NISTIR 7298 Revision 1, Glossary of Key Information Security Terms

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NIST IR 7298 Revision 1, Glossary of Key Information Security Terms Challenge-Response Protocol – An authentication protocol where the verifier sends the claimant a challenge (usually a random value or a nonce) that the claimant combines with a shared secret (often by hashing the challenge and secret together) to generate a response that is sent to the verifier. The verifier knows the shared secret and can independently compute the response and compare it with the response generated by the claimant. If the two are the same, the claimant is considered to have successfully authenticated himself. When the shared secret is a cryptographic key, such protocols are generally secure against eavesdroppers. When the shared secret is a password, an eavesdropper does not directly intercept the password itself, but the eavesdropper may be able to find the password with an off-line password guessing attack. SOURCE: SP 800-63 Check Word – Cipher text generated by cryptographic logic to detect failures in cryptography. SOURCE: CNSSI-4009 Checksum – Value computed on data to detect error or manipulation. SOURCE: CNSSI-4009 Pg 30
NIST IR 7298 Revision 1, Glossary of Key Information Security Terms Chief Information Officer (CIO) – Chief Information Security Officer – (CISO) Agency official responsible for: 1) Providing advice and other assistance to the head of the executive agency and other senior management personnel of the agency to ensure that information technology is acquired and information resources are managed in a manner that is consistent with laws, Executive Orders, directives, policies, regulations, and priorities established by the head of the agency; 2) Developing, maintaining, and facilitating the implementation of a sound and integrated information technology architecture for the agency; and 3) Promoting the effective and efficient design and operation of all major information resources management processes for the agency, including improvements to work processes of the agency. SOURCE: FIPS 200; Public Law 104-106, Sec. 5125(b) Agency official responsible for: 1) providing advice and other assistance to the head of the executive agency and other senior management personnel of the agency to ensure that information systems are acquired and information resources are managed in a manner that is consistent with laws, Executive Orders, directives, policies, regulations, and priorities established by the head of the agency; 2) developing, maintaining, and facilitating the implementation of a sound and integrated information system architecture for the agency; and 3) promoting the effective and efficient design and operation of all major information resources management processes for the agency, including improvements to work processes of the agency. Note: Organizations subordinate to federal agencies may use the term Chief Information Officer to denote individuals filling positions with similar security responsibilities to agency-level Chief Information Officers. SOURCE: CNSSI-4009; SP 800-53 See Senior Agency Information Security Officer. Cipher – Series of transformations that converts plaintext to ciphertext using the Cipher Key. SOURCE: FIPS 197 Any cryptographic system in which arbitrary symbols or groups of symbols, represent units of plain text, or in which units of plain text are rearranged, or both. SOURCE: CNSSI-4009 Pg 31
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NIST IR 7298, Glossary of Key Infor
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NISTIR 7298 Revision 1, Glossary of Key Information Security Terms

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