brute force cracking

Http://acm.hdu.edu.cn/showproblem.php? PID = 1, 4971 A simple brute force problem.Time Limit: 2000/1000 MS (Java/Others)Memory Limit: 65536/65536 K (Java/Others)Total Submission(s): 182Accepted Submission(s): 115 Problem descriptionthere's a company with several projects to be done. finish a project will get you profits. however, there are some technical problems for some specific projects. to solve the p

Question: I will give you an infinite number of 1-10 records, from 1-M to the two ends of the balance, and place them on different balances and different weights for two consecutive times, this means that the balances placed here each time are much heavier than those placed on the opposite side. Solution: 1) brute-force search, if estimated, still cannot pass, but the actual situation is much better than th

. The number of "replies" requires that the same continuous number can be compressed into a number, such as 1233221, which can be compressed to 12321, which is the number of replies. The idea is to fill in a number for brute force enumeration. First, fill in the first number on the left in the enumeration field from large to small, and then count the number on the right in the enumeration column as it is. P

ZOJ 1610 Count the Colors (line segment tree lazy + brute force statistics), zojlazy Count the Colors Time Limit: 2 Seconds Memory Limit: 65536 KB Painting some colored segments on a line, some previusly painted segments may be covered by some of the subsequent ones. Your task is counting the segments of different colors you can see at last. InputThe first line of each data set contains exactly one

Hdu 5077 NAND (brute force table), hdu5077 Link: hdu 5077 NAND Xiaoqiang needs to write an encoding program. Then, 8 characters are constructed based on the values of x1, x2, and x3. Now, 8 characters are generated as required. The minimum number of lines of code that Xiaoqiang needs to write. The Code content can only be NAND and return operations, and the variable operated can be a constant. Solution: the

Hdoj 4971 A simple brute force problem. [maximum weight closure diagram, hdoj4971 Question: hdoj 4971 A simple brute force problem. Question:Given n tasks and m technologies, several technologies are required to complete a task. To complete a task, you have a bonus. Learning a technology requires money,There is a pare

HDU 4876 ZCC loves cards (brute force pruning), hduzccHDU 4876 ZCC loves cards Question Link Given some cards with numbers on each card, select k cards and wrap them into a ring. You can choose 1-k cards on the ring each time, obtain the number of their exclusive or sum. Given an L, ask the maximum value of R when [L, R] is composed of all numbers. Idea: brute-

Function call in C Language 08-the brute-force law is used to calculate the maximum and minimum public multiples of the four numbers, and the 08 common// Array Enumeration/*========================================================== ============================Question: calculate the maximum or least common number of four numbers.========================================================== ====================

1. The registration location provides three options for users: Mobile Phone registration, email registration, and user name registration. This Vulnerability refers to the use of email registration. Why? Smart friends may have discovered that there is no verification code in the mailbox registration location (the other two methods have verification codes, which may be neglected by developers ). 2. Enter your email address, password, and nickname, and then register. After registration, you will b

Publish a newly compiled brute force version of the gentle version of the Chinese truncation function. It is recommended to use the brute-force version, which is safe and reliable. the gentle version is more efficient in programming. the basic principle is to correct the off and len may be misplaced. the gentle version

Block SSH brute force hackDescriptionToday inadvertently read the next/var/log/secure log, startled, as follows:sep1514:25:12localhostsshd[5914]:failedpasswordforroot from221.203.142.70port49476ssh2sep1514:25:12localhostsshd[5934 ]:failedpasswordforrootfrom115.182.88.152port28712 Ssh2sep1514:25:13localhostsshd[5918]:failedpasswordforroot from221.203.142.72port44212ssh2Sep1514:25:13localhost sshd[5930]:faile

is a positive integer n (1Output each set of input data corresponds to a row of outputs. If this four-digit number is determined according to this conversation, the output of this four-digit number, if not, outputs "not sure".Sample Input64815 2 15716 1 07842 1 04901 0 08585 3 38555 3 224815 0 02999 3 30Sample output3585not sure knowledge Point: Brute force enumeration difficulty: Judging the computer answ

for month, W for week, Y for year)age_reset_root=25dage_reset_restricted=25dage_reset_invalid=10dReset_on_success = yes #如果一个ip登陆成功后, the failed login count is reset to 0Daemon_log =/var/log/denyhosts #自己的日志文件Daemon_sleep = 30s #当以后台方式运行时, the time interval for each log file read.Daemon_purge = 1h #当以后台方式运行时, the purge mechanism terminates the time interval of the old entry in Hosts_deny, which affects the Purge_deny interval.See my/etc/hosts.deny file found there are 8 records.$ sudo cat/etc/h

A simple brute force problem. Time Limit:1000msmemory limit:65536kbthis problem'll be judged onHDU. Original id:497164-bit integer IO format: %i64d Java class name: Main There ' s a company with several projects to is done. Finish a project would get you profits. However, there is some technical problems for some specific projects. To solve the problem, the manager would train his employee which could cost

generate the dictionary.Finding the right keyword requires some tips. For example, I forgot a file password (. php) used to manage the server. I need to enter a user name and password to open this file before I can make changes to my server. I also forgot the login information for cpanel. So I decided to brute force password. I remember the user name, but the password was not very clear, and I tried all th

This implementation is the brute force method of two examples, the choice of sorting method and bubble sorting method, the use of the compilation environment is vs2013, the following two algorithms to do a brief introduction, and then the two algorithm of C + + implementation code.The selection sort method compares the entire list, each time the scan ends to find the smallest element in the previous positio

ZOJ 1610 Count the Colors (line segment tree lazy + Brute Force Statistics) Count the Colors Time Limit: 2 Seconds Memory Limit: 65536 KB Painting some colored segments on a line, some previusly painted segments may be covered by some of the subsequent ones. Your task is counting the segments of different colors you can see at last. InputThe first line of each data set contains exactly one integer n,

Linux series of many operating systems are using MD5 encryption user password, encryption process is one-way, so to crack can only use brute force crack method.Below to share a program to crack the root user password.The program iterates through each password in the dictionary file, matches the password in the/etc/shadow, and returns success if the same.#!/usr/bin/env pythonImport CryptImport SysImport reDI

This is my first shell Script, write chaos, experiment, or is available, and now on my own Web server running up!! ~~#!/bin/bash# this shellscript to prevent SSH brute force hack #auther:aaronguo#date:jan82016#version:1.2# Specifies the shell's log file logfile= "/var/log/blocked_ip" # gets the current time, used for grep/var/log/secure. (format: MMNBSP;DD NBSP;HH) timenow=$ (date ' +%b%e%h ') # if 20 conn

A criminal Investigation Brigade has analyzed a mystery involving six suspects:(1) A, B at least one person committed the crime; (2) A, E, F Three have at least two persons involved in the crime, (3) A, D cannot be accomplices, (4) B, C or both, or is unrelated to the case, (5) C, D and only one person, (6) If D is not involved in the crime, then E may not participate in the crime. The brute force method is