CER File Documentation

Overview

Feature Value
File Extension .cer
MIME Type application/pkix-cert
Standard Encoding Base64
Certificate Format X.509
Typical Usage SSL/TLS Website Certificates, Software Authentication
Associated File Types .CRT, .PEM
Common Algorithms RSA, ECC (Elliptic Curve Cryptography)
Default File Structure Starts with "-----BEGIN CERTIFICATE-----" and ends with "-----END CERTIFICATE-----"
Validity Information Issuer, Validity Period
Public Key Encapsulation Yes
Binary or Text Text (when in Base64 format)