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;
//根据长度判断加密
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;
}
}
