The Joy of Cryptography

• libsignal-protocol-java

  0 1,701 0.0 Java

  Signal Protocol library for Java/Android

  

  Signal message keys seem to include an IV. [1] Message keys are generated by passing a chain key through a key derivation function. [2] So you can also expand a shared secret established through Diffie-Hellman.

  Someone please correct me if I'm wrong.

  [1] https://github.com/signalapp/libsignal-protocol-java/blob/ma...

  [2] https://signal.org/docs/specifications/doubleratchet/Set0_1....

• koreader

  87 14,100 9.6 Lua

  An ebook reader application supporting PDF, DjVu, EPUB, FB2 and many more formats, running on Cervantes, Kindle, Kobo, PocketBook and Android devices

  

  In case you haven't tried, I suggest using koreader. It has a good combination of a reliable crop and a usable reflow feature. Not ideal, but it's much better than constant zooming and moving the view around.

  https://koreader.rocks/

• InfluxDB

  www.influxdata.com

  sponsored

  Collect and Analyze Billions of Data Points in Real Time. Manage all types of time series data in a single, purpose-built database. Run at any scale in any environment in the cloud, on-premises, or at the edge.

  

• ed25519

  3 20 0.0 C

  Minimal ed25519 Haskell package, binding to the ref10 SUPERCOP implementation.

  Those numbers are clearly nonsense; notice how the smaller ones don't even scale with key size. That paper is flawed. They obviously made a mistake.

  Look at the ed25519 benchmarks:

  https://ed25519.cr.yp.to/

  71000 signature verifications per second and 109000 signature generations per second on a quad-core machine. That is much, much faster than RSA.

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