/**
** 加密方法
*
* @param source
* ： 明文
* @param e
* 公钥
* @param n
* @return 密文 带","
* @
*/
public static String encrypt(String source, BigInteger e, BigInteger n,
int numBit)
{
String text = System.Web.HttpUtility.UrlEncode(source, Encoding.UTF8);//URLEncoder.encode(source, "UTF-8");// 为了支持汉字、汉字和英文混排
if (text == null || "".Equals(text))
{
throw new Exception("明文转换为UTF-8,导致转换异常!!!");
}
byte[] arraySendM = Encoding.UTF8.GetBytes(text);//text.GetBytes("UTF-8");
if (arraySendM == null)
{
throw new Exception("明文转换为UTF-8,导致转换异常!!!");
}
if (numBit <= 1)
{
throw new Exception("随机数位数不能少于2!!!");
}
int numeroByte = (numBit - 1) / 8;
byte[][] encodSendM = RSAUtil.byteToEm(arraySendM, numeroByte);
BigInteger[] encodingM = RSAUtil.encodeRSA(encodSendM, e, n);
StringBuilder encondSm = new StringBuilder();
foreach (BigInteger em in encodingM)
{
encondSm.Append(em.ToString(16));
encondSm.Append(" ");
}
return(encondSm.ToString());
}
public static bool validSign(String transdata, String sign, String key)
{
/*
* $trans_data = '{"exorderno":"10004200000001100042","transid":"02113013118562300203","waresid":1,"appid":"20004600000001200046","feetype":0,"money":3000,"count":1,"result":0,"transtype":0,"transtime":"2013-01-31 18:57:27","cpprivate":"123456"}';
* $key = 'MjhERTEwQkFBRDJBRTRERDhDM0FBNkZBMzNFQ0RFMTFCQTBCQzE3QU1UUTRPRFV6TkRjeU16UTVNRFUyTnpnek9ETXJNVE15T1RRME9EZzROVGsyTVRreU1ETXdNRE0zTnpjd01EazNNekV5T1RJek1qUXlNemN4';
* $sign = '28adee792782d2f723e17ee1ef877e7 166bc3119507f43b06977786376c0434 633cabdb9ee80044bc8108d2e9b3c86e';
*/
// transdata = "{\"exorderno\":\"10004200000001100042\",\"transid\":\"02113013118562300203\",\"waresid\":1,\"appid\":\"20004600000001200046\",\"feetype\":0,\"money\":3000,\"count\":1,\"result\":0,\"transtype\":0,\"transtime\":\"2013-01-31 18:57:27\",\"cpprivate\":\"123456\"},\"paytype\":401";
// key = "MjhERTEwQkFBRDJBRTRERDhDM0FBNkZBMzNFQ0RFMTFCQTBCQzE3QU1UUTRPRFV6TkRjeU16UTVNRFUyTnpnek9ETXJNVE15T1RRME9EZzROVGsyTVRreU1ETXdNRE0zTnpjd01EazNNekV5T1RJek1qUXlNemN4";
// sign = "28adee792782d2f723e17ee1ef877e7 166bc3119507f43b06977786376c0434 633cabdb9ee80044bc8108d2e9b3c86e";
//jsonStr = transdata ={ "exorderno":"YYHPay20160302194522756","transid":"01416030219452647215","waresid":1,"appid":"5000805433","feetype":0,"money":6,"count":1,"result":0,"transtype":0,"transtime":"2016-03-02 19:45:51","cpprivate":"515游戏-60000游戏币","paytype":401}
//&sign = 7a532a31a1834b57499c4724939f1a16 5c5b1e091f08b714ead4ebf1a9915ae3 2cc8204e3d228da1aea4dace9bc5fdab
//transdata = "{\"exorderno\":\"YYHPay20160302194522756\",\"transid\":\"01416030219452647215\",\"waresid\":1,\"appid\":\"5000805433\",\"feetype\":0,\"money\":6,\"count\":1,\"result\":0,\"transtype\":0,\"transtime\":\"2016-03-02 19:45:51\",\"cpprivate\":\"515游戏-60000游戏币\",\"paytype\":401}";
// key = "OEQxODM1M0Q2QjMwNDAzOUYwRDJEMkE4OUVEMjIyMjgwMUU3QzY1RE1UYzJORFkyT0RJMU1UWXdNVGd5TXpnNU16TXJNekU1T0RrNE9ETTRPRGcyT0RnMk5EY3pOVEUyTXprd01UYzBOekV4TnpVMU5UUTRNakU1";
// sign = "7a532a31a1834b57499c4724939f1a16 5c5b1e091f08b714ead4ebf1a9915ae3 2cc8204e3d228da1aea4dace9bc5fdab";
try
{
MD5 md5 = new MD5CryptoServiceProvider();
byte[] output = md5.ComputeHash(Encoding.UTF8.GetBytes(transdata.Trim()));
String md5str = BitConverter.ToString(output).Replace("-", "");
String decodeBaseStr = Base64.DecodeBase64(key.Trim());
String[] decodeBaseVec = decodeBaseStr.Replace('+', '#').Split('#');
String privateKey = decodeBaseVec[0];
String modkey = decodeBaseVec[1];
String reqMd5 = RSAUtil.decrypt(sign.Trim(), new BigInteger(privateKey),
new BigInteger(modkey));
if ((md5str.ToLower()).Equals(reqMd5.ToLower()))
{
return(true);
}
else
{
return(false);
}
}
catch (Exception e)
{
}
return(false);
}
/**
* 解密算法
*
* @param cryptograph
* :密文,带","
* @param d
* 私钥
* @param n
* @param numBit
* 位数
* @return
* @
*/
public static String decrypt(String cryptograph, BigInteger d,
BigInteger n, int numBit)
{
String[] chs = cryptograph.Split(' ');
if (chs == null || chs.GetLength(0) <= 0)
{
throw new Exception("密文不符合要求!!!");
}
int numeroToken = chs.GetLength(0);
BigInteger[] StringToByte = new BigInteger[numeroToken];
for (int i = 0; i < numeroToken; i++)
{
StringToByte[i] = new BigInteger(chs[i], 16);
}
byte[][] encodeM = RSAUtil.dencodeRSA(StringToByte, d, n);
byte[] sendMessage = RSAUtil.StringToByte(encodeM);
//String message = new String(sendMessage, "UTF-8");
string message = System.Text.Encoding.Default.GetString(sendMessage);
String result = System.Web.HttpUtility.UrlDecode(message, Encoding.UTF8);//.UrlDecode.decode(message, "UTF-8");
return(result);
}
