import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
/**
* Created by meng1
* on 2018/3/9.
* at 北京
*/
public class MD5 {
public static String MD5(String str){
?MessageDigest md5 = null;
?try{
?md5 = MessageDigest.getInstance("MD5");
?}catch(Exception e){
?e.printStackTrace();
?return "";
}
?char[] charArray = str.toCharArray();
?byte[] byteArray = new byte[charArray.length];
?for(int i = 0; i < charArray.length; i++){
?byteArray[i] = (byte)charArray[i];
?}
?byte[] md5Bytes = md5.digest(byteArray);
?StringBuffer hexValue = new StringBuffer();
?for( int i = 0; i < md5Bytes.length; i++)
{
?int val = ((int)md5Bytes[i])&0xff;
//根據(jù)長(zhǎng)度判斷加密
if(val < 32)
{
?hexValue.append("0");
?}
?hexValue.append(Integer.toHexString(val));
?}
?return hexValue.toString();
}
public static String encryptmd5(String str) {
?char[] a = str.toCharArray();
?for (int i = 0; i < a.length; i++)
?{
?a[i] = (char) (a[i] ^ 'l');
?}
?String s = new String(a);
?return s;
?}
}
