/* 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, tomstdenis@gmail.com, http://libtomcrypt.com */#include "tomcrypt.h"#include <stdarg.h>/**  @file der_encode_sequence_multi.c  ASN.1 DER, encode a SEQUENCE, Tom St Denis*/#ifdef LTC_DER/**  Encode a SEQUENCE type using a VA list  @param out    [out] Destination for data  @param outlen [in/out] Length of buffer and resulting length of output  @remark <...> is of the form <type, size, data> (int, unsigned long, void*)  @return CRYPT_OK on success*/  int der_encode_sequence_multi(unsigned char *out, unsigned long *outlen, ...){   int           err, type;   unsigned long size, x;   void          *data;   va_list       args;   ltc_asn1_list *list;   LTC_ARGCHK(out    != NULL);   LTC_ARGCHK(outlen != NULL);   /* get size of output that will be required */   va_start(args, outlen);   x = 0;   for (;;) {       type = va_arg(args, int);       size = va_arg(args, unsigned long);       data = va_arg(args, void*);       if (type == LTC_ASN1_EOL) {           break;       }       switch (type) {           case LTC_ASN1_BOOLEAN:           case LTC_ASN1_INTEGER:           case LTC_ASN1_SHORT_INTEGER:           case LTC_ASN1_BIT_STRING:           case LTC_ASN1_OCTET_STRING:           case LTC_ASN1_NULL:           case LTC_ASN1_OBJECT_IDENTIFIER:           case LTC_ASN1_IA5_STRING:           case LTC_ASN1_PRINTABLE_STRING:           case LTC_ASN1_UTF8_STRING:           case LTC_ASN1_UTCTIME:           case LTC_ASN1_SEQUENCE:           case LTC_ASN1_SET:           case LTC_ASN1_SETOF:                ++x;                 break;                     default:               va_end(args);               return CRYPT_INVALID_ARG;       }   }   va_end(args);   /* allocate structure for x elements */   if (x == 0) {      return CRYPT_NOP;   }   list = XCALLOC(sizeof(*list), x);   if (list == NULL) {      return CRYPT_MEM;   }   /* fill in the structure */   va_start(args, outlen);   x = 0;   for (;;) {       type = va_arg(args, int);       size = va_arg(args, unsigned long);       data = va_arg(args, void*);       if (type == LTC_ASN1_EOL) {           break;       }       switch (type) {           case LTC_ASN1_BOOLEAN:           case LTC_ASN1_INTEGER:           case LTC_ASN1_SHORT_INTEGER:           case LTC_ASN1_BIT_STRING:           case LTC_ASN1_OCTET_STRING:           case LTC_ASN1_NULL:           case LTC_ASN1_OBJECT_IDENTIFIER:           case LTC_ASN1_IA5_STRING:           case LTC_ASN1_PRINTABLE_STRING:           case LTC_ASN1_UTF8_STRING:           case LTC_ASN1_UTCTIME:           case LTC_ASN1_SEQUENCE:           case LTC_ASN1_SET:           case LTC_ASN1_SETOF:                list[x].type   = type;                list[x].size   = size;                list[x++].data = data;                break;                    default:               va_end(args);               err = CRYPT_INVALID_ARG;               goto LBL_ERR;       }   }   va_end(args);   err = der_encode_sequence(list, x, out, outlen);   LBL_ERR:   XFREE(list);   return err;}#endif/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/sequence/der_encode_sequence_multi.c,v $ *//* $Revision: 1.11 $ *//* $Date: 2006/11/26 02:25:18 $ */