Signal Cryptography Audit: A Weekend Deep Dive

This article details a weekend-long cryptographic audit of the popular encrypted messaging app Signal, conducted by an applied cryptography expert. The author explains the process and limitations of cryptographic audits, highlighting how companies sometimes misrepresent audit results. Using Signal as a case study, the author examines its implemented encryption mechanisms, outlining future audit priorities. The goal is to empower users to better understand and evaluate the security of encrypted apps, moving beyond marketing claims.