history of cryptography
Inventors of Quantum Cryptography Win Turing Award
Charles Bennett and Gilles Brassard have won the 2026 Turing Award for inventing quantum cryptography. I am incredibly pleased to see them get this recognition. I have always thought the technology to ...
Book Review: The Business of Secrets
The Business of Secrets: Adventures in Selling Encryption Around the World by Fred Kinch (May 24, 2024) From the vantage point of today, it’s surreal reading about the commercial cryptography business in ...
1965 Cryptanalysis Training Workbook Released by the NSA
In the early 1960s, National Security Agency cryptanalyst and cryptanalysis instructor Lambros D. Callimahos coined the term “Stethoscope” to describe a diagnostic computer program used to unravel the internal structure of pre-computer ...
On the Voynich Manuscript
Really interesting article on the ancient-manuscript scholars who are applying their techniques to the Voynich Manuscript. No one has been able to understand the writing yet, but there are some new understandings: ...
Declassified NSA Newsletters
Through a 2010 FOIA request (yes, it took that long), we have copies of the NSA’s KRYPTOS Society Newsletter, “Tales of the Krypt,” from 1994 to 2003. There are many interesting things ...
Military Cryptanalytics, Part III
The NSA has just declassified and released a redacted version of Military Cryptanalytics, Part III, by Lambros D. Callimahos, October 1977. Parts I and II, by Lambros D. Callimahos and William F ...
