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

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;
import java.io.IOException;
import java.security.SecureRandom;



public class PHPDESEncrypt {
    String key;

    public PHPDESEncrypt() {

    }

    public PHPDESEncrypt(String key) {
        this.key = key;
    }

    public byte[] desEncrypt(byte[] plainText) throws Exception {
        SecureRandom sr = new SecureRandom();
        DESKeySpec dks = new DESKeySpec(key.getBytes());
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey key = keyFactory.generateSecret(dks);
        Cipher cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.ENCRYPT_MODE, key, sr);
        byte data[] = plainText;
        byte encryptedData[] = cipher.doFinal(data);
        return encryptedData;
    }

    public byte[] desDecrypt(byte[] encryptText) throws Exception {
        SecureRandom sr = new SecureRandom();
        DESKeySpec dks = new DESKeySpec(key.getBytes());
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey key = keyFactory.generateSecret(dks);
        Cipher cipher = Cipher.getInstance("DES");
        cipher.init(Cipher.DECRYPT_MODE, key, sr);
        byte encryptedData[] = encryptText;
        byte decryptedData[] = cipher.doFinal(encryptedData);
        return decryptedData;
    }

    public String encrypt(String input) throws Exception {
        return base64Encode(desEncrypt(input.getBytes())).replaceAll("\\s*", "");
    }

    public String decrypt(String input) throws Exception {
        byte[] result = base64Decode(input);
        return new String(desDecrypt(result));
    }

    public String base64Encode(byte[] s) {
        if (s == null) return null;
        BASE64Encoder b = new sun.misc.BASE64Encoder();
        return b.encode(s);
    }

    public byte[] base64Decode(String s) throws IOException {
        if (s == null) {
            return null;
        }
        BASE64Decoder decoder = new BASE64Decoder();
        byte[] b = decoder.decodeBuffer(s);
        return b;
    }

    public static void main(String[] args) {
        try {
            PHPDESEncrypt d = new PHPDESEncrypt("12345678");
            String p = d.encrypt("love");

            System.out.println("密文:" + p);
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public String getKey() {
        return key;
    }

    public void setKey(String key) {
        this.key = key;
    }
}