Brief introduction. All kinds of encryption and decryption algorithms under NET Framework

The article will continue to be revenue. NET encryption algorithms, these algorithms will adopt a policy model for unified management.

Using System;  
Using System.Collections.Generic;  
Using System.Text;  
      
Namespace Encryptanddecrypt  
{public  
   class Encryptanddecrythandler  
    {  
        Iencrytanddecrypt _ Encryptanddecrypt;  
        Public Encryptanddecrythandler (Iencrytanddecrypt iencrytanddecrypt)  
        {  
            _encryptanddecrypt = Iencrytanddecrypt;  
        }  
        public string Encrypt (string data)  
        {return  
            _encryptanddecrypt.encrypt (data);  
        }  
        public string Decrypt (string data)  
        {return  
            _encryptanddecrypt.decrypt (data);  
        }  
    }  
}

Cryptographic decryption of the caller

Using System;  
Using System.Collections.Generic;  
Using System.Text;  
      
Namespace Encryptanddecrypt  
{public  
    interface Iencrytanddecrypt  
    {  
       string Encrypt (string data);  
       String Decrypt (string data);  
    }  
}

Policy interface

 using System;  
Using System.Collections.Generic;  
Using System.Text;  
Using System.Security.Cryptography;  
      
Using System.IO; Namespace Encryptanddecrypt {public class Descrypt:iencrytanddecrypt {private byte[] Rgbkey = NE  
        W byte[] {1, 9, 8, 7, 0, 1, 0, 3};  
        Private byte[] Rgbiv = new byte[] {1, 9, 8, 7, 0, 1, 0, 3}; #region Iencrytanddecrypt member public string Encrypt (string data) {MemoryStream ms  
            Tream = new MemoryStream ();  
            DESCryptoServiceProvider Deskey = new DESCryptoServiceProvider (); CryptoStream cstream = new CryptoStream (Mstream, Deskey.  
            CreateEncryptor (RGBKEY,RGBIV), cryptostreammode.write);  
            StreamWriter sw = new StreamWriter (Cstream); Sw.  
            WriteLine (data); Sw.  
            Close (); Cstream.  
            Close (); byte[] bytes = Mstream.  
            ToArray (); Mstream.  
            Close (); Return convert.toBase64string (bytes);  
            public string Decrypt (string data) {string tmp;  
            MemoryStream mstream = new MemoryStream (convert.frombase64string (data));  
            DESCryptoServiceProvider Deskey = new DESCryptoServiceProvider (); CryptoStream cstream = new CryptoStream (Mstream, Deskey.  
            CreateDecryptor (Rgbkey, Rgbiv), cryptostreammode.read);  
            StreamReader sr = new StreamReader (cstream); TMP = Sr.  
            ReadLine (); Sr.  
            Close (); Cstream.  
            Close (); Mstream.  
            Close ();  
        return TMP; } #endregion}} 

DES encryption algorithm

 using System;  
Using System.Collections.Generic;  
Using System.Text;  
Using System.Security.Cryptography;  
      
Using System.IO;   
       Namespace Encryptanddecrypt {public class Tripledescrypt:iencrytanddecrypt {private byte[] rgbkey;  
       Private byte[] RGBIV;  
         Public Tripledescrypt () {Rgbkey = new byte[130];  
         RGBIV = new byte[130]; for (int i = 0; i < 130 i++) {Rgbkey[i] = rgbiv[i] = (byte) (New Random ().  
         Next (1, 255));  
        #region Iencrytanddecrypt member public string Encrypt (string data)  
                  
            {TripleDESCryptoServiceProvider tripledes=new tripledescryptoserviceprovider ();  
            MemoryStream mstream = new MemoryStream ();  
            CryptoStream cstream = new CryptoStream (Mstream, Tripledes.createencryptor (Rgbkey, Rgbiv), cryptostreammode.write); Streamwriter SW = new StreamWriter (Cstream); Sw.  
            WriteLine (data); Cstream.  
            Close (); Byte[] result = Mstream.  
            ToArray (); Mstream.  
            Close ();  
      
        return convert.tobase64string (Result);  public string Decrypt (string data) {TripleDESCryptoServiceProvider TripleDes =  
            New TripleDESCryptoServiceProvider ();  
            MemoryStream mstream = new MemoryStream (convert.frombase64string (data));  
            CryptoStream cstream = new CryptoStream (Mstream, Tripledes.createdecryptor (Rgbkey, Rgbiv), cryptostreammode.read);  
            StreamReader sr = new StreamReader (cstream); string result = Sr.  
            ReadLine (); Sr.  
            Close (); Cstream.  
            Close (); Mstream.  
            Close ();  
        return result; } #endregion}} 

TripleDES encryption algorithm