Word of the Day:

: the enciphering and deciphering of messages in secret code or cipher; also : the computerized encoding and decoding of information

Effective cryptography is essential for secure exchanges of sensitive information in cyberspace.

"At the same time, he was receiving extensive training in cryptography -- something he will still describe only in general terms, so as not to run afoul of the Official Secrets Act." -- From an article by Chris Wilson in Slate, May 17, 2011

More example sentences

For a word having to do with secrets, "cryptography" has a surprisingly transparent etymology. The word traces back to the Greek roots "kryptos," meaning "hidden," and "graphein," meaning "to write." "Kryptos" -- which in turn traces to the Greek verb "kryptein," meaning "to hide" -- is a root shared by several English words, including "crypt," "cryptic," and "encrypt." "Krypton," the name of a colorless gaseous element used especially in some fluorescent lamps and photography flashes, also comes from "kryptos." The name was chosen because the gas is rare and hard to find.