Cryptography, the use of codes and ciphers, began thousands of years ago. Until recent decades, it has been the story of what might be called classical...

In cryptography, a salt is random data fed as an additional input to a one-way function that hashes data, a password or passphrase. Salting helps defend...

the practice and study of techniques for secure communication in the presence of adversarial behavior. More generally, cryptography is about constructing...

Books on cryptography have been published sporadically and with variable quality for a long time. This is despite the paradox that secrecy is of the essence...

Public-key cryptography, or asymmetric cryptography, is the field of cryptographic systems that use pairs of related keys. Each key pair consists of a public...

A key in cryptography is a piece of information, usually a string of numbers or letters that are stored in a file, which, when processed through a cryptographic...

the History of Telecommunications", Cryptologia, 13 (2): 97–117, doi:10.1080/0161-118991863817 (reprinted in Selections from Cryptologia: History, People...

Visual cryptography is a cryptographic technique which allows visual information (pictures, text, etc.) to be encrypted in such a way that the decrypted...

In the history of cryptography, M-325, also known as SIGFOY, was an American rotor machine designed by William F. Friedman and built in 1944. Between...

history of cryptography, a grille cipher was a technique for encrypting a plaintext by writing it onto a sheet of paper through a pierced sheet (of paper...

Cryptography was used extensively during World War II because of the importance of radio communication and the ease of radio interception. The nations...

declared war in the fall of 1939, the German government began sending technical assistance to upgrade their communications and cryptography capabilities. One...

that uses cryptography to control its creation and management rather than relying on central authorities. Originally designed as a medium of exchange,...

In cryptography, encryption (more specifically, encoding) is the process of transforming information in a way that, ideally, only authorized parties can...

Code Book describes some illustrative highlights in the history of cryptography, drawn from both of its principal branches, codes and ciphers. Thus the book's...

Also published in 1967, David Kahn's comprehensive chronicle of the history of cryptography, The Codebreakers, does not mention Bletchley Park, although...

Quantum cryptography is the science of exploiting quantum mechanical properties to perform cryptographic tasks. The best known example of quantum cryptography...

algorithms are algorithms for cryptography that use the same cryptographic keys for both the encryption of plaintext and the decryption of ciphertext. The keys...

 615. University of California at Berkeley Public Information Office (January 29, 1997). "The only legally exportable cryptography level is totally insecure;...

computer security standard used to approve cryptographic modules. The title is Security Requirements for Cryptographic Modules. Initial publication was on March...

methods and techniques of cryptanalysis have changed drastically through the history of cryptography, adapting to increasing cryptographic complexity, ranging...

Geheimfernschreiber Photographs of Sturgeon Entry for "Sturgeon" in the Government Code and Cypher School Cryptographic Dictionary Bletchley Park's Sturgeon...

message system. Financial cryptography is distinguished from traditional cryptography in that for most of recorded history, cryptography has been used almost...

In cryptography, a substitution cipher is a method of encrypting in which units of plaintext are replaced with the ciphertext, in a defined manner, with...

In cryptography, a classical cipher is a type of cipher that was used historically but for the most part, has fallen into disuse. In contrast to modern...

Below is a timeline of notable events related to cryptography. 36th century – The Sumerians develop cuneiform writing and the Egyptians develop hieroglyphic...

"Kryptos Donuts" in the sixth episode of The Recruit's Season 1, "I.N.A.S.I.A.L.". Copiale cipher History of cryptography Voynich manuscript The left-side...

In RSA-based cryptography, a user's private key—which can be used to sign messages, or decrypt messages sent to that user—is a pair of large prime numbers...

In cryptography, padding is any of a number of distinct practices which all include adding data to the beginning, middle, or end of a message prior to...

Story of Secret Writing (ISBN 0-684-83130-9) is a book by David Kahn, published in 1967, comprehensively chronicling the history of cryptography from ancient...