CBC-MAC
E663889
CBC-MAC (Cipher Block Chaining Message Authentication Code) is a cryptographic technique that uses a block cipher in CBC mode to generate a fixed-size tag for ensuring data integrity and authenticity.
All labels observed (4)
| Label | Occurrences |
|---|---|
| CBC-MAC canonical | 5 |
| Counter with CBC-MAC | 2 |
| Cipher Block Chaining Message Authentication Code | 1 |
| Cipher-based Message Authentication Code | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7414708 — 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: CBC-MAC Context triple: [AES-CCMP, authenticationMode, CBC-MAC]
-
A.
HMAC
HMAC (Hash-based Message Authentication Code) is a cryptographic construction that combines a secret key with a hash function to provide data integrity and authentication.
-
B.
Carter–Wegman MACs
Carter–Wegman MACs are a family of message authentication codes that use universal hashing combined with a secret key to provide efficient and provably secure authentication.
-
C.
PMAC message authentication code
PMAC (Parallelizable Message Authentication Code) is a cryptographic message authentication scheme designed for efficient, parallelizable computation of authentication tags over data.
-
D.
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.
-
E.
CBC-DES
CBC-DES is a cryptographic privacy protocol that uses the Data Encryption Standard in Cipher Block Chaining mode to provide confidentiality for SNMPv3 messages.
- 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: CBC-MAC Target entity description: CBC-MAC (Cipher Block Chaining Message Authentication Code) is a cryptographic technique that uses a block cipher in CBC mode to generate a fixed-size tag for ensuring data integrity and authenticity.
-
A.
HMAC
HMAC (Hash-based Message Authentication Code) is a cryptographic construction that combines a secret key with a hash function to provide data integrity and authentication.
-
B.
Carter–Wegman MACs
Carter–Wegman MACs are a family of message authentication codes that use universal hashing combined with a secret key to provide efficient and provably secure authentication.
-
C.
PMAC message authentication code
PMAC (Parallelizable Message Authentication Code) is a cryptographic message authentication scheme designed for efficient, parallelizable computation of authentication tags over data.
-
D.
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.
-
E.
CBC-DES
CBC-DES is a cryptographic privacy protocol that uses the Data Encryption Standard in Cipher Block Chaining mode to provide confidentiality for SNMPv3 messages.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
cryptographic primitive
ⓘ
message authentication code ⓘ symmetric-key algorithm ⓘ |
| assumes | adversary cannot forge tag without key ⓘ |
| basedOn | iterated application of a block cipher ⓘ |
| canBeExtendedBy |
CMAC to handle variable-length messages securely
ⓘ
XCBC-MAC to handle variable-length messages securely ⓘ |
| canShareKeyWith | encryption only with careful design ⓘ |
| category |
block-cipher-based MAC
ⓘ
symmetric cryptography ⓘ |
| designGoal | efficient MAC using existing block ciphers ⓘ |
| doesNotRequire | cryptographic hash function ⓘ |
| finalTagDerivedFrom | last ciphertext block ⓘ |
| fullName |
Cipher Block Chaining Message Authentication Code
ⓘ
linked to:
CBC-MAC
|
| generalizationOf | MACs derived from CBC mode ⓘ |
| influencedDesignOf |
CMAC
ⓘ
XCBC-MAC ⓘ |
| introducedAs | MAC construction from CBC encryption ⓘ |
| isNotSecureFor | variable-length messages without modifications ⓘ |
| isSecureFor | fixed-length messages ⓘ |
| mustUse | fixed, known message length per key for security ⓘ |
| notRecommendedFor | general-purpose variable-length message authentication ⓘ |
| operatesOn | fixed-length messages ⓘ |
| outputType |
MAC tag
ⓘ
fixed-size tag ⓘ |
| providesProperty |
data integrity
ⓘ
data origin authentication ⓘ |
| relatedTo |
CMAC
ⓘ
EMAC ⓘ XCBC-MAC ⓘ |
| requires |
secret key
ⓘ
secure key management ⓘ unique key for each security context ⓘ |
| requiresBlockSize | block size of underlying cipher ⓘ |
| securityDependsOn |
proper message length handling
ⓘ
underlying block cipher security ⓘ |
| standardizedIn | NIST SP 800-38B ⓘ |
| tagLength |
may be truncated for efficiency
ⓘ
often equal to block size ⓘ |
| typicalCipher |
3DES
ⓘ
AES ⓘ
linked to:
AES-128
|
| usedIn | legacy cryptographic protocols ⓘ |
| usesCipherType | block cipher ⓘ |
| usesMode | CBC mode ⓘ |
| usesOperation | XOR of plaintext block with previous ciphertext block ⓘ |
| vulnerableTo | length-extension attacks on variable-length messages ⓘ |
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: CBC-MAC Description of subject: CBC-MAC (Cipher Block Chaining Message Authentication Code) is a cryptographic technique that uses a block cipher in CBC mode to generate a fixed-size tag for ensuring data integrity and authenticity.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.