<PackageReference Include="BouncyCastle.Cryptography" Version="2.3.1" />

KeyUsage

public class KeyUsage : DerBitString
public const int CrlSign = 2

public const int DataEncipherment = 16

public const int DecipherOnly = 32768

public const int DigitalSignature = 128

public const int EncipherOnly = 1

public const int KeyAgreement = 8

public const int KeyCertSign = 4

public const int KeyEncipherment = 32

public const int NonRepudiation = 64

public KeyUsage(int usage)

public static KeyUsage FromExtensions(X509Extensions extensions)

public static KeyUsage GetInstance(object obj)