cryptography
- n the science of analyzing and deciphering codes and ciphers and cryptograms
- n act of writing in code or cipher
- In the '70s virtually all information relating to cryptography was under the control of the National Security Agency.
- Until quite recently, cryptography -- the science of making and breaking secret codes -- was, well, secret.
- In '70s America virtually all information relating to cryptography was under the control of the National Security Agency.