PFN_CSP_PAD_DATA Function Pointer

Article
03/06/2009

The PFN_CSP_PAD_DATA function pads a data buffer for use in a cryptographic operation when the smart card itself does not perform data padding.

Syntax

typedef DWORD ( WINAPI *PFN_CSP_PAD_DATA )(
  __in   PCARD_SIGNING_INFO pSigningInfo,
  __in   DWORD cbMaxWidth,
  __out  DWORD *pcbPaddedBuffer,
  __out  PBYTE *ppbPaddedBuffer
);

Parameters

pSigningInfo [in]
A pointer to the CARD_SIGNING_INFO structure that specifies the data to pad and the hashing algorithm used to sign the data.
cbMaxWidth [in]
The maximum size, in bytes, of the padded buffer.
pcbPaddedBuffer [out]
A pointer to a DWORD value that specifies the size, in bytes, of the ppbPaddedBuffer array.
ppbPaddedBuffer [out]
The address of a pointer to an array of byte values that, on output, contains the padded data. When you are finished using the ppbPaddedBuffer array, free it by calling the PFN_CSP_FREE function.

Return Value

If the function succeeds, the function returns zero.

If the function fails, it returns a nonzero error value.

Remarks

Currently, only PKCS#1 version 1.1 padding is supported.

Requirements

Minimum supported client	Windows XP, Windows 2000 Professional with SP4
Minimum supported server	Windows Server 2003, Windows 2000 Server with SP4
Header	Cardmod.h