p12
What is a .p12 file?
application/x-pkcs12
A .p12 file is a PKCS#12 (PFX) bundle — a password-protected binary archive that packages a certificate together with its private key (and optionally a chain) in one importable file. It is the standard way to move a complete TLS or client identity between systems.
How to use a .p12 file
Use an example .p12 to test PKCS#12 parsers and importers, keystore tooling, and password-protected bundle handling. The sample password is documented on the file's page; this is published sample material, not a real identity.