RFC6331: Moving DIGEST-MD5 to Historic

[Neustradamus]

Dear @ruby-ldap team,

In first, I wish you a Happy New Year!

20 November 2008: CRAM-MD5 to Historic:

• https://tools.ietf.org/html/draft-ietf-sasl-crammd5-to-historic-00

29 June 2017: CRAM-MD5 to Historic:

• https://tools.ietf.org/html/draft-zeilenga-luis140219-crammd5-to-historic-00

July 2011: RFC6331: Moving DIGEST-MD5 to Historic:

• https://tools.ietf.org/html/rfc6331

August 2021: RFC9051: Internet Message Access Protocol (IMAP) - Version 4rev2:
"Replaced DIGEST-MD5 SASL mechanism with SCRAM-SHA-256. DIGEST-MD5 was deprecated."

• https://tools.ietf.org/html/rfc9051

I add same about SCRAM-MD5.

There are now:

• July 2010: RFC5802: Salted Challenge Response Authentication Mechanism (SCRAM): SASL and GSS-API Mechanisms: https://tools.ietf.org/html/rfc5802 (SCRAM-SHA-1 and SCRAM-SHA-1-PLUS)
• July 2010: RFC5803: Lightweight Directory Access Protocol (LDAP) Schema for Storing Salted: Challenge Response Authentication Mechanism (SCRAM) Secrets: https://tools.ietf.org/html/rfc5803
• November 2015: RFC7677: SCRAM-SHA-256 and SCRAM-SHA-256-PLUS: Simple Authentication and Security Layer (SASL) Mechanisms: https://tools.ietf.org/html/rfc7677

Soon:

• SCRAM-SHA-512(-PLUS): https://tools.ietf.org/html/draft-melnikov-scram-sha-512
• SCRAM-SHA3-512(-PLUS): https://tools.ietf.org/html/draft-melnikov-scram-sha3-512

[HarlemSquirrel]

Thank you for opening this! As someone who is not actively using this gem with any projects it is tough for me to say what impact this might have on projects using this library.

I would love to get some more eyes on this from the community.