RFC 5751
E197861
RFC 5751 is the Internet standards document that specifies the Secure/Multipurpose Internet Mail Extensions (S/MIME) protocol for secure email communication.
All labels observed (1)
| Label | Occurrences |
|---|---|
| RFC 5751 canonical | 3 |
How this entity was disambiguated
This entity first appeared as the object of triple T1711925 — 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: RFC 5751 Context triple: [S/MIME, definedIn, RFC 5751]
-
A.
RFC 2571
RFC 2571 was an earlier specification in the Simple Network Management Protocol (SNMP) framework that was later superseded and updated by RFC 3411.
-
B.
RFC 6557
RFC 6557 is an Internet Engineering Task Force (IETF) document that defines procedures and guidelines for the maintenance and distribution of the IANA time zone database.
-
C.
RFC 6052
RFC 6052 is an IETF standard that defines the IPv6 address format for representing IPv4 addresses, forming a core part of NAT64 and IPv4/IPv6 transition mechanisms.
-
D.
RFC 6410
RFC 6410 is an Internet Engineering Task Force (IETF) document that streamlines and updates the process for advancing technical specifications to Internet Standard status within the Internet Standards Process.
-
E.
RFC 3711
RFC 3711 is the IETF specification that defines the Secure Real-time Transport Protocol (SRTP), a framework for providing encryption, message authentication, and integrity for real-time audio and video over IP networks.
- 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: RFC 5751 Target entity description: RFC 5751 is the Internet standards document that specifies the Secure/Multipurpose Internet Mail Extensions (S/MIME) protocol for secure email communication.
-
A.
RFC 2571
RFC 2571 was an earlier specification in the Simple Network Management Protocol (SNMP) framework that was later superseded and updated by RFC 3411.
-
B.
RFC 6557
RFC 6557 is an Internet Engineering Task Force (IETF) document that defines procedures and guidelines for the maintenance and distribution of the IANA time zone database.
-
C.
RFC 6052
RFC 6052 is an IETF standard that defines the IPv6 address format for representing IPv4 addresses, forming a core part of NAT64 and IPv4/IPv6 transition mechanisms.
-
D.
RFC 6410
RFC 6410 is an Internet Engineering Task Force (IETF) document that streamlines and updates the process for advancing technical specifications to Internet Standard status within the Internet Standards Process.
-
E.
RFC 3711
RFC 3711 is the IETF specification that defines the Secure Real-time Transport Protocol (SRTP), a framework for providing encryption, message authentication, and integrity for real-time audio and video over IP networks.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
Internet standard
ⓘ
Request for Comments document ⓘ |
| abbreviation |
S/MIME
ⓘ
surface form:
S/MIME Version 3.2
|
| appliesTo |
Internet mail
ⓘ
MIME-based email systems ⓘ |
| area | Security Area ⓘ |
| category |
Internet mail
ⓘ
security protocol specification ⓘ |
| defines |
S/MIME message specification
ⓘ
application/pkcs7-mime MIME type ⓘ application/pkcs7-signature MIME type ⓘ application/x-pkcs7-mime MIME type ⓘ application/x-pkcs7-signature MIME type ⓘ format for secure MIME messages ⓘ use of CMS for email ⓘ |
| field |
computer networking
ⓘ
cryptography ⓘ email security ⓘ |
| focusesOn | end-to-end security for MIME data ⓘ |
| identifier | RFC 5751 self-link ⓘ |
| language | English ⓘ |
| obsoletedBy | RFC 8551 ⓘ |
| obsoletes |
RFC 1847
ⓘ
RFC 2311 ⓘ RFC 2633 ⓘ RFC 3851 ⓘ |
| organization | Internet Engineering Task Force ⓘ |
| protocolAbbreviation | S/MIME ⓘ |
| protocolSpecified |
S/MIME
ⓘ
surface form:
Secure/Multipurpose Internet Mail Extensions
|
| publicationYear | 2010 ⓘ |
| publishedBy | RFC Editor ⓘ |
| references | RFC 5652 ⓘ |
| relation | part of the S/MIME standards family ⓘ |
| securityProperty |
authentication
ⓘ
confidentiality ⓘ integrity ⓘ non-repudiation ⓘ |
| series |
RFCs
ⓘ
surface form:
Request for Comments
|
| specifies |
MIME content types for S/MIME
ⓘ
certificate handling for S/MIME ⓘ digital signature mechanisms for email ⓘ encryption mechanisms for email ⓘ security services for MIME entities ⓘ |
| standardizes | secure email communication using S/MIME ⓘ |
| status | Proposed Standard ⓘ |
| title |
S/MIME
ⓘ
surface form:
Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.2 Message Specification
|
| topic |
S/MIME
ⓘ
surface form:
Secure/Multipurpose Internet Mail Extensions
|
| updates |
S/MIME
ⓘ
surface form:
S/MIME Version 3.1
|
| uses |
PKCS #7
ⓘ
surface form:
Cryptographic Message Syntax
|
| workingGroup |
S/MIME
ⓘ
surface form:
S/MIME Working Group
|
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: RFC 5751 Description of subject: RFC 5751 is the Internet standards document that specifies the Secure/Multipurpose Internet Mail Extensions (S/MIME) protocol for secure email communication.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.