Primary definition
Document containing plain text and code equivalents in a systematic arrangement, or a technique of machine encryption using a word substitution technique.
Also known ascipher book · encryption book · substitution table · lookup table
1 sources cited4 related termsReviewed Aug 9, 2026
— Committee on National Security Systems Glossary CNSSI 4009-2015View source
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CNSSGC
Document containing plain text and code equivalents in a systematic arrangement, or a technique of machine encryption using a word substitution technique.
Committee on National Security Systems Glossary CNSSI 4009-2015 · 2024
Cite this term
Permanent URL · stable across revisions
Election Security Glossary. (2026). Codebook. In Election Security Glossary. Retrieved August 22, 2026, from https://electionsecurityglossary.com/glossary/codebook
Sources
1 cited · last checked Aug 9, 2026
01
Committee on National Security Systems Glossary CNSSI 4009-2015
Committee on National Security Systems Glossary CNSSI 4009-2015
Single-source
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