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Questions tagged [authentication]

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How does storing encrypted password provide secure authentication?

It's universally accepted that storing an unencrypted password for automated authentication is a very bad idea, for the saved password can be used by malware, etc. There is a number of systems that ...
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2answers
57 views

Password authentication over an insecure connection

I was thinking a way to send password to server secure way without using secure connection,I found one solution.I want to find flaw in this.(Note: I am begginer,dont judge me, I know little about ...
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0answers
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why does message authentication using 2-universal family of hash functions require a prime number of possible hash values?

I am self-studying the book Intro to Algorithms 3ed by CLRS. One of the problems seems to give a piece of information that is not necessary, Problem 11-4 in the book states Let H be class of hash ...
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0answers
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Can voice biometrics, (specifically voice recognition) application be used at windows logon screen? [closed]

I'm planning to develop an application in C# programming language for user authentication. Target platform = Newer Windows versions such as Windows 8/10. Your kind answers will be much appreciated. ...
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1answer
76 views

How would P2P Kriegspiel be designed?

Kriegspiel chess is a variant of chess in which each player is not aware of where the opponent's pieces are. In a human match, a trusted intermediary relays piece losses, legality of moves etc. This ...
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2answers
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Zero-knowledge proof: Abstract example

So I was reading about ZKP on wikipedia, the abstract example in summary goes like this: Peggy wants to prove to Victor that she knows the secret to a door inside a cave that connect A and B ...
2
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1answer
73 views

User recognition through keystroke pattern

Hello thank you for taking time looking at this question. Is it possible to determine the keystroke patterns for a certain user? My idea is that, when the user enters their username & password it ...
2
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1answer
206 views

Can Eve impersonate Alice or Bob by using a replay attack?

For my computer science study, I have to design a replay attack (if possible) for the following authentication protocols. I use the standard security protocol notation. In these protocols, $A$ is ...
0
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1answer
594 views

Two Step Verification. 4 digits vs 6 digits

From a security level standpoint (such as Server, DataBase, Token Code, Authorization, Authentication, etc.) in regarding the Two Step Verification, usually Apple send a total of 4 digits security ...
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1answer
539 views

Is WPA2 with pre-shared key an example of a zero-knowledge proof?

When setting up an access point and selecting WPA2, one must manually enter a pre-shared key (a password), PSK, into both the AP and the STA. Both parties, AP and STA, must authenticate each other. ...
4
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1answer
115 views

Break an authentication protocol based on a pre-shared symmetric key, with message numbers

Consider the following protocol, meant to authenticate $A$ (Alice) to $B$ (Bob) and vice versa. $$ \begin{align*} A \to B: &\quad \text{“I'm Alice”}, R_A \\ B \to A: &\quad E(\langle 1, R_A\...
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1answer
333 views

Break an authentication protocol based on a pre-shared symmetric key

Consider the following protocol, meant to authenticate $A$ (Alice) to $B$ (Bob) and vice versa. $$ \begin{align*} A \to B: &\quad \text{“I'm Alice”}, R_A \\ B \to A: &\quad E(R_A, K) \...