What is the most common PKCS#12 format for Certificates used for SSL Applications?

As far as I know, PKCS#12 formats can store multiple certificates and pr开发者_JAVA技巧ivate keys.

But, I would like to know what is the most common format in a PKCS#12 format? i.e. One End Entity Certificate, One private Key and all CAs for the End Entity Certificate till the root?

Which is the most common format used by SSL Applications like https servers etc?

It's really up to the user what he decides to store in PKCS#12 file. I.e. it can be either a certificate with a private key, or a certificate with a private key and some CA certificate(s) or just a certificate storage with many certificates. For example, our SecureBlackbox allows you to store any number of certificates (not necessarily with private keys) in PKCS#12 file. Most common usage scenario is exporting a certificate, it's private key and sometimes CA certificates to single PFX file for secure transport or export/import to another system.