Cryptography definition

Cryptography





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4 definitions found

From The Collaborative International Dictionary of English v.0.48 [gcide]:

  Cryptography \Cryp*tog"ra*phy\ (-f?), n. [Cf. F. cryptographie.]
     1. The act or art of writing in code or secret characters;
        also, secret characters, codes or ciphers, or messages
        written in a secret code.
        [1913 Webster +PJC]
  


     2. The science which studies methods for encoding messages so
        that they can be read only by a person who knows the
        secret information required for decoding, called the key;
        it includes {cryptanalysis}, the science of decoding
        encrypted messages without possessing the proper key, and
        has several other branches; see for example
        {steganography}.
        [PJC]

From WordNet (r) 2.0 [wn]:

  cryptography
       n 1: the science of analyzing and deciphering codes and ciphers
            and cryptograms [syn: {cryptanalysis}, {cryptanalytics},
             {cryptology}]
       2: act of writing in code or cipher [syn: {coding}, {secret
          writing}]

From Moby Thesaurus II by Grady Ward, 1.0 [moby-thes]:

  48 Moby Thesaurus words for "cryptography":
     cipher, code, coded message, coup de plume, criticism,
     cryptanalysis, cryptoanalysis, cryptoanalytics, cryptogram,
     cryptograph, cryptographer, cryptology, diagnostics, engrossment,
     epigraphy, exegetics, hermeneutics, ink spilling, inkslinging,
     inscription, invisible ink, lettering, lexicography,
     literary criticism, macrography, metoposcopy, micrography,
     oneirology, paleography, pathognomy, pen, pen-and-ink,
     pencil driving, physiognomics, physiognomy, scrivenery, scrivening,
     secret language, secret writing, semeiology, semeiotics,
     sympathetic ink, symptomatology, textual criticism, tropology,
     typewriting, typing, writing
  
  

From The Free On-line Dictionary of Computing (27 SEP 03) [foldoc]:

  cryptography
       
           The practise and study of {encryption} and
          {decryption} - encoding data so that it can only be decoded by
          specific individuals.  A system for encrypting and decrypting
          data is a cryptosystem.  These usually involve an {algorithm}
          for combining the original data ("{plaintext}") with one or
          more "keys" - numbers or strings of characters known only to
          the sender and/or recipient.  The resulting output is known as
          "{ciphertext}".
       
          The security of a cryptosystem usually depends on the secrecy
          of (some of) the keys rather than with the supposed secrecy of
          the {algorithm}.  A strong cryptosystem has a large range of
          possible keys so that it is not possible to just try all
          possible keys (a "{brute force}" approach).  A strong
          cryptosystem will produce ciphertext which appears random to
          all standard statistical tests.  A strong cryptosystem will
          resist all known previous methods for breaking codes
          ("{cryptanalysis}").
       
          See also {cryptology}, {public-key encryption}, {RSA}.
       
          {Usenet} newsgroups: {news:sci.crypt},
          {news:sci.crypt.research}.
       
          {FAQ} {MIT
          (ftp://rtfm.mit.edu/pub/usenet/news.answers/cryptography-faq/)}.
       
          {Cryptography glossary
          (http://www.io.com/~ritter/GLOSSARY.HTM#BruteForceAttack)}.
       
          {RSA cryptography glossary
          (http://www.rsasecurity.com/rsalabs/faq/glossary.html)}.
       
          {Cryptography, PGP, and Your Privacy
          (http://draco.centerline.com:8080/~franl/crypto.html)}.
       
          (2000-01-16)
       
       

















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