Load multiple certificates into PKCS12 with openssl

Question

I am trying to load multiple certificates using openssl into the PKCS12 format. The command is as follows:

openssl pkcs12 -export -in cert1.arm -inkey cert1_priv         


        

Answer 1

First, make sure all your certificates are in PEM format. Then, make a SINGLE file called "certs.pem" containing the rest of the certificates (cert2.arm, cert3.arm, and RootCert.pem).

Then use the command like this:

openssl pkcs12 -export -in cert1.arm -inkey cert1_private_key.pem -certfile certs.pem -name "Test" -out test.p12

The openssl pkcs12 documentation explains the different options.