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The KeySpec property specifies or retrieves a value that identifies whether a private key can be used for signing, or encryption, or both. This property is web enabled for both input and output.
This property is read/write.
Syntax
HRESULT put_KeySpec(
X509KeySpec Value
);
Parameters
Value
Return value
None
Remarks
If you specify a value of XCN_AT_SIGNATURE, the KeySpec property automatically sets the KeyUsage property to XCN_NCRYPT_ALLOW_SIGNING_FLAG. If you specify XCN_AT_KEYEXCHANGE, the KeyUsage property is set to XCN_NCRYPT_ALLOW_DECRYPT_FLAG | XCN_NCRYPT_ALLOW_KEY_AGREEMENT_FLAG. The KeySpec property only applies to [legacy] providers created by using CryptoAPI.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] |
| Minimum supported server | Windows Server 2008 [desktop apps only] |
| Target Platform | Windows |
| Header | certenroll.h |
| DLL | CertEnroll.dll |