- the science or study of the techniques of secret writing, especially code and cipher systems, methods, and the like.Compare cryptanalysis(def 2).
- the procedures, processes, methods, etc., of making and using secret writing, as codes or ciphers.
- anything written in a secret code, cipher, or the like.
Origin of cryptography
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
- the science or study of analysing and deciphering codes, ciphers, etc; cryptanalysis
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper
The science of coding and decoding messages so as to keep these messages secure. Coding (see encryption) takes place using a key that ideally is known only by the sender and intended recipient of the message.
The New Dictionary of Cultural Literacy, Third Edition Copyright © 2005 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.