Dear @horde team,

SCRAM in Horde code: https://github.com/search?q=org%3Ahorde+scram&type=code

SCRAM-SHA-1 has done by Michael M Slusarz in 2015, thanks a lot!
- 
https://github.com/horde/Imap_Client/commit/10e5741039f6ef8c6b740eb6fc6a48936c6ecc09

When I look history: 
https://github.com/horde/Imap_Client/commits/master/lib/Horde/Imap/Client/Auth/Scram.php

Jan Schneider: https://github.com/yunosh
Michael M Slusarz: https://github.com/slusarz

In PHP, there is a lib:
- https://github.com/pear/Auth_SASL/blob/master/Auth/SASL/SCRAM.php

Can you add the support of more?

Thanks in advance.

Regards,

Neustradamus

Dear Horde team,

I know that you have already done a little a long time ago but can you 
add for IMAP/POP/SMTP and more, the supports of :
- SCRAM-SHA-1
- SCRAM-SHA-1-PLUS
- SCRAM-SHA-256
- SCRAM-SHA-256-PLUS
- SCRAM-SHA-512
- SCRAM-SHA-512-PLUS
- SCRAM-SHA3-512
- SCRAM-SHA3-512-PLUS

You can add too:
- SCRAM-SHA-224
- SCRAM-SHA-224-PLUS
- SCRAM-SHA-384
- SCRAM-SHA-384-PLUS

"When using the SASL SCRAM mechanism, the SCRAM-SHA-256-PLUS variant 
SHOULD be preferred over the SCRAM-SHA-256 variant, and SHA-256 
variants [RFC7677] SHOULD be preferred over SHA-1 variants [RFC5802]".

SCRAM-SHA-1(-PLUS):
- https://tools.ietf.org/html/rfc5802
- https://tools.ietf.org/html/rfc6120

SCRAM-SHA-256(-PLUS):
- https://tools.ietf.org/html/rfc7677 since 2015-11-02
- https://tools.ietf.org/html/rfc8600 since 2019-06-21: 
https://mailarchive.ietf.org/arch/msg/ietf-announce/suJMmeMhuAOmGn_PJYgX5Vm8lNA

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

-PLUS variants:
- RFC5056: On the Use of Channel Bindings to Secure Channels: 
https://tools.ietf.org/html/rfc5056
- RFC5929: Channel Bindings for TLS: https://tools.ietf.org/html/rfc5929
- Channel-Binding Types: 
https://www.iana.org/assignments/channel-binding-types/channel-binding-types.xhtml
- RFC9266: Channel Bindings for TLS 1.3: https://tools.ietf.org/html/rfc9266

IMAP:
- RFC9051: Internet Message Access Protocol (IMAP) - Version 4rev2: 
https://tools.ietf.org/html/rfc9051

LDAP:
- RFC5803: Lightweight Directory Access Protocol (LDAP) Schema for 
Storing Salted: Challenge Response Authentication Mechanism (SCRAM) 
Secrets: https://tools.ietf.org/html/rfc5803

HTTP:
- RFC7804: Salted Challenge Response HTTP Authentication Mechanism: 
https://tools.ietf.org/html/rfc7804

2FA:
- Extensions to Salted Challenge Response (SCRAM) for 2 factor 
authentication: https://tools.ietf.org/html/draft-melnikov-scram-2fa

IANA:
- Simple Authentication and Security Layer (SASL) Mechanisms: 
https://www.iana.org/assignments/sasl-mechanisms/sasl-mechanisms.xhtml

Linked to:
- https://github.com/scram-xmpp/info/issues/1

Thanks in advance