Compare MD5 from JDK, bouncycastle and apache commons codec - Java Security

Java examples for Security:MD5

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Description

Compare MD5 from JDK, bouncycastle and apache commons codec

Demo Code


import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.Security;

import org.apache.commons.codec.binary.Hex;
import org.apache.commons.codec.digest.DigestUtils;
import org.bouncycastle.crypto.Digest;
import org.bouncycastle.crypto.digests.MD5Digest;
import org.bouncycastle.jce.provider.BouncyCastleProvider;

public class ImoocMD {

    private static String src = "imooc security md";

    public static void main(String[] args) {
        jdkMD5();//  www.j ava  2s  .  co m
        jdkMD2();
        bcMD4();
        bcMD5();
        ccMD5();
        ccMD2();
    }

    public static void jdkMD5() {
        try {
            MessageDigest md = MessageDigest.getInstance("MD5");
            byte[] md5Bytes = md.digest(src.getBytes());
            System.out
                    .println("JDK MD5 : " + Hex.encodeHexString(md5Bytes));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
    }

    public static void jdkMD2() {
        try {
            MessageDigest md = MessageDigest.getInstance("MD2");
            byte[] md2Bytes = md.digest(src.getBytes());
            System.out
                    .println("JDK MD2 : " + Hex.encodeHexString(md2Bytes));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
    }

    public static void bcMD5() {
        Digest digest = new MD5Digest();
        digest.update(src.getBytes(), 0, src.getBytes().length);
        byte[] md5Bytes = new byte[digest.getDigestSize()];
        digest.doFinal(md5Bytes, 0);
        System.out.println("BC MD5 : "
                + org.bouncycastle.util.encoders.Hex.toHexString(md5Bytes));
    }

    public static void bcMD4() {
        try {
            Security.addProvider(new BouncyCastleProvider());
            MessageDigest md = MessageDigest.getInstance("MD4");
            byte[] md5Bytes = md.digest(src.getBytes());
            System.out.println("BC MD4 : " + Hex.encodeHexString(md5Bytes));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
    }

    public static void ccMD5() {
        System.out
                .println("CC MD5 : " + DigestUtils.md5Hex(src.getBytes()));
    }

    public static void ccMD2() {
        System.out
                .println("CC MD2 : " + DigestUtils.md2Hex(src.getBytes()));
    }

}

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