Configuring the SpiffeProvider in java.security is not adding the Provider

I am trying to plugin the SpiffeProvider using just the java.security properties file, but this is not working for some reason. Can you please help me figure this out? I have to also mention that I don't rely on the SpiffeProvider.install()

The java.security content

# The provider sequence, 11 is accurate 
security.provider.11=io.spiffe.provider.SpiffeProvider
# Determines the default key and trust manager factory algorithms for
# the javax.net.ssl package.
#
ssl.KeyManagerFactory.algorithm=Spiffe
ssl.TrustManagerFactory.algorithm=Spiffe

# list of accepted SPIFFE IDs
ssl.spiffe.accept=spiffe://example.org/myservice

Please see this commit on my fork https://github.com/alwaysastudent/java-spiffe-examples/commit/805a56d768489733d643bbcc01ac01fd6f9b4ebf where I am trying to test a spring boot application jar.

The way I am running this example is by

java-spiffe-examples/spring-boot-x509-demo]$ java -Djava.security.debug=properties -Djava.security.policy=java.policy -Djava.security.properties=java.security -jar ./backend/build/libs/backend-0.1.jar


properties: reading security properties file: /Users/alwaysastudent/.sdkman/candidates/java/8.0.272.hs-adpt/jre/lib/security/java.security
properties: reading security properties file: file:/Users/alwaysastudent/dev/temp-projects/fork/java-spiffe-examples/spring-boot-x509-demo/java.security

But I am getting the following error

java.security.KeyStoreException: Spiffe not found
        at java.security.KeyStore.getInstance(KeyStore.java:851) ~[na:1.8.0_272]
        at org.apache.tomcat.util.net.SSLUtilBase.getStore(SSLUtilBase.java:184) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.tomcat.util.net.SSLHostConfigCertificate.getCertificateKeystore(SSLHostConfigCertificate.java:207) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.tomcat.util.net.SSLUtilBase.getKeyManagers(SSLUtilBase.java:282) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.tomcat.util.net.SSLUtilBase.createSSLContext(SSLUtilBase.java:246) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.tomcat.util.net.AbstractJsseEndpoint.createSSLContext(AbstractJsseEndpoint.java:97) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.tomcat.util.net.AbstractJsseEndpoint.initialiseSsl(AbstractJsseEndpoint.java:71) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.tomcat.util.net.NioEndpoint.bind(NioEndpoint.java:216) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.tomcat.util.net.AbstractEndpoint.bindWithCleanup(AbstractEndpoint.java:1141) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.tomcat.util.net.AbstractEndpoint.start(AbstractEndpoint.java:1227) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.coyote.AbstractProtocol.start(AbstractProtocol.java:592) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.catalina.connector.Connector.startInternal(Connector.java:1064) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.apache.catalina.core.StandardService.addConnector(StandardService.java:227) [tomcat-embed-core-9.0.37.jar!/:9.0.37]
        at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.addPreviouslyRemovedConnectors(TomcatWebServer.java:282) [spring-boot-2.3.3.RELEASE.jar!/:2.3.3.RELEASE]
        at org.springframework.boot.web.embedded.tomcat.TomcatWebServer.start(TomcatWebServer.java:213) [spring-boot-2.3.3.RELEASE.jar!/:2.3.3.RELEASE]
        at org.springframework.boot.web.servlet.context.WebServerStartStopLifecycle.start(WebServerStartStopLifecycle.java:43) [spring-boot-2.3.3.RELEASE.jar!/:2.3.3.RELEASE]
        at org.springframework.context.support.DefaultLifecycleProcessor.doStart(DefaultLifecycleProcessor.java:182) [spring-context-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.context.support.DefaultLifecycleProcessor.access$200(DefaultLifecycleProcessor.java:53) [spring-context-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.context.support.DefaultLifecycleProcessor$LifecycleGroup.start(DefaultLifecycleProcessor.java:360) [spring-context-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.context.support.DefaultLifecycleProcessor.startBeans(DefaultLifecycleProcessor.java:158) [spring-context-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.context.support.DefaultLifecycleProcessor.onRefresh(DefaultLifecycleProcessor.java:122) [spring-context-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.finishRefresh(AbstractApplicationContext.java:895) [spring-context-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:554) [spring-context-5.2.8.RELEASE.jar!/:5.2.8.RELEASE]
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:143) [spring-boot-2.3.3.RELEASE.jar!/:2.3.3.RELEASE]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:758) [spring-boot-2.3.3.RELEASE.jar!/:2.3.3.RELEASE]
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:750) [spring-boot-2.3.3.RELEASE.jar!/:2.3.3.RELEASE]
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:397) [spring-boot-2.3.3.RELEASE.jar!/:2.3.3.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) [spring-boot-2.3.3.RELEASE.jar!/:2.3.3.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1237) [spring-boot-2.3.3.RELEASE.jar!/:2.3.3.RELEASE]
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) [spring-boot-2.3.3.RELEASE.jar!/:2.3.3.RELEASE]
        at com.example.BackendApp.main(BackendApp.java:14) [classes!/:na]
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_272]
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_272]
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_272]
        at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_272]
        at org.springframework.boot.loader.MainMethodRunner.run(MainMethodRunner.java:49) [backend-0.1.jar:na]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:109) [backend-0.1.jar:na]
        at org.springframework.boot.loader.Launcher.launch(Launcher.java:58) [backend-0.1.jar:na]
        at org.springframework.boot.loader.JarLauncher.main(JarLauncher.java:88) [backend-0.1.jar:na]
Caused by: java.security.NoSuchAlgorithmException: Spiffe KeyStore not available
        at sun.security.jca.GetInstance.getInstance(GetInstance.java:159) ~[na:1.8.0_272]
        at java.security.Security.getImpl(Security.java:695) ~[na:1.8.0_272]
        at java.security.KeyStore.getInstance(KeyStore.java:848) ~[na:1.8.0_272]
        ... 39 common frames omitted

I tried with and without the java.policy file and it does not work in both cases. If I run the program from intellij it works, but when I run this as an executable jar it does not. Kindly help understand the problem.

Start by reproducing the Spring Boot executable-jar launch with the shown java.security file and compare it with the IntelliJ run. Trace provider loading around SpiffeProvider.install() and the KeyStore.getInstance failure, using java.policy only as a controlled variation. Done means explaining or fixing why Spiffe is unavailable from the executable jar without relying on install().