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  3. February 2020

Re: Creating/Verifying/Decoding JWT on IBM i

I thought I had written some SQL JWT code for the IBM i but it was for MariaDb, but you might find something useful here anyway https://bitbucket.org/fathert/mariadb-jwt/src/master/ there are a few syntax differences with the JSON functions (e.g. json_extract() is json_query() etc. when you need to pluck out values from the JWT) and in 7.4 there are some equivalent HASH_SHA***() functions on the IBM i to replace the ones I have used. I tested this code here https://jwt.io/ when I wrote it but I ended up not using JWTs for my app because I didn't like the fact that they can't be revoked from the server side.

One thing to note regarding your base-64 question, the base-64 in a JWT is URL compliant, so has some characters from normal base-64 replaced with URL compliant ones and also, the trailing = signs can be truncated which messes up some decoders, so my code adds them back.

Tim.


________________________________
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> on behalf of B Stone <bvstone@xxxxxxxxx>
Sent: 06 February 2020 21:59
To: Midrange Systems Technical Discussion <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: Re: Creating/Verifying/Decoding JWT on IBM i

Are they only using base64 or do they allow other algorithms? Looking for
mainly decoding to get the payload. I didn't really find any example of
that.

I can handle base64, it's if any other algorithms are used that would make
it a little trickier. I can do it in node if I have to, though.


On Thu, Feb 6, 2020 at 2:40 PM Niels Liisberg <nli@xxxxxxxxxxxxxxxxx> wrote:

You can take a look at the ILEastic project.

There is a jet example made in RPG

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tor. 6. feb. 2020 kl. 17.57 skrev B Stone <bvstone@xxxxxxxxx>:

Besides OSS or Java, has anyone run across anything that works with JWTs
on
the IBM i? C, RPG, SQL, etc?

Thanks!

Bradley V. Stone
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