# Implement jwt in Ignition 8.1

**URL:** <https://forum.inductiveautomation.com/t/implement-jwt-in-ignition-8-1/111351>\
**Category:** Ignition\
**Tags:** ignition81, scripting\
**Created:** [October 10, 2025, 2:15pm UTC](https://forum.inductiveautomation.com/t/implement-jwt-in-ignition-8-1/111351 "2025-10-10T14:15:14Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![flavien](https://avatars.discourse-cdn.com/v4/letter/f/f475e1/32.png) [@flavien](https://forum.inductiveautomation.com/u/flavien)\
**Post date:** [October 10, 2025, 2:15pm UTC](https://forum.inductiveautomation.com/t/implement-jwt-in-ignition-8-1/111351/1 "2025-10-10T14:15:14Z")

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Hi,

How can I implement jwt library or an equivalent in Ignition 8.1 ?

Thanks

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**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\
**Post date:** [October 10, 2025, 2:22pm UTC](https://forum.inductiveautomation.com/t/implement-jwt-in-ignition-8-1/111351/2 "2025-10-10T14:22:05Z")

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Have you tried dropping the java-jwt library into Ignition's install folder? (lib/core/common)

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**Author:** ![jspecht](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/jspecht/32/6465_2.png) [@jspecht](https://forum.inductiveautomation.com/u/jspecht)\
**Post date:** [October 10, 2025, 3:46pm UTC](https://forum.inductiveautomation.com/t/implement-jwt-in-ignition-8-1/111351/3 "2025-10-10T15:46:03Z")

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FWIW - Ignition uses [jose4j](https://bitbucket.org/b_c/jose4j/) which is distributed as a `common` dependency - should already be in `lib/core/common`. You could consider calling out to this library’s Java APIs for your JWT needs since it is already on the classpath.

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<div class="post-metadata">

**Author:** ![flavien](https://avatars.discourse-cdn.com/v4/letter/f/f475e1/32.png) [@flavien](https://forum.inductiveautomation.com/u/flavien)\
**Post date:** [October 14, 2025, 8:15am UTC](https://forum.inductiveautomation.com/t/implement-jwt-in-ignition-8-1/111351/4 "2025-10-14T08:15:31Z")

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OK I have a “jose4j-0.9.6.jar” file in my lib/core/common file.  
I can’t use RSA but only HMAC. I can’t import **`RsaJsonWebKey or`** `RsaKey`