/* 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"/**  @file der_encode_printable_string.c  ASN.1 DER, encode a printable STRING, Tom St Denis*/#ifdef LTC_DER/**  Store an printable STRING  @param in       The array of printable to store (one per char)  @param inlen    The number of printable to store  @param out      [out] The destination for the DER encoded printable STRING  @param outlen   [in/out] The max size and resulting size of the DER printable STRING  @return CRYPT_OK if successful*/int der_encode_printable_string(const unsigned char *in, unsigned long inlen,                                unsigned char *out, unsigned long *outlen){   unsigned long x, y, len;   int           err;   LTC_ARGCHK(in     != NULL);   LTC_ARGCHK(out    != NULL);   LTC_ARGCHK(outlen != NULL);   /* get the size */   if ((err = der_length_printable_string(in, inlen, &len)) != CRYPT_OK) {      return err;    }   /* too big? */   if (len > *outlen) {      *outlen = len;      return CRYPT_BUFFER_OVERFLOW;   }   /* encode the header+len */   x = 0;   out[x++] = 0x13;   if (inlen < 128) {      out[x++] = (unsigned char)inlen;   } else if (inlen < 256) {      out[x++] = 0x81;      out[x++] = (unsigned char)inlen;   } else if (inlen < 65536UL) {      out[x++] = 0x82;      out[x++] = (unsigned char)((inlen>>8)&255);      out[x++] = (unsigned char)(inlen&255);   } else if (inlen < 16777216UL) {      out[x++] = 0x83;      out[x++] = (unsigned char)((inlen>>16)&255);      out[x++] = (unsigned char)((inlen>>8)&255);      out[x++] = (unsigned char)(inlen&255);   } else {      return CRYPT_INVALID_ARG;   }   /* store octets */   for (y = 0; y < inlen; y++) {       out[x++] = der_printable_char_encode(in[y]);   }   /* retun length */   *outlen = x;   return CRYPT_OK;}#endif/* $Source: /cvs/libtom/libtomcrypt/src/pk/asn1/der/printable_string/der_encode_printable_string.c,v $ *//* $Revision: 1.4 $ *//* $Date: 2006/12/04 21:34:03 $ */