com.aqnote.shared.cryptology.digest.MD.java Source code

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Here is the source code for com.aqnote.shared.cryptology.digest.MD.java

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/*
 * Copyright 2013-2023 "Peng Li"<aqnote@qq.com>
 * Licensed under the AQNote License, Version 1.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.aqnote.com/licenses/LICENSE-1.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.aqnote.shared.cryptology.digest;

import static com.aqnote.shared.cryptology.cert.constant.BCConstant.JCE_PROVIDER;
import static org.apache.commons.lang.StringUtils.isBlank;

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.security.NoSuchProviderException;

import org.bouncycastle.asn1.pkcs.PKCSObjectIdentifiers;
import org.bouncycastle.jcajce.provider.digest.MD2;
import org.bouncycastle.jcajce.provider.digest.MD4;
import org.bouncycastle.jcajce.provider.digest.MD5;

import com.aqnote.shared.cryptology.AQProviderUtil;
import com.aqnote.shared.cryptology.util.lang.ByteUtil;

/**
 * Md5.java??TODO ?? query OID: http://www.oid-info.com/get/2.16.840.1.101.3.4.2.6
 * 
 * @author "Peng Li"<aqnote@qq.com> May 8, 2012 1:59:09 PM
 */
public class MD {

    private static final String DEFAULT_CHARSET = "UTF-8";

    private static final String OID_MD2 = PKCSObjectIdentifiers.md2.toString();
    private static final String OID_MD4 = PKCSObjectIdentifiers.md4.toString();
    private static final String OID_MD5 = PKCSObjectIdentifiers.md5.toString();

    static {
        AQProviderUtil.addBCProvider();
    }

    public final static String md2(String src) {
        if (isBlank(src))
            return "";
        try {
            return md2(src.getBytes(DEFAULT_CHARSET));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return "";
    }

    public final static String md2(byte[] src) {
        if (src == null)
            return "";
        try {
            // MessageDigest messageDigest = MessageDigest.getInstance("MD2");
            MessageDigest messageDigest = MessageDigest.getInstance(OID_MD2, JCE_PROVIDER);
            messageDigest.update(src);
            return new String(ByteUtil.toHexBytes(messageDigest.digest()));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchProviderException e) {
            e.printStackTrace();
        }
        return "";
    }

    public final static String _md2(byte[] src) {
        if (src == null)
            return "";
        MD2.Digest md = new MD2.Digest();
        md.update(src);
        return new String(ByteUtil.toHexBytes(md.digest()));
    }

    public final static String md4(String src) {
        if (isBlank(src))
            return "";
        try {
            return md4(src.getBytes(DEFAULT_CHARSET));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return "";
    }

    public final static String md4(byte[] src) {
        if (src == null)
            return "";
        try {
            // MessageDigest messageDigest = MessageDigest.getInstance("MD4");
            MessageDigest messageDigest = MessageDigest.getInstance(OID_MD4, JCE_PROVIDER);
            messageDigest.update(src);
            return new String(ByteUtil.toHexBytes(messageDigest.digest()));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchProviderException e) {
            e.printStackTrace();
        }
        return "";
    }

    public final static String _md4(byte[] src) {
        if (src == null)
            return "";
        MD4.Digest md = new MD4.Digest();
        md.update(src);
        return new String(ByteUtil.toHexBytes(md.digest()));
    }

    public final static String md5(String src) {
        if (isBlank(src))
            return "";
        try {
            return md5(src.getBytes(DEFAULT_CHARSET));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return "";
    }

    public final static String md5(byte[] src) {
        if (src == null)
            return "";
        try {
            // MessageDigest messageDigest = MessageDigest.getInstance("MD5");
            MessageDigest messageDigest = MessageDigest.getInstance(OID_MD5, JCE_PROVIDER);

            messageDigest.update(src);
            return new String(ByteUtil.toHexBytes(messageDigest.digest()));
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } catch (NoSuchProviderException e) {
            e.printStackTrace();
        }
        return "";
    }

    public final static String _md5(byte[] src) {
        if (src == null)
            return "";
        MD5.Digest md = new MD5.Digest();
        return new String(ByteUtil.toHexBytes(md.digest()));
    }

}