Java built-in base64 + md5 encryption using code, and specified characters md5 encryption code

Java built-in base64 + md5 encryption using code

Package org. rui. base64; import java. io. IOException; import sun. misc. BASE64Decoder; import sun. misc. BASE64Encoder; public class Base64 {/*** @ param args */public static void main (String [] args) {Base64 base = new Base64 (); string pass = "123"; String en = base. encode (pass); System. out. println (en); String de = base. decode (en); System. out. println (de);} // enter the password public String encode (String pass) {BASE64Encoder base = new BASE64Encoder (); pass = base. encode (pass. getBytes (); return pass;} // public String encode (byte [] B) {return encode (new String (B ));} // decrypt public String decode (String pass) {BASE64Decoder base = new BASE64Decoder (); byte [] B = null; try {B = base. decodeBuffer (pass);} catch (IOException e) {e. printStackTrace ();} return new String (B );}}

Md5 + base64

Package org. rui. base64; import java. security. messageDigest; import java. security. noSuchAlgorithmException; public class Md5 {/*** @ param args */public static void main (String [] args) {String pass = "1234 "; byte [] B = getDigest (pass. getBytes (); // System. out. println ("md5" + new String (B); Base64 b64 = new Base64 (); pass = b64.encode (B); // System. out. println ("md5 encrypted base64:" + pass); // If the Database Password is String dbpass = "gdyb21LQTT8229gxPtBV"; System. out. println (pass); System. out. println (dbpass); System. out. println ("consistent password:" + pass. equals (dbpass);} // MD5 encryption public static byte [] getDigest (byte [] B) {try {MessageDigest md = MessageDigest. getInstance ("MD5"); md. update (B); return md. digest ();} catch (NoSuchAlgorithmException e) {// FIXME: DDDe. printStackTrace ();} return null ;}}

Handwritten md5 encryption code

package snail.su.rui.util;import java.security.MessageDigest;public class Md5 {public final static String MD5(String s){char hexDigits[]={'0','1','2','3','4','5','9','7','8','6', 'l','i','a','n','g','r'};// char hexDigits[]={'0','1','2','3','4','5','6','7','8','9',// 'h','e','g','k','e','f'};//e10hkg3949eh59heee56e057f20f883e try { byte[] strTemp=s.getBytes(); MessageDigest mdTemp=MessageDigest.getInstance("MD5");mdTemp.update(strTemp);byte[] md=mdTemp.digest();int j=md.length;char str[]=new char[j*2];int k=0;for(int i=0;i
 
  >>4 & 0xf];str[k++]=hexDigits[byte0 & 0xf];}return new String(str);} catch (Exception e) {return null;}}public static void main(String [] args){String addmd5=Md5.MD5("123456");System.out.println("123="+addmd5);if(addmd5.equals("e10adc3949ba59abbe56e057f20f883e")){System.out.println("Md5.main()");}}}