38 lines
824 B
C
38 lines
824 B
C
/* LibTomCrypt, modular cryptographic library -- Tom St Denis
|
|
*
|
|
* LibTomCrypt is a library that provides various cryptographic
|
|
* algorithms in a highly modular and flexible manner.
|
|
*
|
|
* The library is free for all purposes without any express
|
|
* guarantee it works.
|
|
*
|
|
* Tom St Denis, tomstdenis@iahu.ca, http://libtomcrypt.org
|
|
*/
|
|
#include "mycrypt.h"
|
|
|
|
#ifdef PACKET
|
|
|
|
int packet_valid_header(unsigned char *src, int section, int subsection)
|
|
{
|
|
unsigned long ver;
|
|
|
|
_ARGCHK(src != NULL);
|
|
|
|
/* check version */
|
|
ver = ((unsigned long)src[0]) | ((unsigned long)src[1] << 8U);
|
|
if (CRYPT < ver) {
|
|
return CRYPT_INVALID_PACKET;
|
|
}
|
|
|
|
/* check section and subsection */
|
|
if (section != (int)src[2] || subsection != (int)src[3]) {
|
|
return CRYPT_INVALID_PACKET;
|
|
}
|
|
|
|
return CRYPT_OK;
|
|
}
|
|
|
|
#endif
|
|
|
|
|