to encrypt a secret message
101Chosen-ciphertext attack — A chosen ciphertext attack (CCA) is an attack model for cryptanalysis in which the cryptanalyst gathers information, at least in part, by choosing a ciphertext and obtaining its decryption under an unknown key. In the attack, an adversary has a… …
102Polyalphabetic cipher — A polyalphabetic cipher is any cipher based on substitution, using multiple substitution alphabets. The Vigenère cipher is probably the best known example of a polyalphabetic cipher, though it is a simplified special case. The Enigma machine is… …
103Naccache–Stern knapsack cryptosystem — Note: this is not to be confused with the Naccache–Stern cryptosystem based on the higher residuosity problem. The Naccache–Stern Knapsack Cryptosystem is an atypical public key cryptosystem developed by David Naccache and Jacques Stern in 1997.… …
104SIGSALY — exhibit at the National Cryptologic Museum In cryptography, SIGSALY (also known as the X System, Project X, Ciphony I, and the Green Hornet) was a secure speech system used in World War II for the highest level Allied communications. It pioneered …
105Related-key attack — In cryptography, a related key attack is any form of cryptanalysis where the attacker can observe the operation of a cipher under several different keys whose values are initially unknown, but where some mathematical relationship connecting the… …
106Email encryption — refers to encryption, and often authentication, of email messages, which can be done in order to protect the content from being read by unintended recipients. Technology for email is readily available (see below), but has not achieved widespread… …
107Pidgin (software) — Infobox Software name = Pidgin caption = collapsible = yes developer = Sean Egan et al. released = 1999 frequently updated = yes programming language = C, C#, Perl, Python, Tcl platform = Cross platform language = [http://pidgin.im/l10n Multiple… …
108Freelancin' Roundtable — Roundtable (RT) was a modem based text chat system located in the Clear Lake City, Texas area near Houston for 3 years in the mid 1980’s frequented by local Bulletin Board System (BBS) users. The first 8 phone lines were installed in October,… …
109Benaloh cryptosystem — The Benaloh Cryptosystem is an extension of the Goldwasser Micali cryptosystem (GM) created in 1994 by Josh (Cohen) Benaloh. The main improvement of the Benaloh Cryptosystem over GM is that longer blocks of data can be encrypted at once, whereas… …
110Naccache-Stern knapsack cryptosystem — Note: this is not to be confused with the Naccache Stern cryptosystem based on the higher residuosity problem.The Naccache Stern Knapsack Cryptosystem is an atypical Public Key Cryptosystem developed by David Naccache and Jacques Stern in 1997.… …
