ChaCha20
E6785
ChaCha20 is a modern stream cipher designed by Daniel J. Bernstein, widely used for its high performance and strong security in protocols like TLS.
All labels observed (5)
| Label | Occurrences |
|---|---|
| ChaCha20 canonical | 12 |
| ChaCha20 stream cipher | 3 |
| ChaCha20 and Poly1305 for IETF Protocols | 2 |
| ChaCha stream cipher family | 1 |
| ChaCha20-Poly1305 | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T63833 — 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.
Target entity: ChaCha20 Context triple: [TLS, supportsAlgorithmFamily, ChaCha20]
-
A.
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.
-
B.
HTTP/3
HTTP/3 is the third major version of the Hypertext Transfer Protocol, built on the QUIC transport protocol to provide faster, more reliable, and secure web communication.
-
C.
IEEE 802.1AE MACsec standard
The IEEE 802.1AE MACsec standard is a network security protocol that provides data confidentiality, integrity, and origin authenticity for Ethernet traffic at the media access control (MAC) layer.
-
D.
RSA
RSA is a widely used public-key cryptographic algorithm that enables secure key exchange and digital signatures in many internet security protocols.
-
E.
TLS
TLS (Transport Layer Security) is a cryptographic protocol that secures data transmitted over networks by providing encryption, authentication, and integrity between communicating applications.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: ChaCha20 Target entity description: ChaCha20 is a modern stream cipher designed by Daniel J. Bernstein, widely used for its high performance and strong security in protocols like TLS.
-
A.
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.
-
B.
HTTP/3
HTTP/3 is the third major version of the Hypertext Transfer Protocol, built on the QUIC transport protocol to provide faster, more reliable, and secure web communication.
-
C.
IEEE 802.1AE MACsec standard
The IEEE 802.1AE MACsec standard is a network security protocol that provides data confidentiality, integrity, and origin authenticity for Ethernet traffic at the media access control (MAC) layer.
-
D.
RSA
RSA is a widely used public-key cryptographic algorithm that enables secure key exchange and digital signatures in many internet security protocols.
-
E.
TLS
TLS (Transport Layer Security) is a cryptographic protocol that secures data transmitted over networks by providing encryption, authentication, and integrity between communicating applications.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
cryptographic primitive
ⓘ
stream cipher ⓘ symmetric-key algorithm ⓘ |
| AEADName |
Poly1305
ⓘ
surface form:
ChaCha20-Poly1305
|
| basedOn |
ChaCha20
self-linksurface differs
ⓘ
surface form:
ChaCha stream cipher family
Salsa20 ⓘ |
| blockFunctionSize | 512-bit ⓘ |
| category | software-oriented cipher ⓘ |
| cipherSuiteName |
TLS_AES_128_CCM_8_SHA256 (variant context)
ⓘ
TLS_ECDHE_ECDSA_WITH_CHACHA20_POLY1305_SHA256 ⓘ TLS_ECDHE_RSA_WITH_CHACHA20_POLY1305_SHA256 ⓘ |
| comparedWith |
AES-CTR
ⓘ
Salsa20 ⓘ |
| counterSize | 32-bit ⓘ |
| cryptanalysisStatus | no practical attacks known on full 20-round cipher as of 2024 ⓘ |
| designer | Daniel J. Bernstein ⓘ |
| designerAffiliation | University of Illinois at Chicago ⓘ |
| firstPublished | 2008 ⓘ |
| formsAEADWith | Poly1305 ⓘ |
| IANAName |
Poly1305
ⓘ
surface form:
CHACHA20-POLY1305
|
| keySize | 256-bit ⓘ |
| license | public domain ⓘ |
| nonceSize | 96-bit ⓘ |
| property |
designed for high performance in software
ⓘ
does not require hardware acceleration for good performance ⓘ resistant to cache-timing attacks in typical implementations ⓘ suitable for mobile devices ⓘ uses 4x4 matrix state ⓘ |
| roundCount | 20 ⓘ |
| securityGoal | confidentiality ⓘ |
| securityLevel | 128-bit security ⓘ |
| specifiedWith | Poly1305 ⓘ |
| standardizedIn |
RFC 7539
ⓘ
RFC 8439 ⓘ |
| stateSize | 16 32-bit words ⓘ |
| status |
publicly analyzed
ⓘ
widely deployed ⓘ |
| usedInProtocol |
Noise protocol framework
ⓘ
QUIC ⓘ SSH ⓘ TLS 1.2 ⓘ RFC 8446 ⓘ
surface form:
TLS 1.3
IPsec ⓘ
surface form:
WireGuard
|
| usesOperation |
add-rotate-xor (ARX)
ⓘ
bitwise XOR ⓘ bitwise rotation ⓘ modular addition ⓘ |
| weakerVariant |
ChaCha12
ⓘ
ChaCha8 ⓘ |
| wordSize | 32-bit ⓘ |
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.
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.
Subject: ChaCha20 Description of subject: ChaCha20 is a modern stream cipher designed by Daniel J. Bernstein, widely used for its high performance and strong security in protocols like TLS.
Referenced by (19)
Full triples — surface form annotated when it differs from this entity's canonical label.