# Trouble to sign modulein 7.8.3 **URL:** \ **Category:** Ignition\ **Created:** [May 19, 2016, 3:19pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698 "2016-05-19T15:19:17Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\ **Post date:** [May 19, 2016, 3:19pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/1 "2016-05-19T15:19:17Z")
I trie to module signer tools for signing modules for 7.8.3 : with the followind command : ```auto java -jar module-signer.jar -keystore=D:/install/Ignition/export_certif.jks -keystore-pwd=siai -alias=byes-siai -alias-pwd=siai -chain=D:/install/Ignition/byes_siai.p7b -module-in=D:/install/Ignition/SNMP-Basic-Driver-unsigned-1.0.6.modl -module-out=D:/install/Ignition/SNMP-Basic-Driver-signed-1.0.6.modl ``` I have an error : ```auto aucun attribut manifest principal dans module-signer.jar ``` ```auto "No Main Manifest Attribute" in module-signer.jar ``` Could you please post the module-signer.jar. I’ve build It with intelliJ/maven from [github.com/inductiveautomation/module-signer](https://github.com/inductiveautomation/module-signer) module-signer-1.0.0-SNAPSHOT.jar rename to module-signer.jar but it doesn’t works … No main class are set into the manifest… ![:scratch:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/76d1620bec252bfac07050c889ff5a91dc8a9c25.gif ":scratch:") ---
**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:** [May 19, 2016, 3:49pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/2 "2016-05-19T15:49:16Z")
I’ve just updated the module-signer project on Github. Pull, and then run ‘mvn clean package’ again. You should find two jars in the target directory, one that has “-jar-with-dependencies” in the name. That jar should be runnable now. ---
**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\ **Post date:** [May 19, 2016, 4:15pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/3 "2016-05-19T16:15:36Z")
Thanks kevin, could you please post here the module-signer.jar. ---
**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\ **Post date:** [May 19, 2016, 4:24pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/4 "2016-05-19T16:24:11Z")
Ok ! I can sign a module with the : module-signer-1.0.0-SNAPSHOT-jar-with-dependencies.jar generated and a self signed certificate. My module is in Trial, is in Free mode. Will check if it’s ok with a gateway waith a valide licence. ---
**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:** [May 19, 2016, 4:36pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/5 "2016-05-19T16:36:36Z")
In 7.8.3 the module hook has to override the isFreeModule() method and return true/false. ---
**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\ **Post date:** [May 19, 2016, 4:55pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/6 "2016-05-19T16:55:17Z")
could you post the link for javadoc with this method ? have not the last sdk javadoc ? only 7.7.8 seems to be available. With IntelliJ/Maven, can we build right now the module with this add. Need to very quickly upgrade 2 modules for 7.8.3 with FREE licence. What is the code to add for a FREE module : ![:scratch:](https://us1.discourse-cdn.com/inductiveautomation/original/1X/76d1620bec252bfac07050c889ff5a91dc8a9c25.gif ":scratch:") into public class ModuleHook extends AbstractDriverModuleHook for a module based with AbstractDriverModuleHook ? into public class AuditLogSplitterGatewayHook extends AbstractGatewayModuleHook for a module based with AbstractGatewayModuleHook ? ---
**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\ **Post date:** [May 19, 2016, 7:11pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/7 "2016-05-19T19:11:41Z")
When I add the following code in ModuleHook class > [@](#): > > @Override > public boolean isFreeModule(){ > return true; > } I have a compilation error. When I decompile interface GatewayModuleHook into intellij, I don't find isFreeModule() method described into 7.7.8 javadoc. data gathered from maven are from SDK 7.7.1..., I use : > [@](#): > > ``` > com.inductiveautomation.ignitionsdk > ignition-maven-plugin > 1.0.9 > > ``` and > [@](#): > > ``` > > 7.7.1 > > > ``` How to use 7.7.8 or 7.8.3 to be able to compile the module with isFreeModule() !!! if I change the sdk version to 7.7.8 into my pom, I have thhe following compilation error > [@](#): > > [WARNING] The POM for com.inductiveautomation.ignitionsdk:ignition-common:pom:7.7.8 is missing, no dependency information available > [WARNING] The POM for com.inductiveautomation.ignitionsdk:gateway-api:pom:7.7.8 is missing, no dependency information available > [WARNING] The POM for com.inductiveautomation.ignitionsdk:driver-api:pom:7.7.8 is missing, no dependency information available ---
**Author:** ![mazeyrat](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/mazeyrat/32/10955_2.png) [@mazeyrat](https://forum.inductiveautomation.com/u/mazeyrat)\ **Post date:** [May 19, 2016, 7:38pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/8 "2016-05-19T19:38:44Z")
With : public boolean isFreeModule(){ return true; } without @Override😊 compilation is OK, with 7.7.1 sdk ! ---
**Author:** ![thanthm](https://avatars.discourse-cdn.com/v4/letter/t/dec6dc/32.png) [@thanthm](https://forum.inductiveautomation.com/u/thanthm)\ **Post date:** [December 11, 2020, 3:50am UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/9 "2020-12-11T03:50:09Z")
I downloaded module-signer project zip file. When I extracted the zip file and run the “mvn clean package” command as you mentioned, I found this type of error shown in below. How to solve that case. [INFO] Changes detected - recompiling the module! [INFO] Compiling 3 source files to C:\Users\thanthm\eclipse-workspace\module-signer-master\target\classes [INFO] ------------------------------------------------------------------------ [INFO] BUILD FAILURE [INFO] ------------------------------------------------------------------------ [INFO] Total time: 01:34 min [INFO] Finished at: 2020-12-11T11:46:16+08:00 [INFO] ------------------------------------------------------------------------ [ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.0:compile (default-compile) on project module-signer: Fatal error compiling: invalid flag: --release -\> [Help 1] [ERROR] [ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch. [ERROR] Re-run Maven using the -X switch to enable full debug logging. [ERROR] [ERROR] For more information about the errors and possible solutions, please read the following articles: [ERROR] [Help 1] [http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException](http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException). ---
**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:** [December 11, 2020, 1:04pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/10 "2020-12-11T13:04:24Z")
I think you’re getting this error because you’re trying to build it with JDK 8 instead of JDK 11+. ---
**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:** [December 11, 2020, 1:06pm UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/11 "2020-12-11T13:06:07Z")
Ooo! Probably have to use an older checkout of the module-signer, then, as you need to use JDK8 to build for old Ignition. ---
**Author:** ![thanthm](https://avatars.discourse-cdn.com/v4/letter/t/dec6dc/32.png) [@thanthm](https://forum.inductiveautomation.com/u/thanthm)\ **Post date:** [December 14, 2020, 3:54am UTC](https://forum.inductiveautomation.com/t/trouble-to-sign-modulein-7-8-3/11698/12 "2020-12-14T03:54:46Z")
yes. I can compile the module-signed project with jdk 11. But the module can not used because Module “client-designer-gateway-archetype Ignition Module” requires at least Ignition version 8.0.0 (b0). May I know how to signed the module for ignition verion 7.9.16. Thanks for your guidance.