3DES
E123429
3DES (Triple DES) is a symmetric-key block cipher that applies the Data Encryption Standard (DES) algorithm three times to each data block to provide stronger encryption security.
All labels observed (5)
| Label | Occurrences |
|---|---|
| Triple DES | 2 |
| 3DES canonical | 1 |
| Data Encryption Standard | 1 |
| TDEA | 1 |
| Triple Data Encryption Algorithm | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1077096 — 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: 3DES Context triple: [IPsec, commonlyUsesAlgorithm, 3DES]
-
A.
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.
-
B.
RC2
RC2 is a symmetric-key block cipher designed by cryptographer Ronald L. Rivest and widely used in early Internet security applications.
-
C.
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.
-
D.
RC6
RC6 is a symmetric block cipher designed as a candidate for the Advanced Encryption Standard (AES), known for its simplicity, efficiency, and parameterized structure.
-
E.
AES-CTR
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.
- 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: 3DES Target entity description: 3DES (Triple DES) is a symmetric-key block cipher that applies the Data Encryption Standard (DES) algorithm three times to each data block to provide stronger encryption security.
-
A.
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.
-
B.
RC2
RC2 is a symmetric-key block cipher designed by cryptographer Ronald L. Rivest and widely used in early Internet security applications.
-
C.
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.
-
D.
RC6
RC6 is a symmetric block cipher designed as a candidate for the Advanced Encryption Standard (AES), known for its simplicity, efficiency, and parameterized structure.
-
E.
AES-CTR
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.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
block cipher
ⓘ
encryption algorithm ⓘ symmetric-key block cipher ⓘ |
| alsoKnownAs |
TDEA
ⓘ
linked to:
3DES
Triple DES ⓘ
linked to:
3DES
Triple Data Encryption Algorithm ⓘ
linked to:
3DES
|
| appliesAlgorithm | DES three times per data block ⓘ |
| basedOn | DES ⓘ |
| belongsToStandardFamily |
Data Encryption Algorithm (DEA) family
ⓘ
linked to:
Data Encryption Standard
|
| blockSize | 64 bits ⓘ |
| category | symmetric cryptography ⓘ |
| compatibleWith | existing DES hardware (with modifications) ⓘ |
| computationalCost | roughly three times that of DES ⓘ |
| deprecatedBy | NIST for many new applications ⓘ |
| designedTo | increase security over single DES ⓘ |
| encryptionMode |
EDE (encrypt-decrypt-encrypt)
ⓘ
EEE (encrypt-encrypt-encrypt) ⓘ |
| introducedAs | stronger alternative to DES without changing block size ⓘ |
| keySize |
112 bits (effective, two-key 3DES)
ⓘ
168 bits (nominal, three-key 3DES) ⓘ |
| notRecommendedFor | new designs requiring long-term security ⓘ |
| operatesOn | fixed-size data blocks ⓘ |
| requires | key management for multiple DES keys ⓘ |
| securityLevel |
approximately 112-bit security for three-key 3DES due to attacks
ⓘ
approximately 112-bit security for two-key 3DES ⓘ |
| specifiedIn |
ANSI X9.52
ⓘ
NIST SP 800-67 ⓘ |
| standardizedBy | NIST ⓘ |
| status |
being phased out in many standards
ⓘ
considered legacy algorithm ⓘ |
| supersededBy |
AES
ⓘ
linked to:
Advanced Encryption Standard
|
| supportsMode |
CBC
ⓘ
CFB ⓘ CTR ⓘ ECB ⓘ OFB ⓘ |
| usedFor |
PIN encryption in payment systems
ⓘ
data-at-rest encryption (legacy systems) ⓘ data-in-transit encryption (legacy protocols) ⓘ |
| usedIn | financial services industry ⓘ |
| usesKeyingOption |
Keying option 1 (three independent keys)
ⓘ
Keying option 2 (two independent keys, K1=K3) ⓘ Keying option 3 (K1=K2=K3, equivalent to DES) ⓘ |
| vulnerableTo | meet-in-the-middle attacks (theoretical) ⓘ |
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: 3DES Description of subject: 3DES (Triple DES) is a symmetric-key block cipher that applies the Data Encryption Standard (DES) algorithm three times to each data block to provide stronger encryption security.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: 3DES
linked to: 3DES
linked to: 3DES
linked to: 3DES
linked to: 3DES