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CryptUnregisterOIDFunction function

The CryptUnregisterOIDFunction function removes the registration of a DLL that contains the function to be called for the specified encoding type, function name, and OID.

Syntax


BOOL WINAPI CryptUnregisterOIDFunction(
  _In_  DWORD dwEncodingType,
  _In_  LPCSTR pszFuncName,
  _In_  LPCSTR pszOID
);

Parameters

dwEncodingType [in]

Specifies the encoding type to be matched. Currently, only X509_ASN_ENCODING and PKCS_7_ASN_ENCODING are used; however, additional encoding types may be added in the future. To match both current encoding types, use:

X509_ASN_ENCODING | PKCS_7_ASN_ENCODING

For functions that do not use an encoding type, set this parameter to zero.

pszFuncName [in]

Name of the function being unregistered.

pszOID [in]

A pointer to the object identifier (OID) that corresponds to the name of the function being unregistered. If the high order word of the OID is nonzero, pszOID is a pointer to either an OID string such as "2.5.29.1" or an ASCII string such as "file." If the high order word of the OID is zero, the low order word specifies the integer identifier to be used as the object identifier.

Return value

If the function succeeds, the return value is nonzero (TRUE).

If the function fails, the return value is zero (FALSE).

Requirements

Minimum supported client

Windows XP [desktop apps only]

Minimum supported server

Windows Server 2003 [desktop apps only]

Header

Wincrypt.h

Library

Crypt32.lib

DLL

Crypt32.dll

See also

OID Support Functions

 

 

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