Extensiones más comunes para los certificados
| extensión | Nombre | Descripción |
|---|---|---|
| .pem | Privacy Enhanced Mail (PEM) | Base64 encoded DER certificate |
| .cer | Security CERtificate | |
| .crt | ||
| .der | ||
| .p7b | Estructura sin datos, sólo certificados o CRLs. | |
| .p7c | ||
| PKCS#7 | ||
| .p12 | PKCS#12 | Puede contener el certificado público y la llave privada |
| .pfx | personal information exchange (PFX) | formato usado antes del PKCS#12 |
Filetype Format name Description .pem Privacy Enhanced Mail (PEM) Base64 encoded DER certificate, that uses: “—–BEGIN CERTIFICATE—–” and “—–END CERTIFICATE—–” .cer .crt .der Security CERtificate Usually binary DER form, but Base64-encoded certificates are common too. .p7b .p7c Structure without data, just certificates or CRLs.
PKCS#7 is a standard for signing or encrypting (officially called “enveloping”) data. .p12 PKCS#12 May contain certificate(s) (public) and private keys (password protected). .pfx personal information exchange (PFX) Older format. Came before PKCS#12. Usually today data is in PKCS#12 format.