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   源码介绍

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using Microsoft.Win32;
using System;
using System.Collections.Generic;
using System.IO;
using System.Security.Cryptography;
using System.Text;
using System.Management;
namespace EncryptHelper
{
    public sealed class EncryptUtils
    {
        #region Base64加密解密
        /// <summary>
        /// Base64加密
        /// </summary>
        /// <param name="input">需要加密的字符串</param>
        /// <returns></returns>
        public static string Base64Encrypt(string input)
        {
            return Base64Encrypt(input, new UTF8Encoding());
        }

        /// <summary>
        /// Base64加密
        /// </summary>
        /// <param name="input">需要加密的字符串</param>
        /// <param name="encode">字符编码</param>
        /// <returns></returns>
        public static string Base64Encrypt(string input, Encoding encode)
        {
            return Convert.ToBase64String(encode.GetBytes(input));
        }

        /// <summary>
        /// Base64解密
        /// </summary>
        /// <param name="input">需要解密的字符串</param>
        /// <returns></returns>
        public static string Base64Decrypt(string input)
        {
            return Base64Decrypt(input, new UTF8Encoding());
        }

        /// <summary>
        /// Base64解密
        /// </summary>
        /// <param name="input">需要解密的字符串</param>
        /// <param name="encode">字符的编码</param>
        /// <returns></returns>
        public static string Base64Decrypt(string input, Encoding encode)
        {
            return encode.GetString(Convert.FromBase64String(input));
        }
        #endregion

        #region DES加密解密
        /// <summary>
        /// DES加密
        /// </summary>
        /// <param name="data">加密数据</param>
        /// <param name="key">8位字符的密钥字符串</param>
        /// <param name="iv">8位字符的初始化向量字符串</param>
        /// <returns></returns>
        public static string DESEncrypt(string data, string key, string iv)
        {
            byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(key);
            byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(iv);

            DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
            int i = cryptoProvider.KeySize;
            MemoryStream ms = new MemoryStream();
            CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateEncryptor(byKey, byIV), CryptoStreamMode.Write);
            StreamWriter sw = new StreamWriter(cst);
            sw.Write(data);
            sw.Flush();
            cst.FlushFinalBlock();
            sw.Flush();
            return Convert.ToBase64String(ms.GetBuffer(), 0, (int)ms.Length);
        }

        /// <summary>
        /// DES解密
        /// </summary>
        /// <param name="data">解密数据</param>
        /// <param name="key">8位字符的密钥字符串(需要和加密时相同)</param>
        /// <param name="iv">8位字符的初始化向量字符串(需要和加密时相同)</param>
        /// <returns></returns>
        public static string DESDecrypt(string data, string key, string iv)
        {
            byte[] byKey = System.Text.ASCIIEncoding.ASCII.GetBytes(key);
            byte[] byIV = System.Text.ASCIIEncoding.ASCII.GetBytes(iv);

            byte[] byEnc;
            try
            {
                byEnc = Convert.FromBase64String(data);
            }
            catch
            {
                return null;
            }

            DESCryptoServiceProvider cryptoProvider = new DESCryptoServiceProvider();
            MemoryStream ms = new MemoryStream(byEnc);
            CryptoStream cst = new CryptoStream(ms, cryptoProvider.CreateDecryptor(byKey, byIV), CryptoStreamMode.Read);
            StreamReader sr = new StreamReader(cst);
            return sr.ReadToEnd();
        }
        #endregion

        #region MD5加密
        /// <summary>
        /// MD5加密
        /// </summary>
        /// <param name="input">需要加密的字符串</param>
        /// <returns></returns>
        public static string MD5Encrypt(string input)
        {
            return MD5Encrypt(input, new UTF8Encoding());
        }

        /// <summary>
        /// MD5加密
        /// </summary>
        /// <param name="input">需要加密的字符串</param>
        /// <param name="encode">字符的编码</param>
        /// <returns></returns>
        public static string MD5Encrypt(string input, Encoding encode)
        {
            MD5 md5 = new MD5CryptoServiceProvider();
            byte[] t = md5.ComputeHash(encode.GetBytes(input));
            StringBuilder sb = new StringBuilder(32);
            for (int i = 0; i < t.Length; i  )
                sb.Append(t[i].ToString("x").PadLeft(2, '0'));
            return sb.ToString();
        }

        /// <summary>
        /// MD5对文件流加密
        /// </summary>
        /// <param name="sr"></param>
        /// <returns></returns>
        public static string MD5Encrypt(Stream stream)
        {
            MD5 md5serv = MD5CryptoServiceProvider.Create();
            byte[] buffer = md5serv.ComputeHash(stream);
            StringBuilder sb = new StringBuilder();
            foreach (byte var in buffer)
                sb.Append(var.ToString("x2"));
            return sb.ToString();
        }

        /// <summary>
        /// MD5加密(返回16位加密串)
        /// </summary>
        /// <param name="input"></param>
        /// <param name="encode"></param>
        /// <returns></returns>
        public static string MD5Encrypt16(string input, Encoding encode)
        {
            MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();
            string result = BitConverter.ToString(md5.ComputeHash(encode.GetBytes(input)), 4, 8);
            result = result.Replace("-", "");
            return result;
        }
        #endregion

        #region 3DES 加密解密

        public static string DES3Encrypt(string data, string key)
        {
            TripleDESCryptoServiceProvider DES = new TripleDESCryptoServiceProvider();

            DES.Key = ASCIIEncoding.ASCII.GetBytes(key);
            DES.Mode = CipherMode.ECB;
            DES.Padding = PaddingMode.PKCS7;

            ICryptoTransform DESEncrypt = DES.CreateEncryptor();

            byte[] Buffer = ASCIIEncoding.ASCII.GetBytes(data);
            return Convert.ToBase64String(DESEncrypt.TransformFinalBlock(Buffer, 0, Buffer.Length));
        }

        public static string DES3Decrypt(string data, string key)
        {
            TripleDESCryptoServiceProvider DES = new TripleDESCryptoServiceProvider();

            DES.Key = ASCIIEncoding.ASCII.GetBytes(key);
            DES.Mode = CipherMode.CBC;
            DES.Padding = System.Security.Cryptography.PaddingMode.PKCS7;

            ICryptoTransform DESDecrypt = DES.CreateDecryptor();

            string result = "";
            try
            {
                byte[] Buffer = Convert.FromBase64String(data);
                result = ASCIIEncoding.ASCII.GetString(DESDecrypt.TransformFinalBlock(Buffer, 0, Buffer.Length));
            }
            catch (Exception e)
            {

            }
            return result;
        }


        #endregion

        /// <summary>
        /// RSA加密
        /// </summary>
        /// <param name="publickey"></param>
        /// <param name="content"></param>
        /// <returns></returns>
        public static string RSAEncrypt(string publickey, string content)
        {
            publickey = @"<RSAKeyValue><Modulus>"   publickey   "</Modulus><Exponent>"   content   "</Exponent></RSAKeyValue>";
            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            byte[] cipherbytes;
            rsa.FromXmlString(publickey);
            cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false);
            return Convert.ToBase64String(cipherbytes);
        }

        /// <summary>
        /// RSA解密
        /// </summary>
        /// <param name="privatekey"></param>
        /// <param name="content"></param>
        /// <returns></returns>
        public static string RSADecrypt(string privatekey, string content)
        {
            privatekey = @"<RSAKeyValue><Modulus>"   privatekey   "</Modulus><Exponent>"   content   "</Exponent> </RSAKeyValue>";

            RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
            byte[] cipherbytes;
            rsa.FromXmlString(privatekey);
            cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false);

            return Encoding.UTF8.GetString(cipherbytes);
        }




        /// <summary>
        /// 生成公私钥
        /// </summary>
        /// <param name="PrivateKeyPath"></param>
        /// <param name="PublicKeyPath"></param>
        public static void RSAKey(string PrivateKeyPath, string PublicKeyPath)
        {
            try
            {
                RSACryptoServiceProvider provider = new RSACryptoServiceProvider();
                CreatePrivateKeyXML(PrivateKeyPath, provider.ToXmlString(true));
                CreatePublicKeyXML(PublicKeyPath, provider.ToXmlString(false));
            }
            catch (Exception exception)
            {
                throw exception;
            }
        }
        /// <summary>
        /// 对原始数据进行MD5加密
        /// </summary>
        /// <param name="m_strSource">待加密数据</param>
        /// <returns>返回机密后的数据</returns>
        public static string GetHash(string m_strSource)
        {
            HashAlgorithm algorithm = HashAlgorithm.Create("MD5");
            byte[] bytes = Encoding.GetEncoding("GB2312").GetBytes(m_strSource);
            byte[] inArray = algorithm.ComputeHash(bytes);
            return Convert.ToBase64String(inArray);
        }

        /// <summary>
        /// 对MD5加密后的密文进行签名
        /// </summary>
        /// <param name="p_strKeyPrivate">私钥</param>
        /// <param name="m_strHashbyteSignature">MD5加密后的密文</param>
        /// <returns></returns>
        public static string SignatureFormatter(string p_strKeyPrivate, string m_strHashbyteSignature)
        {
            byte[] rgbHash = Convert.FromBase64String(m_strHashbyteSignature);
            RSACryptoServiceProvider key = new RSACryptoServiceProvider();
            key.FromXmlString(p_strKeyPrivate);
            RSAPKCS1SignatureFormatter formatter = new RSAPKCS1SignatureFormatter(key);
            formatter.SetHashAlgorithm("MD5");
            byte[] inArray = formatter.CreateSignature(rgbHash);
            return Convert.ToBase64String(inArray);
        }
        /// <summary>
        /// 签名验证
        /// </summary>
        /// <param name="p_strKeyPublic">公钥</param>
        /// <param name="p_strHashbyteDeformatter">待验证的用户名</param>
        /// <param name="p_strDeformatterData">注册码</param>
        /// <returns></returns>
        public static bool SignatureDeformatter(string p_strKeyPublic, string p_strHashbyteDeformatter, string p_strDeformatterData)
        {
            try
            {
                byte[] rgbHash = Convert.FromBase64String(p_strHashbyteDeformatter);
                RSACryptoServiceProvider key = new RSACryptoServiceProvider();
                key.FromXmlString(p_strKeyPublic);
                RSAPKCS1SignatureDeformatter deformatter = new RSAPKCS1SignatureDeformatter(key);
                deformatter.SetHashAlgorithm("MD5");
                byte[] rgbSignature = Convert.FromBase64String(p_strDeformatterData);
                if (deformatter.VerifySignature(rgbHash, rgbSignature))
                {
                    return true;
                }
                return false;
            }
            catch
            {
                return false;
            }
        }
        /// <summary>
        /// 获取硬盘ID
        /// </summary>
        /// <returns>硬盘ID</returns>
        public static string GetHardID()
        {
            string HDInfo = "";
            ManagementClass cimobject1 = new ManagementClass("Win32_DiskDrive");
            ManagementObjectCollection moc1 = cimobject1.GetInstances();
            foreach (ManagementObject mo in moc1)
            {
                HDInfo = (string)mo.Properties["Model"].Value;
            }
            return HDInfo;
        }
        /// <summary>
        /// 读注册表中指定键的值
        /// </summary>
        /// <param name="key">键名</param>
        /// <returns>返回键值</returns>
        private static string ReadReg(string key)
        {
            string temp = "";
            try
            {
                RegistryKey myKey = Registry.LocalMachine;
                RegistryKey subKey = myKey.OpenSubKey(@"SOFTWARE/JX/Register");

                temp = subKey.GetValue(key).ToString();
                subKey.Close();
                myKey.Close();
                return temp;
            }
            catch (Exception)
            {
                throw;//可能没有此注册项;
            }

        }
        /// <summary>
        /// 创建注册表中指定的键和值
        /// </summary>
        /// <param name="key">键名</param>
        /// <param name="value">键值</param>
        private static void WriteReg(string key, string value)
        {
            try
            {
                RegistryKey rootKey = Registry.LocalMachine.CreateSubKey(@"SOFTWARE/JX/Register");
                rootKey.SetValue(key, value);
                rootKey.Close();
            }
            catch (Exception)
            {
                throw;
            }
        }
        /// <summary>
        /// 创建公钥文件
        /// </summary>
        /// <param name="path"></param>
        /// <param name="publickey"></param>
        public static void CreatePublicKeyXML(string path, string publickey)
        {
            try
            {
                FileStream publickeyxml = new FileStream(path, FileMode.Create);
                StreamWriter sw = new StreamWriter(publickeyxml);
                sw.WriteLine(publickey);
                sw.Close();
                publickeyxml.Close();
            }
            catch
            {
                throw;
            }
        }
        /// <summary>
        /// 创建私钥文件
        /// </summary>
        /// <param name="path"></param>
        /// <param name="privatekey"></param>
        public static void CreatePrivateKeyXML(string path, string privatekey)
        {
            try
            {
                FileStream privatekeyxml = new FileStream(path, FileMode.Create);
                StreamWriter sw = new StreamWriter(privatekeyxml);
                sw.WriteLine(privatekey);
                sw.Close();
                privatekeyxml.Close();
            }
            catch
            {
                throw;
            }
        }
        /// <summary>
        /// 读取公钥
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public static string ReadPublicKey(string path)
        {
            StreamReader reader = new StreamReader(path);
            string publickey = reader.ReadToEnd();
            reader.Close();
            return publickey;
        }
        /// <summary>
        /// 读取私钥
        /// </summary>
        /// <param name="path"></param>
        /// <returns></returns>
        public static string ReadPrivateKey(string path)
        {
            StreamReader reader = new StreamReader(path);
            string privatekey = reader.ReadToEnd();
            reader.Close();
            return privatekey;
        }
        /// <summary>
        /// 初始化注册表，程序运行时调用，在调用之前更新公钥xml
        /// </summary>
        /// <param name="path">公钥路径</param>
        public static void InitialReg(string path)
        {
            Registry.LocalMachine.CreateSubKey(@"SOFTWARE/JX/Register");
            Random ra = new Random();
            string publickey = ReadPublicKey(path);
            if (Registry.LocalMachine.OpenSubKey(@"SOFTWARE/JX/Register").ValueCount <= 0)
            {
                WriteReg("RegisterRandom", ra.Next(1, 100000).ToString());
                WriteReg("RegisterPublicKey", publickey);
            }
            else
            {
                WriteReg("RegisterPublicKey", publickey);
            }
        }


    }
}