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RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2

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RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2

Summary

RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2 is a Request for Comments[1].

Key Facts

  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2 authored Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2 — author (P50): Alessandro Ghedini[2].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's instance of is recorded as Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2 — instance of (P31): Request for Comments[3].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's publisher is recorded as Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2 — publisher (P123): Internet Engineering Task Force[4].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's based on is recorded as Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2 — based on (P144): RFC 5246: The Transport Layer Security (TLS) Protocol Version 1.2[5].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's DOI is recorded as 10.17487/RFC9155[6].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's language of work or name is recorded as Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2 — language of work or name (P407): English[7].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's publication date is recorded as +2021-12-01T00:00:00Z[8].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's RfC ID is recorded as 9155[9].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's work available at URL is recorded as https://tools.ietf.org/html/rfc9155[10].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's title is recorded as Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2[11].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's author name string is recorded as L. Velvindron[12].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's author name string is recorded as K. Moriarty[13].
  • RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's DBLP publication ID is recorded as journals/rfc/rfc9155[14].

Body

Designation and Status

RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2's instance of is recorded as Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2 — instance of (P31): Request for Comments[3].

References

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

Direct Wikidata claims

  1. [3] ↑ . RFC Index. Retrieved . wikidata.org.
  2. [2] ↑ . RFC Index. Retrieved . wikidata.org.
  3. [4] ↑ . RFC Index. Retrieved . wikidata.org.
  4. [5] ↑ . 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] ↑ . RFC Index. Retrieved . wikidata.org.
  11. [12] ↑ . RFC Index. Retrieved . wikidata.org.
  12. [13] ↑ . RFC Index. Retrieved . wikidata.org.
  13. [14] ↑ . 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 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2. Retrieved May 3, 2026, from https://4ort.xyz/entity/rfc-9155-deprecating-md5-and-sha-1-signature-hashes-in-tls-1-2-and-dtls-1-2
MLA “RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/rfc-9155-deprecating-md5-and-sha-1-signature-hashes-in-tls-1-2-and-dtls-1-2.
BibTeX @misc{4ortxyz_rfc-9155-deprecating-md5-and-sha-1-signature-hashes-in-tls-1-2-and-dtls-1-2_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2}}, year = {2026}, url = {https://4ort.xyz/entity/rfc-9155-deprecating-md5-and-sha-1-signature-hashes-in-tls-1-2-and-dtls-1-2}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): RFC 9155: Deprecating MD5 and SHA-1 Signature Hashes in TLS 1.2 and DTLS 1.2 — https://4ort.xyz/entity/rfc-9155-deprecating-md5-and-sha-1-signature-hashes-in-tls-1-2-and-dtls-1-2 (retrieved 2026-05-03)

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