Encode String to MD5 string by converting byte array to hex string - Android java.security

Android examples for java.security:MD5

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Description

Encode String to MD5 string by converting byte array to hex string

Demo Code

import android.text.TextUtils;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.util.AbstractCollection;
import java.util.Collection;
import java.util.Iterator;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main{

    public static String MD5Encode(String origin) {
        try {/*from w w w  .  j av a 2 s  .  c om*/
            MessageDigest md = MessageDigest.getInstance("MD5");
            return byteArrayToHexString(md.digest(origin.getBytes()));
        } catch (Exception ex) {
            return null;
        }
    }
    public 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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