Data Authentication Code, data authentication code
A specific U.S. Government standard [FP113] for a checksum that is computed by the Data Authentication Algorithm. Usage: a.k.a. Message Authentication Code [A9009].) (See: DAC.)
Senses
1 (N) /capitalized/
A specific U.S. Government standard [FP113] for a checksum that is computed by the Data Authentication Algorithm. Usage: a.k.a. Message Authentication Code [A9009].) (See: DAC.)
- IETF RFC 4949 (Internet Security Glossary)Jan 06, 2026RFC 4949 — Internet Security Glossary (Version 2)https://www.rfc-editor.org/rfc/rfc4949.txtRFC 4949 is published by the IETF Trust and marked as "Distribution of this memo is unlimited". Verify IETF Trust copyright/licensing terms for reuse.Source: IETF RFC 4949 (rfc-editor.org).
2 (D) /not capitalized/
Synonym for some kind of "checksum".
Deprecated Term: IDOCs SHOULD NOT use the uncapitalized form "data authentication code" as a synonym for any kind of checksum, regardless of whether or not the checksum is based on the Data Authentication Algorithm. The uncapitalized term can be confused with the Data Authentication Code and also mixes concepts in a potentially misleading way (see: authentication code).
- IETF RFC 4949 (Internet Security Glossary)Jan 06, 2026RFC 4949 — Internet Security Glossary (Version 2)https://www.rfc-editor.org/rfc/rfc4949.txtRFC 4949 is published by the IETF Trust and marked as "Distribution of this memo is unlimited". Verify IETF Trust copyright/licensing terms for reuse.Source: IETF RFC 4949 (rfc-editor.org).