WinFormTools/WinformGeneralDeveloperFrame.Commons/Encrypt/RSASecurityHelper.cs

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

namespace WinformGeneralDeveloperFrame.Commons
{
    /// <summary>
    /// <20>ǶԳƼ<D4B3><C6BC>ܡ<EFBFBD><DCA1><EFBFBD><EFBFBD>ܡ<EFBFBD><DCA1><EFBFBD>֤<EFBFBD><D6A4><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
    /// </summary>
    public class RSASecurityHelper
    {
        /// <summary>
        /// <20>ǶԳƼ<D4B3><C6BC><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ɵ<EFBFBD>˽Կ<CBBD>͹<EFBFBD>Կ 
        /// </summary>
        /// <param name="privateKey">˽Կ</param>
        /// <param name="publicKey"><3E><>Կ</param>
        public static void GenerateRSAKey(out string privateKey, out string publicKey)
        {
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            privateKey = rsa.ToXmlString(true);
            publicKey = rsa.ToXmlString(false);
        }
        
        #region <20>ǶԳ<C7B6><D4B3><EFBFBD><EFBFBD>ݼ<EFBFBD><DDBC>ܣ<EFBFBD><DCA3><EFBFBD>Կ<EFBFBD><D4BF><EFBFBD>ܣ<EFBFBD>

        /// <summary>
        /// <20>ǶԳƼ<D4B3><C6BC><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ݣ<EFBFBD><DDA3><EFBFBD><EFBFBD>ؼ<EFBFBD><D8BC>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        /// </summary>
        /// <param name="publicKey"><3E><>Կ</param>
        /// <param name="originalString"><3E><><EFBFBD><EFBFBD><EFBFBD>ܵ<EFBFBD><DCB5>ַ<EFBFBD><D6B7><EFBFBD></param>
        /// <returns><3E><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></returns>
        public static string RSAEncrypt(string publicKey, string originalString)
        {
            byte[] PlainTextBArray;
            byte[] CypherTextBArray;
            string Result;
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(publicKey);
            PlainTextBArray = (new UnicodeEncoding()).GetBytes(originalString);
            CypherTextBArray = rsa.Encrypt(PlainTextBArray, false);
            Result = Convert.ToBase64String(CypherTextBArray);
            return Result;
        }

        /// <summary>
        /// <20>ǶԳƼ<D4B3><C6BC><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD>飬<EFBFBD><E9A3AC><EFBFBD>ؼ<EFBFBD><D8BC>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        /// </summary>
        /// <param name="publicKey"><3E><>Կ</param>
        /// <param name="originalBytes"><3E><><EFBFBD><EFBFBD><EFBFBD>ܵ<EFBFBD><DCB5>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD><EFBFBD></param>
        /// <returns><3E><><EFBFBD>ؼ<EFBFBD><D8BC>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></returns>
        public static string RSAEncrypt(string publicKey, byte[] originalBytes)
        {
            byte[] CypherTextBArray;
            string Result;
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(publicKey);
            CypherTextBArray = rsa.Encrypt(originalBytes, false);
            Result = Convert.ToBase64String(CypherTextBArray);
            return Result;
        } 

        #endregion

        #region <20>ǶԳƽ<D4B3><C6BD>ܣ<EFBFBD>˽Կ<CBBD><D4BF><EFBFBD>ܣ<EFBFBD>

        /// <summary>
        /// <20>ǶԳƽ<D4B3><C6BD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ؽ<EFBFBD><D8BD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        /// </summary>
        /// <param name="privateKey">˽Կ</param>
        /// <param name="encryptedString"><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></param>
        /// <returns><3E><><EFBFBD>ؽ<EFBFBD><D8BD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></returns>
        public static string RSADecrypt(string privateKey, string encryptedString)
        {
            byte[] PlainTextBArray;
            byte[] DypherTextBArray;
            string Result;
            System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(privateKey);
            PlainTextBArray = Convert.FromBase64String(encryptedString);
            DypherTextBArray = rsa.Decrypt(PlainTextBArray, false);
            Result = (new UnicodeEncoding()).GetString(DypherTextBArray);
            return Result;
        }

        /// <summary>
        /// <20>ǶԳƽ<D4B3><C6BD><EFBFBD><EFBFBD>ֽ<EFBFBD><D6BD><EFBFBD><EFBFBD>飬<EFBFBD><E9A3AC><EFBFBD>ؽ<EFBFBD><D8BD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        /// </summary>
        /// <param name="privateKey">˽Կ</param>
        /// <param name="encryptedBytes"><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></param>
        /// <returns></returns>
        public static string RSADecrypt(string privateKey, byte[] encryptedBytes)
        {
            byte[] DypherTextBArray;
            string Result;
            System.Security.Cryptography.RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            rsa.FromXmlString(privateKey);
            DypherTextBArray = rsa.Decrypt(encryptedBytes, false);
            Result = (new UnicodeEncoding()).GetString(DypherTextBArray);
            return Result;
        } 
        #endregion

        #region <20>ǶԳƼ<D4B3><C6BC><EFBFBD>ǩ<EFBFBD><C7A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤

        /// <summary>
        /// ʹ<>÷ǶԳƼ<D4B3><C6BC><EFBFBD>ǩ<EFBFBD><C7A9><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
        /// </summary>
        /// <param name="privateKey">˽Կ</param>
        /// <param name="originalString"><3E><><EFBFBD><EFBFBD><EFBFBD>ܵ<EFBFBD><DCB5>ַ<EFBFBD><D6B7><EFBFBD></param>
        /// <returns><3E><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></returns>
        public static string RSAEncrypSignature(string privateKey, string originalString)
        {
            string signature;
            using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
            {
                rsa.FromXmlString(privateKey); //˽Կ
                // <20><><EFBFBD>ܶ<EFBFBD><DCB6><EFBFBD> 
                RSAPKCS1SignatureFormatter f = new RSAPKCS1SignatureFormatter(rsa);
                f.SetHashAlgorithm("SHA1");
                byte[] source = ASCIIEncoding.ASCII.GetBytes(originalString);
                SHA1Managed sha = new SHA1Managed();
                byte[] result = sha.ComputeHash(source);
                byte[] b = f.CreateSignature(result);
                signature = Convert.ToBase64String(b);
            }
            return signature;
        }
              
        /// <summary>
        /// <20><>˽Կ<CBBD><D4BF><EFBFBD><EFBFBD>ǩ<EFBFBD><C7A9><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ù<EFBFBD>Կ<EFBFBD><D4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤
        /// </summary>
        /// <param name="originalString">δ<><CEB4><EFBFBD>ܵ<EFBFBD><DCB5>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></param>
        /// <param name="encrytedString"><3E><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><D7A2><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD></param>
        /// <returns><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤<EFBFBD>ɹ<EFBFBD><C9B9><EFBFBD><EFBFBD><EFBFBD>True<75><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪFalse</returns>
        //public static bool Validate(string originalString, string encrytedString)
        //{
        //    return Validate(originalString, encrytedString, UIConstants.PublicKey);
        //}

        /// <summary>
        /// <20><>˽Կ<CBBD><D4BF><EFBFBD>ܵ<EFBFBD><DCB5>ַ<EFBFBD><D6B7><EFBFBD><EFBFBD><EFBFBD>ʹ<EFBFBD>ù<EFBFBD>Կ<EFBFBD><D4BF><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤
        /// </summary>
        /// <param name="originalString">δ<><CEB4><EFBFBD>ܵ<EFBFBD><DCB5>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></param>
        /// <param name="encrytedString"><3E><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD>ı<EFBFBD><C4B1><EFBFBD><EFBFBD><EFBFBD>ע<EFBFBD><D7A2><EFBFBD><EFBFBD><EFBFBD>к<EFBFBD></param>
        /// <param name="publicKey"><3E>ǶԳƼ<D4B3><C6BC>ܵĹ<DCB5>Կ</param>
        /// <returns><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD>֤<EFBFBD>ɹ<EFBFBD><C9B9><EFBFBD><EFBFBD><EFBFBD>True<75><65><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ΪFalse</returns>
        public static bool Validate(string originalString, string encrytedString, string publicKey)
        {
            bool bPassed = false;
            using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider())
            {
                try
                {
                    rsa.FromXmlString(publicKey); //<2F><>Կ
                    RSAPKCS1SignatureDeformatter formatter = new RSAPKCS1SignatureDeformatter(rsa);
                    formatter.SetHashAlgorithm("SHA1");

                    byte[] key = Convert.FromBase64String(encrytedString); //<2F><>֤
                    SHA1Managed sha = new SHA1Managed();
                    byte[] name = sha.ComputeHash(ASCIIEncoding.ASCII.GetBytes(originalString));
                    if (formatter.VerifySignature(name, key))
                    {
                        bPassed = true;
                    }
                }
                catch
                {
                }
            }
            return bPassed;
        }

        #endregion

        #region Hash <20><><EFBFBD><EFBFBD>

        /// <summary> Hash <20><><EFBFBD><EFBFBD> </summary>
        /// <param name="str2Hash"></param>
        /// <returns></returns>
        public static int HashEncrypt(string str2Hash)
        {
            const int salt = 100716;    // <20><>ֵ
            str2Hash += "Commons";       // <20><><EFBFBD><EFBFBD>һ<EFBFBD><D2BB><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ַ<EFBFBD><D6B7><EFBFBD>

            int len = str2Hash.Length;
            int result = (str2Hash[len - 1] - 31) * 95 + salt;
            for (int i = 0; i < len - 1; i++)
            {
                result = (result * 95) + (str2Hash[i] - 32);
            }

            return result;
        }

        /// <summary>
        /// MD5<44><35><EFBFBD><EFBFBD>
        /// </summary>
        /// <param name="str"><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD></param>
        /// <returns><3E><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD>ִ<EFBFBD></returns>
        public static string ComputeMD5(string str)
        {
            byte[] hashValue = ComputeMD5Data(str);
            return BitConverter.ToString(hashValue).Replace("-", "");
        }

        /// <summary>
        /// MD5<44><35><EFBFBD><EFBFBD>
        /// </summary>
        /// <param name="input"><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>ִ<EFBFBD></param>
        /// <returns><3E><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD>ִ<EFBFBD></returns>
        public static byte[] ComputeMD5Data(string input)
        {
            byte[] buffer = Encoding.UTF8.GetBytes(input);
            return MD5.Create().ComputeHash(buffer);
        }

        /// <summary>
        /// MD5<44><35><EFBFBD><EFBFBD>
        /// </summary>
        /// <param name="data"><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></param>
        /// <returns><3E><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD>ִ<EFBFBD></returns>
        public static byte[] ComputeMD5Data(byte[] data)
        {
            return MD5.Create().ComputeHash(data);
        }

        /// <summary>
        /// MD5<44><35><EFBFBD><EFBFBD>
        /// </summary>
        /// <param name="stream"><3E><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD></param>
        /// <returns><3E><><EFBFBD>ܺ<EFBFBD><DCBA><EFBFBD><EFBFBD>ִ<EFBFBD></returns>
        public static byte[] ComputeMD5Data(Stream stream)
        {
            return MD5.Create().ComputeHash(stream);
        }
        #endregion
    }
}