cryptanalysis > define
noun
- The science of analyzing and deciphering codes and ciphers and cryptograms.
- synonyms: cryptanalytics, cryptography, cryptology
by WordNet 3.0 © 2006 by Princeton University
(DoD) The steps and operations performed in converting encrypted messages into plain text without initial knowledge of the key employed in the encryption.
by Department of Defense Dictionary of Military and Associated Terms. 31 January 2011.