com.github.xphsc.encrypt.DESUtils Maven / Gradle / Ivy

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package com.github.xphsc.encrypt;

import java.security.SecureRandom;
import java.util.HashMap;
import java.util.Map;

import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESKeySpec;

class DESUtils {

	protected final static String KEY = "ScAKC0XhadTHT3Al0QIDAQAB";


    @SuppressWarnings("restriction")
	protected static String encrypt(String data,String key) {
        String encryptedData = null;
        try {
            SecureRandom sr = new SecureRandom();
            DESKeySpec deskey = new DESKeySpec(key.getBytes());
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
            SecretKey secretKey = keyFactory.generateSecret(deskey);
            Cipher cipher = Cipher.getInstance("DES");
            cipher.init(Cipher.ENCRYPT_MODE, secretKey, sr);
            encryptedData = new sun.misc.BASE64Encoder().encode(cipher.doFinal(data.getBytes()));
        } catch (Exception e) {
            throw new RuntimeException("加密错误，错误信息：", e);
        }
        return encryptedData;
    }

	protected static String decrypt(String cryptData,String key) {
        String decryptedData = null;
        try {
            SecureRandom sr = new SecureRandom();
            DESKeySpec deskey = new DESKeySpec(key.getBytes());
            SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
            SecretKey secretKey = keyFactory.generateSecret(deskey);
            Cipher cipher = Cipher.getInstance("DES");
            cipher.init(Cipher.DECRYPT_MODE, secretKey, sr);
            decryptedData = new String(cipher.doFinal(new sun.misc.BASE64Decoder().decodeBuffer(cryptData)));
        } catch (Exception e) {
            throw new RuntimeException("解密错误，错误信息：", e);
        }  
        return decryptedData;  
    }

    public static void main(String[] args)  {
        Map params = new HashMap();
        params.put("appid", "1233");
        System.out.println(encrypt("appid","123456"));
    }
}