generate Password - Android java.security

Android examples for java.security:Password

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Description

generate Password

Demo Code


//package com.java2s;
import java.security.MessageDigest;

public class Main {
    private final static String[] hexDigits = { "0", "1", "2", "3", "4",
            "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };

    public static String generatePassword(String inputString) {
        return encodeByMD5(inputString);
    }//from ww w.  j  a va 2s.co  m

    private static String encodeByMD5(String originString) {
        if (originString != null) {
            try {
                MessageDigest md = MessageDigest.getInstance("MD5");

                byte[] results = md.digest(originString.getBytes());

                String resultString = byteArrayToHexString(results);
                return resultString.toUpperCase();
            } catch (Exception ex) {
                ex.printStackTrace();
            }
        }
        return null;
    }

    private static String byteArrayToHexString(byte[] b) {
        StringBuffer resultSb = new StringBuffer();
        for (int i = 0; i < b.length; i++) {
            resultSb.append(byteToHexString(b[i]));
        }
        return resultSb.toString();
    }

    private static String byteToHexString(byte b) {
        int n = b;
        if (n < 0)
            n = 256 + n;
        int d1 = n / 16;
        int d2 = n % 16;
        return hexDigits[d1] + hexDigits[d2];
    }
}

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