NIST SP 800-38A

E233813

NIST Special Publication cryptography standard

NIST SP 800-38A is a NIST special publication that defines approved block cipher modes of operation for the Advanced Encryption Standard (AES), including methods for encryption and decryption in various security applications.

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All labels observed (1)

Label	Occurrences
NIST SP 800-38A canonical	8

How this entity was disambiguated

This entity first appeared as the object of triple T2114178 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.

NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07

Target entity: NIST SP 800-38A
Context triple: [AES-CTR, standardizedIn, NIST SP 800-38A]

A. NIST SP 800-38D
NIST SP 800-38D is a NIST special publication that specifies the Galois/Counter Mode (GCM) of operation for the Advanced Encryption Standard (AES) and provides guidelines for its secure use.
B. NIST SP 800-56A
NIST SP 800-56A is a NIST Special Publication that specifies approved methods for public-key establishment, including Diffie–Hellman–based key agreement schemes, for use in U.S. federal cryptographic systems.
C. NIST SP 800-56C
NIST SP 800-56C is a NIST Special Publication that provides recommendations for key derivation methods in key-establishment schemes used in cryptographic systems.
D. NIST SP 800-56B
NIST SP 800-56B is a NIST Special Publication that provides recommendations for cryptographic key establishment using RSA-based key transport and key agreement schemes.
E. FIPS 198-1
FIPS 198-1 is a U.S. federal information processing standard that specifies the security requirements and implementation details for the HMAC (Hash-based Message Authentication Code) algorithm.
F. None of above. chosen
G. Unsure - the case is ambiguous/there is not enough information to decide.

NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07

Target entity: NIST SP 800-38A
Target entity description: NIST SP 800-38A is a NIST special publication that defines approved block cipher modes of operation for the Advanced Encryption Standard (AES), including methods for encryption and decryption in various security applications.

A. NIST SP 800-38D
NIST SP 800-38D is a NIST special publication that specifies the Galois/Counter Mode (GCM) of operation for the Advanced Encryption Standard (AES) and provides guidelines for its secure use.
B. NIST SP 800-56A
NIST SP 800-56A is a NIST Special Publication that specifies approved methods for public-key establishment, including Diffie–Hellman–based key agreement schemes, for use in U.S. federal cryptographic systems.
C. NIST SP 800-56C
NIST SP 800-56C is a NIST Special Publication that provides recommendations for key derivation methods in key-establishment schemes used in cryptographic systems.
D. NIST SP 800-56B
NIST SP 800-56B is a NIST Special Publication that provides recommendations for cryptographic key establishment using RSA-based key transport and key agreement schemes.
E. FIPS 198-1
FIPS 198-1 is a U.S. federal information processing standard that specifies the security requirements and implementation details for the HMAC (Hash-based Message Authentication Code) algorithm.
F. None of above. chosen

Statements (45)

Predicate	Object
instanceOf	NIST Special Publication ⓘ cryptography standard ⓘ
addresses	error propagation characteristics of modes ⓘ requirements for counters in CTR mode ⓘ requirements for initialization vectors ⓘ security properties of block cipher modes ⓘ throughput and efficiency considerations of modes ⓘ
appliesTo	AES ⓘ linked to: Advanced Encryption Standard Advanced Encryption Standard ⓘ
countryOfOrigin	United States ⓘ linked to: United States of America
covers	confidentiality protection using block ciphers ⓘ
defines	approved block cipher modes of operation ⓘ decryption methods for block ciphers ⓘ encryption methods for block ciphers ⓘ
documentType	technical guideline ⓘ
focusesOn	block cipher modes of operation ⓘ
intendedUse	cryptographic module implementations ⓘ federal information systems ⓘ
language	English ⓘ
modeDefined	Cipher Block Chaining (CBC) mode ⓘ Cipher Feedback (CFB) mode ⓘ Counter (CTR) mode ⓘ Electronic Codebook (ECB) mode ⓘ Output Feedback (OFB) mode ⓘ
objective	standardize secure modes of operation for block ciphers ⓘ
partOfSeries	NIST Special Publication 800 series ⓘ linked to: NIST SP 800 series
provides	guidance on counter generation for CTR mode ⓘ guidance on handling partial blocks ⓘ guidance on initialization vectors ⓘ guidance on padding methods for block ciphers ⓘ
publishedBy	National Institute of Standards and Technology ⓘ
publisher	U.S. Department of Commerce ⓘ
relatedTo	AES ⓘ linked to: Advanced Encryption Standard FIPS 197 ⓘ linked to: Advanced Encryption Standard
scope	modes of operation for symmetric key block ciphers ⓘ
status	active recommendation for block cipher modes ⓘ
subjectArea	applied cryptography ⓘ information security ⓘ
targetAudience	cryptographic engineers ⓘ implementers of cryptographic libraries ⓘ security architects ⓘ
title	Recommendation for Block Cipher Modes of Operation: Methods and Techniques ⓘ
usedFor	design of cryptographic protocols ⓘ implementation of AES-based encryption systems ⓘ validation of cryptographic modules ⓘ