Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [plausible-deniability]

Plausible deniability may refer $1)$ to deniable encryption schemes allowing to decrypt a ciphertext for a message $m$ to some distinct message $m'$ or $2)$ to a feature provided by deniable file systems.

1
vote
0answers
31 views

Could you design something like a ring signature that uses website accounts instead of keys?

Ring signatures allow one to prove that you own a private key corresponding to a public key from a set of keys, without revealing which private key you control. This is useful if you are part of some ...
5
votes
2answers
106 views

Plausibly deniable authentication for agents on multiple teams

Here's a problem that I've been thinking about: An individual, Alice, wishes to authenticate herself. She may wish to authenticate to Bob (who is on the blue team) that they are both on the blue team....
1
vote
1answer
154 views

What exactly is Plausible Deniability in Internet Protocols? Can someone help me understand this with an example, please?

I am trying to understand the meaning of "Plausible Deniability Feature of Internet Protocols", to be specific, I am not able to understand what "Plausible Deniability" exactly means?
3
votes
3answers
193 views

Deniability properties of the X3DH Key Agreement Protocol

Signal's X3DH Key Agreement Protocol specification states in section 4.5.: Alternatively, it might be tempting to replace the DH-based mutual authentication (i.e. DH1 and DH2) with signatures from ...
2
votes
0answers
65 views

Plaintext DH keys in the message header in the Double Ratchet Algorithm

I've been reading details about the Double Ratchet algorithm, and I wanted some clarification regarding the aspect of the DH public keys going out in the plain in the header of every message. Quoting ...
1
vote
1answer
64 views

Perfect Deniability of a MAC Protocol

I proposed an idea of Perfect Deniability of a MAC I tried to come up with a protocol that satisfies those security requirements as well as the normal security requirements of a MAC One-Time MAC ...
3
votes
1answer
78 views

How to deniably send a value

Alice has a single bit of information, b, that she wants to send to Bob (over an unalterable but possibly-monitored channel) but in such a way that without the ...
4
votes
0answers
108 views

Why reveal MAC-keys after using them?

As far as my understanding goes MACs are used to determine whether the received message comes from a source that has access to a MAC-key which is known by both parties. Some crypto protocols reveal ...
1
vote
1answer
156 views

Algorithm accepting every passphrase to fool unlegit user [closed]

I'm looking for specific names and literature on crypto algorithms that accept every passphrase input by the user, in order to 'decrypt' - even with false passphrase - and present the unlegit user ...
3
votes
3answers
328 views

A specific way for deniable encryption

I read the summary of deniable encryption on wikipedia: https://en.wikipedia.org/wiki/Deniable_encryption Then I read a question, by doom123 on security.SE: https:/...
2
votes
1answer
252 views

Decryption honeypots

When performing a key search, I've always wondered how you reliably detect a successful decryption once you hit the right key. I assume that you have to analyze the data and look for patterns: words, ...