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, tomstdenis (at) gmail.com, http://libtomcrypt.com 10 */ 11 #include "tomcrypt.h" 12 13 /** 14 @file der_encode_boolean.c 15 ASN.1 DER, encode a BOOLEAN, Tom St Denis 16 */ 17 18 19 #ifdef LTC_DER 20 21 /** 22 Store a BOOLEAN 23 @param in The boolean to encode 24 @param out [out] The destination for the DER encoded BOOLEAN 25 @param outlen [in/out] The max size and resulting size of the DER BOOLEAN 26 @return CRYPT_OK if successful 27 */ 28 int der_encode_boolean(int in, 29 unsigned char *out, unsigned long *outlen) 30 { 31 LTC_ARGCHK(outlen != NULL); 32 LTC_ARGCHK(out != NULL); 33 34 if (*outlen < 3) { 35 *outlen = 3; 36 return CRYPT_BUFFER_OVERFLOW; 37 } 38 39 *outlen = 3; 40 out[0] = 0x01; 41 out[1] = 0x01; 42 out[2] = in ? 0xFF : 0x00; 43 44 return CRYPT_OK; 45 } 46 47 #endif 48 49 /* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/boolean/der_encode_boolean.c,v $ */ 50 /* $Revision: 1.3 $ */ 51 /* $Date: 2006/06/16 21:53:41 $ */ 52
