Use this tag for questions about challenge-response authentication. Do NOT use it because the question is related to some programming challenge.
Questions tagged [challenge-response]
106 questions
0
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0 answers
LetsEncrypt Challenge failed for domain when i try to get Certbot certificate
I'm trying to get a SSL certificate. When I tried the sudo certbot certonly --standalone -d example.com command it will give the following error.
http-01 challenge for "example.com"
Waiting for verification...
Challenge failed for domain ""
http-01…
lakhan kabra
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- 2
0
votes
0 answers
python cloudflare-scrape (cfscrape) fails to get cf_clearance and cf_duid tokens/cookies
I can't get the tokens cf_clearance and cf_duid on the sites protected by cloudflare in general using the cfscrape library. All I get is a cookie value that is None no matter which website I try to scrape.
More details on this module and cloudflare…
polo6767
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- 2
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0 answers
How to proceed? CTF challenge (binary file)
I have a capture the flag situation; I am quite new to this...
The following is given (translated from Brazilian Portuguese): "This challenge requires digging a little deeper than just "strings" to find the correct flag. Parse the attached binary…
soaresnoc
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- 3
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0 answers
Why an array comparison of sorted array in both ascending and descending in a single block of code/function results to true?
Why do ascending and descending arrays give the same output? Anyone can solve this?
function isSortedAndHow(arr) {
let asc = arr.sort((a, b) => a - b); // Ascending order , yes
let dsc = arr.sort((a, b) => b - a); // descending array, yes
if…
Ahsan Khalid
- 69
- 8
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votes
1 answer
Does Wordpress encrypt the login-credentials in the browser before they get send to the server?
I am wondering if someone who hacks a Wordpress site and who installs a Wordpress module on the server is able to read all user credentials from the users who logon. I know the passwords are stored as hash in the database and are more or less…
Michael Uray
- 145
- 7
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votes
0 answers
How would you rotate numbers in string using a rotational cypher?
Hello I'm trying to solve the classic rotational cypher problem but im also trying to solve for when numbers are included in the string. So far this is the method I have been going about it using javascript:
function rotationalCipher(input,…
Luckthedev
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- 2
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votes
2 answers
TestDome Challenge Closest Relative
I'm tried to solve this challenge from testdome and i got stuck.
The following HTML represents a family tree:
Implement the closestRelative function so that when a parent HTML…
munteanu dan
- 33
- 6
0
votes
2 answers
For loop: retaining exact strings (with spaces and quotations) to identify word occurence (python)
Bit stuck on a coding challenge here! I'm writing a function that takes two arguments (strings, queries) and prints the number of times each query string occurs in the input string. I think I'm quite close to figuring this out but my function is…
M_Oxford
- 361
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votes
1 answer
Authentication System with Challenge-Response
i am very new to Java and very new to Programming. My task is to build a Authentication System with at least two users and also a Challenge-Response-Request.
I generated Hashes of the Passwords using MD5 and a Salt, i just cant find a way to ask if…
oggy089
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- 1
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votes
1 answer
Remix the String
I am stuck with this challenge, any help would be great.
'Create a function that takes both a string and an array of numbers as arguments. Rearrange the letters in the string to be in the order specified by the index numbers. Return the "remixed"…
taha
- 11
0
votes
3 answers
JavaScript: How to create a function that receives an array of numbers and returns an array containing only the positive numbers?
What is Wrong with this Code? I should create a function that receives an array of numbers and returns an array containing only the positive numbers. How can it be modified? Especially Modified. Not another code!
all = prompt("Give me an array of…
Yeralkhan Slam
- 3
- 2
0
votes
1 answer
I cant figure this box array challenge
Task Description: you are given an unordered list of comma-separated strings with the order of values corresponding to the following:
0: unique identifier
1: x coordinates of the top left corner of a box
2: y coordinates of the top left corner of a…
Rubel
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- 2
0
votes
3 answers
String index out bound exception
Hi everyone I'm trying to write a program to convert from roman numerals to Arabic numerals. However, I keep having issues with StringIndexOutOfBoundsException: String index out of range: -1. below is my code
package com.company;
import…
ARMEL FOPA
- 206
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votes
1 answer
Lets encypt challenge requests fail when virtual path is modified and not wwroot
I'm switching to Lets Encrypt for all my certs and the web jobs are failing on my Laravel and Zend apps because the challenge requests fail. For my static sites everything works fine, for the Laravel/Zend sites the virtual path has been modified…
DBlackborough
- 141
- 7
0
votes
1 answer
Challenge Response Authentication with XTEA
I have two ESP8266 microcontroller boards:
Board A is running a HTTP server and is able to switch a relay by GET request from Board B, which is the HTTP client.
To ensure that only Board B, and nobody else, will switch the relais on Board A, I want…
cdoub
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