--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/packet_valid_header.c	Mon May 31 18:25:41 2004 +0000
@@ -0,0 +1,37 @@
+/* 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, [email protected], 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
+
+