Java uses messagedigest for MD5 encryption

MD5 encryption Tool Class:

package com.lijianbo.test;import java.security.messagedigest;import  java.security.nosuchalgorithmexception;import org.apache.commons.lang3.stringutils;/** *  MD5 cryptographic algorithms tools  *  @author  bbo * */public class MD5Utils {/* *  For added security, we added a string of random strings  */private static final string user_pwd_encp_prefix =   "LDHDSFHWRERHESLM";/** *  user password encryption  *  @param  beforeEncp *  @return  */ Public static string encode (FINAL&NBSP;STRING&NBSP;BEFOREENCP) {if (StringUtils.isBlank ( BEFOREENCP)) {RETURN&NBSP;BEFOREENCP;} RETURN&NBSP;ENCRYPTMD5 (USER_PWD_ENCP_PREFIX+BEFOREENCP);} /**&NBSP;*&NBSP;MD5 encryption  *  @param  strInput *  @return  */private static  STRING&NBSP;ENCRYPTMD5 (final string strinput)  {StringBuffer buf = null;try  {//  Get a MD5 converter (if you want to change the SHA1 parameter to "SHA1")   messagedigest md = messagedigest.getinstance ("MD5"); //  the input string into a byte array    md.update ( Strinput.getbytes ()); //  converts and returns the result, which is also a byte array containing 16 elements   byte b[] = md.digest ();//  new a stringbuffer, this is used to compose the result string (explanation: A byte is a eight-bit binary, that is, 2 hexadecimal characters (2 of 8 is equal to 16 of 2))   buf =  new stringbuffer (b.length * 2);//Traverse for  (int i = 0; i <  b.length; i++)  {if  (((int)  b[i] & 0xff)  < 0x10)  {  //(int)  b[i] & 0xff  converted to unsigned integer buf.append ("0");} Long.tohexstring (  unsigned long integer hexadecimal string representation of Buf.append (long.tohexstring ((int)  b[i] & 0xff));  }} catch  (Nosuchalgorithmexception ex)  {ex.printstacktrace ();} Return buf==null?null:buf.tostring ();  //returns the result of   after encryption}}

Call Mode:

String passwordmd5=md5utils.encode (password);

Generate a third-party secret key:

public static void Main (string[] args) {try {System.out.println (Md5utils.encode (" 168544234123234192.168.12.10disanfangmiyao123456789012345 "," GBK "). Length ());;} catch (Exception e) {//TODO auto-generated catch Blocke.printstacktrace ();}}

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Java uses messagedigest for MD5 encryption