====== WvdS.System.Security.Cryptography.Signatures prostor imena ======

Sadrži extension metode za digitalne potpise s PQ podrškom.

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===== Klase =====

^  Klasa  ^  Opis  ^
| [[.:signatureextensions|SignatureExtensions]] | Proširenja za RSA, ECDsa i X509Certificate2 potpise |
| [[.:signeddataextensions|SignedDataExtensions]] | Proširenja za CMS/PKCS#7 SignedCms |
| [[.:hybridsignatureinfo|HybridSignatureInfo]] | Kontejner za hibridne podatke potpisa |

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===== Statičke klase =====

^  Klasa  ^  Opis  ^
| [[.:pqsignedcmshelper|PqSignedCmsHelper]] | High-level API za PQ-sposobne CMS operacije |

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===== Prošireni tipovi =====

^  .NET tip  ^  Klasa proširenja  ^
| ''System.Security.Cryptography.RSA''((Microsoft Docs: https://learn.microsoft.com/dotnet/api/system.security.cryptography.rsa)) | SignatureExtensions |
| ''System.Security.Cryptography.ECDsa''((Microsoft Docs: https://learn.microsoft.com/dotnet/api/system.security.cryptography.ecdsa)) | SignatureExtensions |
| ''System.Security.Cryptography.Pkcs.SignedCms''((Microsoft Docs: https://learn.microsoft.com/dotnet/api/system.security.cryptography.pkcs.signedcms)) | SignedDataExtensions |

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===== Format hibridnog potpisa =====

U hibridnom načinu rada generiraju se dva potpisa:

<code>
+---------------------------------------------+
| Hibridni potpis                             |
+---------------------------------------------+
| [4 bajta] Duljina klasičnog potpisa         |
| [n bajtova] Klasični potpis (RSA/ECDSA)     |
| [m bajtova] PQ potpis (ML-DSA)              |
+---------------------------------------------+
</code>

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===== Primjer =====

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

CryptoConfig.DefaultMode = CryptoMode.Hybrid;

using var rsa = RSA.Create(2048);
byte[] data = Encoding.UTF8.GetBytes("Podaci za potpisivanje");

// Kreiranje hibridnog potpisa
byte[] signature = rsa.SignData(
    data,
    HashAlgorithmName.SHA256,
    RSASignaturePadding.Pkcs1);

// Verifikacija
bool valid = rsa.VerifyData(
    data,
    signature,
    HashAlgorithmName.SHA256,
    RSASignaturePadding.Pkcs1);
</code>

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===== Vidi također =====

  * [[..:x509certificates:start|X509Certificates prostor imena]]
  * [[..:keyexchange:start|KeyExchange prostor imena]]
  * [[..:..:..:api:start|API-pregled]]

{{tag>namespace signaturen}}

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