C# 加密解密

来源:http://www.cnblogs.com/Liyuting/archive/2017/06/21/7058542.html
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using System; using System.Security.Cryptography; using System.Text; namespace DotNet.Utilities { /// <summary> /// Encrypt 的摘要說明。 /// </summary> publ ...


using System;
using System.Security.Cryptography;  
using System.Text;
namespace DotNet.Utilities
{
    /// <summary>
    /// Encrypt 的摘要說明。
    /// </summary>
    public class DEncrypt
    {
        /// <summary>
        /// 構造方法
        /// </summary>
        public DEncrypt()
        {
        }    

        #region 使用 預設密鑰字元串 加密/解密string

        /// <summary>
        /// 使用預設密鑰字元串加密string
        /// </summary>
        /// <param name="original">明文</param>
        /// <returns>密文</returns>
        public static string Encrypt(string original)
        {
            return Encrypt(original,"MATICSOFT");
        }
        /// <summary>
        /// 使用預設密鑰字元串解密string
        /// </summary>
        /// <param name="original">密文</param>
        /// <returns>明文</returns>
        public static string Decrypt(string original)
        {
            return Decrypt(original,"MATICSOFT",System.Text.Encoding.Default);
        }

        #endregion

        #region 使用 給定密鑰字元串 加密/解密string
        /// <summary>
        /// 使用給定密鑰字元串加密string
        /// </summary>
        /// <param name="original">原始文字</param>
        /// <param name="key">密鑰</param>
        /// <param name="encoding">字元編碼方案</param>
        /// <returns>密文</returns>
        public static string Encrypt(string original, string key)  
        {  
            byte[] buff = System.Text.Encoding.Default.GetBytes(original);  
            byte[] kb = System.Text.Encoding.Default.GetBytes(key);
            return Convert.ToBase64String(Encrypt(buff,kb));      
        }
        /// <summary>
        /// 使用給定密鑰字元串解密string
        /// </summary>
        /// <param name="original">密文</param>
        /// <param name="key">密鑰</param>
        /// <returns>明文</returns>
        public static string Decrypt(string original, string key)
        {
            return Decrypt(original,key,System.Text.Encoding.Default);
        }

        /// <summary>
        /// 使用給定密鑰字元串解密string,返回指定編碼方式明文
        /// </summary>
        /// <param name="encrypted">密文</param>
        /// <param name="key">密鑰</param>
        /// <param name="encoding">字元編碼方案</param>
        /// <returns>明文</returns>
        public static string Decrypt(string encrypted, string key,Encoding encoding)  
        {       
            byte[] buff = Convert.FromBase64String(encrypted);  
            byte[] kb = System.Text.Encoding.Default.GetBytes(key);
            return encoding.GetString(Decrypt(buff,kb));      
        }  
        #endregion

        #region 使用 預設密鑰字元串 加密/解密/byte[]
        /// <summary>
        /// 使用預設密鑰字元串解密byte[]
        /// </summary>
        /// <param name="encrypted">密文</param>
        /// <param name="key">密鑰</param>
        /// <returns>明文</returns>
        public static byte[] Decrypt(byte[] encrypted)  
        {  
            byte[] key = System.Text.Encoding.Default.GetBytes("MATICSOFT"); 
            return Decrypt(encrypted,key);     
        }
        /// <summary>
        /// 使用預設密鑰字元串加密
        /// </summary>
        /// <param name="original">原始數據</param>
        /// <param name="key">密鑰</param>
        /// <returns>密文</returns>
        public static byte[] Encrypt(byte[] original)  
        {  
            byte[] key = System.Text.Encoding.Default.GetBytes("MATICSOFT"); 
            return Encrypt(original,key);     
        }  
        #endregion

        #region  使用 給定密鑰 加密/解密/byte[]

        /// <summary>
        /// 生成MD5摘要
        /// </summary>
        /// <param name="original">數據源</param>
        /// <returns>摘要</returns>
        public static byte[] MakeMD5(byte[] original)
        {
            MD5CryptoServiceProvider hashmd5 = new MD5CryptoServiceProvider();   
            byte[] keyhash = hashmd5.ComputeHash(original);       
            hashmd5 = null;  
            return keyhash;
        }


        /// <summary>
        /// 使用給定密鑰加密
        /// </summary>
        /// <param name="original">明文</param>
        /// <param name="key">密鑰</param>
        /// <returns>密文</returns>
        public static byte[] Encrypt(byte[] original, byte[] key)  
        {  
            TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider();       
            des.Key =  MakeMD5(key);
            des.Mode = CipherMode.ECB;  
     
            return des.CreateEncryptor().TransformFinalBlock(original, 0, original.Length);     
        }  

        /// <summary>
        /// 使用給定密鑰解密數據
        /// </summary>
        /// <param name="encrypted">密文</param>
        /// <param name="key">密鑰</param>
        /// <returns>明文</returns>
        public static byte[] Decrypt(byte[] encrypted, byte[] key)  
        {  
            TripleDESCryptoServiceProvider des = new TripleDESCryptoServiceProvider();  
            des.Key =  MakeMD5(key);    
            des.Mode = CipherMode.ECB;  

            return des.CreateDecryptor().TransformFinalBlock(encrypted, 0, encrypted.Length);
        }  
  
        #endregion
        
    }
}
DEncrypt

 

using System;
using System.Security.Cryptography;  
using System.Text;
namespace DotNet.Utilities
{
    /// <summary>
    /// DES加密/解密類。
    /// </summary>
    public class DESEncrypt
    {
        public DESEncrypt()
        {            
        }

        #region ========加密======== 
 
        /// <summary>
        /// 加密
        /// </summary>
        /// <param name="Text"></param>
        /// <returns></returns>
        public static string Encrypt(string Text) 
        {
            return Encrypt(Text,"MATICSOFT");
        }
        /// <summary> 
        /// 加密數據 
        /// </summary> 
        /// <param name="Text"></param> 
        /// <param name="sKey"></param> 
        /// <returns></returns> 
        public static string Encrypt(string Text,string sKey) 
        { 
            DESCryptoServiceProvider des = new DESCryptoServiceProvider(); 
            byte[] inputByteArray; 
            inputByteArray=Encoding.Default.GetBytes(Text); 
            des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); 
            des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); 
            System.IO.MemoryStream ms=new System.IO.MemoryStream(); 
            CryptoStream cs=new CryptoStream(ms,des.CreateEncryptor(),CryptoStreamMode.Write); 
            cs.Write(inputByteArray,0,inputByteArray.Length); 
            cs.FlushFinalBlock(); 
            StringBuilder ret=new StringBuilder(); 
            foreach( byte b in ms.ToArray()) 
            { 
                ret.AppendFormat("{0:X2}",b); 
            } 
            return ret.ToString(); 
        } 

        #endregion
        
        #region ========解密======== 
   
 
        /// <summary>
        /// 解密
        /// </summary>
        /// <param name="Text"></param>
        /// <returns></returns>
        public static string Decrypt(string Text) 
        {
            return Decrypt(Text,"MATICSOFT");
        }
        /// <summary> 
        /// 解密數據 
        /// </summary> 
        /// <param name="Text"></param> 
        /// <param name="sKey"></param> 
        /// <returns></returns> 
        public static string Decrypt(string Text,string sKey) 
        { 
            DESCryptoServiceProvider des = new DESCryptoServiceProvider(); 
            int len; 
            len=Text.Length/2; 
            byte[] inputByteArray = new byte[len]; 
            int x,i; 
            for(x=0;x<len;x++) 
            { 
                i = Convert.ToInt32(Text.Substring(x * 2, 2), 16); 
                inputByteArray[x]=(byte)i; 
            } 
            des.Key = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); 
            des.IV = ASCIIEncoding.ASCII.GetBytes(System.Web.Security.FormsAuthentication.HashPasswordForStoringInConfigFile(sKey, "md5").Substring(0, 8)); 
            System.IO.MemoryStream ms=new System.IO.MemoryStream(); 
            CryptoStream cs=new CryptoStream(ms,des.CreateDecryptor(),CryptoStreamMode.Write); 
            cs.Write(inputByteArray,0,inputByteArray.Length); 
            cs.FlushFinalBlock(); 
            return Encoding.Default.GetString(ms.ToArray()); 
        } 
 
        #endregion 


    }
}
DESEncrypt

 

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

namespace DotNet.Utilities
{
    /// <summary>
    /// 加密解密實用類。
    /// </summary>
    public class Encrypt
    {
        //密鑰
        private static byte[] arrDESKey = new byte[] {42, 16, 93, 156, 78, 4, 218, 32};
        private static byte[] arrDESIV = new byte[] {55, 103, 246, 79, 36, 99, 167, 3};

        /// <summary>
        /// 加密。
        /// </summary>
        /// <param name="m_Need_Encode_String"></param>
        /// <returns></returns>
        public static string Encode(string m_Need_Encode_String)
        {
            if (m_Need_Encode_String == null)
            {
                throw new Exception("Error: \n源字元串為空!!");
            }
            DESCryptoServiceProvider objDES = new DESCryptoServiceProvider();
            MemoryStream objMemoryStream = new MemoryStream();
            CryptoStream objCryptoStream = new CryptoStream(objMemoryStream,objDES.CreateEncryptor(arrDESKey,arrDESIV),CryptoStreamMode.Write);
            StreamWriter objStreamWriter = new StreamWriter(objCryptoStream);
            objStreamWriter.Write(m_Need_Encode_String);
            objStreamWriter.Flush();
            objCryptoStream.FlushFinalBlock();
            objMemoryStream.Flush();
            return Convert.ToBase64String(objMemoryStream.GetBuffer(), 0, (int)objMemoryStream.Length);
        }

        /// <summary>
        /// 解密。
        /// </summary>
        /// <param name="m_Need_Encode_String"></param>
        /// <returns></returns>
        public static string Decode(string m_Need_Encode_String)
        {
            if (m_Need_Encode_String == null)
            {
                throw new Exception("Error: \n源字元串為空!!");
            }
            DESCryptoServiceProvider objDES = new DESCryptoServiceProvider();
            byte[] arrInput = Convert.FromBase64String(m_Need_Encode_String);
            MemoryStream objMemoryStream = new MemoryStream(arrInput);
            CryptoStream objCryptoStream = new CryptoStream(objMemoryStream,objDES.CreateDecryptor(arrDESKey,arrDESIV),CryptoStreamMode.Read);
            StreamReader  objStreamReader  = new StreamReader(objCryptoStream);
            return objStreamReader.ReadToEnd();
        }

        /// <summary>
        /// md5
        /// </summary>
        /// <param name="encypStr"></param>
        /// <returns></returns>
        public static string Md5(string encypStr)
        {
            string retStr;
            MD5CryptoServiceProvider m5 = new MD5CryptoServiceProvider();
            byte[] inputBye;
            byte[] outputBye;
            inputBye = System.Text.Encoding.ASCII.GetBytes(encypStr);
            outputBye = m5.ComputeHash(inputBye);
            retStr = Convert.ToBase64String(outputBye);
            return (retStr);
        }
    }
}
Encrypt

 

using System;
using System.Text;
using System.Security.Cryptography;
namespace DotNet.Utilities
{
    /// <summary>
    /// 得到隨機安全碼(哈希加密)。
    /// </summary>
    public class HashEncode
    {
        public HashEncode()
        {
            //
            // TODO: 在此處添加構造函數邏輯
            //
        }
        /// <summary>
        /// 得到隨機哈希加密字元串
        /// </summary>
        /// <returns></returns>
        public static string GetSecurity()
        {            
            string Security = HashEncoding(GetRandomValue());        
            return Security;
        }
        /// <summary>
        /// 得到一個隨機數值
        /// </summary>
        /// <returns></returns>
        public static string GetRandomValue()
        {            
            Random Seed = new Random();
            string RandomVaule = Seed.Next(1, int.MaxValue).ToString();
            return RandomVaule;
        }
        /// <summary>
        /// 哈希加密一個字元串
        /// </summary>
        /// <param name="Security"></param>
        /// <returns></returns>
        public static string HashEncoding(string Security)
        {                        
            byte[] Value;
            UnicodeEncoding Code = new UnicodeEncoding();
            byte[] Message = Code.GetBytes(Security);
            SHA512Managed Arithmetic = new SHA512Managed();
            Value = Arithmetic.ComputeHash(Message);
            Security = "";
            foreach(byte o in Value)
            {
                Security += (int) o + "O";
            }
            return Security;
        }
    }
}
HashEncode

 

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

namespace DotNet.Utilities
{
    /// <summary>
    /// MySecurity(安全類) 的摘要說明。
    /// </summary>
    public class MySecurity
    {
        /// <summary>
        /// 初始化安全類
        /// </summary>
        public MySecurity()
        {
            ///預設密碼
            key = "0123456789";
        }
        private string key; //預設密鑰

        private byte[] sKey;
        private byte[] sIV;

        #region 加密字元串
        /// <summary>
        /// 加密字元串
        /// </summary>
        /// <param name="inputStr">輸入字元串</param>
        /// <param name="keyStr">密碼,可以為“”</param>
        /// <returns>輸出加密後字元串</returns>
        static public string SEncryptString(string inputStr, string keyStr)
        {
            MySecurity ws = new MySecurity();
            return ws.EncryptString(inputStr, keyStr);
        }
        /// <summary>
        /// 加密字元串
        /// </summary>
        /// <param name="inputStr">輸入字元串</param>
        /// <param name="keyStr">密碼,可以為“”</param>
        /// <returns>輸出加密後字元串</returns>
        public string EncryptString(string inputStr, string keyStr)
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            if (keyStr == "")
                keyStr = key;
            byte[] inputByteArray = Encoding.Default.GetBytes(inputStr);
            byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
            SHA1 ha = new SHA1Managed();
            byte[] hb = ha.ComputeHash(keyByteArray);
            sKey = new byte[8];
            sIV = new byte[8];
            for (int i = 0; i < 8; i++)
                sKey[i] = hb[i];
            for (int i = 8; i < 16; i++)
                sIV[i - 8] = hb[i];
            des.Key = sKey;
            des.IV = sIV;
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            StringBuilder ret = new StringBuilder();
            foreach (byte b in ms.ToArray())
            {
                ret.AppendFormat("{0:X2}", b);
            }
            cs.Close();
            ms.Close();
            return ret.ToString();
        }
        #endregion

        #region 加密字元串 密鑰為系統預設 0123456789
        /// <summary>
        /// 加密字元串 密鑰為系統預設
        /// </summary>
        /// <param name="inputStr">輸入字元串</param>
        /// <returns>輸出加密後字元串</returns>
        static public string SEncryptString(string inputStr)
        {
            MySecurity ws = new MySecurity();
            return ws.EncryptString(inputStr, "");
        }
        #endregion


        #region 加密文件
        /// <summary>
        /// 加密文件
        /// </summary>
        /// <param name="filePath">輸入文件路徑</param>
        /// <param name="savePath">加密後輸出文件路徑</param>
        /// <param name="keyStr">密碼,可以為“”</param>
        /// <returns></returns>  
        public bool EncryptFile(string filePath, string savePath, string keyStr)
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            if (keyStr == "")
                keyStr = key;
            FileStream fs = File.OpenRead(filePath);
            byte[] inputByteArray = new byte[fs.Length];
            fs.Read(inputByteArray, 0, (int)fs.Length);
            fs.Close();
            byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
            SHA1 ha = new SHA1Managed();
            byte[] hb = ha.ComputeHash(keyByteArray);
            sKey = new byte[8];
            sIV = new byte[8];
            for (int i = 0; i < 8; i++)
                sKey[i] = hb[i];
            for (int i = 8; i < 16; i++)
                sIV[i - 8] = hb[i];
            des.Key = sKey;
            des.IV = sIV;
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            fs = File.OpenWrite(savePath);
            foreach (byte b in ms.ToArray())
            {
                fs.WriteByte(b);
            }
            fs.Close();
            cs.Close();
            ms.Close();
            return true;
        }
        #endregion

        #region 解密字元串
        /// <summary>
        /// 解密字元串
        /// </summary>
        /// <param name="inputStr">要解密的字元串</param>
        /// <param name="keyStr">密鑰</param>
        /// <returns>解密後的結果</returns>
        static public string SDecryptString(string inputStr, string keyStr)
        {
            MySecurity ws = new MySecurity();
            return ws.DecryptString(inputStr, keyStr);
        }
        /// <summary>
        ///  解密字元串 密鑰為系統預設
        /// </summary>
        /// <param name="inputStr">要解密的字元串</param>
        /// <returns>解密後的結果</returns>
        static public string SDecryptString(string inputStr)
        {
            MySecurity ws = new MySecurity();
            return ws.DecryptString(inputStr, "");
        }
        /// <summary>
        /// 解密字元串
        /// </summary>
        /// <param name="inputStr">要解密的字元串</param>
        /// <param name="keyStr">密鑰</param>
        /// <returns>解密後的結果</returns>
        public string DecryptString(string inputStr, string keyStr)
        {
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            if (keyStr == "")
                keyStr = key;
            byte[] inputByteArray = new byte[inputStr.Length / 2];
            for (int x = 0; x < inputStr.Length / 2; x++)
            {
                int i = (Convert.ToInt32(inputStr.Substring(x * 2, 2), 16));
                inputByteArray[x] = (byte)i;
            }
            byte[] keyByteArray = Encoding.Default.GetBytes(keyStr);
            SHA1 ha = new SHA1Managed();
            byte[] hb = ha.ComputeHash(keyByteArray);
            sKey = new byte[8];
            sIV = new byte[8];
            for (int i = 0; i < 8; i++)
                sKey[i] = hb[i];
            for (int i = 8; i < 16; i++)
                sIV[i - 8] = hb[i];
            des.Key = sKey;
            des.IV = sIV;
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateDecryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray

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  • 1.前言 什麼是熱更新 游戲或者軟體更新時,無需重新下載客戶端進行安裝,而是在應用程式啟動的情況下,在內部進行資源或者代碼更新 Unity目前常用熱更新解決方案 HybridCLR,Xlua,ILRuntime等 Unity目前常用資源管理解決方案 AssetBundles,Addressable, ...
  • 本文章主要是在C# ASP.NET Core Web API框架實現向手機發送驗證碼簡訊功能。這裡我選擇是一個互億無線簡訊驗證碼平臺,其實像阿裡雲,騰訊雲上面也可以。 首先我們先去 互億無線 https://www.ihuyi.com/api/sms.html 去註冊一個賬號 註冊完成賬號後,它會送 ...
  • 通過以下方式可以高效,並保證數據同步的可靠性 1.API設計 使用RESTful設計,確保API端點明確,並使用適當的HTTP方法(如POST用於創建,PUT用於更新)。 設計清晰的請求和響應模型,以確保客戶端能夠理解預期格式。 2.數據驗證 在伺服器端進行嚴格的數據驗證,確保接收到的數據符合預期格 ...