====== NativeCryptoProvider ======

**Imenski prostor:** ''WvdS.System.Security.Cryptography.Providers''

Kriptografski ponudnik na osnovi P/Invoke za strežniške in namizne aplikacije. Neposredno komunicira z OpenSSL 3.6 preko storitev Platform Invocation Services.

===== Pregled =====

''NativeCryptoProvider'' je privzeti ponudnik za:

  * Blazor Server
  * ASP.NET Core
  * Namizne aplikacije (Windows, Linux, macOS)
  * Konzolne aplikacije
  * Windows Services / Linux Daemons

===== Lastnosti =====

^ Lastnost ^ Tip ^ Opis ^
| ''Name'' | string | ''%%"Native (P/Invoke)"%%'' |
| ''IsAvailable'' | bool | ''true'', ko je OpenSSL 3.6 dosegljiv |

===== Inicializacija =====

<code csharp>
using WvdS.System.Security.Cryptography.Providers;

// Ustvari ponudnika
var provider = new NativeCryptoProvider();

// Inicializiraj (naloži OpenSSL)
await provider.InitializeAsync();

// Preveri razpoložljivost
if (provider.IsAvailable)
{
    Console.WriteLine($"Ponudnik: {provider.Name}");
    Console.WriteLine($"OpenSSL: {provider.GetOpenSslVersion()}");
}
</code>

===== Operacije ML-DSA =====

==== GenerateMlDsaKeyPairAsync ====

Generira par ključev ML-DSA.

<code csharp>
var (publicKey, privateKey) = await provider.GenerateMlDsaKeyPairAsync("ML-DSA-65");

// Podprti algoritmi:
// - "ML-DSA-44" (NIST Level 1)
// - "ML-DSA-65" (NIST Level 3, priporočeno)
// - "ML-DSA-87" (NIST Level 5)
</code>

==== SignMlDsaAsync / VerifyMlDsaAsync ====

<code csharp>
byte[] data = Encoding.UTF8.GetBytes("Pomembni podatki");
byte[] signature = await provider.SignMlDsaAsync(data, privateKey);
bool isValid = await provider.VerifyMlDsaAsync(data, signature, publicKey);
</code>

===== Operacije ML-KEM =====

==== GenerateMlKemKeyPairAsync ====

<code csharp>
var (publicKey, privateKey) = await provider.GenerateMlKemKeyPairAsync("ML-KEM-768");

// Podprti algoritmi:
// - "ML-KEM-512" (NIST Level 1)
// - "ML-KEM-768" (NIST Level 3, priporočeno)
// - "ML-KEM-1024" (NIST Level 5)
</code>

==== EncapsulateAsync / DecapsulateAsync ====

<code csharp>
var (sharedSecret, ciphertext) = await provider.EncapsulateAsync(recipientPublicKey);
byte[] sharedSecret = await provider.DecapsulateAsync(ciphertext, privateKey);
</code>

===== Pregled metod =====

^ Metoda ^ Parametri ^ Vrnitev ^
| ''InitializeAsync()'' | - | Task |
| ''GetOpenSslVersion()'' | - | string |
| ''GenerateMlDsaKeyPairAsync'' | string algorithm | Task<(byte[], byte[])> |
| ''SignMlDsaAsync'' | byte[] data, byte[] privateKey | Task<byte[]> |
| ''VerifyMlDsaAsync'' | byte[] data, byte[] signature, byte[] publicKey | Task<bool> |
| ''GenerateMlKemKeyPairAsync'' | string algorithm | Task<(byte[], byte[])> |
| ''EncapsulateAsync'' | byte[] publicKey | Task<(byte[], byte[])> |
| ''DecapsulateAsync'' | byte[] ciphertext, byte[] privateKey | Task<byte[]> |
| ''CreateEphemeralCertificateAsync'' | string subject, TimeSpan validity, byte[] privateKey | Task<byte[]> |
| ''SignCertificateAsync'' | byte[] tbsCertificate, byte[] privateKey | Task<byte[]> |

===== Konfiguracija poti OpenSSL =====

<code csharp>
// Nastavite pot pred InitializeAsync()
CryptoConfig.OpenSslPath = @"C:\OpenSSL\bin";

var provider = new NativeCryptoProvider();
await provider.InitializeAsync();
</code>

**Privzete iskalne poti:**

^ Operacijski sistem ^ Poti ^
| Windows | ''%%.\%%'', ''%%C:\OpenSSL\bin%%'', ''%%PATH%%'' |
| Linux | ''%%/usr/local/lib64%%'', ''%%/usr/lib/x86_64-linux-gnu%%'' |
| macOS | ''%%/opt/homebrew/lib%%'', ''%%/usr/local/lib%%'' |

===== Varnostne opombe =====

<WRAP warning>
  * Zahteva OpenSSL 3.6.0 ali novejši s PQ-algoritmi
  * Zasebni ključi so hranjeni v pomnilniku procesa
  * Za najvišjo varnost: ključe eksplicitno izbrišite z ''CryptographicOperations.ZeroMemory''
</WRAP>

===== Glejte tudi =====

  * [[.:start|Imenski prostor Providers]]
  * [[.:icryptoprovider|ICryptoProvider]]
  * [[.:wasmcryptoprovider|WasmCryptoProvider]]

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