Glossary of Terms (Page 2)
CA - See certifying authority.
CAPI - Cryptographic Application Programming Interface.
Capstone - The U.S. government's project to develop a set of standards
for publicly available cryptography, as authorized by the Computer Security Act of 1987. See Clipper, DSA, DSS, and Skipjack.
certificate - In cryptography, an electronic document binding some pieces
of information together, such as a user's identity and public key. Certifying Authorities (CA's) provide certificates.
certificate revocation list - A list of certificates that have been
revoked before their expiration date.
Certifying Authority (CA) - A person or organization that creates
checksum - Used in error detection, a checksum is a computation done on
the message and transmitted with the message; similar to using parity bits.
chosen ciphertext attack - An attack where the cryptanalyst may choose
the ciphertext to be decrypted.
chosen plaintext attack - A form of cryptanalysis where the cryptanalyst
may choose the plaintext to be encrypted.
cipher - An encryption - decryption algorithm.
ciphertext - Encrypted data.
ciphertext-only attack - A form of cryptanalysis where the cryptanalyst
has some ciphertext but nothing else.
Clipper - Clipper is an encryption chip developed and sponsored by the
U.S. government as part of the Capstone project.
compression function - A function that takes a fixed length input and
returns a shorter, fixed length output. See also hash functions.
compromise - The united disclosure or discovery of
a cryptographic key or secret.
concatenate - To place two (or more) things together one directly after
the other. For example, treehouse is the concatenation of the words tree and house.
covert channel - A hidden communication medium. See also subliminal
CRL - Certificate Revocation List.
cryptanalysis - The art and science of breaking encryption or any form of cryptography. See attack.
cryptography - The art and science of using mathematics to secure information and create a high degree of trust in the electronic realm. See also public-key, symmetric-key, and threshold cryptography.
cryptology - The branch of mathematics concerned with cryptography and cryptanalysis.
cryptosystem - An encryption decryption algorithm (cipher), together with all possible plaintexts, ciphertexts and keys.