update 上传组件小改，配置
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8de5f162cd
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package com.ruoyi;
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import java.io.ByteArrayOutputStream;
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import java.io.DataOutputStream;
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import java.io.IOException;
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import java.security.MessageDigest;
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import java.security.NoSuchAlgorithmException;
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import java.security.SecureRandom;
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import java.util.Base64;
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import java.util.Random;
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import javax.crypto.Cipher;
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import javax.crypto.SecretKey;
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import javax.crypto.SecretKeyFactory;
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import javax.crypto.spec.DESKeySpec;
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public class FinalShellDecodePass {
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public static void main(String[] args) throws Exception {
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System.out.print(decodePassword("PjQxIS8pKi8fi8SeNbQtP1s3JUn5XPNs"));
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}
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public static byte[] decryptDes(byte[] data, byte[] key) throws Exception {
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SecureRandom secureRandom = new SecureRandom();
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DESKeySpec desKeySpec = new DESKeySpec(key);
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SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
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SecretKey secretKey = keyFactory.generateSecret(desKeySpec);
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Cipher cipher = Cipher.getInstance("DES");
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cipher.init(Cipher.DECRYPT_MODE, secretKey, secureRandom);
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return cipher.doFinal(data);
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}
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public static String decodePassword(String data) throws Exception {
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if (data == null) {
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return null;
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} else {
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byte[] decodedData = Base64.getDecoder().decode(data);
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byte[] head = new byte[8];
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System.arraycopy(decodedData, 0, head, 0, head.length);
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byte[] encryptedData = new byte[decodedData.length - head.length];
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System.arraycopy(decodedData, head.length, encryptedData, 0, encryptedData.length);
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byte[] decryptedData = decryptDes(encryptedData, generateRandomKey(head));
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return new String(decryptedData);
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}
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}
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static byte[] generateRandomKey(byte[] head) {
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long seed = 3680984568597093857L / (long) (new Random((long) head[5])).nextInt(127);
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Random random = new Random(seed);
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int t = head[0];
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for (int i = 0; i < t; ++i) {
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random.nextLong();
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}
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long n = random.nextLong();
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Random random2 = new Random(n);
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long[] keyData = {(long) head[4], random2.nextLong(), (long) head[7], (long) head[3], random2.nextLong(),
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(long) head[1], random.nextLong(), (long) head[2]};
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ByteArrayOutputStream bos = new ByteArrayOutputStream();
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DataOutputStream dos = new DataOutputStream(bos);
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for (long l : keyData) {
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try {
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dos.writeLong(l);
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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try {
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dos.close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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byte[] key = bos.toByteArray();
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return md5Hash(key);
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}
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public static byte[] md5Hash(byte[] data) {
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try {
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MessageDigest messageDigest = MessageDigest.getInstance("MD5");
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messageDigest.update(data, 0, data.length);
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byte[] result = messageDigest.digest();
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return result;
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} catch (NoSuchAlgorithmException e) {
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e.printStackTrace();
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return null;
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}
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}
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}
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