java-des加密

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package main;import java.security.Key;import java.security.NoSuchAlgorithmException;import java.security.SecureRandom;import java.text.SimpleDateFormat;import java.util.Date;import javax.crypto.Cipher;import javax.crypto.KeyGenerator;import org.apache.commons.codec.DecoderException;import org.apache.commons.codec.binary.Base32;import org.apache.commons.codec.binary.Base64;import org.apache.commons.codec.binary.Hex;public class CryptoUtil {    public static Key DEFAULT_KEY = null;    public static final String DEFAULT_SECRET_KEY1 = "?:P)(OL><KI*&UJMNHY^%TGBVFR$#EDCXSW@!QAZ";    public static final String DEFAULT_SECRET_KEY2 = "1qaz2wsx3edc4rfv5tgb6yhn7ujm8ik,9ol.0p;/";    public static final String DEFAULT_SECRET_KEY3 = "!QAZ@WSX#EDC$RFV%TGB^YHN&UJM*IK<(OL>)P:?";    public static final String DEFAULT_SECRET_KEY4 = "1qaz@WSX3edc$RFV5tgb^YHN7ujm*IK<9ol.)P:?";    public static final String DEFAULT_SECRET_KEY5 = "!QAZ2wsx#EDC4rfv%TGB6yhn&UJM8ik,(OL>0p;/";    public static final String DEFAULT_SECRET_KEY6 = "1qaz2wsx3edc4rfv5tgb^YHN&UJM*IK<(OL>)P:?";    public static final String DEFAULT_SECRET_KEY = DEFAULT_SECRET_KEY1;    public static final String DES = "DES";    public static final Base32 base32 = new Base32();    static {        DEFAULT_KEY = obtainKey(DEFAULT_SECRET_KEY);    }    /**     * 获得key     **/    public static Key obtainKey(String key) {        if (key == null) {            return DEFAULT_KEY;        }        KeyGenerator generator = null;        try {            generator = KeyGenerator.getInstance(DES);        } catch (NoSuchAlgorithmException e) {            e.printStackTrace();        }        generator.init(new SecureRandom(key.getBytes()));        Key key1 = generator.generateKey();        generator = null;        return key1;    }    /**     * 加密<br>     * String明文输入,String密文输出     */    public static String encode(String str) {        return encode64(null, str);    }    /**     * 加密<br>     * String明文输入,String密文输出     */    public static String encode64(String key, String str) {        return Base64.encodeBase64URLSafeString(obtainEncode(key, str.getBytes()));    }    /**     * 加密<br>     * String明文输入,String密文输出     */    public static String encode32(String key, String str) {        return base32.encodeAsString(obtainEncode(key, str.getBytes())).replaceAll("=", "");    }    /**     * 加密<br>     * String明文输入,String密文输出     */    public static String encode16(String key, String str) {        return Hex.encodeHexString(obtainEncode(key, str.getBytes()));    }    /**     * 解密<br>     * 以String密文输入,String明文输出     */    public static String decode(String str) {        return decode64(null, str);    }    /**     * 解密<br>     * 以String密文输入,String明文输出     */    public static String decode64(String key, String str) {        return new String(obtainDecode(key, Base64.decodeBase64(str)));    }    /**     * 解密<br>     * 以String密文输入,String明文输出     */    public static String decode32(String key, String str) {        return new String(obtainDecode(key, base32.decode(str)));    }    /**     * 解密<br>     * 以String密文输入,String明文输出     */    public static String decode16(String key, String str) {        try {            return new String(obtainDecode(key, Hex.decodeHex(str.toCharArray())));        } catch (DecoderException e) {            e.printStackTrace();        }        return null;    }    /**     * 加密<br>     * 以byte[]明文输入,byte[]密文输出     */    private static byte[] obtainEncode(String key, byte[] str) {        byte[] byteFina = null;        Cipher cipher;        try {            Key key1 = obtainKey(key);            cipher = Cipher.getInstance(DES);            cipher.init(Cipher.ENCRYPT_MODE, key1);            byteFina = cipher.doFinal(str);        } catch (Exception e) {            e.printStackTrace();        } finally {            cipher = null;        }        return byteFina;    }    /**     * 解密<br>     * 以byte[]密文输入,以byte[]明文输出     */    private static byte[] obtainDecode(String key, byte[] str) {        Cipher cipher;        byte[] byteFina = null;        try {            Key key1 = obtainKey(key);            cipher = Cipher.getInstance(DES);            cipher.init(Cipher.DECRYPT_MODE, key1);            byteFina = cipher.doFinal(str);        } catch (Exception e) {            e.printStackTrace();        } finally {            cipher = null;        }        return byteFina;    }    public static void main(String[] args) {        SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");        for (int i = 0; i < 1000; i++) {            System.out.println("");            Date date = new Date();            date.setSeconds(i);            String a = sdf.format(date);;            String key = "100000031553";            System.out.println(a);            String m = encode64(DEFAULT_SECRET_KEY2 + key, a);            String m3 = key + ";" + m;            System.out.println(m3);            String m2 = encode32(DEFAULT_SECRET_KEY3, m3);            System.out.println(m2);            String n1 = decode32(DEFAULT_SECRET_KEY3, m2);            System.out.println(n1);            String key1 = n1.split(";")[0];            String m4 = n1.split(";")[1];            String n = decode64(DEFAULT_SECRET_KEY2 + key1, m4);            System.out.println(n);        }    }}
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