Hello,
what is the version of java you are using? For Java 11, the following security providers should be used:
security.provider.1=org.bouncycastle.jcajce.provider.BouncyCastleFipsProvider
security.provider.2=org.bouncycastle.jsse.provider.BouncyCastleJsseProvider fips:BCFIPS
In Java 11 make sure you have bouncycastle added as a module, you can do so via CLI:
module add --name=org.bouncycastle.fips --resources=/path/to/bc-fips-1.0.2.jar:/path/to/bctls-fips-1.0.10.jar
/subsystem=elytron/provider-loader=bc:add(module=org.bouncycastle.fips)
/subsystem=elytron:write-attribute(name=initial-providers,value=bc)
Also make sure the keystore is of type "BCFKS".