mscorlib-4.0-offline-doxygenated-documentation/html/_cng_key_usages_8cs_source.html

 namespace System.Security.Cryptography
 {
     [Flags]
     public enum CngKeyUsages
     {
         None = 0x0,
         Decryption = 0x1,
         Signing = 0x2,
         KeyAgreement = 0x4,
         AllUsages = 0xFFFFFF
     }
 }
System.Security.Cryptography.CngKeyUsages.Signing
The key can be used for signing and verification.

System.Security.Cryptography
Definition: Aes.cs:3

System.Security.Cryptography.CngKeyUsages
CngKeyUsages
Specifies the cryptographic operations that a Cryptography Next Generation (CNG) key may be used with...
Definition: CngKeyUsages.cs:5

System.AppDomainManagerInitializationOptions.None
No initialization action.

System.Security.Cryptography.CngKeyUsages.AllUsages
The key can be used for all purposes.

System.Security.Cryptography.CngKeyUsages.KeyAgreement
The key can be used for secret agreement generation and key exchange.

System.Security.Cryptography.CngKeyUsages.Decryption
The key can be used for encryption and decryption.