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Questions tagged [challenge-response]

Use this tag for questions about challenge-response authentication. Do NOT use it because the question is related to some programming challenge.

106 questions
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ASP Core 2.0 JwtBearerAuthentication not working

I am trying to use JwtBearerAuthentication in Asp core 2.0 and I've encountered two main issues. The Configure method of startup is like this: public void Configure(IApplicationBuilder app, IHostingEnvironment env) { if…
ConductedClever
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Is my code solution for Binary Gap is correct or not? What should I improved in that?

A binary gap within a positive integer N is any maximal sequence of consecutive zeros that is surrounded by ones at both ends in the binary representation of N. For example, number 9 has binary representation 1001 and contains a binary gap of length…
Vimal Panchal
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How to verify ECC Signature from wolfSSL with OpenSSL

I am new to Elliptic Curve Cryptography, openSSL and wolfSSL. My context is that I generate KeyPair from command line with openssl and import the private key to my code. Then I use wolfSSL to generate signature and output it. I save the output in…
Mayank Vijh
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How to implement conditional AutomaticChallenge in ASP.NET Core?

How do I redirect requests coming to some path (web site) to login page but respond with unauthorized to requests coming to another path (API paths)? As I understand AutomaticChallenge changes this behavior for all the web app. But how to make it…
Andrii
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NotAuthorizedException what i get in object Challenge

As in title, what I get in Object Challenge which I get from javax.ws.rs.NotAuthorizedException and how i can take realm, host and type of authorization from it? Object challenge = notAuthorizedException.GetChallenges()[0];
Tomasz Kryński
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Android 4.1.2 connection.getResponseCode() returns IOException wrongly

I'm using Volley in my app to make HTTP calls to my rest server. When a user is not authenticated (no SESSION ID cookie) the server returns a 401. But with Android 4.1.2 (with Android higher that 4.2.2 I don't have this problem) the calls fails with…
Johny19
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Biggest sum from array without adding 2 consecutive value

I'm working on a challenge from codefights.com. Given an array of integer (possibly negative) I need to return the biggest sum I can achieve without adding two consecutive integer (I can't change the order of the array). Not easy to explain so…
Spare
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Trouble porting a piece of code to C++ (CHAP)

I have the following, seemingly simple, piece of PHP code which is part of a CHAP implementation that I need to incorporate into a C++ project: $response = md5("\0" . hash('sha256', $password) . pack('H32', $challenge); This is what I have so…
user10504
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AJAX/PHP challenge-response login

I've started working on a new web project and this time I thought I would put some more thought into how I handle user authentication (previously only working with MD5 hashed passwords). I feel like I've searched all the corners of the web for an…
user1571510
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Security, cryptography: Stupid Challenge - Response protocol?

Ok guys just a small game: I have some specifications for a project. At some point they ask for the following to encrypt a password over the net, saying that it is a challenge response protocol: CLIENT ----------------------------- SERVER (1)ask…
Pablo Herrero
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jCryption + CRAM are a good alternative to SSL?

I would like to know if jCryption + Challenge Response Authentication Mechanism are a good alternative to SSL. I know that SSL is very much better, but I'm making a project where the owner don't want to buy a SSL certificate and, I would like to…
Cristiano Santos
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Customer List Challenge (TestDome)

I'm trying to solve this challenge from TestDome and i need some help. I dont really understand how i must toggle the email and how to append the item to DOM... !!Please without Vanilla JS only!! Implement the showCustomers function so that it…
munteanu dan
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PYTHON - "Love for Mathematics"

I just finished a challenge on Dcoder ("Love for Mathematics") using Python. I failed two test-cases, but got one right. I used somewhat of a lower level of Python for the same as I haven't explored more yet, so I'm sorry if it looks a bit too…
rev0
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How to authenticate user in keycloak using challenge response system while using its admin api

i m using keycloak 8.0 and i m looking to authenticate user by calling it admin api. Below is the curl command . curl -X POST \ http://localhost:8180/auth/realms/quickstart-serv-springboot/protocol/openid-connect/token \ -H 'Cache-Control:…
Cshah
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How to make Javascript redirect based on HTTP hostname header onload?

I am very new to Javascript. I master HTML and CSS. I am planning to make a bot detector for my website. Normal bot will not render javascript. So I want to make a Javascript based challenge website. If the user is a legitimate user, it will be…
Bryan
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