unity工具类RSA加密和解密

/**************************
 * 文件名:UEncrypt.cs;
 * 文件描述:RSA加密 解密;
 * 创建日期:2016/05/29;
 * Author:ThisisGame;
 * Page:https://github.com/ThisisGame/UEncrypt.git
 ***************************/

using System.IO;
using System.Text;
using System.Security.Cryptography;
using System;

namespace ThisisGame.UEncrypt
{
    public class UEncrypt
    {
        public static string publicKey = "<RSAKeyValue><Modulus>khiBttRxPUUZ03zFaILBnYb1CoH2ZF28Oi0Be0uIXnvtfBDGGRlCQRdHoDNINf6Ta00GLYV9YEcCZHPfpzn9Eo/1fH2SPtoJNGznQzoGnyFN3RioaTY1Mpd27WxrJ/R3XAuwzz456/1szzkEfojwzFwOwaFzt4s6/bDj e5DAG0=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>";

        /// <summary>
        /// 生成RSA私钥 公钥
        /// </summary>
        /// <param name="privateKey"></param>
        /// <param name="publicKey"></param>
        public static void RSAGenerateKey(ref string privateKey, ref string publicKey)
        {
            try
            {
                RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                privateKey = rsa.ToXmlString(true);
                publicKey = rsa.ToXmlString(false);
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        #region RSA加密函数
        /// <summary>
        /// 用RSA公钥 加密(数组-->数组)
        /// </summary>
        /// <param name="data"></param>
        /// <param name="publicKey"></param>
        /// <returns></returns>
        public static byte[] RSAEncrypt(byte[] data, string publicKey)
        {
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(publicKey);

            byte[] encryptData = rsa.Encrypt(data, false);

            return encryptData;
        }
        //##############################################################################  
        //RSA 方式加密  
        //KEY必须是XML的形式,返回的是字符串  
        //该加密方式有长度限制的！ 
        //##############################################################################  

        /// <summary> 
        /// RSA的加密函数 
        /// </summary> 
        /// <param name="xmlPublicKey">公钥</param> 
        /// <param name="encryptString">待加密的字符串</param> 
        /// <returns></returns> 
        public static string RSAEncrypt(string xmlPublicKey, string encryptString)
        {
            try
            {
                byte[] PlainTextBArray;
                byte[] CypherTextBArray;
                string Result;
                System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                rsa.FromXmlString(xmlPublicKey);
                PlainTextBArray = (new UnicodeEncoding()).GetBytes(encryptString);//另两种种转换ByteConverter.GetBytes和Encoding.UTF8.GetBytes
                CypherTextBArray = rsa.Encrypt(PlainTextBArray, false);
                Result = Convert.ToBase64String(CypherTextBArray);
                return Result;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        /// <summary> 
        /// RSA的加密函数  
        /// </summary> 
        /// <param name="xmlPublicKey">公钥</param> 
        /// <param name="EncryptString">待加密的字节数组</param> 
        /// <returns></returns> 
        public static string RSAEncrypt(string xmlPublicKey, byte[] EncryptString)
        {
            try
            {
                byte[] CypherTextBArray;
                string Result;
                System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                rsa.FromXmlString(xmlPublicKey);
                CypherTextBArray = rsa.Encrypt(EncryptString, false);
                Result = Convert.ToBase64String(CypherTextBArray);
                return Result;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        #endregion
        #region RSA解密函数
        /// <summary>
        /// 用RSA私钥 解密
        /// </summary>
        /// <param name="data"></param>
        /// <param name="privateKey"></param>
        /// <returns></returns>
        public static byte[] RSADecrypt(byte[] data, string privateKey)
        {
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(privateKey);
            byte[] decryptData = rsa.Decrypt(data, false);
            return decryptData;
        }

        /// <summary> 
        /// RSA的解密函数 
        /// </summary> 
        /// <param name="xmlPrivateKey">私钥</param> 
        /// <param name="decryptString">待解密的字符串</param> 
        /// <returns></returns> 
        public static string RSADecrypt(string xmlPrivateKey, string decryptString)
        {
            try
            {
                byte[] PlainTextBArray;
                byte[] DypherTextBArray;
                string Result;
                System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                rsa.FromXmlString(xmlPrivateKey);
                PlainTextBArray = Convert.FromBase64String(decryptString);
                DypherTextBArray = rsa.Decrypt(PlainTextBArray, false);
                Result = (new UnicodeEncoding()).GetString(DypherTextBArray);
                return Result;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        }
        /// <summary> 
        /// RSA的解密函数  
        /// </summary> 
        /// <param name="xmlPrivateKey">私钥</param> 
        /// <param name="DecryptString">待解密的字节数组</param> 
        /// <returns></returns> 
        public static string RSADecrypt(string xmlPrivateKey, byte[] DecryptString)
        {
            try
            {
                byte[] DypherTextBArray;
                string Result;
                System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
                rsa.FromXmlString(xmlPrivateKey);
                DypherTextBArray = rsa.Decrypt(DecryptString, false);
                Result = (new UnicodeEncoding()).GetString(DypherTextBArray);
                return Result;
            }
            catch (Exception ex)
            {
                throw ex;
            }
        } 
        #endregion 
        /// <summary>
        /// DES加密
        /// </summary>
        /// <param name="data">源数据</param>
        /// <param name="desrgbKey"></param>
        /// <param name="desrgbIV"></param>
        /// <returns></returns>
        public static byte[] DESEncrypt(byte[] data, byte[] desrgbKey, byte[] desrgbIV)
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            MemoryStream memoryStream = new MemoryStream();
            CryptoStream cryptoStream = new CryptoStream(memoryStream, des.CreateEncryptor(desrgbKey, desrgbIV), CryptoStreamMode.Write);
            cryptoStream.Write(data, 0, data.Length);
            cryptoStream.FlushFinalBlock();
            return memoryStream.ToArray();
        }

        /// <summary>
        /// DES解密
        /// </summary>
        /// <param name="data">源数据</param>
        /// <param name="desrgbKey"></param>
        /// <param name="desrgbIV"></param>
        /// <returns></returns>
        public static byte[] DESDecrypt(byte[] data, byte[] desrgbKey, byte[] desrgbIV)
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            MemoryStream memoryStream = new MemoryStream();
            CryptoStream cryptoStream = new CryptoStream(memoryStream, des.CreateDecryptor(desrgbKey, desrgbIV), CryptoStreamMode.Write);
            cryptoStream.Write(data, 0, data.Length);
            cryptoStream.FlushFinalBlock();
            return memoryStream.ToArray();
        }
    }

}