S-box
E663890
An S-box (substitution box) is a fundamental nonlinear component in many block ciphers that maps input bits to output bits to provide confusion and resist cryptanalysis.
All labels observed (5)
| Label | Occurrences |
|---|---|
| S-boxes | 2 |
| AES S-box | 1 |
| CAST-128 S-boxes | 1 |
| DES S-boxes | 1 |
| S-box canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T7414750 — 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: S-box Context triple: [Substitution–permutation network, hasPart, S-box]
-
A.
Feistel network
A Feistel network is a symmetric structure for building block ciphers that splits data into halves and repeatedly applies round functions to achieve secure encryption and decryption.
-
B.
Substitution–permutation network
A substitution–permutation network is a symmetric-key cryptographic design that secures data by repeatedly applying nonlinear substitutions and bitwise permutations to achieve confusion and diffusion.
-
C.
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).
-
D.
MixColumns
MixColumns is a core linear transformation step in the AES block cipher that mixes each column of the state matrix to provide diffusion and strengthen security.
-
E.
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).
- 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: S-box Target entity description: An S-box (substitution box) is a fundamental nonlinear component in many block ciphers that maps input bits to output bits to provide confusion and resist cryptanalysis.
-
A.
Feistel network
A Feistel network is a symmetric structure for building block ciphers that splits data into halves and repeatedly applies round functions to achieve secure encryption and decryption.
-
B.
Substitution–permutation network
A substitution–permutation network is a symmetric-key cryptographic design that secures data by repeatedly applying nonlinear substitutions and bitwise permutations to achieve confusion and diffusion.
-
C.
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).
-
D.
MixColumns
MixColumns is a core linear transformation step in the AES block cipher that mixes each column of the state matrix to provide diffusion and strengthen security.
-
E.
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).
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
cryptographic primitive
ⓘ
nonlinear component ⓘ substitution box ⓘ |
| canBe |
fixed
ⓘ
key-dependent ⓘ randomly generated ⓘ |
| canBeRepresentedAs |
lookup table
ⓘ
set of Boolean functions ⓘ truth table ⓘ |
| componentOf |
Feistel network
ⓘ
Substitution–Permutation Network ⓘ
linked to:
Substitution–permutation network
|
| designedTo | resist cryptanalysis ⓘ |
| fieldOfStudy |
cryptanalysis
ⓘ
symmetric-key cryptography ⓘ |
| hasDesignCriterion |
balanced output bits
ⓘ
bit independence criterion ⓘ good avalanche effect ⓘ high algebraic degree ⓘ high nonlinearity ⓘ low differential uniformity ⓘ low linear approximation probability ⓘ no fixed points ⓘ no opposite fixed points ⓘ strict avalanche criterion ⓘ |
| hasInputSize | n bits ⓘ |
| hasOutputSize | m bits ⓘ |
| hasProperty |
bitwise substitution
ⓘ
many-to-many mapping ⓘ nonlinear Boolean functions ⓘ nonlinearity ⓘ |
| maps | input bits to output bits ⓘ |
| mayBe |
bijective
ⓘ
non-bijective ⓘ |
| provides | confusion ⓘ |
| usedFor |
resistance to algebraic attacks
ⓘ
resistance to differential cryptanalysis ⓘ resistance to higher-order differential attacks ⓘ resistance to interpolation attacks ⓘ resistance to linear cryptanalysis ⓘ |
| usedIn | block cipher ⓘ |
| usedInCipher |
Advanced Encryption Standard
ⓘ
Blowfish ⓘ CAST-128 ⓘ
linked to:
CAST5
Camellia ⓘ Data Encryption Standard ⓘ GOST 28147-89 ⓘ KASUMI ⓘ PRESENT ⓘ Serpent ⓘ Twofish ⓘ |
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: S-box Description of subject: An S-box (substitution box) is a fundamental nonlinear component in many block ciphers that maps input bits to output bits to provide confusion and resist cryptanalysis.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: S-box
linked to: S-box
linked to: S-box