Showing only posts tagged history of cryptography. Show all posts.

Inventors of Quantum Cryptography Win Turing Award

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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 be fantastic, even though I think it’s largely unnecessary. I wrote up my thoughts back in …

Substitution Cipher Based on The Voynich Manuscript

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Here’s a fun paper: “ The Naibbe cipher: a substitution cipher that encrypts Latin and Italian as Voynich Manuscript-like ciphertext “: Abstract: In this article, I investigate the hypothesis that the Voynich Manuscript (MS 408, Yale University Beinecke Library) is compatible with being a ciphertext by attempting to develop a …

Book Review: The Business of Secrets

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The Business of Secrets: Adventures in Selling Encryption Around the World by Fred Kinch (May 24, 2004) From the vantage point of today, it’s surreal reading about the commercial cryptography business in the 1970s. Nobody knew anything. The manufacturers didn’t know whether the cryptography they sold was …

1965 Cryptanalysis Training Workbook Released by the NSA

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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 ciphertexts. The term appears in the newly declassified September 1965 document Cryptanalytic Diagnosis with the Aid of …

Jim Sanborn Is Auctioning Off the Solution to Part Four of the Kryptos Sculpture

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Well, this is interesting: The auction, which will include other items related to cryptology, will be held Nov. 20. RR Auction, the company arranging the sale, estimates a winning bid between $300,000 and $500,000. Along with the original handwritten plain text of K4 and other papers related …