Mercurial > dropbear
diff libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c @ 435:337c45621e81
merge of 'a9b0496634cdd25647b65e585cc3240f3fa699ee'
and 'c22be8b8f570b48e9662dac32c7b3e7148a42206'
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Thu, 22 Feb 2007 14:53:49 +0000 |
parents | 0cbe8f6dbf9e |
children | f849a5ca2efc |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c Thu Feb 22 14:53:49 2007 +0000 @@ -0,0 +1,47 @@ +/* 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.com + */ +#include "tomcrypt.h" + +/** + @file der_decode_boolean.c + ASN.1 DER, decode a BOOLEAN, Tom St Denis +*/ + + +#ifdef LTC_DER + +/** + Read a BOOLEAN + @param in The destination for the DER encoded BOOLEAN + @param inlen The size of the DER BOOLEAN + @param out [out] The boolean to decode + @return CRYPT_OK if successful +*/ +int der_decode_boolean(const unsigned char *in, unsigned long inlen, + int *out) +{ + LTC_ARGCHK(in != NULL); + LTC_ARGCHK(out != NULL); + + if (inlen != 3 || in[0] != 0x01 || in[1] != 0x01 || (in[2] != 0x00 && in[2] != 0xFF)) { + return CRYPT_INVALID_ARG; + } + + *out = (in[2]==0xFF) ? 1 : 0; + + return CRYPT_OK; +} + +#endif + +/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/boolean/der_decode_boolean.c,v $ */ +/* $Revision: 1.1 $ */ +/* $Date: 2006/04/22 17:01:59 $ */