RSA加密解密源码：
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Security.Cryptography;
namespace MyRSA
{
public class MyRSA
{
private static string publicKey =
"<RSAKeyValue><Modulus>6CdsXgYOyya/yQH" +
"TO96dB3gEurM2UQDDVGrZoe6RcAVTxAqDDf5L" +
"wPycZwtNOx3Cfy44/D5Mj86koPew5soFIz9sx" +
"PAHRF5hcqJoG+q+UfUYTHYCsMH2cnqGVtnQiE" +
"/PMRMmY0RwEfMIo+TDpq3QyO03MaEsDGf13sP" +
"w9YRXiac=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";
private static string privateKey =
"<RSAKeyValue><Modulus>6CdsXgYOyya/yQH" +
"TO96dB3gEurM2UQDDVGrZoe6RcAVTxAqDDf5L" +
"wPycZwtNOx3Cfy44/D5Mj86koPew5soFIz9sx" +
"PAHRF5hcqJoG+q+UfUYTHYCsMH2cnqGVtnQiE" +
"/PMRMmY0RwEfMIo+TDpq3QyO03MaEsDGf13sP" +
"w9YRXiac=</Modulus><Exponent>AQAB</Exponent>" +
"<P>/aoce2r6tonjzt1IQI6FM4ysR40j/gKvt4d" +
"L411pUop1Zg61KvCm990M4uN6K8R/DUvAQdrRd" +
"VgzvvAxXD7ESw==</P><Q>6kqclrEunX/fmOle" +
"VTxG4oEpXY4IJumXkLpylNR3vhlXf6ZF9obEpG" +
"lq0N7sX2HBxa7T2a0WznOAb0si8FuelQ==</Q>" +
"<DP>3XEvxB40GD5v/Rr4BENmzQW1MBFqpki6FU" +
"GrYiUd2My+iAW26nGDkUYMBdYHxUWYlIbYo6Te" +
"zc3d/oW40YqJ2Q==</DP><DQ>LK0XmQCmY/ArY" +
"gw2Kci5t51rluRrl4f5l+aFzO2K+9v3PGcndjA" +
"StUtIzBWGO1X3zktdKGgCLlIGDrLkMbM21Q==</DQ><InverseQ>" +
"GqC4Wwsk2fdvJ9dmgYlej8mTDBWg0Wm6aqb5kjn" +
"cWK6WUa6CfD+XxfewIIq26+4Etm2A8IAtRdwPl4" +
"aPjSfWdA==</InverseQ><D>a1qfsDMY8DSxB2D" +
"Cr7LX5rZHaZaqDXdO3GC01z8dHjI4dDVwOS5ZFZ" +
"s7MCN3yViPsoRLccnVWcLzOkSQF4lgKfTq3IH40" +
"H5N4gg41as9GbD0g9FC3n5IT4VlVxn9ZdW+WQry" +
"oHdbiIAiNpFKxL/DIEERur4sE1Jt9VdZsH24CJE=</D></RSAKeyValue>";
static public string Decrypt(string base64code)
{
try
{
//Create a UnicodeEncoder to convert between byte array and string.
UnicodeEncoding ByteConverter = new UnicodeEncoding();
//Create a new instance of RSACryptoServiceProvider to generate
//public and private key data.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
RSA.FromXmlString(privateKey);
byte[] encryptedData;
byte[] decryptedData;
encryptedData = Convert.FromBase64String(base64code);
//Pass the data to DECRYPT, the private key information
//(using RSACryptoServiceProvider.ExportParameters(true),
//and a boolean flag specifying no OAEP padding.
decryptedData = RSADecrypt(
encryptedData, RSA.ExportParameters(true), false);
//Display the decrypted plaintext to the console.
return ByteConverter.GetString(decryptedData);
}
catch (Exception exc)
{
//Exceptions.LogException(exc);
Console.WriteLine(exc.Message);
return "";
}
}
static public string Encrypt(string toEncryptString)
{
try
{
//Create a UnicodeEncoder to convert between byte array and string.
UnicodeEncoding ByteConverter = new UnicodeEncoding();
//Create byte arrays to hold original, encrypted, and decrypted data.
byte[] dataToEncrypt =
ByteConverter.GetBytes(toEncryptString);
byte[] encryptedData;
byte[] decryptedData;
//Create a new instance of RSACryptoServiceProvider to generate
//public and private key data.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
RSA.FromXmlString(privateKey);
//Pass the data to ENCRYPT, the public key information
//(using RSACryptoServiceProvider.ExportParameters(false),
//and a boolean flag specifying no OAEP padding.
encryptedData = RSAEncrypt(
dataToEncrypt, RSA.ExportParameters(false), false);
string base64code = Convert.ToBase64String(encryptedData);
return base64code;
}
catch (Exception exc)
{
//Catch this exception in case the encryption did
//not succeed.
//Exceptions.LogException(exc);
Console.WriteLine(exc.Message);
return "";
}
}
static private byte[] RSAEncrypt(
byte[] DataToEncrypt,
RSAParameters RSAKeyInfo,
bool DoOAEPPadding)
{
try
{
//Create a new instance of RSACryptoServiceProvider.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Import the RSA Key information. This only needs
//toinclude the public key information.
RSA.ImportParameters(RSAKeyInfo);
//Encrypt the passed byte array and specify OAEP padding.
//OAEP padding is only available on Microsoft Windows XP or
//later.
return RSA.Encrypt(DataToEncrypt, DoOAEPPadding);
}
//Catch and display a CryptographicException
//to the console.
catch (CryptographicException e)
{
//Exceptions.LogException(e);
Console.WriteLine(e.Message);
return null;
}
}
static private byte[] RSADecrypt(
byte[] DataToDecrypt,
RSAParameters RSAKeyInfo,
bool DoOAEPPadding)
{
try
{
//Create a new instance of RSACryptoServiceProvider.
RSACryptoServiceProvider RSA = new RSACryptoServiceProvider();
//Import the RSA Key information. This needs
//to include the private key information.
RSA.ImportParameters(RSAKeyInfo);
//Decrypt the passed byte array and specify OAEP padding.
//OAEP padding is only available on Microsoft Windows XP or
//later.
return RSA.Decrypt(DataToDecrypt, DoOAEPPadding);
}
//Catch and display a CryptographicException
//to the console.
catch (CryptographicException e)
{
//Exceptions.LogException(e);
Console.WriteLine(e.Message);
return null;
}
}
}
}
测试代码：
static
void Main(
string[] args)
{
string encodeString = MyRSA.Encrypt( " 1234567 ");
Console.WriteLine(encodeString);
string decode = MyRSA.Decrypt(encodeString);
Console.WriteLine(decode);
Console.ReadLine();
}
{
string encodeString = MyRSA.Encrypt( " 1234567 ");
Console.WriteLine(encodeString);
string decode = MyRSA.Decrypt(encodeString);
Console.WriteLine(decode);
Console.ReadLine();
}