Watchguard Firebox X1000 Reference Manual page 127

Reference Guide
coprocessor
A separate processor designed to assist in specific functions, such
as handling complex mathematics or graphics, and to temporarily
reduce the workload of the microprocessor.
corporate signing key
A public key that is designated by the security officer of a
corporation as the system-wide key that all corporate users trust
to sign other keys.
CPU (central processing unit)
The microprocessor chip that interprets and carries out
instructions. Also, simply, a term for a computer.
cracker
A codebreaker; a person who attempts to break encryption,
software locks, or network security. Can also be used as a
synonym for hacker.
CRL
See certificate revocation list.
cross-certification
Two or more organizations or certificate authorities that share
some level of trust.
crossover cable
A cable in which the receive and transmit lines (input and output)
are crossed. Crossover cables are necessary to connect hubs.
cryptanalysis
The art or science of transferring cipher text into plain text
without initial knowledge of the key used to encrypt the plain
text.
CRYPTOCard
An authentication system that uses an offline card to hash
encryption keys, which increases their safety against
unauthorized decryption.
cryptography
The art and science of creating messages that have some
combination of being private, signed, and unmodified with non-
repudiation.
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