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4/8/2010

This function converts a CryptoAPI algorithm identifier ( ALG_ID) to an ASN.1 object identifier string.

Syntax 

LPCSTR WINAPI CertAlgIdToOID(
  DWORD 
dwAlgId
);

Parameters

dwAlgId

[in] Specifies the value to be converted to an object identifier (OID).

Return Value

Returns the NULL-terminated OID string or NULL if there is no OID string that corresponds to the algorithm identifier.

Example Code

Copy Code 
// EXAMPLE CODE USING CertAlgIdToOID() to 
// convert the CALG_SHA algorithm identifier to an 
// object identifier string.
+
//--------------------------------------------------------------------
//  Declare variables. 
LPCSTR pszObjID;
if(pszObjID= CertAlgIdToOID(CALG_SHA))
{
   printf("The OID for CALG_SHA  is %s \n",pszObjID);
}
else
{
   printf("No object identifier string correlates to the ALG_ID.
\n");
}

Requirements

Header wincrypt.h
Library crypt32.lib
Windows Embedded CE Windows CE 3.0 and later
Windows Mobile Windows Mobile Version 5.0 and later

See Also

Reference

ALG_ID