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using System;
using System.IO;
using Org.BouncyCastle.Asn1;
using Org.BouncyCastle.Math;
namespace Org.BouncyCastle.Tls.Crypto
{
/// <summary>Interface providing the functional representation of a single X.509 certificate.</summary>
public interface TlsCertificate
{
/// <summary>Return an encryptor based on the public key in this certificate.</summary>
/// <param name="tlsCertificateRole"><see cref="TlsCertificateRole"/></param>
/// <returns>a <see cref="TlsEncryptor"/> based on this certificate's public key.</returns>
/// <exception cref="IOException"/>
TlsEncryptor CreateEncryptor(int tlsCertificateRole);
/// <param name="signatureAlgorithm"><see cref="SignatureAlgorithm"/></param>
/// <exception cref="IOException"/>
TlsVerifier CreateVerifier(short signatureAlgorithm);
/// <param name="signatureScheme"><see cref="SignatureScheme"/></param>
/// <exception cref="IOException"/>
TlsVerifier CreateVerifier(int signatureScheme);
/// <exception cref="IOException"/>
byte[] GetEncoded();
/// <exception cref="IOException"/>
byte[] GetExtension(DerObjectIdentifier extensionOid);
BigInteger SerialNumber { get; }
/// <returns>the OID of this certificate's 'signatureAlgorithm', as a string.</returns>
string SigAlgOid { get; }
/// <exception cref="IOException"/>
Asn1Encodable GetSigAlgParams();
/// <returns><see cref="SignatureAlgorithm"/></returns>
/// <exception cref="IOException"/>
short GetLegacySignatureAlgorithm();
/// <param name="signatureAlgorithm"><see cref="SignatureAlgorithm"/></param>
/// <returns>true if (and only if) this certificate can be used to verify the given signature algorithm.
/// </returns>
/// <exception cref="IOException"/>
bool SupportsSignatureAlgorithm(short signatureAlgorithm);
/// <exception cref="IOException"/>
bool SupportsSignatureAlgorithmCA(short signatureAlgorithm);
/// <param name="connectionEnd"><see cref="ConnectionEnd"/></param>
/// <param name="tlsCertificateRole"><see cref="TlsCertificateRole"/></param>
/// <exception cref="IOException"/>
TlsCertificate CheckUsageInRole(int connectionEnd, int tlsCertificateRole);
}
}
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