package com.ubt.jimu.utils;

import java.security.MessageDigest;

/* loaded from: classes2.dex */
public class Md5Utils {
    public static String a(String str) {
        if (android.text.TextUtils.isEmpty(str)) {
            return "";
        }
        try {
            MessageDigest messageDigest = MessageDigest.getInstance("MD5");
            messageDigest.update(str.getBytes());
            return a(messageDigest.digest());
        } catch (Exception e) {
            e.printStackTrace();
            return "";
        }
    }

    private static String a(byte[] bArr) {
        StringBuffer stringBuffer = new StringBuffer();
        for (byte b : bArr) {
            String hexString = Integer.toHexString(b & 255);
            if (hexString.length() == 1) {
                stringBuffer.append('0');
            }
            stringBuffer.append(hexString);
        }
        return stringBuffer.toString();
    }

    public static String a(String str, int i) {
        if (android.text.TextUtils.isEmpty(str)) {
            return "";
        }
        try {
            MessageDigest messageDigest = MessageDigest.getInstance("MD5");
            messageDigest.update(str.getBytes());
            String a = a(messageDigest.digest());
            return android.text.TextUtils.isEmpty(a) ? "" : a.length() <= i ? a : a.substring(a.length() - i, a.length());
        } catch (Exception e) {
            e.printStackTrace();
            return "";
        }
    }
}