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#1 2018-02-07 11:07:46

Synchrotron
Member
From: Kyiv, Ukraine
Registered: 2009-01-08
Posts: 13

dovecot|glibc lost SHA256-CRYPT scheme

Hello.
I have found out after the recent update that SHA256-CRYPT scheme is no longer offered by dovecot.
This results in the following messages in the log:
auth-worker(7509): Error: sql(XXXX): Unknown scheme SHA256-CRYPT
And this can be verified by listing the schemes dovecot supports:
# doveadm pw -l
SHA1 SSHA512 BLF-CRYPT PLAIN HMAC-MD5 OTP SHA512 SHA RPA DES-CRYPT CRYPT SSHA MD5-CRYPT SKEY PLAIN-MD4 PLAIN-MD5 SCRAM-SHA-1 LANMAN SHA512-CRYPT CLEAR CLEARTEXT SSHA256 NTLM MD5 PBKDF2 SHA256 CRAM-MD5 PLAIN-TRUNC SMD5 DIGEST-MD5 LDAP-MD5
As can be seen SHA256-CRYPT is not there.
This is so weird I still think I am missing something.
According to the docs (https://wiki.dovecot.org/Authentication/PasswordSchemes), the scheme is implemented by the libc's crypt() function and this is even more confusing.
Does anybody have an idea what's happened or how to troubleshoot it?

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