package cn.wjdiankong.androiddemo;

import java.security.MessageDigest;

public class Utils {

private static char[] a = new char[]{'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f'};

public static String a(String str) {

return a(str.getBytes());

}

public static String a(byte[] bArr) {

String str = null;

try {

MessageDigest instance = MessageDigest.getInstance("MD5");

instance.update(bArr);

str = b(instance.digest());

} catch (Exception e) {

e.printStackTrace();

}

return str;

}

private static String b(byte[] bArr) {

int i = 0;

int length = bArr.length;

char[] cArr = new char[(length * 2)];

int i2 = 0;

while (i < length) {

byte b = bArr[i];

int i3 = i2 + 1;

cArr[i2] = a[(b >>> 4) & 15];

i2 = i3 + 1;

cArr[i3] = a[b & 15];

i++;

}

return new String(cArr);

}

}