C#自定義RSA加密解密及RSA簽名和驗證封裝類

pdkie 9年前發布 | 1K 次閱讀 C#
這個C#類自定義RSA加密解密及RSA簽名和驗證，包含了RSA加密、解密及簽名所需的相關函數，帶有詳細的注釋說明。
using System;
using System.Text;
using System.Security.Cryptography;
namespace DotNet.Utilities
{
    /// <summary>
    /// RSA加密解密及RSA簽名和驗證
    /// </summary>
    public class RSACryption
    {

        public RSACryption()
        {

        }

    #region RSA 加密解密

    #region RSA 的密鑰產生

    /// <summary>
    /// RSA 的密鑰產生 產生私鑰 和公鑰
    /// </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的加密函數
    //##############################################################################
    //RSA 方式加密
    //說明KEY必須是XML的行式,返回的是字符串
    //在有一點需要說明！！該加密方式有 長度 限制的！！
    //##############################################################################

    //RSA的加密函數  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的加密函數 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的解密函數
    //RSA的解密函數  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的解密函數  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數字簽名

    #region 獲取Hash描述表
    //獲取Hash描述表 ，sharejs.com
    public bool GetHash(string m_strSource, ref byte[] HashData)
    {          
        //從字符串中取得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;           
    }

    //獲取Hash描述表
    public bool GetHash(string m_strSource, ref string strHashData)
    {

        //從字符串中取得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;

    }

    //獲取Hash描述表
    public bool GetHash(System.IO.FileStream objFile, ref byte[] HashData)
    {

        //從文件中取得Hash描述
        System.Security.Cryptography.HashAlgorithm MD5 = System.Security.Cryptography.HashAlgorithm.Create("MD5");
        HashData = MD5.ComputeHash(objFile);
        objFile.Close();

        return true;

    }

    //獲取Hash描述表
    public bool GetHash(System.IO.FileStream objFile, ref string strHashData)
    {

        //從文件中取得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簽名
    //RSA簽名
    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);
            //設置簽名的算法為MD5
            RSAFormatter.SetHashAlgorithm("MD5");
            //執行簽名
            EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);

            return true;

    }

    //RSA簽名
    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);
            //設置簽名的算法為MD5
            RSAFormatter.SetHashAlgorithm("MD5");
            //執行簽名
            EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);

            m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData);

            return true;

    }

    //RSA簽名
    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);
            //設置簽名的算法為MD5
            RSAFormatter.SetHashAlgorithm("MD5");
            //執行簽名
            EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);

            return true;

    }

    //RSA簽名
    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);
            //設置簽名的算法為MD5
            RSAFormatter.SetHashAlgorithm("MD5");
            //執行簽名
            EncryptedSignatureData = RSAFormatter.CreateSignature(HashbyteSignature);

            m_strEncryptedSignatureData = Convert.ToBase64String(EncryptedSignatureData);

            return true;

    }
    #endregion

    #region RSA 簽名驗證

    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);
            //指定解密的時候HASH算法為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);
            //指定解密的時候HASH算法為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);
            //指定解密的時候HASH算法為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);
            //指定解密的時候HASH算法為MD5
            RSADeformatter.SetHashAlgorithm("MD5");

            DeformatterData =Convert.FromBase64String(p_strDeformatterData);

            if(RSADeformatter.VerifySignature(HashbyteDeformatter,DeformatterData))
            {
                return true;
            }
            else
            {
                return false;
            }

    }


    #endregion


    #endregion

}

} </pre>
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C#自定義RSA加密解密及RSA簽名和驗證封裝類

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