AES-CTR
E42568
AES-CTR is a widely used symmetric-key encryption mode that turns the AES block cipher into a fast, parallelizable stream cipher by encrypting successive counter values and XORing them with the plaintext.
All labels observed (3)
| Label | Occurrences |
|---|---|
| AES-CM | 1 |
| AES-CTR canonical | 1 |
| Advanced Encryption Standard Counter Mode | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T338765 — 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: AES-CTR Context triple: [ChaCha20, comparedWith, AES-CTR]
-
A.
ChaCha20
ChaCha20 is a modern stream cipher designed by Daniel J. Bernstein, widely used for its high performance and strong security in protocols like TLS.
-
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.
RC4 stream cipher
The RC4 stream cipher is a once-widely used symmetric key algorithm known for its simplicity and speed in software, but now considered insecure due to multiple discovered vulnerabilities.
-
D.
Advanced Encryption Standard
Advanced Encryption Standard is a widely used symmetric block cipher standard that secures digital data in applications ranging from wireless networks to government communications.
-
E.
Diffie–Hellman key exchange
Diffie–Hellman key exchange is a foundational cryptographic protocol that enables two parties to securely establish a shared secret over an insecure communication channel.
- 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: AES-CTR Target entity description: AES-CTR is a widely used symmetric-key encryption mode that turns the AES block cipher into a fast, parallelizable stream cipher by encrypting successive counter values and XORing them with the plaintext.
-
A.
ChaCha20
ChaCha20 is a modern stream cipher designed by Daniel J. Bernstein, widely used for its high performance and strong security in protocols like TLS.
-
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.
RC4 stream cipher
The RC4 stream cipher is a once-widely used symmetric key algorithm known for its simplicity and speed in software, but now considered insecure due to multiple discovered vulnerabilities.
-
D.
Advanced Encryption Standard
Advanced Encryption Standard is a widely used symmetric block cipher standard that secures digital data in applications ranging from wireless networks to government communications.
-
E.
Diffie–Hellman key exchange
Diffie–Hellman key exchange is a foundational cryptographic protocol that enables two parties to securely establish a shared secret over an insecure communication channel.
- F. None of above. chosen
Statements (51)
| Predicate | Object |
|---|---|
| instanceOf |
block cipher mode of operation
ⓘ
stream cipher mode ⓘ symmetric-key encryption mode ⓘ |
| advantage |
high performance in software
ⓘ
no padding required ⓘ simple implementation ⓘ |
| basedOnPrimitive | block cipher ⓘ |
| blockSize | 128 bits ⓘ |
| ciphertextExpansion | none ⓘ |
| classification | stream-cipher-like mode ⓘ |
| decryptionProcess | encrypts same counter values with AES and XORs with ciphertext ⓘ |
| disadvantage |
catastrophic failure on nonce reuse
ⓘ
no built-in authentication ⓘ |
| encryptionProcess | encrypts successive counter values with AES and XORs with plaintext ⓘ |
| encryptionType | symmetric-key ⓘ |
| errorPropagation | limited to corrupted blocks ⓘ |
| firstStandardizedYear | 2001 ⓘ |
| fullName |
AES-CTR
self-linksurface differs
ⓘ
surface form:
Advanced Encryption Standard Counter Mode
|
| introducedBy |
National Institute of Standards and Technology
ⓘ
surface form:
NIST
|
| isDeterministicWithFixedNonceAndKey | true ⓘ |
| isParallelizable | true ⓘ |
| isRandomAccess | true ⓘ |
| isSelfSynchronizing | false ⓘ |
| IVLength | variable ⓘ |
| IVType | nonce ⓘ |
| IVUniquenessRequired | true ⓘ |
| keySizesSupported |
128 bits
ⓘ
192 bits ⓘ 256 bits ⓘ |
| operationMode | counter mode ⓘ |
| providesConfidentiality | true ⓘ |
| providesIntegrity | false ⓘ |
| relatedMode |
AES-CCM
ⓘ
AES-GCM ⓘ |
| requiresIV | true ⓘ |
| requiresMACForIntegrity | true ⓘ |
| securityDependsOn |
AES security
ⓘ
nonce uniqueness ⓘ |
| standardizedIn | NIST SP 800-38A ⓘ |
| supportsParallelDecryption | true ⓘ |
| supportsParallelEncryption | true ⓘ |
| supportsPrecomputation | true ⓘ |
| useCase |
disk encryption (with tweaks)
ⓘ
high-throughput encryption ⓘ network protocols ⓘ parallel hardware implementations ⓘ |
| usedIn |
IPsec
ⓘ
surface form:
IPsec (in some profiles)
SSH (in some cipher suites) ⓘ TLS (in some cipher suites) ⓘ |
| usesCipher |
Advanced Encryption Standard
ⓘ
surface form:
AES
|
| vulnerableIfNonceReused | true ⓘ |
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: AES-CTR Description of subject: AES-CTR is a widely used symmetric-key encryption mode that turns the AES block cipher into a fast, parallelizable stream cipher by encrypting successive counter values and XORing them with the plaintext.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Secure Real-time Transport Protocol
this entity surface form:
AES-CM