# Ignition v8.1.47 : custom module is giving error related to "bouncycastle" **URL:** \ **Category:** Module Development\ **Tags:** ignition81\ **Created:** [April 21, 2025, 10:55pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359 "2025-04-21T22:55:11Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![Shyam\_Sundar\_Ashok](https://avatars.discourse-cdn.com/v4/letter/s/cc9497/32.png) [@Shyam\_Sundar\_Ashok](https://forum.inductiveautomation.com/u/Shyam_Sundar_Ashok)\ **Post date:** [April 21, 2025, 10:55pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/1 "2025-04-21T22:55:11Z")
Hi , I am having issue with my custom ignition module [Build a Module | Ignition SDK Programmer's Guide](https://www.sdk-docs.inductiveautomation.com/docs/getting-started/create-a-module/build-a-module/) I built a custom ignition module in Maven with and as 8.1.0-SNAPSHOT . My module works fine with Ignition v8.1.37. But with Ignition v8.1.47 , my module is giving the below error “java.lang.ClassCastException: class org.bouncycastle.asn1.DLTaggedObject cannot be cast to class org.bouncycastle.asn1.ASN1ApplicationSpecific (org.bouncycastle.asn1.DLTaggedObject is in unnamed module of loader 'app'; org.bouncycastle.asn1.ASN1ApplicationSpecific is in unnamed module of loader com.inductiveautomation.ignition.gateway.modules.ModuleClassLoader)” I tried building my module with and as 8.1.47 and 8.1.37 . Still getting the same above error when this module is installed in Ignition v8.1.47 I do not use this “bouncycastle” in my module. Looks like Ignition is using it internally. Looks like in Ignition 8.1.44 there was the below update “Security :Upgraded bouncy castle library from 1.69 to 1.78.1 “ As mentioned here [Ignition Release Notes for Version 8.1.44 | Inductive Automation](https://inductiveautomation.com/downloads/releasenotes/8.1.44) Can you provide a solution for this issue ? ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 21, 2025, 10:58pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/2 "2025-04-21T22:58:03Z")
Can you provide full logs and/or stack trace? It may also be necessary to share your module. ---
**Author:** ![Shyam\_Sundar\_Ashok](https://avatars.discourse-cdn.com/v4/letter/s/cc9497/32.png) [@Shyam\_Sundar\_Ashok](https://forum.inductiveautomation.com/u/Shyam_Sundar_Ashok)\ **Post date:** [April 22, 2025, 2:30pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/3 "2025-04-22T14:30:29Z")
This is the entire log that get printed in Ignition logs when I invoke my module code from my Ignition code. I don't think i can share the entire module code in this open forum as the code is confidential to my organization. Can i reach out to the paid support? I reached out to them yesterday and got a reply that the paid support does not support any module related questions. Also i don’t think you need my module code. My module does NOT use the "bouncycastle" library and the module works fine in v8.1.37. Only issue is with higher version of Ignition v8.1.47. I think this issue can be replicated with any module built with maven in Ignition v8.1.47. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 22, 2025, 2:45pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/4 "2025-04-22T14:45:27Z")
There is no paid module support, it's forum + figure it out. Show me just the structural file contents of your module, e.g. ```python kevin@fedora ~/Downloads> unzip -l Modbus-Server-Driver-Module-signed.modl Archive: Modbus-Server-Driver-Module-signed.modl Length Date Time Name --------- ---------- ----- ---- 1464 11-14-2024 23:42 certificates.p7b 65896 11-14-2024 23:42 msd-gateway-1.0.0.jar 587 11-14-2024 23:42 module.xml 13183 11-14-2024 23:42 byteops-0.1.1.jar 165185 11-14-2024 23:42 modbus-2.0.0.jar 46867 11-14-2024 23:42 modbus-tcp-2.0.0.jar 1859 11-14-2024 23:42 signatures.properties --------- ------- 295041 7 files ``` ---
**Author:** ![Shyam\_Sundar\_Ashok](https://avatars.discourse-cdn.com/v4/letter/s/cc9497/32.png) [@Shyam\_Sundar\_Ashok](https://forum.inductiveautomation.com/u/Shyam_Sundar_Ashok)\ **Post date:** [April 22, 2025, 2:45pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/5 "2025-04-22T14:45:47Z")
I just realized that in my original post it cut off some of the details . Below is the details that got cut : I built a custom ignition module in Maven with “ignition-platform-version” and “ignition-sdk-version\>as 8.1.0-SNAPSHOT” . My module works fine with Ignition v8.1.37. I tried building my module with “ignition-platform-version” and “ignition-sdk-version” as 8.1.47 and 8.1.37 . And this site is just restricting from posting any details . So many checks that feel restrictive to post in this forum. Please address this issue as well ---
**Author:** ![Shyam\_Sundar\_Ashok](https://avatars.discourse-cdn.com/v4/letter/s/cc9497/32.png) [@Shyam\_Sundar\_Ashok](https://forum.inductiveautomation.com/u/Shyam_Sundar_Ashok)\ **Post date:** [April 22, 2025, 2:53pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/6 "2025-04-22T14:53:20Z")
This is the structural file contents of my module : ```python Length Date Time Name --------- ---------- ----- ---- 4540730 2025-04-21 15:26 bcprov-jdk15to18-1.68.jar 819996 2025-04-21 15:26 jcifs-ng-2.1.6.jar 325613 2025-04-21 15:26 jetty-client-9.4.44.v20210927.jar 224574 2025-04-21 15:26 jetty-http-9.4.44.v20210927.jar 178897 2025-04-21 15:26 jetty-io-9.4.44.v20210927.jar 581520 2025-04-21 15:26 jetty-util-9.4.44.v20210927.jar 1482 2025-04-21 15:26 module.xml 4462 2025-04-21 15:26 scripting-function-client-8.1.37-SNAPSHOT.jar 4555 2025-04-21 15:26 scripting-function-common-8.1.37-SNAPSHOT.jar 3560 2025-04-21 15:26 scripting-function-designer-8.1.37-SNAPSHOT.jar 9071 2025-04-21 15:26 scripting-function-gateway-8.1.37-SNAPSHOT.jar 41205 2025-04-21 15:26 slf4j-api-1.7.24.jar --------- ------- 6735665 12 files ``` ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 22, 2025, 2:57pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/7 "2025-04-22T14:57:19Z")
> [@Shyam\_Sundar\_Ashok](#): > > `4540730 2025-04-21 15:26 bcprov-jdk15to18-1.68.jar` Ok... so you _are_ packaging a version of Bouncy Castle. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 22, 2025, 2:58pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/8 "2025-04-22T14:58:25Z")
> [@Shyam\_Sundar\_Ashok](#): > > And this site is just restricting from posting any details . So many checks that feel restrictive to post in this forum. Please address this issue as well I don't know what checks you're talking about if you can't describe them or screenshot them for me. Most are probably due to you being a new user (low post count) or including a bunch of links in your post, and will naturally go away as you post more. ---
**Author:** ![Shyam\_Sundar\_Ashok](https://avatars.discourse-cdn.com/v4/letter/s/cc9497/32.png) [@Shyam\_Sundar\_Ashok](https://forum.inductiveautomation.com/u/Shyam_Sundar_Ashok)\ **Post date:** [April 22, 2025, 3:11pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/9 "2025-04-22T15:11:04Z")
Oh ok.. i figured it out .. I am using this lib : [https://mvnrepository.com/artifact/eu.agno3.jcifs/jcifs-ng/2.1.6](https://mvnrepository.com/artifact/eu.agno3.jcifs/jcifs-ng/2.1.6) . This seems to be pulling that bouncy castle lib. Will see if i can update this lib and if it fixes the issue. Thank you Kevin. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 22, 2025, 3:24pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/10 "2025-04-22T15:24:57Z")
I think you may also have issues with packaging some of those jetty artifacts, as Ignition already has some of them on its class path, and not likely the same version. ---
**Author:** ![Shyam\_Sundar\_Ashok](https://avatars.discourse-cdn.com/v4/letter/s/cc9497/32.png) [@Shyam\_Sundar\_Ashok](https://forum.inductiveautomation.com/u/Shyam_Sundar_Ashok)\ **Post date:** [April 22, 2025, 3:33pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/11 "2025-04-22T15:33:06Z")
oh ok.. can you plz share which version of Jetty is used in Ignition v8.1.47 ? ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [April 22, 2025, 3:58pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/12 "2025-04-22T15:58:01Z")
Looks like 10.0.20. You can find this out yourself on any version by looking in the `$IGNITION/lib/core/gateway` folder. ```python $ ls | grep jetty jetty-alpn-client-10.0.20.jar jetty-client-10.0.20.jar jetty-http-10.0.20.jar jetty-io-10.0.20.jar jetty-rewrite-10.0.20.jar jetty-security-10.0.20.jar jetty-server-10.0.20.jar jetty-servlet-10.0.20.jar jetty-servlet-api-4.0.6.jar jetty-util-10.0.20.jar jetty-webapp-10.0.20.jar jetty-xml-10.0.20.jar websocket-jetty-api-10.0.20.jar websocket-jetty-client-10.0.20.jar websocket-jetty-common-10.0.20.jar websocket-jetty-server-10.0.20.jar ``` ---
**Author:** ![Shyam\_Sundar\_Ashok](https://avatars.discourse-cdn.com/v4/letter/s/cc9497/32.png) [@Shyam\_Sundar\_Ashok](https://forum.inductiveautomation.com/u/Shyam_Sundar_Ashok)\ **Post date:** [April 22, 2025, 4:23pm UTC](https://forum.inductiveautomation.com/t/ignition-v8-1-47-custom-module-is-giving-error-related-to-bouncycastle/105359/13 "2025-04-22T16:23:11Z")
Thank you Kevin.