A description and set of rules for the ordered exchange of structured information designed with the goal of protecting the security of the system.

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How to use reflection attack in this simple protocol?

The following mutual authentication protocol has been designed to be resilient against reflection attacks. This is done by ensuring that the challenge from the initiator looks different from the ...
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Main difference between Yahalom and Needham-Schroeder key exchange protocols

I am just wondering what is the main difference between the Yahalom and Needham-Schroeder key exchange protocols? Which protocol uses less computational power?
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In U-Prove, what is the purpose of “Pseudonyms”, “Committed”, and “Scope” values and how are they used?

U-Prove allows for anonymous authentication and authorization without the involvement of an IdP. When a client generates a presentation proof 3 values can be optionally included, but I can't find ...
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63 views

Mutual Authentication Protocol based on MAC & shared secret key

I am quite unsure about how to approach this question, was wondering if anyone could give me a nudge in the right direction, I would be most appreciative! So I've learned about the 4-way handshake ...
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TLS fallback when only one protocol is enabled

Consider I have IE with ONLY TLS 1.2 enabled. TLS 1.0 and 1.1 are disabled. (And SSLv2,v3) I have a server that only supports TLS1.2, with 1.0 and 1.1 disabled as well. Assuming they share a ...
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Payment Application Integration - Encryption or HMAC

Doing an integration with an online payment provider. Payment provider will be making a web request to my server to provide some information about the basket content. On my end there's no payment ...