Errors when PBKDF2 strings contain dots

Alan DeKok aland at
Tue Aug 3 19:23:50 CEST 2021

On Aug 3, 2021, at 12:14 PM, Jason Alderfer <jha2 at> wrote:
> When using the Python passlib module to generate PBKDF2 password hashes,
> the resulting values may contain a "." which causes FreeRADIUS 3.0.23 to
> fail to decode them.  I am assuming a bug in FreeRADIUS but I suppose
> another possibility would be that Python's passlib is not conforming to
> some encoding standard that FreeRADIUS expects.

  The encoding should be base64.  The '.' character is not used in base64.

  It looks like the Python library is broken.

  Alan DeKok.

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