PBKDF2 Support

[Arran Cudbard-Bell]

> On Jul 26, 2017, at 9:55 PM, Adam Bishop <Adam.Bishop at jisc.ac.uk> wrote:
> 
> On 27 Jul 2017, at 00:19, Arran Cudbard-Bell <a.cudbardb at freeradius.org> wrote:
>> …so can anyone suggest what the common formats for PBKDF2 might be?
> 
> I've seen dollar separated fields in a lot of places.
> 
> I don't know of the canonical source for that format, but passlib has an implementation.
> 
> http://passlib.readthedocs.io/en/stable/lib/passlib.hash.pbkdf2_digest.html

$pbkdf2-sha256$8000$XAuBMIYQQogxRg$tRRlz8hYn63B9LYiCd6PRo6FMiunY9ozmMMI3srxeRE

which is similar, yet subtly different to:

Crypt::PBKDF2 (crypt)

$PBKDF2$HMACSHA1:1000:4q9OTg==$9Pb6bCRgnct/dga+4v4Lyv8x31s=

which is similar, yet subtly different to:

http://www.openldap.org/lists/openldap-technical/201311/msg00055.html

{PBKDF2}60000$Y6ZHtTTbeUgpIbIW0QDmDA$j/aU7jFKUSbH4UobNQDm9OEIwuw

*sigh*
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