Bennett–Brassard 1984 protocol
E422682
cryptographic protocol
key establishment protocol
quantum cryptography scheme
quantum key distribution protocol
The Bennett–Brassard 1984 protocol is the first quantum key distribution scheme, using quantum properties of photons to enable two parties to establish a shared secret key with security guaranteed by the laws of quantum mechanics.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Bennett–Brassard 1984 protocol canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T4227942 — 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: Bennett–Brassard 1984 protocol Context triple: [Charles H. Bennett, knownFor, Bennett–Brassard 1984 protocol]
-
A.
New Directions in Cryptography
New Directions in Cryptography is a landmark 1976 paper that introduced the concepts of public-key cryptography and digital signatures, fundamentally reshaping modern cryptography and secure communications.
-
B.
Merkle puzzles
Merkle puzzles are an early cryptographic protocol that introduced the concept of public-key exchange by allowing two parties to establish a shared secret over an insecure channel using computationally asymmetric “puzzle” problems.
-
C.
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.
-
D.
Deutsch–Jozsa algorithm
The Deutsch–Jozsa algorithm is a foundational quantum algorithm that demonstrates how quantum computation can solve certain decision problems exponentially faster than any classical deterministic algorithm.
-
E.
Secrecy, Authentication, and Public Key Systems
"Secrecy, Authentication, and Public Key Systems" is Ralph Merkle's influential doctoral thesis that helped lay the foundations of modern public-key cryptography and secure communication protocols.
- 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: Bennett–Brassard 1984 protocol Target entity description: The Bennett–Brassard 1984 protocol is the first quantum key distribution scheme, using quantum properties of photons to enable two parties to establish a shared secret key with security guaranteed by the laws of quantum mechanics.
-
A.
New Directions in Cryptography
New Directions in Cryptography is a landmark 1976 paper that introduced the concepts of public-key cryptography and digital signatures, fundamentally reshaping modern cryptography and secure communications.
-
B.
Merkle puzzles
Merkle puzzles are an early cryptographic protocol that introduced the concept of public-key exchange by allowing two parties to establish a shared secret over an insecure channel using computationally asymmetric “puzzle” problems.
-
C.
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.
-
D.
Deutsch–Jozsa algorithm
The Deutsch–Jozsa algorithm is a foundational quantum algorithm that demonstrates how quantum computation can solve certain decision problems exponentially faster than any classical deterministic algorithm.
-
E.
Secrecy, Authentication, and Public Key Systems
"Secrecy, Authentication, and Public Key Systems" is Ralph Merkle's influential doctoral thesis that helped lay the foundations of modern public-key cryptography and secure communication protocols.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
cryptographic protocol
ⓘ
key establishment protocol ⓘ quantum cryptography scheme ⓘ quantum key distribution protocol ⓘ |
| alsoKnownAs |
BB84
ⓘ
linked to:
BB84 quantum key distribution protocol
|
| application |
free-space quantum communication
ⓘ
secure key distribution over optical fiber ⓘ |
| basedOn |
Heisenberg uncertainty principle
ⓘ
linked to:
uncertainty principle
no-cloning theorem ⓘ quantum mechanics ⓘ |
| communicationChannel |
authenticated classical channel
ⓘ
quantum channel ⓘ |
| countryOfOrigin | Canada ⓘ |
| developer |
Charles H. Bennett
ⓘ
Gilles Brassard ⓘ |
| eavesdroppingEffect | introduces detectable error rate ⓘ |
| encodingRule |
+45 degree polarization encodes bit 0 in diagonal basis
ⓘ
-45 degree polarization encodes bit 1 in diagonal basis ⓘ horizontal polarization encodes bit 0 in rectilinear basis ⓘ vertical polarization encodes bit 1 in rectilinear basis ⓘ |
| field |
information security
ⓘ
quantum cryptography ⓘ quantum information theory ⓘ |
| goal |
detect eavesdropping
ⓘ
establish shared secret key ⓘ |
| hasAdversary | Eve ⓘ |
| hasParticipant |
Alice
ⓘ
Bob ⓘ |
| influenced |
development of practical quantum key distribution systems
ⓘ
later QKD protocols such as B92 ⓘ |
| keyType | symmetric key ⓘ |
| notablePublicationVenue | IEEE International Conference on Computers, Systems and Signal Processing (Bangalore, 1984) ⓘ |
| phase |
error correction phase
ⓘ
error estimation phase ⓘ privacy amplification phase ⓘ quantum transmission phase ⓘ sifting phase ⓘ |
| property |
first quantum key distribution scheme
ⓘ
non-orthogonal state encoding ⓘ prepare-and-measure protocol ⓘ |
| securityBasedOn | laws of quantum mechanics ⓘ |
| securityGuarantee |
information-theoretic security
ⓘ
unconditional security under ideal conditions ⓘ |
| typicalErrorThreshold | approximately 11 percent for individual attacks ⓘ |
| uses |
diagonal polarization basis
ⓘ
polarization states of photons ⓘ rectilinear polarization basis ⓘ single photons ⓘ two mutually unbiased bases ⓘ |
| yearProposed | 1984 ⓘ |
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: Bennett–Brassard 1984 protocol Description of subject: The Bennett–Brassard 1984 protocol is the first quantum key distribution scheme, using quantum properties of photons to enable two parties to establish a shared secret key with security guaranteed by the laws of quantum mechanics.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.