RSA加密解密

2015-12-20 04:42:39 访问(1400) 赞(0) 踩(0)



        #region RSA 的密钥产生

        /// <summary>
        /// RSA 的密钥产生 产生私钥 和公钥 
        /// </summary>
        /// <param name="xmlPrivateKeys"></param>
        /// <param name="xmlPublicKey"></param>
        public static void RSAKey(out string xmlPrivateKeys, out string xmlPublicKey)
        {
            System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();

            xmlPrivateKeys = rsa.ToXmlString(true);
            xmlPublicKey = rsa.ToXmlString(false);
        }

        #endregion 

        #region RSA的加密函数 string

        /// <summary>
        /// RSA的加密函数 string
        /// </summary>
        /// <param name="xmlPublicKey"></param>
        /// <param name="m_strEncryptString"></param>
        /// <param name="_encoding"></param>
        /// <returns></returns>
        public static string RSAEncrypt(string xmlPublicKey, string m_strEncryptString, System.Text.Encoding _encoding)
        {
            byte[] PlainTextBArray;
            byte[] CypherTextBArray;

            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();

            rsa.FromXmlString(xmlPublicKey);

            PlainTextBArray = _encoding.GetBytes(m_strEncryptString);

            CypherTextBArray = rsa.Encrypt(PlainTextBArray, false);

            return Convert.ToBase64String(CypherTextBArray);
        }


        #endregion RSA的加密函数 string

        #region RSA解密

        /// <summary>
        /// RSA解密
        /// </summary>
        /// <param name="xmlPrivateKey"></param>
        /// <param name="m_strDecryptString"></param>
        /// <returns></returns>
        public static string RSADecrypt(string xmlPrivateKey, string m_strDecryptString, System.Text.Encoding _encoding)
        {
            byte[] PlainTextBArray;
            byte[] DypherTextBArray;

            System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();

            rsa.FromXmlString(xmlPrivateKey);

            PlainTextBArray = Convert.FromBase64String(m_strDecryptString);

            DypherTextBArray = rsa.Decrypt(PlainTextBArray, false);

            return _encoding.GetString(DypherTextBArray);
        }

        #endregion RSA解密
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