/// <summary>
/// RSA 的密钥产生 产生私钥 和公钥
/// </summary>
/// <param name="xmlKeys"></param>
/// <param name="xmlPublicKey"></param>
public static void RSAKey(out string xmlKeys, out string xmlPublicKey)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
//私钥
xmlKeys = RSAKeyConvert.RSAPrivateKeyDotNet2Java(rsa.ToXmlString(true));
//公钥
xmlPublicKey = RSAKeyConvert.RSAPublicKeyDotNet2Java(rsa.ToXmlString(false));
}
/// <summary>
/// RSA的解密函数
/// </summary>
/// <param name="encryptedInput"></param>
/// <param name="privateKey"></param>
/// <returns></returns>
public static string RsaDecrypt(string encryptedInput, string privateKey)
{
try
{
if (string.IsNullOrEmpty(encryptedInput))
{
return(string.Empty);
}
if (string.IsNullOrWhiteSpace(privateKey))
{
throw new ArgumentException("Invalid Private Key");
}
privateKey = RSAKeyConvert.RSAPrivateKeyJava2DotNet(privateKey);
using (var rsaProvider = new RSACryptoServiceProvider())
{
var inputBytes = Convert.FromBase64String(encryptedInput);
rsaProvider.FromXmlString(privateKey);
int bufferSize = rsaProvider.KeySize / 8;
var buffer = new byte[bufferSize];
using (MemoryStream inputStream = new MemoryStream(inputBytes),
outputStream = new MemoryStream())
{
while (true)
{
int readSize = inputStream.Read(buffer, 0, bufferSize);
if (readSize <= 0)
{
break;
}
var temp = new byte[readSize];
Array.Copy(buffer, 0, temp, 0, readSize);
var rawBytes = rsaProvider.Decrypt(temp, false);
outputStream.Write(rawBytes, 0, rawBytes.Length);
}
return(System.Web.HttpUtility.UrlDecode(Encoding.UTF8.GetString(outputStream.ToArray())));
}
}
}
catch
{
//ex.ToErrorLog();
throw new Exception("校验报文失败");
}
}
//##############################################################################
//RSA 方式加密
//说明KEY必须是XML的行式,返回的是字符串
//在有一点需要说明！！该加密方式有 长度 限制的！！
//##############################################################################
//RSA的加密函数
/// <summary>
/// RSA加密函数
/// </summary>
/// <param name="rawInput"></param>
/// <param name="publicKey"></param>
/// <returns></returns>
public static string RsaEncrypt(string rawInput, string publicKey)
{
if (string.IsNullOrEmpty(rawInput))
{
return(string.Empty);
}
if (string.IsNullOrWhiteSpace(publicKey))
{
throw new ArgumentException("Invalid Public Key");
}
publicKey = RSAKeyConvert.RSAPublicKeyJava2DotNet(publicKey);
using (var rsaProvider = new RSACryptoServiceProvider())
{
var inputBytes = Encoding.UTF8.GetBytes(rawInput); //有含义的字符串转化为字节流
rsaProvider.FromXmlString(publicKey); //载入公钥
int bufferSize = (rsaProvider.KeySize / 8) - 11; //单块最大长度
var buffer = new byte[bufferSize];
using (MemoryStream inputStream = new MemoryStream(inputBytes),
outputStream = new MemoryStream())
{
while (true)
{ //分段加密
int readSize = inputStream.Read(buffer, 0, bufferSize);
if (readSize <= 0)
{
break;
}
var temp = new byte[readSize];
Array.Copy(buffer, 0, temp, 0, readSize);
var encryptedBytes = rsaProvider.Encrypt(temp, false);
outputStream.Write(encryptedBytes, 0, encryptedBytes.Length);
}
return(Convert.ToBase64String(outputStream.ToArray()));//转化为字节流方便传输
}
}
}
