C#中常用的加密类

哈希加密：
 
MD5:
byte[] data = new byte[DATA_SIZE];
 
// This is one implementation of the abstract class MD5.
MD5 md5 = new MD5CryptoServiceProvider();
 
byte[] result = md5.ComputeHash(data);
 
 
SHA1:
byte[] data = new byte[DATA_SIZE];
byte[] result;
 
SHA1 sha = new SHA1CryptoServiceProvider();
// This is one implementation of the abstract class SHA1.
result = sha.ComputeHash(data);
 
 
 
可逆加密算法：
 
DES:
private static void EncryptData(String inName, String outName, byte[] desKey, byte[] desIV)
 {   
     //Create the file streams to handle the input and output files.
     FileStream fin = new FileStream(inName, FileMode.Open, FileAccess.Read);
     FileStream fout = new FileStream(outName, FileMode.OpenOrCreate, FileAccess.Write);
     fout.SetLength(0);
      
     //Create variables to help with read and write.
     byte[] bin = new byte[100]; //This is intermediate storage for the encryption.
     long rdlen = 0;              //This is the total number of bytes written.
     long totlen = fin.Length;    //This is the total length of the input file.
     int len;                     //This is the number of bytes to be written at a time.
 
     DES des = new DESCryptoServiceProvider();         
     CryptoStream encStream = new CryptoStream(fout, des.CreateEncryptor(desKey, desIV), CryptoStreamMode.Write);
               
    www.zzzyk.com Console.WriteLine("Encrypting");
 
     //Read from the input file, then encrypt and write to the output file.
     while(rdlen < totlen)
     {
         len = fin.Read(bin, 0, 100);
         encStream.Write(bin, 0, len);
         rdlen = rdlen + len;
         Console.WriteLine("{0} bytes processed", rdlen);
     }
 
     encStream.Close(); 
     fout.Close();
     fin.Close();                  
 }
 
 
汇总一下，以便查阅。

补充：综合编程 , 安全编程 ,