CertFindExtension function (wincrypt.h)
The CertFindExtension function finds the first extension in the CERT_EXTENSION array, as identified by its object identifier (OID). This function can be used in the processing of a decoded certificate. A CERT_INFO structure is derived from a decoded certificate. The CERT_INFO structure's rgExtension member is passed to CertFindExtension in the rgExtensions parameter. This function determines whether a particular extension is in the array, and if so, returns a pointer to it
Syntax
PCERT_EXTENSION CertFindExtension(
[in] LPCSTR pszObjId,
[in] DWORD cExtensions,
[in] CERT_EXTENSION [] rgExtensions
);
Parameters
[in] pszObjId
A pointer to the object identifier (OID) to use in the search.
[in] cExtensions
Number of extensions in the rgExtensions array.
[in] rgExtensions
Array of CERT_EXTENSION structures.
Return value
Returns a pointer to the extension, if one is found. Otherwise, NULL is returned.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps | UWP apps] |
| Minimum supported server | Windows Server 2003 [desktop apps | UWP apps] |
| Target Platform | Windows |
| Header | wincrypt.h |
| Library | Crypt32.lib |
| DLL | Crypt32.dll |