Primary definition
A hash algorithm with the property that it is computationally infeasible 1) to find a message that corresponds to a given message digest, or 2) to find two different messages that produce the same message digest. Source: FIPS PUB 180-4 (adapted)
Also known asSHA · SHA hash · SHA family · SHA-1 · SHA-2 · SHA-3 · SHA256 · SHA512
2 sources cited4 related termsReviewed Aug 10, 2026
— Committee on National Security Systems Glossary CNSSI 4009-2015View source
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CNSSGC
A hash algorithm with the property that it is computationally infeasible 1) to find a message that corresponds to a given message digest, or 2) to find two different messages that produce the same message digest. Source: FIPS PUB 180-4 (adapted)
Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Secure Hash Algorithm (sha). In Election Security Glossary. Retrieved August 21, 2026, from https://electionsecurityglossary.com/glossary/secure-hash-algorithm-sha
Sources
2 cited · last checked Aug 10, 2026
01
Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015
High consensus
02
The Cyber Glossary
The Cyber Glossary
Multi-source
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