adoc

"""
Python implementation of PKCS #7 padding.

RFC 2315: PKCS#7 page 21
Some content-encryption algorithms assume the
input length is a multiple of k octets, where k > 1, and
let the application define a method for handling inputs
whose lengths are not a multiple of k octets. For such
algorithms, the method shall be to pad the input at the
trailing end with k - (l mod k) octets all having value k -

phr34k

#include <windows.h>
#include "extern/png/png.h"
#include <stdio.h>
   
BOOL SaveToFilePng(HBITMAP hBitmap, LPCSTR lpszFileName)
{
	BITMAP Bitmap;
	GetObject(hBitmap, sizeof(Bitmap), (LPSTR)&Bitmap);
	unsigned int bitmap_bytes_per_pixel = 4;
	unsigned int bitmap_scanline_size = (((Bitmap.bmWidth * bitmap_bytes_per_pixel) + (4 - 1)) & ~(4 - 1));