CngKey.Exists Method (String, CngProvider, CngKeyOpenOptions)

 
System_CAPS_noteNote

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Checks to see whether a named key exists in the specified key storage provider (KSP), according to the specified options.

Namespace:   System.Security.Cryptography
Assembly:  System.Core (in System.Core.dll)

public static bool Exists(
	string keyName,
	CngProvider provider,
	CngKeyOpenOptions options
)

Parameters

keyName
Type: System.String

The key name.

provider
Type: System.Security.Cryptography.CngProvider

The KSP to search for the key.

options
Type: System.Security.Cryptography.CngKeyOpenOptions

A bitwise combination of the enumeration values that specify options for opening a key.

Return Value

Type: System.Boolean

true if the named key exists in the specified provider; otherwise, false.

Exception Condition
ArgumentNullException

keyName or provider is null.

PlatformNotSupportedException

Cryptography Next Generation (CNG) is not supported on this system.

CryptographicException

All other errors.

Use this overload to check for the existence of a key in a KSP other than the default MicrosoftSoftwareKeyStorageProvider, and to specify key open options.

.NET Framework
Available since 3.5
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