Primary definition
A data authenticator generated from the message, usually though cryptographic techniques, that is designed to reveal both accidental errors and intentional modifications of the data. In general, a cryptographic key is also required as an input.
Also known asMAC · Message Authentication Code · Data Authentication
1 sources cited4 related termsReviewed Aug 10, 2026
— NIST Election GlossaryView source
Understand more election terms clearly
Get one important election term explained each week, with authoritative sources, practical context and related definitions.
Free. One useful email each week. Unsubscribe anytime.Learn more about the ESG newsletter →
NIST
A data authenticator generated from the message, usually though cryptographic techniques, that is designed to reveal both accidental errors and intentional modifications of the data. In general, a cryptographic key is also required as an input.
NIST Election Glossary · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Message Authentication. In Election Security Glossary. Retrieved August 15, 2026, from https://electionsecurityglossary.com/glossary/message-authentication
Sources
1 cited · last checked Aug 10, 2026
01
NIST Election Glossary
NIST Election Glossary
Single-source
Get the weekly election term
Receive one cited, source-backed election explanation in your inbox each week.
Get election terms explained weekly →
Free · Nonpartisan · Unsubscribe anytime.