cryptography

FBI Files on Cryptography – FBI File #80-HQ-612

Background Before the modern era, cryptography was concerned solely with message confidentiality (i.e., encryption)—conversion of messages from a comprehensible form…

August 4, 2022

The Voynich Manuscript – National Security Agency (NSA) Documents

Background According to Wikipedia: The Voynich manuscript is an illustrated codex hand-written in an unknown writing system. The vellum on which it is written has been carbon-dated to the…

August 24, 2017