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lecture: Secrets and Time - how much torture can you endure until your key expires.

Protecting journalists and researchers with distributed cryptography.


Journalists and researchers find themselves in an environment where their digital devices are subject to searches, forced decryption and destruction - threatening their work and making source protection even harder.
In this talk we will describe and present a tool designed for protecting data at border crossings.

We're going to present a tool for helping against forced decryption:

Cypherlock: A distributed decryption oracle with a "time lock" state machine that allows creating messages that can only be decrypted at a user-defined future time slot.

The tool shows the combination of anonymous communication, distributed systems and cryptography as a model to solve problems of cryptography linked to time.

The Cypherlock software is going to be released to the public at the


Day: 2018-09-15
Start time: 16:15
Duration: 01:00
Room: Pupin



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