com.fastchar.utils.FastAESUtils Maven / Gradle / Ivy

/**
 * 安徽创息软件科技有限公司版权所有 http://www.croshe.com
 **/
package com.fastchar.utils;

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

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.SecretKey;
import javax.crypto.spec.SecretKeySpec;
import java.nio.charset.StandardCharsets;
import java.security.SecureRandom;


public class FastAESUtils {

    /**
     * 加密
     * @param content
     * @param password
     * @return
     */
    public static String encrypt(String content, String password) {
        try {
            KeyGenerator keygen = KeyGenerator.getInstance("AES");
            SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
            random.setSeed(password.getBytes());

            keygen.init(128, random);
            SecretKey original_key = keygen.generateKey();
            byte[] raw = original_key.getEncoded();
            SecretKey key = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            cipher.init(Cipher.ENCRYPT_MODE, key);
            byte[] byte_encode = content.getBytes(StandardCharsets.UTF_8);
            byte[] byte_AES = cipher.doFinal(byte_encode);
            return new BASE64Encoder().encode(byte_AES);
        } catch (Exception ignored) {
        }
        return null;
    }

    /**
     * 解密
     * @param content
     * @param password
     * @return
     */
    public static String decrypt(String content, String password) {
        try {
            KeyGenerator keygen = KeyGenerator.getInstance("AES");
            SecureRandom random = SecureRandom.getInstance("SHA1PRNG");
            random.setSeed(password.getBytes());

            keygen.init(128, random);
            SecretKey original_key = keygen.generateKey();
            byte[] raw = original_key.getEncoded();
            SecretKey key = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, key);
            byte[] byte_content = new BASE64Decoder().decodeBuffer(content);
            byte[] byte_decode = cipher.doFinal(byte_content);
            return new String(byte_decode, StandardCharsets.UTF_8);
        } catch (Exception ignored) {}
        return null;
    }

}