Quote by David Kahn

“The task of the cryptanalysts consisted primarily of reconstructing the wiring and switches of the coding wheels—a task made more burdensome by the daily…

— David Kahn

“It uses twenty-six substitution ciphers,” he told her. “One for each letter of the alphabet. But the problem is that it requires a keyword…

— Christa Faust

“This list encompassed, for the first time in cryptography, both transposition and substitution systems, and, moreover, gave, in system 5, the first cipher ever…

— David Kahn

“The technique was at least moderately well known, for Ibn Khaldūn wrote in The Muqaddimah: “Occasionally, skillful secretaries, though not the first to invent…

— David Kahn

My favorite method of encryption is chunking revolutionary documents inside a mess of JPEG or MP3 code and emailing it off as an "image"…

— Kenneth Goldsmith

“It would really help us if you could all agree on one tool to assess Letter Identification, Concepts about Print, and Sight Words.”

— Clare Landrigan

Anyone, from the most clueless amateur to the best cryptographer, can create an algorithm that he himself can't break.

— Bruce Schneier

“Plaintext a might be represented in a long message by all 26 letters. Conversely, any given ciphertext letter might stand for any one of…

— David Kahn

“In the 1970s and 1980s, though, mathematicians at Stanford and MIT made a series of breakthroughs that made it possible, for the first time,…

— Nathaniel Popper

“Cryptographers are professional paranoids”

— Jason Fagone

“between 321 and 300 B.C., recommended that ambassadors use cryptanalysis to obtain intelligence: “If there is no possibility of carrying on any such conversation…

— David Kahn

“mailing list, which is where all of the cool guys like John Cantrell hang out to discuss the very latest hashing algorithms and pseudo-random-number…

— Neal Stephenson