SDES
E127264
SDES (Session Description Protocol Security Descriptions) is a key management mechanism used to negotiate and convey cryptographic parameters for securing media streams in real-time communication protocols.
All labels observed (2)
How this entity was disambiguated
This entity first appeared as the object of triple T1096771 — 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: SDES Context triple: [Secure Real-time Transport Protocol, commonlyUsedWith, SDES]
-
A.
3DES
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.
-
B.
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.
-
C.
RC2
RC2 is a symmetric-key block cipher designed by cryptographer Ronald L. Rivest and widely used in early Internet security applications.
-
D.
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.
-
E.
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.
- 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: SDES Target entity description: SDES (Session Description Protocol Security Descriptions) is a key management mechanism used to negotiate and convey cryptographic parameters for securing media streams in real-time communication protocols.
-
A.
3DES
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.
-
B.
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.
-
C.
RC2
RC2 is a symmetric-key block cipher designed by cryptographer Ronald L. Rivest and widely used in early Internet security applications.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
key management mechanism
ⓘ
security mechanism ⓘ |
| abbreviationFor |
Session Description Protocol
ⓘ
surface form:
Session Description Protocol Security Descriptions
|
| associatedWith |
RTP
ⓘ
Session Initiation Protocol ⓘ
surface form:
SIP
real-time communication frameworks ⓘ |
| category |
key management for RTP
ⓘ
media security ⓘ |
| comparedWith |
DTLS-SRTP
ⓘ
MIKEY ⓘ |
| conveys |
SRTP parameters
ⓘ
crypto suites ⓘ encryption keys ⓘ |
| definedIn | SDP ⓘ |
| deployment | legacy VoIP systems ⓘ |
| deploymentTrend | being replaced by DTLS-SRTP in modern systems ⓘ |
| designGoal | simple key negotiation using SDP ⓘ |
| fullName |
Session Description Protocol
ⓘ
surface form:
Session Description Protocol Security Descriptions
|
| negotiates |
authentication parameters for SRTP
ⓘ
cipher algorithms for SRTP ⓘ key lifetime parameters ⓘ |
| notResponsibleFor | signaling channel security ⓘ |
| operatesAtLayer | application layer ⓘ |
| purpose |
convey cryptographic parameters
ⓘ
negotiate cryptographic parameters ⓘ secure media streams ⓘ |
| relatedTo |
SRTP
ⓘ
SRTP for secure media transport ⓘ
surface form:
Secure Real-time Transport Protocol
|
| requires |
signaling channel confidentiality
ⓘ
signaling channel integrity ⓘ |
| scope | media-plane security parameters ⓘ |
| securityLimitation |
depends on signaling channel protection
ⓘ
keys exposed to signaling path ⓘ |
| securityProperty | provides media confidentiality when used with SRTP ⓘ |
| specifiedFor | offer/answer model in SDP ⓘ |
| status | considered less secure than DTLS-SRTP ⓘ |
| threat |
key disclosure on compromised signaling servers
ⓘ
man-in-the-middle attacks on signaling ⓘ |
| transportMechanism | in-band via SDP ⓘ |
| usedFor | SRTP key management ⓘ |
| usedIn | real-time communication protocols ⓘ |
| usedInContext |
VoIP
ⓘ
real-time multimedia sessions ⓘ video conferencing ⓘ |
| usesProtocol | Session Description Protocol ⓘ |
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: SDES Description of subject: SDES (Session Description Protocol Security Descriptions) is a key management mechanism used to negotiate and convey cryptographic parameters for securing media streams in real-time communication protocols.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Secure Real-time Transport Protocol