Mercurial > dropbear
comparison src/pk/packet_valid_header.c @ 191:1c15b283127b libtomcrypt-orig
Import of libtomcrypt 1.02 with manual path rename rearrangement etc
author | Matt Johnston <matt@ucc.asn.au> |
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date | Fri, 06 May 2005 13:23:02 +0000 |
parents | |
children | 39d5d58461d6 |
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143:5d99163f7e32 | 191:1c15b283127b |
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis | |
2 * | |
3 * LibTomCrypt is a library that provides various cryptographic | |
4 * algorithms in a highly modular and flexible manner. | |
5 * | |
6 * The library is free for all purposes without any express | |
7 * guarantee it works. | |
8 * | |
9 * Tom St Denis, [email protected], http://libtomcrypt.org | |
10 */ | |
11 #include "tomcrypt.h" | |
12 | |
13 #ifdef PACKET | |
14 | |
15 int packet_valid_header(unsigned char *src, int section, int subsection) | |
16 { | |
17 unsigned long ver; | |
18 | |
19 LTC_ARGCHK(src != NULL); | |
20 | |
21 /* check version */ | |
22 ver = ((unsigned long)src[0]) | ((unsigned long)src[1] << 8U); | |
23 if (CRYPT < ver) { | |
24 return CRYPT_INVALID_PACKET; | |
25 } | |
26 | |
27 /* check section and subsection */ | |
28 if (section != (int)src[2] || subsection != (int)src[3]) { | |
29 return CRYPT_INVALID_PACKET; | |
30 } | |
31 | |
32 return CRYPT_OK; | |
33 } | |
34 | |
35 #endif | |
36 | |
37 |