Instant messaging (IM) is a form of communication over the Internet, that offers quick transmission of text-based messages from sender to receiver

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How to establish a random OTR remote party as a specific individual?

In reading Glenn Greenwald's 2014 book No place to hide, one thing stood out to me as a bit odd. Greenwald details how Edward Snowden was insistent that Greenwald install PGP in order to communicate ...
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Instant Messaging End-to-End

I plan to create an application for secure instant messaging, now I don't know whether or not I want to implement the encryption by myself. This project is also mainly for educational purpose so I ...
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Does Diffie-Hellmann (DH) key exchange protocol lower Off-The-Record protocol (OTR) security level?

Off-the-Record protocol employes Diffie-Hellman key exchange protocol (DH). DH protocol does not provide authentication of the communicating parties and, according to many sources, is vulnerable to ...
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Can everyone find the pictures one sends over whatsapp?

I was trying out a whatsapp compatible chat application on my laptop. Someone sent me a picture and I received a link to that picture on the whatsapp server. Everyone who visits the link can see the ...