from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Computers Any of various mathematical techniques for encrypting and decrypting data in order to keep it private when transmitted or stored electronically.
  • noun The process or skill of communicating in or deciphering secret writings or ciphers.
  • noun Secret writing.

from The Century Dictionary.

  • noun The act or art of writing in secret characters.
  • noun A system of secret or occult characters; that which is written in cipher.

from the GNU version of the Collaborative International Dictionary of English.

  • noun The act or art of writing in code or secret characters; also, secret characters, codes or ciphers, or messages written in a secret code.
  • noun 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.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun The discipline concerned with communication security (eg, confidentiality of messages, integrity of messages, sender authentication, non-repudiation of messages, and many other related issues), regardless of the used medium such as pencil and paper or computers.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun act of writing in code or cipher
  • noun the science of analyzing and deciphering codes and ciphers and cryptograms


from Wiktionary, Creative Commons Attribution/Share-Alike License

crypto- + -graphy


  • “The cryptography is simply not fit for purpose,” security consultant Adam Laurie told the Telegraph.

    Hackers Crack London Tube’s Ticketing System | Disinformation

  • He also relates his subsequent work in cryptography with Steve Pohlig (the Pohlig-Hellman system) and others.

    Oral history interview with Martin Hellman

  • This approach is the brainchild of Silvio Micali, a professor at the Massachusetts Institute of Technology, and his colleague Ronald L. Rivest, a professor who is well known in cryptography circles as one of the technologists behind the creation of RSA Security, a global Internet security company.

    Smart Mobs » Blog Archive » New Micropayments Efforts

  • In security terms, he explained, cryptography is classed as a protective counter-measure.

    Homeland Insecurity

  • Defenders of PGP and other forms of encryption rallied behind Zimmerman and made his case a cause célèbre, arguing that the expression of ideas in cryptography, like any other form of expression, is protected by the First Amendment.

    The Reinvention of Privacy

  • PyPI package index alone has about 50 'cryptography'-tagged entries.

    Planet ActiveState

  • Characters as Alan Turing, Ron Rivest, Adi Shamir, Leonard Adleman, Phil Zimmermann, Whitfield Diffie e Martin Hellman appear when modern cryptography is described.

    Reflective Surface - The Code Book

  • At any rate, the asymmetry of one-way functions is a pretty powerful concept in cryptography, as well as other fields, but it’s by no means universal … salient

    Climate Change and Argumentative Fallacies

  • But you can solve the problem by using public-key cryptography, which is the kind of encryption you see on the Internet.

    The Omega Theory

  • We need password cryptography, not the re-used ones we tend to type ...

    Coffee Break: Aug. 11


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