HCRYPTKEY

The HCRYPTKEY data type is used to represent handles to cryptographic keys. These handles are used to indicate to the CSP module which key is being used in a specific operation. The CSP module does not enable direct access to the key values. Instead, the user performs functions by using the key value through the key handle.

typedef ULONG_PTR HCRYPTKEY;

Requirements

Requirement	Value
Minimum supported client	Windows XP [desktop apps only]
Minimum supported server	Windows Server 2003 [desktop apps only]
Header	Wincrypt.h