OCB authenticated-encryption mode
E440827
OCB authenticated-encryption mode is a block cipher mode of operation that simultaneously provides data confidentiality and integrity with high efficiency and minimal overhead.
All labels observed (1)
| Label | Occurrences |
|---|---|
| OCB authenticated-encryption mode canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T4405001 — 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: OCB authenticated-encryption mode Context triple: [Phillip Rogaway, notableWork, OCB authenticated-encryption mode]
-
A.
AES-CCM
AES-CCM is an authenticated encryption mode that combines Counter (CTR) mode for confidentiality with CBC-MAC for integrity and authentication, commonly used in wireless and embedded security protocols.
-
B.
AES-GCM
AES-GCM is an authenticated encryption mode of the Advanced Encryption Standard that provides both data confidentiality and integrity, widely used in modern network and security protocols.
-
C.
OCB
OCB is the U.S. government–funded media organization that oversees broadcasts such as Radio and TV Martí aimed at audiences in Cuba.
-
D.
AES-Poly1305
AES-Poly1305 is an authenticated encryption scheme that pairs the AES block cipher with the Poly1305 message authentication code to provide both confidentiality and integrity.
-
E.
XChaCha20-Poly1305 AEAD construction
XChaCha20-Poly1305 AEAD construction is an authenticated encryption scheme that extends ChaCha20-Poly1305 with a longer nonce for improved security and robustness against nonce reuse.
- 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: OCB authenticated-encryption mode Target entity description: OCB authenticated-encryption mode is a block cipher mode of operation that simultaneously provides data confidentiality and integrity with high efficiency and minimal overhead.
-
A.
AES-CCM
AES-CCM is an authenticated encryption mode that combines Counter (CTR) mode for confidentiality with CBC-MAC for integrity and authentication, commonly used in wireless and embedded security protocols.
-
B.
AES-GCM
AES-GCM is an authenticated encryption mode of the Advanced Encryption Standard that provides both data confidentiality and integrity, widely used in modern network and security protocols.
-
C.
OCB
OCB is the U.S. government–funded media organization that oversees broadcasts such as Radio and TV Martí aimed at audiences in Cuba.
-
D.
AES-Poly1305
AES-Poly1305 is an authenticated encryption scheme that pairs the AES block cipher with the Poly1305 message authentication code to provide both confidentiality and integrity.
-
E.
XChaCha20-Poly1305 AEAD construction
XChaCha20-Poly1305 AEAD construction is an authenticated encryption scheme that extends ChaCha20-Poly1305 with a longer nonce for improved security and robustness against nonce reuse.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
authenticated encryption mode
ⓘ
block cipher mode of operation ⓘ |
| alsoKnownAs | OCB mode ⓘ |
| belongsTo | symmetric-key cryptography ⓘ |
| canBeUsedWith | AES block cipher NERFINISHED ⓘ |
| comparedTo | GCM mode in performance analyses ⓘ |
| competesWith |
CCM mode
ⓘ
EAX mode NERFINISHED ⓘ Galois/Counter Mode NERFINISHED ⓘ |
| definedOver | fixed-size blocks ⓘ |
| designedFor |
high efficiency
ⓘ
minimal overhead ⓘ |
| hadImpactOn | standardization debates for authenticated encryption ⓘ |
| hasGoal |
minimal expansion of ciphertext length
ⓘ
simple implementation ⓘ |
| hasProperty |
deterministic given key and nonce
ⓘ
nonce-based ⓘ online mode ⓘ parallelizable ⓘ single-pass design ⓘ |
| hasVersion |
OCB1
NERFINISHED
ⓘ
OCB2 NERFINISHED ⓘ OCB3 NERFINISHED ⓘ |
| introducedIn | early 2000s ⓘ |
| isSuitableFor |
high-throughput applications
ⓘ
network protocols ⓘ storage encryption ⓘ |
| optimizedFor |
low overhead per message
ⓘ
software implementation ⓘ |
| outputs |
authentication tag
ⓘ
ciphertext ⓘ |
| provides |
authenticated encryption
ⓘ
data confidentiality ⓘ data integrity ⓘ |
| requires |
secret key
ⓘ
unique nonce per key ⓘ |
| securityDependsOn | underlying block cipher security ⓘ |
| securityModel | provable security ⓘ |
| standsFor | Offset Codebook ⓘ |
| supports |
associated data
ⓘ
decryption ⓘ encryption ⓘ integrity verification ⓘ |
| uses |
block cipher primitive
ⓘ
offsets derived from block cipher outputs ⓘ |
| wasDesignedBy |
John Black
NERFINISHED
ⓘ
Mihir Bellare NERFINISHED ⓘ Phillip Rogaway NERFINISHED ⓘ |
| wasSubjectOf | patent protection ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: OCB authenticated-encryption mode Description of subject: OCB authenticated-encryption mode is a block cipher mode of operation that simultaneously provides data confidentiality and integrity with high efficiency and minimal overhead.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.