Base64和Md加解密

Base64加密算法

/**
 * Created by Jay-Tang on 2016/6/18.
 */

import sun.misc.BASE64Encoder;
import sun.misc.BASE64Decoder;

import java.io.IOException;

public class Base64 {
    public static String src = "shuaige";

    public static void main(String[] args) throws IOException {
        jiami();
        ccjiami();
        bcjiami();
    }

    public static void jiami() throws IOException {
        BASE64Encoder encoder = new BASE64Encoder();
        String strdecoder = encoder.encode(src.getBytes());
        System.out.println("加密：" + strdecoder);
        BASE64Decoder decoder = new BASE64Decoder();
        byte[] strdecoder2 = decoder.decodeBuffer(strdecoder);
        //字节数组转字符串
        String str = new String(strdecoder2);
        System.out.print("解密:" + str);
    }

    //用cc加密base64的算法
    public static void ccjiami() {
        byte[] encodeBase64 = org.apache.commons.codec.binary.Base64.encodeBase64(src.getBytes());
        System.out.print(new String(encodeBase64));
        byte[] decodeBase64=org.apache.commons.codec.binary.Base64.decodeBase64(encodeBase64);
        System.out.print(new String(decodeBase64));

    }
    //用bc的base64加密算法
    public static void bcjiami(){
        byte[] encodeBase64 =   org.bouncycastle.util.encoders.Base64.encode(src.getBytes());
        System.out.print(new String(encodeBase64));
        byte[] decodeBase64=org.bouncycastle.util.encoders.Base64.decode(encodeBase64);
        System.out.print(new String(decodeBase64));

    }

}

Md消息摘要算法

import org.apache.commons.codec.binary.Hex;
import org.apache.commons.codec.digest.DigestUtils;
import org.bouncycastle.crypto.Digest;
import org.bouncycastle.crypto.digests.MD4Digest;
import org.bouncycastle.crypto.digests.MD5Digest;

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

/**
 * Created by Jay-Tang on 2016/6/18.
 */
public class Md {
    public static String src = "shuaige";

    public static void main(String args[]) throws NoSuchAlgorithmException {

        jiamimd5();
        jiamimd2();
        bcMD4();
        bcMD5();
        ccMD5();
        ccMD2();
    }

    public static void jiamimd5() throws NoSuchAlgorithmException {
        MessageDigest md = MessageDigest.getInstance("MD5");
        //是16位的字节数组
        byte[] toChapter1Digest = md.digest(src.getBytes());
        System.out.println(Hex.encodeHex(toChapter1Digest));
    }

    public static void jiamimd2() throws NoSuchAlgorithmException {
        MessageDigest md = MessageDigest.getInstance("MD2");
        //是16位的字节数组
        byte[] toChapter1Digest = md.digest(src.getBytes());
        System.out.println(Hex.encodeHex(toChapter1Digest));
    }

    //bcmd4  bc独有的md4
    public static void bcMD4() {
        Digest digest = new MD4Digest();
        //调用update方法
        digest.update(src.getBytes(), 0, src.getBytes().length);
        byte[] md4Bytes = new byte[digest.getDigestSize()];
        digest.doFinal(md4Bytes, 0);
        System.out.println(org.bouncycastle.util.encoders.Hex.toHexString(md4Bytes));
    }

    //bc的md值
    public static void bcMD5() {
        Digest digest = new MD5Digest();
        //调用update方法
        digest.update(src.getBytes(), 0, src.getBytes().length);
        byte[] md4Bytes = new byte[digest.getDigestSize()];
        digest.doFinal(md4Bytes, 0);
        System.out.println(org.bouncycastle.util.encoders.Hex.toHexString(md4Bytes));
    }

    //cc的md5
    public static void ccMD5() {
        String str = DigestUtils.md5Hex(src.getBytes());
        System.out.println(str);
    }
    //cc的md2  简化了jdk里面md2里面的操作
    public static void ccMD2() {
        String str = DigestUtils.md2Hex(src.getBytes());
        System.out.println(str);
    }
}