====== RevocationExtensions klasa ======

Extension metode za provjeru opoziva certifikata.

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===== Definicija =====

<code csharp>
namespace WvdS.System.Security.Cryptography.X509Certificates;

public static class RevocationExtensions
</code>

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===== Metode =====

^  Metoda  ^  Opis  ^
| IsRevoked | Provjerava je li certifikat opozvan |
| FetchCrlAsync | Preuzima CRL s URL-a (iz certifikatnog proširenja) |
| CheckRevocationAsync | Kombinirano: preuzimanje CRL-a i provjera opoziva |
| GetCrlDistributionPoints | Ekstrahira CRL URL-ove iz certifikata |
| GetOcspUrls | Ekstrahira OCSP URL-ove iz certifikata |

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===== Provjera opoziva =====

**S postojećim CRL-om:**

<code csharp>
var certificate = new X509Certificate2("user.cer");
byte[] crlData = File.ReadAllBytes("ca.crl");
var caCert = new X509Certificate2("ca.cer");

RevocationResult result = certificate.IsRevoked(crlData, caCert, CryptoMode.Hybrid);

if (result.Success && result.IsRevoked)
{
    Console.WriteLine($"Certifikat opozvan dana: {result.RevocationDate}");
    Console.WriteLine($"Razlog: {result.Reason}");
}
</code>

**Automatsko preuzimanje CRL-a:**

<code csharp>
RevocationResult result = await certificate.CheckRevocationAsync(
    caCert,
    mode: CryptoMode.Hybrid);
</code>

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===== RevocationResult klasa =====

^  Svojstvo  ^  Tip  ^  Opis  ^
| ''IsRevoked'' | bool | Certifikat je opozvan |
| ''RevocationDate'' | DateTimeOffset? | Vrijeme opoziva |
| ''Reason'' | CrlReason? | Razlog opoziva |
| ''CrlVerified'' | bool | CRL potpis je verificiran |
| ''Success'' | bool | Provjera je bila uspješna |

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===== CRL predmemorija =====

<code csharp>
using var cache = new CrlCache(defaultCacheDuration: TimeSpan.FromHours(1));

// Provjera s automatskim CRL predmemoriranjem
RevocationResult result1 = await cache.CheckRevocationAsync(cert1, caCert);
RevocationResult result2 = await cache.CheckRevocationAsync(cert2, caCert); // CRL iz predmemorije
</code>

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===== Vidi također =====

  * [[.:certificaterevocationlistextensions|CertificateRevocationListExtensions]]
  * [[.:x509chainextensions|X509ChainExtensions]]

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//Wolfgang van der Stille @ EMSR DATA d.o.o. - Post-Quantum Cryptography Professional//

{{tag>crl revocation widerruf ocsp}}