Various encryption algorithms

MD5:

 Private stringMD5 (stringsource) {StringBuilder SB=NewStringBuilder (); System.Security.Cryptography.MD5 MD5=System.Security.Cryptography.MD5.Create (); byte[] s =Md5.computehash (Encoding.UTF8.GetBytes (source));  for(inti =0; i < s.length; i++) {sb. Append (S[i]. ToString ("X2")); }            returnsb. ToString ().        ToLower (); }

HMAC_MD5:

    Private stringHMAC_MD5 (stringKeystringmessage) {System.Text.ASCIIEncoding encoding=NewSystem.Text.ASCIIEncoding (); byte[] Keybyte =encoding.            GetBytes (key); HMACMD5 HMACMD5=NewHMACMD5 (Keybyte); byte[] Messagebytes =encoding.            GetBytes (message); byte[] Hashmessage =Hmacmd5.computehash (messagebytes); stringRtnval =bytetostring (hashmessage); returnRtnval.tolower (); }        Private Static stringBytetostring (byte[] buff) {            stringSBinary ="";  for(inti =0; I < buff. Length; i++) {sbinary+ = Buff[i]. ToString ("X2"); }            return(sbinary); }

HMAC_SHA1 Encryption:

/// <summary>        ///HmacSHA1 mode for MACMACMAC signature/// </summary>        /// <param name= "text" >Encrypted Content</param>        /// <param name= "key" >Encrypt key</param>        /// <returns></returns>         Public stringHMACSHA1 (stringTextstringkey) {HMACSHA1 HMACSHA1=NewHMACSHA1 (); Hmacsha1. Key=Encoding.UTF8.GetBytes (key); byte[] DataBuffer =Encoding.UTF8.GetBytes (text); byte[] Hashbytes =Hmacsha1.computehash (DataBuffer); returnconvert.tobase64string (hashbytes); }

Various encryption algorithms