biuaxia

import org.apache.commons.codec.binary.Base64;  
import org.bouncycastle.jce.provider.BouncyCastleProvider;  

import javax.crypto.Cipher;  
import javax.crypto.SecretKeyFactory;  
import javax.crypto.spec.DESKeySpec;  
import javax.crypto.spec.IvParameterSpec;  
import javax.crypto.spec.SecretKeySpec;  
import java.security.Key;  
import java.security.Security;  
import java.security.spec.AlgorithmParameterSpec;  
import java.util.Date;  

public class AES {  

    public AES() {  
    }  

    static {  
        if (Security.getProvider("BC") == null) {  
            Security.addProvider(new BouncyCastleProvider());  
        }  

    }  

    public static String Decrypt(String sSrc, String sKey) throws Exception {  
        try {  
            if (sKey == null) {  
                System.out.print("16位skey不为空");  
                return null;  
            } else if (sKey.length() != 16) {  
                System.out.print("skey长度不是16位");  
                return null;  
            } else {  
                byte[] raw = sKey.getBytes("utf-8");  
                SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");  
                Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");  
                cipher.init(2, skeySpec);  
                byte[] encrypted1 = (new Base64()).decode(sSrc);  

                try {  
                    byte[] original = cipher.doFinal(encrypted1);  
                    return new String(original, "utf-8");  
                } catch (Exception var8) {  
                    System.out.println(var8.toString());  
                    return null;  
                }  
            }  
        } catch (Exception var9) {  
            System.out.println(var9.toString());  
            return null;  
        }  
    }  

    private static Key getKey(String str) throws Exception {  
        DESKeySpec dks = new DESKeySpec(str.getBytes("UTF-8"));  
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES", "BC");  
        return keyFactory.generateSecret(dks);  
    }  

    private static AlgorithmParameterSpec getIv(String iv) throws Exception {  
        return new IvParameterSpec(iv.getBytes("UTF-8"));  
    }  

    public static String encrypt(String key, String iv, String str) throws Exception {  
        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding", "BC");  
        cipher.init(1, getKey(key), getIv(iv));  
        byte[] data = cipher.doFinal(str.getBytes("UTF-8"));  
        return Base64encode(data);  
    }  

    public static String decrypt(String key, String iv, String str) throws Exception {  
        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding", "BC");  
        cipher.init(2, getKey(key), getIv(iv));  
        byte[] sss = cipher.doFinal(Base64decode(str));  
        return new String(sss, "UTF-8");  
    }  

    public static String aesDecrypt(String key, String iv, String str) throws Exception {  
        str = str.replace("_", "+");  
        byte[] encrypted1 = Base64decode(str);  
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding", "BC");  
        cipher.init(2, new SecretKeySpec(key.getBytes("UTF-8"), "AES"), getIv(iv));  
        byte[] original = cipher.doFinal(encrypted1);  
        return new String(original, "UTF-8");  
    }  

    public static String aesEncrypt(String key, String iv, String str) throws Exception {  
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding", "BC");  
        cipher.init(1, new SecretKeySpec(key.getBytes("UTF-8"), "AES"), getIv(iv));  
        byte[] encrypted = cipher.doFinal(str.getBytes("UTF-8"));  
        String s = Base64encode(encrypted);  
        s = s.replace("+", "_");  
        return s;  
    }  

    private static String Base64encode(byte[] data) throws Exception {  
        return new String(Base64.encodeBase64(data), "UTF-8");  
    }  

    private static byte[] Base64decode(String str) throws Exception {  
        return Base64.decodeBase64(str.getBytes("UTF-8"));  
    }  

    public static String getTime() {  
        return String.valueOf(new Date().getTime());  
    }  

    public static void main(String[] args) throws Exception {  
        // String enString = "9HEhlcxA4eZk0Q6c42z6ZA==";  
        // String deString = enString.replace("InC9ReO0SE", "+");  
        // String sdeString = Decrypt(deString, "MTRjNzOANWJjYWEz");  
        // System.out.println("解密后的字串是：" + sdeString);  
        // for (int i = 0; i < 20; i++) {  
        Date now = new Date(1637117714679L);  
        System.out.println(now.getTime());  
        System.out.println(aesEncrypt("3tcac4konflddsrh", "xapsk6al0opqq4eo", String.format("%s、%s", "313015", now.getTime())));  
        System.out.println(aesDecrypt("3tcac4konflddsrh", "xapsk6al0opqq4eo", "yKTNKqAcPD6cFTso4Qqbs_W7aA3RNKBu3viOx7ESvBc="));  
        System.out.println("------------------------------ 分割 ------------------------------ ");  
        // }  

        // String plain = decrypt("3tcac4konflddsrh", "xapsk6al0opqq4eo", "i3pGlVlwnTpSsfeBssi1BbWvCy+d7NL0E1R7/lZkmVc=");  
        // String[] split = plain.split("、");  
        // System.out.println(plain);  
        // System.out.println(split[0]);  
        // System.out.println(split[1]);  
        // Date expireTime = new Date(Long.parseLong(split[1]));  
        // System.out.println(expireTime);  
        //  
        // System.out.println(DateUtil.parse("2021-11-17 12:00:21", DateUtil.YEAR_MONTH_DAY_HOUR_MINUTE_SECOND_PATTERN).getTime());  
        // System.out.println(DateUtil.parse("2021-11-17 12:00:31", DateUtil.YEAR_MONTH_DAY_HOUR_MINUTE_SECOND_PATTERN).getTime());  
        //  
        // System.out.println(System.currentTimeMillis() - Long.parseLong(split[1]) <= 10000);  
    }  

}