Cryptography FM
In-depth, substantive discussions on the latest news and research in applied cryptography.
Displaying 4 items of Cryptography FM with the tag "secure messaging".
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Episode 22: Three Lessons from Threema: Breaking a Secure Messenger!
January 16th, 2023 | 52 mins 12 secs
secure messaging
Threema is a Swiss encrypted messaging application. It has more than 10 million users and more than 7000 on-premise customers. Prominent users of Threema include the Swiss Government and the Swiss Army, as well as the current Chancellor of Germany, Olaf Scholz. Threema has been widely advertised as a secure alternative to other messengers.
Kenny, Kien and Matteo from the ETH Zurich Applied Cryptography Group present seven attacks against the cryptographic protocols used by Threema, in three distinct threat models. All the attacks are accompanied by proof-of-concept implementations that demonstrate their feasibility in practice.
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Episode 16: Contact Discovery in Mobile Messengers!
May 24th, 2021 | 46 mins 44 secs
secure messaging
Do we really need to rely on sharing every phone number on our phone in order for mobile messengers to be usable? What are the privacy risks, and do better cryptographic alternatives exist for managing that data? Joining us are researchers looking exactly into this problem, who will tell us more about their interesting results.
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Episode 9: Off-the-Record Messaging and PKI Implementations!
November 20th, 2020 | 41 mins 41 secs
secure messaging
Sofía Celi of Cloudflare talks about the latest version of Off-the-Record secure messaging protocol, why deniability is important, and more.
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Episode 7: Scaling Up Secure Messaging to Large Groups With MLS!
November 10th, 2020 | 45 mins 10 secs
secure messaging
Raphael Robert from Wire talks about how MLS wants to scale secure messaging to groups with hundreds or even thousands of participants.