Https problems in OAuth 2.0 Resource Server with Spring

Question

I am trying to set up https for OAuth 2.0 Resource Server in Spring

All I did was to add following entries in application.properties

server.port: 8444
server.ssl.key-store: keystore.p12
server.ssl.key-store-password: mypassword
server.ssl.keyStoreType: PKCS12
server.ssl.keyAlias: tomcat

and generate certificate with:

keytool -genkey -alias tomcat -storetype PKCS12 -keyalg RSA -keysize 2048 -keystore keystore.p12 -validity 3650

And I am getting following exception when runing app.

DerInputStream.getLength(): lengthTag=111, too big

What is more generated key and configuration works perfectly fine in Authorization Server.