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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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(Edited)VBA Select files with specific letters and numbering out of identical names with added variation

I'm starting to work with macros and I have a list of over 100 files to open in VBA with names such as: Mark001.xls Mark_001_initial.xls Mark001_improvement.xls Mark002.xls Mark002_initial. Marc002_Improvement.xls Pol001.xls ... Sub Macro1() Dim…
Anton
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UITextView field validation challenge

Here is the challenge; I want to ensure a number that is entered into a UItextview is 65535 [a short] or less. I can restrict the top digit to an[NSCharacterSet characterSetWithCharactersInString:@"123456"]; But I need to be smarter, cause the next…
user3069232
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Can't submit challenge code at CodeEval in Ruby properly

I was playing around with some challenges at codeeval.com and I get stuck when it comes to submitting my code. There is this weird bunch of code and I just don't understand, where to put my code :) Here is what I see: =begin Sample code to read in…
Georgeo
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Implementing challenge/response scheme with python-requests

I'm starting to learn how to use the python requests module. For practicing I tried to manage a challenge/response problem: I want to access the data on http://lema.rae.es/drae/srv/search?val=hacer With the "Tamper Data" plugin for Firefox I…
thomas
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Trouble with Javascript easy coderbyte challenge

I'm attempting to answer this question: Using the JavaScript language, have the function SimpleSymbols(str) take the str parameter being passed and determine if it is an acceptable sequence by either returning the string true or false. The str…
Anna Goldberg
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How can a server detect an invalid client

How can a server, i.e. a remote host acting as a central service for multiple clients, detect malicious or invalid clients akin to Blizzard's Warden. In some way, these kinds of software ask a client for specific information every once in a while,…
wondering
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Prevent hacked Java clients with checksum?

I have a Java client and a server and I want that everyone who connects to my server with the client uses the original client (not hacked or modified) (modifying is very easy by decompiling the code). My idea: When the client connects to the server,…
stonar96
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Worklight Security 403 Response. Missing method handleFailure for custom security realm

I am currently working on a Worklight 6.0 POC using the Header Authentication authentication/login module. When attempting to access a protected adapter in the app I receive the following error in the console: 403 (Forbidden) TypeError: Object #…
Gersty
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connect to telnet in python with a quizz as login?

I need to connect to a remote server via telnet. To authenticate to the server I have to answer like a 100 questions. So I tried to automate this task in python using telnetlib but the prompt halts without returning any message. here is what I…
Mohamed Ali JAMAOUI
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Urllib.Urlopen Python Challenge

I've recently started the Python Challenge and the current test requires a code that uses the string 24 characters in to the current page's content. I've come up with some code but cannot figure out why it only progresses to the next URL once, and…
craig
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How to use the Java SASL API and CRAM-MD5

I'm currently playing with the Java SASL API and I wrote a little program to simulate a challenge response sequence using CRAM-MD5. However, I'm unsure about how to do this, as SaslClient and SaslServer only have methods evaluateChallenge(...) and…
Fred
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challenge error shows null after failed attempt to login

This is a by the book example of REST/Webservice authentication in iOS. My password is wrong, and I get to the second part of else condition, which is correct behaviour. However [error localizedDescription] shows null. I was expecting an error to…
Houman
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Implementing challenge response authentication using RSA

I'm trying to implement a challenge response protocol using RSA with one side being a WCF service and the other a Windows Phone 7.1 client. I'm using the native implementation in .NET The protocol says that the client sends a request to the…
Alireza Kazeminia
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How to MD5 encrypt using Challenge Key

I am trying to establish a connection to a Server using MD5 Authentication. The server returns me the challenge key. How can I use it to encrypt my password and send it back to the server. The encryption method currently I know needs Password Hash,…
Yesudass
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Display UL elements in more columns

Is it possible somehow achieve to display LI tags from one UL in multiple columns?
I now I can get it with nested ul tags, but if is it possible it would be great! Even when some li…
vaclav_o
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