MD5 encryption Tool Class

MD5 encryption Tool Class:

package cn.sniper.encrypt.util;import java.io.unsupportedencodingexception;import  java.security.messagedigest;import java.security.nosuchalgorithmexception;/** *  Cryptographic Tools Class  * The length of the &NBSP;&NBSP;*&NBSP;MD5 encryption is 32 bits  *  * sha the length of the encryption is 40 bits  *  *  @author  sniper *  */public class EncryptUtil {         /**     *  Encryption      *       *  @param  inputText     *  @return       */    public static string e (String inputtext)  {  &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;RETURN&NBSP;MD5 (Inputtext);    }     /**     *  two times encryption, should not be able to crack it?      *      *  @param  inputtext     *  @return      */     Public static string md5andsha (String inputtext)  {         return sha (MD5 (inputtext));    }    /**  &NBSP;&NBSP;&NBSP;&NBSP;*&NBSP;MD5 Encryption      *      *  @param  inputText     *  @return      */   &NBSP;&NBSP;PUBLIC&NBSP;STATIC&NBSP;STRING&NBSP;MD5 (String inputtext)  {         return encrypt (inputtext,  "MD5");    }     /**     * sha Encryption      *       *  @param  inputText     *  @return       */   &nbsP;public static string sha (String inputtext)  {         return encrypt (inputtext,  "Sha-1");     }    /** &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;*&NBSP;MD5 or Sha-1 encryption      *       *  @param  inputText     *              content to encrypt      *  @param  algorithmName      *             Encryption Algorithm name: MD5 or SHA-1, Case insensitive      *  @return      */     Private static string encrypt (String inputtext, string algorithmname)  {         if  (inputtext == null | |   ". Equals (Inputtext.trim ())) &NBSP;{&NBsp;           throw new  IllegalArgumentException ("Please enter what you want to encrypt");        }         if  (algorithmname == null | |   ". Equals (Algorithmname.trim ()))  {             algorithmName =  "MD5";        }         String encryptText = null;         try {             Messagedigest m = messagedigest.getinstance (Algorithmname);             m.update (Inputtext.getbytes ("UTF8"));             byte s[] = m.digest ();    &Nbsp;        // m.digest (Inputtext.getbytes ("UTF8"));             return hex (s);         } catch  (nosuchalgorithmexception e)  {             e.printstacktrace ();         } catch  (unsupportedencodingexception e)  {             e.printstacktrace ();        }         return encrypttext;    }    / **     *  returns a hexadecimal string      *       *  @param  arr     *  @return      */     priVate static string hex (Byte[] arr)  {         Stringbuffer sb = new stringbuffer ();         for   (int i = 0; i < arr.length; ++i)  {             sb.append (integer.tohexstring (Arr[i] & 0xFF)  | 0x100). substring (1, 3));        }         return sb.tostring ();    }         /**     *  Testing      *       *  @param  args     */    public  static void main (String[] args)  {        // &NBSP;MD5 Encryption Test &NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;&NBSP;STRING&NBSP;MD5_1&NBSP;=&NBSP;MD5 ("222222");      &NBSP;&NBSP;&NBSP;STRING&NBSP;MD5_2&NBSP;=&NBSP;MD5 ("Xi Big");         System.out.println (md5_1 +  "\ n"  + md5_2);                 // sha Encryption Test          string sha_1 = sha ("123456");        string  Sha_2 = sha ("Xi");         system.out.println (sha_1 +   "\ n"  + sha_2);             }}

MD5 encryption Tool Class