Serpent cipher
E663892
Serpent cipher is a symmetric-key block cipher and former AES finalist known for its strong security margin and conservative design based on a substitution–permutation network structure.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Serpent cipher canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7414770 — 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: Serpent cipher Context triple: [Substitution–permutation network, usedIn, Serpent cipher]
-
A.
Twofish
Twofish is a symmetric key block cipher known for its speed, flexibility, and strong security, and was a finalist in the competition to become the Advanced Encryption Standard (AES).
-
B.
Rijndael
Rijndael is a symmetric block cipher designed by Joan Daemen and Vincent Rijmen that was selected by NIST as the basis for the Advanced Encryption Standard (AES).
-
C.
Spritz cipher
Spritz cipher is a modern stream cipher and hash function designed by Ronald Rivest and Jacob Schuldt as a more secure and flexible successor to RC4.
-
D.
Salsa20
Salsa20 is a high-speed stream cipher designed by Daniel J. Bernstein, widely used in modern cryptography for its strong security and efficient software performance.
-
E.
RC5
RC5 is a symmetric-key block cipher designed by cryptographer Ronald L. Rivest, known for its simplicity, parameter flexibility, and use in various encryption applications.
- 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: Serpent cipher Target entity description: Serpent cipher is a symmetric-key block cipher and former AES finalist known for its strong security margin and conservative design based on a substitution–permutation network structure.
-
A.
Twofish
Twofish is a symmetric key block cipher known for its speed, flexibility, and strong security, and was a finalist in the competition to become the Advanced Encryption Standard (AES).
-
B.
Rijndael
Rijndael is a symmetric block cipher designed by Joan Daemen and Vincent Rijmen that was selected by NIST as the basis for the Advanced Encryption Standard (AES).
-
C.
Spritz cipher
Spritz cipher is a modern stream cipher and hash function designed by Ronald Rivest and Jacob Schuldt as a more secure and flexible successor to RC4.
-
D.
Salsa20
Salsa20 is a high-speed stream cipher designed by Daniel J. Bernstein, widely used in modern cryptography for its strong security and efficient software performance.
-
E.
RC5
RC5 is a symmetric-key block cipher designed by cryptographer Ronald L. Rivest, known for its simplicity, parameter flexibility, and use in various encryption applications.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
AES finalist
ⓘ
block cipher ⓘ substitution–permutation network ⓘ symmetric-key algorithm ⓘ |
| AESCompetitionRank | second place ⓘ |
| AESCompetitionStatus | finalist ⓘ |
| AESWinner | Rijndael ⓘ |
| bitSlicing | uses bitslice implementation ⓘ |
| blockSize | 128 bits ⓘ |
| category | modern block cipher ⓘ |
| comparedTo |
MARS
ⓘ
RC6 ⓘ Rijndael ⓘ Twofish ⓘ |
| competition | Advanced Encryption Standard process ⓘ |
| countryOfOrigin | United Kingdom ⓘ |
| designers |
Eli Biham
ⓘ
Lars Knudsen ⓘ Ross Anderson ⓘ |
| designGoal |
large security margin against differential cryptanalysis
ⓘ
large security margin against linear cryptanalysis ⓘ |
| designPhilosophy | conservative ⓘ |
| encryptionType | symmetric ⓘ |
| intendedUse | data encryption ⓘ |
| keySize |
128 bits
ⓘ
192 bits ⓘ 256 bits ⓘ |
| knownAttacks | no practical attacks on full 32-round cipher ⓘ |
| numberOfRounds | 32 ⓘ |
| performanceCharacteristic | optimized for software ⓘ |
| primaryPublicationVenue | AES candidate submission documents ⓘ |
| roundFunction | S-box based ⓘ |
| roundKeyGeneration | key schedule ⓘ |
| roundOperations |
S-box layer
ⓘ
key mixing ⓘ linear transformation ⓘ |
| roundsReducedSecurity | reduced-round variants have cryptanalytic results ⓘ |
| SBoxesCount | 8 ⓘ |
| SBoxSize | 4×4 ⓘ |
| securityMargin | high ⓘ |
| standardizationStatus | not selected as AES ⓘ |
| structure | substitution–permutation network ⓘ |
| supports |
128-bit blocks
ⓘ
128-bit keys ⓘ 192-bit keys ⓘ 256-bit keys ⓘ |
| usesKeySchedule | Serpent key schedule ⓘ |
| yearProposed | 1998 ⓘ |
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: Serpent cipher Description of subject: Serpent cipher is a symmetric-key block cipher and former AES finalist known for its strong security margin and conservative design based on a substitution–permutation network structure.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.