[DEncrypt] RSACryption--RSA加密/解密字符串 （转载）

点击下载 RSACryption.zip

这个类是关于加密，解密的操作，文件的一些高级操作
1.RSACryption RSA 的密钥产生
2.RSACryption RSA的加密函数
3.RSACryption RSA的解密函数
4.RSACryption 获取Hash描述表 
5.RSACryption RSA签名 
6.RSACryption RSA签名认证
看下面代码吧

/// <summary>
/// 类说明：Assistant
/// 编 码 人：苏飞
/// 联系方式：361983679  
/// 更新网站：[url=http://www.cckan.net/thread-655-1-1.html]http://www.cckan.net/thread-655-1-1.html[/url]
/// </summary>
using System; 
using System.Text; 
using System.Security.Cryptography;
namespace DotNet.Utilities
{ 
  /// <summary> 
  /// RSA加密解密及RSA签名和验证
  /// </summary> 
  public class RSACryption 
  {     
    public RSACryption() 
    {       
    } 
     
    #region RSA 加密解密 
 
    #region RSA 的密钥产生 
   
    /// <summary>
    /// RSA 的密钥产生 产生私钥 和公钥 
    /// </summary>
    /// <param name="xmlKeys"></param>
    /// <param name="xmlPublicKey"></param>
    public void RSAKey(out string xmlKeys,out string xmlPublicKey) 
    {       
        System.Security.Cryptography.RSACryptoServiceProvider rsa=new RSACryptoServiceProvider(); 
        xmlKeys=rsa.ToXmlString(true); 
        xmlPublicKey = rsa.ToXmlString(false);       
    } 
    #endregion 
 
    #region RSA的加密函数 
    //############################################################################## 
    //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  string
    public string RSAEncrypt(string xmlPublicKey,string m_strEncryptString ) 
    { 
       
      byte[] PlainTextBArray; 
      byte[] CypherTextBArray; 
      string Result; 
      RSACryptoServiceProvider rsa=new RSACryptoServiceProvider(); 
      rsa.FromXmlString(xmlPublicKey); 
      PlainTextBArray = (new UnicodeEncoding()).GetBytes(m_strEncryptString); 
      CypherTextBArray = rsa.Encrypt(PlainTextBArray, false); 
      Result=Convert.ToBase64String(CypherTextBArray); 
      return Result; 
       
    } 
    //RSA的加密函数 byte[]
    public string RSAEncrypt(string xmlPublicKey,byte[] EncryptString ) 
    { 
       
      byte[] CypherTextBArray; 
      string Result; 
      RSACryptoServiceProvider rsa=new RSACryptoServiceProvider(); 
      rsa.FromXmlString(xmlPublicKey); 
      CypherTextBArray = rsa.Encrypt(EncryptString, false); 
      Result=Convert.ToBase64String(CypherTextBArray); 
      return Result; 
       
    } 
    #endregion 
 
    #region RSA的解密函数 
    //RSA的解密函数  string
    public string RSADecrypt(string xmlPrivateKey, string m_strDecryptString ) 
    {      
      byte[] PlainTextBArray; 
      byte[] DypherTextBArray; 
      string Result; 
      System.Security.Cryptography.RSACryptoServiceProvider rsa=new RSACryptoServiceProvider(); 
      rsa.FromXmlString(xmlPrivateKey); 
      PlainTextBArray =Convert.FromBase64String(m_strDecryptString); 
      DypherTextBArray=rsa.Decrypt(PlainTextBArray, false); 
      Result=(new UnicodeEncoding()).GetString(DypherTextBArray); 
      return Result; 
       
    } 
 
    //RSA的解密函数  byte
    public string RSADecrypt(string xmlPrivateKey, byte[] DecryptString ) 
    {      
      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; 
       
    } 
    #endregion 
 
    #endregion 
 
    #region RSA数字签名 
 
    #region 获取Hash描述表 
    //获取Hash描述表 
    public bool GetHash(string m_strSource, ref byte[] HashData) 
    {       
      //从字符串中取得Hash描述 
      byte[] Buffer; 
      System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5"); 
      Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource); 
      HashData = MD5.ComputeHash(Buffer); 
 
      return true;       
    } 
 
    //获取Hash描述表 
    public bool GetHash(string m_strSource, ref string strHashData) 
    { 
       
      //从字符串中取得Hash描述 
      byte[] Buffer; 
      byte[] HashData; 
      System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5"); 
      Buffer = System.Text.Encoding.GetEncoding("GB2312").GetBytes(m_strSource); 
      HashData = MD5.ComputeHash(Buffer); 
 
      strHashData = Convert.ToBase64String(HashData); 
      return true; 
       
    } 
 
    //获取Hash描述表 
    public bool GetHash(System.IO.FileStream objFile, ref byte[] HashData) 
    { 
       
      //从文件中取得Hash描述 
      System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5"); 
      HashData = MD5.ComputeHash(objFile); 
      objFile.Close(); 
 
      return true; 
       
    } 
 
    //获取Hash描述表 
    public bool GetHash(System.IO.FileStream objFile, ref string strHashData) 
    { 
       
      //从文件中取得Hash描述 
      byte[] HashData; 
      System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5"); 
      HashData = MD5.ComputeHash(objFile); 
      objFile.Close(); 
 
      strHashData = Convert.ToBase64String(HashData); 
 
      return true; 
       
    } 
    #endregion 
 
    #region RSA签名 
    //RSA签名 
    public bool SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, ref byte[] EncryptedSignatureData) 
    { 
       
        System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); 
 
        RSA.FromXmlString(p_strKeyPrivate); 
        System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA); 
        //设置签名的算法为MD5 
        RSAFormatter.SetHashAlgorithm("MD5"); 
        //执行签名 
        EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); 
 
        return true; 
       
    } 
 
    //RSA签名 
    public bool SignatureFormatter(string p_strKeyPrivate, byte[] HashbyteSignature, ref string m_strEncryptedSignatureData) 
    { 
       
        byte[] EncryptedSignatureData; 
 
        System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); 
 
        RSA.FromXmlString(p_strKeyPrivate); 
        System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA); 
        //设置签名的算法为MD5 
        RSAFormatter.SetHashAlgorithm("MD5"); 
        //执行签名 
        EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); 
 
        m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData); 
 
        return true; 
       
    } 
 
    //RSA签名 
    public bool SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, ref byte[] EncryptedSignatureData) 
    { 
       
        byte[] HashbyteSignature; 
 
        HashbyteSignature = Convert.FromBase64String(m_strHashbyteSignature); 
        System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); 
 
        RSA.FromXmlString(p_strKeyPrivate); 
        System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA); 
        //设置签名的算法为MD5 
        RSAFormatter.SetHashAlgorithm("MD5"); 
        //执行签名 
        EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); 
 
        return true; 
       
    } 
 
    //RSA签名 
    public bool SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature, ref string m_strEncryptedSignatureData) 
    { 
       
        byte[] HashbyteSignature; 
        byte[] EncryptedSignatureData; 
 
        HashbyteSignature = Convert.FromBase64String(m_strHashbyteSignature); 
        System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); 
 
        RSA.FromXmlString(p_strKeyPrivate); 
        System.Security.Cryptography.RSAPKCS1SignatureFormatter RSAFormatter = new System.Security.Cryptography.RSAPKCS1SignatureFormatter(RSA); 
        //设置签名的算法为MD5 
        RSAFormatter.SetHashAlgorithm("MD5"); 
        //执行签名 
        EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature); 
 
        m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData); 
 
        return true; 
       
    } 
    #endregion 
 
    #region RSA 签名验证 
 
    public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, byte[] DeformatterData) 
    { 
       
        System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); 
 
        RSA.FromXmlString(p_strKeyPublic); 
        System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA); 
        //指定解密的时候HASH算法为MD5 
        RSADeformatter.SetHashAlgorithm("MD5"); 
 
        if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData)) 
        { 
          return true; 
        } 
        else
        { 
          return false; 
        } 
       
    } 
 
    public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, byte[] DeformatterData) 
    { 
       
        byte[] HashbyteDeformatter; 
 
        HashbyteDeformatter = Convert.FromBase64String(p_strHashbyteDeformatter); 
 
        System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); 
 
        RSA.FromXmlString(p_strKeyPublic); 
        System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA); 
        //指定解密的时候HASH算法为MD5 
        RSADeformatter.SetHashAlgorithm("MD5"); 
 
        if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData)) 
        { 
          return true; 
        } 
        else
        { 
          return false; 
        } 
       
    } 
 
    public bool SignatureDeformatter(string p_strKeyPublic, byte[] HashbyteDeformatter, string p_strDeformatterData) 
    { 
       
        byte[] DeformatterData; 
 
        System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); 
 
        RSA.FromXmlString(p_strKeyPublic); 
        System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA); 
        //指定解密的时候HASH算法为MD5 
        RSADeformatter.SetHashAlgorithm("MD5"); 
 
        DeformatterData =Convert.FromBase64String(p_strDeformatterData); 
 
        if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData)) 
        { 
          return true; 
        } 
        else
        { 
          return false; 
        } 
       
    } 
 
    public bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, string p_strDeformatterData) 
    { 
       
        byte[] DeformatterData; 
        byte[] HashbyteDeformatter; 
 
        HashbyteDeformatter = Convert.FromBase64String(p_strHashbyteDeformatter); 
        System.Security.Cryptography.RSACryptoServiceProvider RSA = new System.Security.Cryptography.RSACryptoServiceProvider(); 
 
        RSA.FromXmlString(p_strKeyPublic); 
        System.Security.Cryptography.RSAPKCS1SignatureDeformatter RSADeformatter = new System.Security.Cryptography.RSAPKCS1SignatureDeformatter(RSA); 
        //指定解密的时候HASH算法为MD5 
        RSADeformatter.SetHashAlgorithm("MD5"); 
 
        DeformatterData =Convert.FromBase64String(p_strDeformatterData); 
 
        if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData)) 
        { 
          return true; 
        } 
        else
        { 
          return false; 
        } 
       
    } 
 
 
    #endregion 
 
 
    #endregion 
 
  } 
}