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RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling

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RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling

Summary

RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling is a Request for Comments[1].

Key Facts

  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling authored Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling — author (P50): Sean Turner[2].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling authored Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling — author (P50): Blake Ramsdell[3].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling authored Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling — author (P50): Jim Schaad[4].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's instance of is recorded as Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling — instance of (P31): Request for Comments[5].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's publisher is recorded as Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling — publisher (P123): Internet Engineering Task Force[6].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's DOI is recorded as 10.17487/RFC8550[7].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's language of work or name is recorded as Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling — language of work or name (P407): English[8].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's publication date is recorded as +2019-04-01T00:00:00Z[9].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's RfC ID is recorded as 8550[10].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's main subject is recorded as Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling — main subject (P921): S/MIME[11].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's work available at URL is recorded as https://tools.ietf.org/html/rfc8550[12].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's work available at URL is recorded as https://tools.ietf.org/rfc/rfc8550.txt[13].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's work available at URL is recorded as https://www.rfc-editor.org/rfc/rfc8550.txt[14].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's work available at URL is recorded as https://www.rfc-editor.org/pdfrfc/rfc8550.txt.pdf[15].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's number of pages is recorded as {'unit': '1', 'amount': '+29'}[16].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's replaces is recorded as Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling — replaces (P1365): RFC 5750: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 3.2 Certificate Handling[17].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's title is recorded as Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling[18].
  • RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's DBLP publication ID is recorded as journals/rfc/rfc8550[19].

Body

Designation and Status

RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling's instance of is recorded as Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling — instance of (P31): Request for Comments[5].

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [5] ↑ . RFC Index. Retrieved . wikidata.org.
  2. [2] ↑ . RFC Index. Retrieved . wikidata.org.
  3. [3] ↑ . RFC Index. Retrieved . wikidata.org.
  4. [4] ↑ . RFC Index. Retrieved . wikidata.org.
  5. [6] ↑ . RFC Index. Retrieved . wikidata.org.
  6. [7] ↑ . RFC Index. Retrieved . wikidata.org.
  7. [8] ↑ . RFC Index. Retrieved . wikidata.org.
  8. [9] ↑ . RFC Index. Retrieved . wikidata.org.
  9. [10] ↑ . RFC Index. Retrieved . wikidata.org.
  10. [11] ↑ . wikidata.org.
  11. [12] ↑ . RFC Index. Retrieved . wikidata.org.
  12. [13] ↑ . RFC Index. Retrieved . wikidata.org.
  13. [14] ↑ . RFC Index. Retrieved . wikidata.org.
  14. [15] ↑ . RFC Index. Retrieved . wikidata.org.
  15. [16] ↑ . RFC Index. Retrieved . wikidata.org.
  16. [17] ↑ . RFC Index. Retrieved . wikidata.org.
  17. [18] ↑ . RFC Index. Retrieved . wikidata.org.
  18. [19] ↑ . DBLP Dataset 2021-01-02. Retrieved . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling. Retrieved May 3, 2026, from https://4ort.xyz/entity/rfc-8550-secure-multipurpose-internet-mail-extensions-s-mime-version-4-0-certificate-handling
MLA “RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/rfc-8550-secure-multipurpose-internet-mail-extensions-s-mime-version-4-0-certificate-handling.
BibTeX @misc{4ortxyz_rfc-8550-secure-multipurpose-internet-mail-extensions-s-mime-version-4-0-certificate-handling_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling}}, year = {2026}, url = {https://4ort.xyz/entity/rfc-8550-secure-multipurpose-internet-mail-extensions-s-mime-version-4-0-certificate-handling}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): RFC 8550: Secure/Multipurpose Internet Mail Extensions (S/MIME) Version 4.0 Certificate Handling — https://4ort.xyz/entity/rfc-8550-secure-multipurpose-internet-mail-extensions-s-mime-version-4-0-certificate-handling (retrieved 2026-05-03)

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