release/src/router/nettle/rsa2sexp.c

   1 /* rsa2sexp.c
   2  *
   3  */
   4
   5 /* nettle, low-level cryptographics library
   6  *
   7  * Copyright (C) 2002 Niels Möller
   8  *
   9  * The nettle library is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU Lesser General Public License as published by
  11  * the Free Software Foundation; either version 2.1 of the License, or (at your
  12  * option) any later version.
  13  *
  14  * The nettle library is distributed in the hope that it will be useful, but
  15  * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  16  * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public
  17  * License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public License
  20  * along with the nettle library; see the file COPYING.LIB.  If not, write to
  21  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
  22  * MA 02111-1301, USA.
  23  */
  24
  25 #if HAVE_CONFIG_H
  26 # include "config.h"
  27 #endif
  28
  29 #include "rsa.h"
  30
  31 #include "sexp.h"
  32
  33 int
  34 rsa_keypair_to_sexp(struct nettle_buffer *buffer,
  35                     const char *algorithm_name,
  36                     const struct rsa_public_key *pub,
  37                     const struct rsa_private_key *priv)
  38 {
  39   if (!algorithm_name)
  40     algorithm_name = "rsa-pkcs1";
  41
  42   if (priv)
  43     return sexp_format(buffer,
  44                        "(private-key(%0s(n%b)(e%b)"
  45                        "(d%b)(p%b)(q%b)(a%b)(b%b)(c%b)))",
  46                        algorithm_name, pub->n, pub->e,
  47                        priv->d, priv->p, priv->q,
  48                        priv->a, priv->b, priv->c);
  49   else
  50     return sexp_format(buffer, "(public-key(%0s(n%b)(e%b)))",
  51                        algorithm_name, pub->n, pub->e);
  52 }