On 18.09.2018 19:33, Gilles Chehade wrote:
On Tue, Sep 18, 2018 at 10:06:49AM +0300, Reio Remma wrote:
Hello!
I'm curious as to what determines the password scheme used by OpenSMTPD on a
Linux system (CentOS 7 in my case).
that's an easy one:
OpenSMTPD uses the crypt() function provided by your system and does not
care about the password scheme used as this is a system-specific detail.
On modern systems the crypt() function encodes the algorithm, rounds and
salt as a prefix to the encrypted password, as shown below:
$2b$09$fEv/zNZ/5hELpDH3Vq93AuygRLnySIcNXH78rq9WxPPbZJxmcdk5m
| | | |
| | | |__ encrypted password
| | |__ begining of salt
| |__ beginning of rounds
|__ beginning of cipher
But this encoding is only valid for my operating system, yours will have
a different one and the only thing you need to care about is if password
was generated using the same crypt() function that will be used validate
it.
I suggest your read the crypt(3) and passwd(1) man pages of your system.
Thanks for your reply. :)
I was just reading up whilst my son was in his football practice and I'm
about to see if I can add a few hundred thousand more rounds to the
SHA512 that CentOS is using.
Thanks,
Reio
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