In configuration of EJB3 Connector one cannot specify which key will be used:

<bean name="EJB3SSLDomain" class="org.jboss.security.plugins.JaasSecurityDomain">
<constructor>
<parameter>EJB3SSLDomain</parameter>
</constructor>
<property name="keyStoreURL">file:${jboss.server.home.dir}/ssl.keystore</property>
<property name="keyStorePass">secsec</property>
<property name="keyStoreAlias">ejb-ssl</property>
<!-- <property name="keyAlias">ejb-ssl</property> -->
<!-- <property name="keyPassword">secsec</property> -->
</bean>

Commented out properties are not possible to set and is keystore with more than one key is used user get following exception:
12:26:31,711 ERROR [AbstractKernelController] Error installing to Start: name=EJB3SSLDomain state=Create
java.security.UnrecoverableKeyException: Cannot recover key
at sun.security.provider.KeyProtector.recover(KeyProtector.java:311)
at sun.security.provider.JavaKeyStore.engineGetKey(JavaKeyStore.java:121)
at sun.security.provider.JavaKeyStore$JKS.engineGetKey(JavaKeyStore.java:38)
at java.security.KeyStore.getKey(KeyStore.java:763)
at com.sun.net.ssl.internal.ssl.SunX509KeyManagerImpl.<init>(SunX509KeyManagerImpl.java:113)
at com.sun.net.ssl.internal.ssl.KeyManagerFactoryImpl$SunX509.engineInit(KeyManagerFactoryImpl.java:48)
at javax.net.ssl.KeyManagerFactory.init(KeyManagerFactory.java:239)
at org.jboss.security.plugins.JaasSecurityDomain.loadKeyAndTrustStore(JaasSecurityDomain.java:883)
at org.jboss.security.plugins.JaasSecurityDomain.startService(JaasSecurityDomain.java:781)
at org.jboss.system.ServiceMBeanSupport.jbossInternalStart(ServiceMBeanSupport.java:376)
at org.jboss.system.ServiceMBeanSupport.pojoStart(ServiceMBeanSupport.java:216)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.jboss.reflect.plugins.introspection.ReflectionUtils.invoke(ReflectionUtils.java:59)
at org.jboss.reflect.plugins.introspection.ReflectMethodInfoImpl.invoke(ReflectMethodInfoImpl.java:150)
at org.jboss.joinpoint.plugins.BasicMethodJoinPoint.dispatch(BasicMethodJoinPoint.java:66)
at org.jboss.kernel.plugins.dependency.KernelControllerContextAction$JoinpointDispatchWrapper.execute(KernelControllerContextAction.java:243)
at org.jboss.kernel.plugins.dependency.ExecutionWrapper.execute(ExecutionWrapper.java:47)
at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchExecutionWrapper(KernelControllerContextAction.java:111)
at org.jboss.kernel.plugins.dependency.KernelControllerContextAction.dispatchJoinPoint(KernelControllerContextAction.java:72)
at org.jboss.kernel.plugins.dependency.LifecycleAction.installActionInternal(LifecycleAction.java:221)
at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:54)
at org.jboss.kernel.plugins.dependency.InstallsAwareAction.installAction(InstallsAwareAction.java:42)
at org.jboss.dependency.plugins.action.SimpleControllerContextAction.simpleInstallAction(SimpleControllerContextAction.java:62)
at org.jboss.dependency.plugins.action.AccessControllerContextAction.install(AccessControllerContextAction.java:71)
at org.jboss.dependency.plugins.AbstractControllerContextActions.install(AbstractControllerContextActions.java:51)
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1652)
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:938)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:988)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:778)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:543)
at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:125)
at org.jboss.deployers.vfs.deployer.kernel.BeanMetaDataDeployer.deploy(BeanMetaDataDeployer.java:52)
at org.jboss.deployers.spi.deployer.helpers.AbstractSimpleRealDeployer.internalDeploy(AbstractSimpleRealDeployer.java:62)
at org.jboss.deployers.spi.deployer.helpers.AbstractRealDeployer.deploy(AbstractRealDeployer.java:55)
at org.jboss.deployers.plugins.deployers.DeployerWrapper.deploy(DeployerWrapper.java:179)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doDeploy(DeployersImpl.java:1454)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1172)
at org.jboss.deployers.plugins.deployers.DeployersImpl.doInstallParentFirst(DeployersImpl.java:1193)
at org.jboss.deployers.plugins.deployers.DeployersImpl.install(DeployersImpl.java:1113)
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1652)
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:938)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:988)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:826)
at org.jboss.dependency.plugins.AbstractController.change(AbstractController.java:556)
at org.jboss.deployers.plugins.deployers.DeployersImpl.process(DeployersImpl.java:789)
at org.jboss.deployers.plugins.main.MainDeployerImpl.process(MainDeployerImpl.java:699)
at org.jboss.system.server.profileservice.repository.MainDeployerAdapter.process(MainDeployerAdapter.java:117)
at org.jboss.system.server.profileservice.repository.ProfileDeployAction.install(ProfileDeployAction.java:70)
at org.jboss.system.server.profileservice.repository.AbstractProfileAction.install(AbstractProfileAction.java:53)
at org.jboss.system.server.profileservice.repository.AbstractProfileService.install(AbstractProfileService.java:403)
at org.jboss.dependency.plugins.AbstractControllerContext.install(AbstractControllerContext.java:348)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:1652)
at org.jboss.dependency.plugins.AbstractController.incrementState(AbstractController.java:938)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:1082)
at org.jboss.dependency.plugins.AbstractController.resolveContexts(AbstractController.java:988)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:778)
at org.jboss.dependency.plugins.AbstractController.install(AbstractController.java:543)
at org.jboss.system.server.profileservice.repository.AbstractProfileService.registerProfile(AbstractProfileService.java:308)
at org.jboss.system.server.profileservice.ProfileServiceBootstrap.start(ProfileServiceBootstrap.java:256)
at org.jboss.bootstrap.AbstractServerImpl.start(AbstractServerImpl.java:461)
at org.jboss.Main.boot(Main.java:221)
at org.jboss.Main$1.run(Main.java:556)
at java.lang.Thread.run(Thread.java:619)