CngKey.Exists Method
Definition
Important
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Checks for a named key in a specific key storage provider(KSP).
Overloads
| Exists(String) |
Checks to see whether a named key exists in the default key storage provider (KSP). |
| Exists(String, CngProvider) |
Checks to see whether a named key exists in the specified key storage provider (KSP). |
| Exists(String, CngProvider, CngKeyOpenOptions) |
Checks to see whether a named key exists in the specified key storage provider (KSP), according to the specified options. |
Exists(String)
- Source:
- Cng.NotSupported.cs
- Source:
- Cng.NotSupported.cs
- Source:
- Cng.NotSupported.cs
Checks to see whether a named key exists in the default key storage provider (KSP).
public:
static bool Exists(System::String ^ keyName);public static bool Exists (string keyName);[System.Runtime.Versioning.SupportedOSPlatform("windows")]
public static bool Exists (string keyName);static member Exists : string -> bool[<System.Runtime.Versioning.SupportedOSPlatform("windows")>]
static member Exists : string -> boolPublic Shared Function Exists (keyName As String) As BooleanParameters
- keyName
- String
The key name.
Returns
true if the named key exists in the default KSP; otherwise, false.
- Attributes
Exceptions
keyName is null.
Cryptography Next Generation (CNG) is not supported on this system.
All other errors.
Remarks
The default KSP is MicrosoftSoftwareKeyStorageProvider.
Applies to
Exists(String, CngProvider)
- Source:
- Cng.NotSupported.cs
- Source:
- Cng.NotSupported.cs
- Source:
- Cng.NotSupported.cs
Checks to see whether a named key exists in the specified key storage provider (KSP).
public:
static bool Exists(System::String ^ keyName, System::Security::Cryptography::CngProvider ^ provider);public static bool Exists (string keyName, System.Security.Cryptography.CngProvider provider);[System.Runtime.Versioning.SupportedOSPlatform("windows")]
public static bool Exists (string keyName, System.Security.Cryptography.CngProvider provider);static member Exists : string * System.Security.Cryptography.CngProvider -> bool[<System.Runtime.Versioning.SupportedOSPlatform("windows")>]
static member Exists : string * System.Security.Cryptography.CngProvider -> boolPublic Shared Function Exists (keyName As String, provider As CngProvider) As BooleanParameters
- keyName
- String
The key name.
- provider
- CngProvider
The KSP to check for the key.
Returns
true if the named key exists in the specified provider; otherwise, false.
- Attributes
Exceptions
keyName or provider is null.
Cryptography Next Generation (CNG) is not supported on this system.
All other errors.
Remarks
Use this overload to check for the existence of a key in a KSP other than the default KSP, which is MicrosoftSoftwareKeyStorageProvider.
Applies to
Exists(String, CngProvider, CngKeyOpenOptions)
- Source:
- Cng.NotSupported.cs
- Source:
- Cng.NotSupported.cs
- Source:
- Cng.NotSupported.cs
Checks to see whether a named key exists in the specified key storage provider (KSP), according to the specified options.
public:
static bool Exists(System::String ^ keyName, System::Security::Cryptography::CngProvider ^ provider, System::Security::Cryptography::CngKeyOpenOptions options);public static bool Exists (string keyName, System.Security.Cryptography.CngProvider provider, System.Security.Cryptography.CngKeyOpenOptions options);[System.Runtime.Versioning.SupportedOSPlatform("windows")]
public static bool Exists (string keyName, System.Security.Cryptography.CngProvider provider, System.Security.Cryptography.CngKeyOpenOptions options);[System.Security.SecurityCritical]
public static bool Exists (string keyName, System.Security.Cryptography.CngProvider provider, System.Security.Cryptography.CngKeyOpenOptions options);static member Exists : string * System.Security.Cryptography.CngProvider * System.Security.Cryptography.CngKeyOpenOptions -> bool[<System.Runtime.Versioning.SupportedOSPlatform("windows")>]
static member Exists : string * System.Security.Cryptography.CngProvider * System.Security.Cryptography.CngKeyOpenOptions -> bool[<System.Security.SecurityCritical>]
static member Exists : string * System.Security.Cryptography.CngProvider * System.Security.Cryptography.CngKeyOpenOptions -> boolPublic Shared Function Exists (keyName As String, provider As CngProvider, options As CngKeyOpenOptions) As BooleanParameters
- keyName
- String
The key name.
- provider
- CngProvider
The KSP to search for the key.
- options
- CngKeyOpenOptions
A bitwise combination of the enumeration values that specify options for opening a key.
Returns
true if the named key exists in the specified provider; otherwise, false.
- Attributes
Exceptions
keyName or provider is null.
Cryptography Next Generation (CNG) is not supported on this system.
All other errors.
Remarks
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.
