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CngKeyUsages Enum

  • Reference

Definition

Namespace:
System.Security.Cryptography
Assembly:
System.Security.Cryptography.Cng.dll
Assembly:
System.Security.Cryptography.dll
Assembly:
System.Core.dll
Package:
System.Security.Cryptography.Cng v5.0.0

Specifies the cryptographic operations that a Cryptography Next Generation (CNG) key may be used with.

This enumeration supports a bitwise combination of its member values.

public enum class CngKeyUsages
[System.Flags]
public enum CngKeyUsages
[<System.Flags>]
type CngKeyUsages = 
Public Enum CngKeyUsages
Inheritance
Object
ValueType
Enum
CngKeyUsages
Attributes
FlagsAttribute

Fields

Name Value Description
None 0

No usage values are assigned to the key.
Decryption 1

The key can be used for encryption and decryption.
Signing 2

The key can be used for signing and verification.
KeyAgreement 4

The key can be used for secret agreement generation and key exchange.
AllUsages 16777215

The key can be used for all purposes.

Remarks

Not all operations apply to each key. For example, an Elliptic Curve Digital Signature Algorithm (ECDSA) key cannot be used for decryption even if the Decryption usage is set.

Applies to