How to know Solaris ipsec keys for ike in pkcs12 format?

I want to convert Solaris ipsec ike keys in a format suitable for Libreswan. With the command ikecert I export the public key ikecert certdb -e 0 > public.pem and private key ikecert certlocal -e 0 > public.pem Now with openssl I try to convert in pkcs12 format and.. openssl pkcs12 -export -in chiavepubblica.pem -inkey chiaveprivata.pem -out YourName.p12 return this error 4274747236:error:0906D06C:PEM routines:PEM_read_bio:no start line:pem_lib.c:707:Expecting: ANY PRIVATE KEY someone know a way to export it or convert in suitable format for libreswan? Thanks