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comparison libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c @ 382:0cbe8f6dbf9e

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propagate from branch 'au.asn.ucc.matt.ltc.dropbear' (head 2af22fb4e878750b88f80f90d439b316d229796f) to branch 'au.asn.ucc.matt.dropbear' (head 02c413252c90e9de8e03d91e9939dde3029f5c0a)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 11 Jan 2007 02:41:05 +0000
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children f849a5ca2efc
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379:b66a00272a90 382:0cbe8f6dbf9e
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.com
10 */
11 #include "tomcrypt.h"
12
13 /**
14 @file der_decode_boolean.c
15 ASN.1 DER, decode a BOOLEAN, Tom St Denis
16 */
17
18
19 #ifdef LTC_DER
20
21 /**
22 Read a BOOLEAN
23 @param in The destination for the DER encoded BOOLEAN
24 @param inlen The size of the DER BOOLEAN
25 @param out [out] The boolean to decode
26 @return CRYPT_OK if successful
27 */
28 int der_decode_boolean(const unsigned char *in, unsigned long inlen,
29 int *out)
30 {
31 LTC_ARGCHK(in != NULL);
32 LTC_ARGCHK(out != NULL);
33
34 if (inlen != 3 || in[0] != 0x01 || in[1] != 0x01 || (in[2] != 0x00 && in[2] != 0xFF)) {
35 return CRYPT_INVALID_ARG;
36 }
37
38 *out = (in[2]==0xFF) ? 1 : 0;
39
40 return CRYPT_OK;
41 }
42
43 #endif
44
45 /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c,v $ */
46 /* $Revision: 1.1 $ */
47 /* $Date: 2006/04/22 17:01:59 $ */