How to compare in python an input value with an hashed value in mysql table?

[Chris Angelico]

On Wed, Jan 15, 2020 at 10:54 AM Dennis Lee Bieber
<wlfraed at ix.netcom.com> wrote:
>
> On Tue, 14 Jan 2020 10:02:08 -0800 (PST), Growth Hacking Formation
> <admin at formationgrowthhacking.com> declaimed the following:
>
>
> >####################
> >Hello @formationgrowthhacking,
> >thank you for your message and for using my plugin.
> >For license key hashing, I implemented the PHP native method hash_hmac(), using the sha256 algorithm.
> >You can check out the class which is responsible for encryption, decryption, and hashing here:
> >https://plugins.trac.wordpress.org/browser/license-manager-for-woocommerce/trunk/includes/Crypto.php
> >Let me know if this helped!
> >###########
> >
>
> https://www.php.net/manual/en/function.hash-hmac.php
> """
>  key
>
>     Shared secret key used for generating the HMAC variant of the message
> digest.
> """
> ... Which implies that one needs to know another key to generate the hash
> of the input data. I suspect the author of your database system will not
> reveal that key (check the source code referenced by the author and see if
> you can find a key for use in the hash function).
>

I had a squiz at the linked-to source code, and it looks like the
corresponding key is stored in a file. Whether that actually
constitutes an improvement in security, I can't say. But to be
compatible, you would have to read the same file.

ChrisA