com.zf.decipher.DataEn.java Source code

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Here is the source code for com.zf.decipher.DataEn.java

Source

/*
 * To change this license header, choose License Headers in Project Properties. To change this template file, choose Tools | Templates and open the template in the editor.
 */
package com.zf.decipher;

import java.security.KeyFactory;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.crypto.Cipher;
import javax.crypto.KeyAgreement;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;

import org.apache.commons.lang.StringUtils;

/**
 *
 * @author yzw
 */
public class DataEn {

    private static SecretKey secretKey;
    private static final String AES = "AES";

    static {
        try {
            secretKey = new SecretKeySpec(Base64.decode("8iLUnz1tcbfGwApQcpr2AQ==", 4), AES);
        } catch (Exception ex) {
            Logger.getLogger(DataEn.class.getName()).log(Level.SEVERE, null, ex);
        }
    }

    /**
     * 
     *
     * @param data
     *            ?
     * @return
     * @throws Exception
     */
    public static String encrypt(String data) throws Exception {
        byte[] endata = encrypt(data.getBytes());
        return Base64.encodeToString(endata, Base64.CRLF);
    }

    /**
     * 
     *
     * @param data
     *            ?
     * @return
     * @throws Exception
     */
    public static String decrypt(String data) throws Exception {
        if (StringUtils.isBlank(data))
            return "";
        byte be[] = Base64.decode(data, Base64.CRLF);
        return new String(decrypt(be));
    }

    private static byte[] encrypt(byte[] data) throws Exception {
        if (null == secretKey) {
            throw new SecurityException("secretKey is null");
        }
        Cipher cipher = Cipher.getInstance(secretKey.getAlgorithm());
        cipher.init(Cipher.ENCRYPT_MODE, secretKey);
        return cipher.doFinal(data);
    }

    private static byte[] decrypt(byte[] data) throws Exception {
        if (null == secretKey) {
            throw new SecurityException("secretKey is null");
        }
        Cipher cipher = Cipher.getInstance(secretKey.getAlgorithm());
        cipher.init(Cipher.DECRYPT_MODE, secretKey);
        return cipher.doFinal(data);
    }

    private static byte[] getSecretKey(byte[] publicKey, byte[] privateKey) throws Exception {
        KeyFactory keyFactory = KeyFactory.getInstance("DH");
        X509EncodedKeySpec x509KeySpec = new X509EncodedKeySpec(publicKey);
        PublicKey pubKey = keyFactory.generatePublic(x509KeySpec);
        PKCS8EncodedKeySpec pkcs8KeySpec = new PKCS8EncodedKeySpec(privateKey);
        PrivateKey priKey = keyFactory.generatePrivate(pkcs8KeySpec);
        KeyAgreement keyAgree = KeyAgreement.getInstance(keyFactory.getAlgorithm());
        keyAgree.init(priKey);
        keyAgree.doPhase(pubKey, true);
        return keyAgree.generateSecret(AES).getEncoded();
    }

    public static void main(String[] args) {
        try {
            System.out.println(DataEn.encrypt(
                    "{\"robotId\":\"aabbcc\",\"clickTime\":\"1480919718696\",\"clickId\":\"ncbtest1480919718696\",\"clickUrl\":\"http://niuc.com.test\",\"referer\":\"http://test.referer\",\"trackingUrl\":\"http://test.tackingurl\",\"clickResult\":\"1\"}"));
            String s = DataEn.encrypt(
                    "{\"robotId\":\"aabbcc\",\"clickTime\":\"1480919718696\",\"clickId\":\"ncbtest1480919718696\",\"clickUrl\":\"http://niuc.com.test\",\"referer\":\"http://test.referer\",\"trackingUrl\":\"http://test.tackingurl\",\"clickResult\":\"1\"}");
            String ss = s.replaceAll("\n", "").replaceAll("\r", "");
            System.out.println(s);
            System.out.println(ss);
            System.out.println(DataEn.decrypt(
                    "NPiRPQU7MvYejbxHFcLvyINidHKwQHbAGzhhgAmmeywNOjfF7Za7meXLxTgVKq2YMxWz0Q8SMuiLyQ59t0Zet0qKQqrzf7R9Saff6aDvCWm2LjccLDeQtaVO9ltPFxt1LDW5RZEFNZuyx5zP5fVFXAfMNrdmKjQ+i0yM6DRZ8UcuO0jAWarCM7VLpII+nBTA1ojkyynMWueZjagqEP0rZbgSHENtKJfFZ4JB6cvYe9hChjfT0FPkyvhXP6moKjC0YFNF7oaOJ8RfQJy56/OY5g=="));
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }
}