X509KeyUsageFlags Enum

Definition

Namespace:

System.Security.Cryptography.X509Certificates

Assembly:

System.Security.Cryptography.dll

Defines how the certificate key can be used. If this value is not defined, the key can be used for any purpose.

This enumeration supports a bitwise combination of its member values.

public enum class X509KeyUsageFlags

[System.Flags]
public enum X509KeyUsageFlags

[<System.Flags>]
type X509KeyUsageFlags = 

Public Enum X509KeyUsageFlags

Inheritance

Object

ValueType

Enum

X509KeyUsageFlags

Attributes

FlagsAttribute

Fields

Name	Value	Description
None	0	No key usage parameters.
EncipherOnly	1	The key can be used for encryption only.
CrlSign	2	The key can be used to sign a certificate revocation list (CRL).
KeyCertSign	4	The key can be used to sign certificates.
KeyAgreement	8	The key can be used to determine key agreement, such as a key created using the Diffie-Hellman key agreement algorithm.
DataEncipherment	16	The key can be used for data encryption.
KeyEncipherment	32	The key can be used for key encryption.
NonRepudiation	64	The key can be used for authentication.
DigitalSignature	128	The key can be used as a digital signature.
DecipherOnly	32768	The key can be used for decryption only.

Remarks

This class is an implementation of a commonly used extension that is mapped by default to the CryptoConfig file. When the Extensions property of the X509Certificate2 class is invoked, this class can be used directly.