Cryptography

2025

February

• A gentle introduction to shielded transactions February 15

2023

March

• Bringing Zero-Knowledge Proofs to Penumbra March 7

2022

December

• Poseidon377, our instantiation of a SNARK-friendly hash December 5

September

• Commitment Schemes 101 September 5

2020

October

• Investigating the Signal Protocol, Part 1: Foundations October 11

2019

November

• Implementing the CBC padding oracle attack November 29

May

• Collision attacks and the birthday paradox May 19