Breaking
The finding of a key code, crack it, ie to decode a message encrypted and secure his release "in the clear."
CAST
Algorithm Encryption in blocks of 64 bits using 64-bit key, six S-boxes with 8-bit input and 32 output, developed in Canada by Carlisle Adams and Stafford Tavares.
Catadioptric
Respect to both catoptrics (laws of reflection light) And the diopter (laws of refraction).
A catadioptric lens is composed of both mirrors (concave in general) and lentils. Several families telescopes are of this type: Cassegrain, Schmidt-Cassegrain, Maksutov, Ritchey-Chretien. The main interest is to provide a focal length longer than the tube, or, at equal length, a more compact instrument.
A reflector means reflecting the system usually mounted on vehicles, comprising a multitude of small lenses applied against a mirror. It reflects light in much the direction from which it comes.
Catchall
These retrieve e-mails that are sent to a nonexistent address.
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