Convert or import SSL certificate to java keystore

Question

I have a SSL certificate I'm trying to import in a Java keystore in order to switch some old application to SSL. I am unfamiliar with everything Java. I have the .crt, .key and .ca bundle files but not clue what formats they're in.

com.cabundle:

-----BEGIN CERTIFICATE-----
MIIEkjC....

com.crt:

-----BEGIN CERTIFICATE-----
MIIGDjCCBPag...

com.key:

-----BEGIN PRIVATE KEY-----
MIIEvAIBADANBg.....

I've tried following this guide: https://docs.oracle.com/cd/E35976_01/server.740/es_admin/src/tadm_ssl_convert_pem_to_jks.html but I get all sorts of garbage errors I can't make anything out of. I just don't get it.

My java configuration file needs this:

# SSL configuration (disabled by default)
# ssl-enabled=true|false
# ssl-key-store=
# ssl-key-store-password=
# ssl-key-store-type=jks

How can I do this?

Answer 1

These are PEM format certificates. Before they can be imported, you must merge them into a PKCS12 format cert

openssl pkcs12 -export -in com.crt -inkey com.key -out temp.p12 -name com -CAfile com.cabundle -caname root -chain

Ensure you assign a password - keytool won't import passwordless PKCS12 files

keytool -importkeystore -deststorepass [your-password-here] -destkeypass [your-password-here] -destkeystore out.jks -srckeystore temp.p12 -srcstoretype PKCS12 -srcstorepass password-created-in-last-step -alias whatever