CngKey::Open Method (String^, CngProvider^, CngKeyOpenOptions)
Creates an instance of an CngKey object that represents an existing named key, using the specified key storage provider (KSP) and key open options.
Assembly: System.Core (in System.Core.dll)
public: static CngKey^ Open( String^ keyName, CngProvider^ provider, CngKeyOpenOptions openOptions )
Parameters
- keyName
-
Type:
System::String^
The name of the key.
- provider
-
Type:
System.Security.Cryptography::CngProvider^
The KSP that contains the key.
- openOptions
-
Type:
System.Security.Cryptography::CngKeyOpenOptions
A bitwise combination of the enumeration values that specify options for opening the key, such as where the key is opened from (machine or user storage) and whether to suppress UI prompting.
| Exception | Condition |
|---|---|
| ArgumentNullException | keyName or provider is null. |
| PlatformNotSupportedException | Cryptography Next Generation (CNG) is not supported on this system. |
| CryptographicException | All other errors. |
Unlike the Open(String^) method overload, this overload lets you specify both the provider and the key open options.
for permission to open a key container. Demand value: Demand. Associated enumeration: KeyContainerPermissionFlags::Open
Available since 3.5