</P>");

            buff.append("<Q>"
                    + b64encode(removeMSZero(pvkKey.getPrimeQ().toByteArray()))
                    + "</Q>");

            buff.append("<DP>"
                    + b64encode(removeMSZero(pvkKey.getPrimeExponentP()
                            .toByteArray())) + "</DP>");

            buff.append("<DQ>"
                    + b64encode(removeMSZero(pvkKey.getPrimeExponentQ()
                            .toByteArray())) + "</DQ>");

            buff.append("<InverseQ>"
                    + b64encode(removeMSZero(pvkKey.getCrtCoefficient()
                            .toByteArray())) + "</InverseQ>");

            buff.append("<D>"
                    + b64encode(removeMSZero(pvkKey.getPrivateExponent()
                            .toByteArray())) + "</D>");
            buff.append("</RSAKeyValue>");

            return buff.toString().replaceAll("[ \t\n\r]", "");
        } catch (Exception e) {
            System.err.println(e);
            return null;
        }
    }

    // --- Returns XML encoded RSA public key string suitable for .NET
    // CryptoServiceProvider.FromXmlString(true) ------
    // --- Leading zero bytes (most significant) must be removed for XML
    // encoding for .NET; otherwise format error ---

    private String getRSAPublicKeyAsNetFormat(byte[] encodedPrivkey) {
        try {
            StringBuffer buff = new StringBuffer(1024);

            PKCS8EncodedKeySpec pvkKeySpec = new PKCS8EncodedKeySpec(
                    encodedPrivkey);
            KeyFactory keyFactory = KeyFactory.getInstance("RSA");
            RSAPrivateCrtKey pvkKey = (RSAPrivateCrtKey) keyFactory
                    .generatePrivate(pvkKeySpec);
            buff.append("<RSAKeyValue>");
            buff.append("<Modulus>"
                    + b64encode(removeMSZero(pvkKey.getModulus().toByteArray()))
                    + "</Modulus>");
            buff.append("<Exponent>"
                    + b64encode(removeMSZero(pvkKey.getPublicExponent()
                            .toByteArray())) + "</Exponent>");
            buff.append("</RSAKeyValue>");
            return buff.toString().replaceAll("[ \t\n\r]", "");
        } catch (Exception e) {
            System.err.println(e);
            return null;
        }
    }

    // --------- remove leading (Most Significant) zero byte if present
    // ----------------
    private byte[] removeMSZero(byte[] data) {
        byte[] data1;
        int len = data.length;
        if (data[0] == 0) {
            data1 = new byte[data.length - 1];
            System.arraycopy(data, 1, data1, 0, len - 1);
        } else
            data1 = data;

        return data1;
    }

    private String b64encode(byte[] data) {

        String b64str = new String(Base64Encoder.encode(data));
        return b64str;
    }

    private byte[] b64decode(String data) {
        byte[] decodeData = Base64Decoder.decode(data);
        return decodeData;
    }

    public static void main(String args[]) {
        ssosign sso = new ssosign();
//         sso.GenerateKeys(
//         1024,
//         "d:/private.key",
//         "d:/public.key",
//         "d:/netpublic.key",
//         "d:/netprivate.key");

         String signedData = sso
         .Sign("zhangxn",
         "2010-12-10 11:21:18",
         "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");
         System.out.println(signedData);

//        String signedData = "D+vkrMIe9cJyr3kELI5jNes/bJe7MLExyJDMqJyBlVgFtmPNQ723IsBtWmqO93yoBoKHaxeTI1kwaJzESe3X5vqS6TfFBTl+IeX5aJ/cc1+Hxo5Rr2QZwzUywgS/e3gRC+Ik+Fx0M0gBaQTGNdIDNaIvl776+0SNVaD0L3Sar9k=";
//        boolean res = sso
//                .Verify(signedData,
//                        "zhangxn",
//                        "2010-12-10 11:21:18",
//                        "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDWWmcu+6YPz8150nuzhZLxQ7045FtdVOAleZ9rvZsjgDUvWXo2n3UERND7IHwWrqIZbDk5Hw4HZRtEFyilvZ616kOpZ3uSYK1tVPfqRNb4Tx1Z1pWNsjYEJcQZpe7M890Y6WnnY5prBhHnPIbQyIK8niMTtEMlrHgKXbhmo9SzhQIDAQAB");
//        System.out.println(res);

    }