Certificate
Certificate extensions
PFX
or P12
Personal Information Exchange Format
Supports storage of private and public keys and all certificates in the path.
CER
or CRT
Base64-encoded or DER-encoded binary X.509 Certificate
Storage of a single certificate. This format does not support storage of private keys.
CRL
Certificate Revocation List
Designates a certificate that has been revoked.
CSR
Certificate Signing Request
This file type is issued by applications to submit requests to a Certification Authority or CA.
DER
DER-encoded binary X.509 Certificate
Storage of a single certificate. This format does not support storage of private keys.
P7B
or P7R
or SPC
Cryptographic Message Syntax Standard
Supports storage of all certificates in path and does not store private keys.