#include <stdio.h>
#include <errno.h>

#include <nettle/md5.h>

#include "capwap_crypto.h"


#define BLOCK_SIZE 4096


int cw_fgetmd5sum(uint8_t *digest, FILE *infile)
{
	struct md5_ctx ctx;
	uint8_t buffer[BLOCK_SIZE];
	md5_init(&ctx);

	while (!feof(infile)){
		int bytes = fread(buffer,1,sizeof(buffer),infile);
		md5_update(&ctx,bytes,buffer);
	}		

	if (ferror(infile))
		return errno;
	
	md5_digest(&ctx, MD5_DIGEST_SIZE, digest);
	return 0;
}