to write a message in cipher
51Gnommish — is the fairy language used in the Artemis Fowl series by Eoin Colfer. It is not actually a language at all, but the English language encoded into a letter substitution cipher where each symbol represents a letter. Lines of translatable Gnommish… …
52XSL attack — In cryptography, the XSL attack is a method of cryptanalysis for block ciphers. The attack was first published in 2002 by researchers Nicolas Courtois and Josef Pieprzyk. It has caused some controversy as it was claimed to have the potential to… …
53DVD — This article is about the storage media format. For the binocular vision condition, see Dissociated vertical deviation. DVD DVD R read/write side Media type Optical disc …
54diplomacy — /di ploh meuh see/, n. 1. the conduct by government officials of negotiations and other relations between nations. 2. the art or science of conducting such negotiations. 3. skill in managing negotiations, handling people, etc., so that there is… …
55Deniable encryption — In cryptography and steganography, deniable encryption is encryption that allows its users to convincingly deny that the data is encrypted, or that they are able to decrypt it[citation needed]. Such convincing denials may or may not be genuine.… …
56Ogham — Type Alphabet …
57letter — letter, epistle, missive, note, message, dispatch, report, memorandum are comparable when they mean a communication sent or transmitted as distinct from one conveyed directly from source to recipient (as by oral utterance). Letter is the ordinary …
58Nancy Drew — This article is about the fictional character. For the film, see Nancy Drew (2007 film). 1966 cover of the revised version of The Secret of the Old Clock, the first Nancy Drew mystery Nancy Drew is a fictional young amateur detective in various… …
59Cayley-Purser algorithm — The Cayley Purser algorithm was a public key cryptography algorithm published in early 1999 by 16 year old Irishwoman Sarah Flannery, based on an unpublished work by Michael Purser, founder of Baltimore Technologies, a Dublin data security… …
60Lincoln, Abraham — born Feb. 12, 1809, near Hodgenville, Ky., U.S. died April 15, 1865, Washington, D.C. 16th president of the U.S. (1861–65). Born in a Kentucky log cabin, he moved to Indiana in 1816 and to Illinois in 1830. After working as a storekeeper, a rail… …
