| (I) The mathematical science that deals with transforming data to
render its meaning unintelligible (i.e., to hide its semantic
content), prevent its undetected alteration, or prevent its
unauthorized use. If the transformation is reversible,
cryptography also deals with restoring encrypted data to
intelligible form. (See: cryptology, steganography.)
(O) "The discipline which embodies principles, means, and methods
for the transformation of data in order to hide its information
content, prevent its undetected modification and/or prevent its
unauthorized use. . . . Cryptography determines the methods used
in encipherment and decipherment." [I7498 Part 2]
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