function a()
{
var PublicKey="A5B55950369962C81804C0929C07776A671E505D746E0B2EA1EEE06762D4448E89342AD5725C1703F5146B
               37444751EF4BEB2D0803AE7D1787FA21486E3609761A29C1DB827B8DBBA5D9A8358B6F2C6A8FD942D3A0DE
               C064263094663EFEB799EB635CBC64EA72A9EE4EC1983520F4795502277B9A53A122D7BDA2CB98FC7FB1";

var RSA = new RSAKey();
RSA.setPublic(PublicKey, "10001");
var v = RSA.encrypt("aaa");
}    

using System.Security.Cryptography;

        /// <summary>
        /// RSA加密
        /// </summary>
        /// <param name="xmlPublicKey">公钥</param>
        /// <param name="m_strEncryptString">加密的数据</param>
        /// <returns>RSA公钥加密后的数据</returns>
        static public string RSAEncrypt(string xmlPublicKey, string m_strEncryptString)
        {
            string outstr = "";
            try
            {
                RSACryptoServiceProvider provider = new RSACryptoServiceProvider();
                provider.FromXmlString(xmlPublicKey);
                byte[] bytes;
                bytes = provider.Encrypt(Encoding.UTF8.GetBytes(m_strEncryptString), false);
                outstr = Convert.ToBase64String(bytes);
            }
            catch (Exception exception)
            {
                throw exception;
            }
            return outstr;
        }

------解决方案--------------------

参考下面的

C# code

using <mscorlib.dll>
using namespace System;
using namespace System::Security::Cryptography;
using namespace System::Text;

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)
    {
        Console::WriteLine(e->Message);

        return 0;
    }

}

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)
    {
        Console::WriteLine(e);

        return 0;
    }

}

int main()
{
    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(S"Data to Encrypt");
        Byte encryptedData[];
        Byte decryptedData[];