actube/src/capwap/md5sum.c

31 lines
452 B
C

#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;
}