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Adiantum (cipher)

Adiantum is a cipher composition for disk encryption. It uses a new cipher construction called HBSH (hash, block cipher, stream cipher, hash), specifically choosing NH, 256-bit Advanced Encryption Standard (AES-256), (X)ChaCha12/ChaCha20, Poly1305 for the four elements. The version in Linux kernel preferentially uses XChaCha12, xchacha12,aes-adiantum.

Standards & Overview

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Topic orientation

Adiantum (cipher) at a glance

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Key facts & relationships

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Block sizes
no practical limit; intended for 4096-byte disk sectors
Designers
Paul Crowley and Eric Biggers at Google
First published
October 12, 2018; 7 years ago (2018-10-12)
Key sizes
8192 bits
Related to
HPolyC
Structure
HBSH (hash, block cipher, stream cipher, hash)

Topics to explore

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Overview

Advanced semantic analysis

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Adiantum (cipher)

Top relations

Block sizes · 1
Adiantum (cipher) → no practical limit; intended for 4096-byte disk sectors
Designers · 1
Adiantum (cipher) → Paul Crowley and Eric Biggers at Google
First published · 1
Adiantum (cipher) → October 12, 2018; 7 years ago (2018-10-12)
Key sizes · 1
Adiantum (cipher) → 8192 bits
Related to · 1
Adiantum (cipher) → HPolyC
Structure · 1
Adiantum (cipher) → HBSH (hash, block cipher, stream cipher, hash)

Important terminology Word statistics

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Important terminology

adiantum encryption cipher devices android google device nh uses specifically version linux kernel designed plaintext 10 aes mandatory disk hbsh

Entity relationships Subject–Predicate–Object triples

Extracted RDF-like relationships with confidence and source. The table includes structured facts and lower-confidence contextual relations.
SubjectPredicateObjectConfidenceSrc
Adiantum (cipher)Block sizesno practical limit; intended for 4096-byte disk sectors1.00infobox
Adiantum (cipher)DesignersPaul Crowley and Eric Biggers at Google1.00infobox
Adiantum (cipher)First publishedOctober 12, 2018; 7 years ago (2018-10-12)1.00infobox
Adiantum (cipher)Key sizes8192 bits1.00infobox
Adiantum (cipher)Related toHPolyC1.00infobox
Adiantum (cipher)StructureHBSH (hash, block cipher, stream cipher, hash)1.00infobox

Related concept clusters Concept neighborhoods

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    Connections between topic areas Semantic bridges

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    Map overview Semantic statistics

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    Adiantum (cipher)

    Nodes13
    Edges12
    Triples6
    Avg. degree1.85
    Density0.153846
    Components1
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