X.509 Certificate File
General Information
| Title | CER File Extension |
| Extension | .cer |
| Full Form | X.509 Certificate File |
| File Type | Security Certificate |
| Developer | Various |
| MIME Type | application/pkix-cert |
File Function
| Primary Function | Store certificate |
| Additional Functions | Validate identity, Encrypt communication |
| Features | Public key, Digital signature |
File Characteristics
| Quality | High security |
| Supports Layers | N/A |
| Supports Transparency | N/A |
| Editable | No |
Use Cases
| SSL/TLS Certificates | Yes |
| Email Encryption | Yes |
| Code Signing | Yes |
Security and Practices
| Security Risks | Compromise, Spoofing |
| Best Practices | Secure storage, Regular updates |
Historical/Version Information
| Initial Release | Varies |
| Latest Version | Varies |
Associated Types
| Similar Extensions | .pem, .crt, .p12, .pfx |
Software Compatibility
| Software | Usage Policy | OS Compatibility |
|---|---|---|
 Microsoft Management Console |
Free | Windows |
 OpenSSL |
Free | Windows, Mac, Linux |
 Apple Keychain Access |
Free | Mac |