generating self signed certificate

 openssl req -newkey rsa:2048 -nodes -keyout signcert.key -x509 -days 365 -out sign.cer


./orapki wallet create -wallet /tmp/wallet -auto_login

./orapki wallet display -wallet /tmp/wallet

 ./orapki wallet add -wallet /tmp/wallet -dn "CN=Gms Signing Certificate" -keysize 2048 -self_signed -validity 1825 -pwd Welcome1

keytool -list -keystore /path/to/certificate

keytool -exportcert -alias certificatename.cert -file /tmp/certfilename -storepass password