Line data    Source code

       1             : /*
       2             :  * Copyright (c) 2006 Kungliga Tekniska Högskolan
       3             :  * (Royal Institute of Technology, Stockholm, Sweden).
       4             :  * All rights reserved.
       5             :  *
       6             :  * Redistribution and use in source and binary forms, with or without
       7             :  * modification, are permitted provided that the following conditions
       8             :  * are met:
       9             :  *
      10             :  * 1. Redistributions of source code must retain the above copyright
      11             :  *    notice, this list of conditions and the following disclaimer.
      12             :  *
      13             :  * 2. Redistributions in binary form must reproduce the above copyright
      14             :  *    notice, this list of conditions and the following disclaimer in the
      15             :  *    documentation and/or other materials provided with the distribution.
      16             :  *
      17             :  * 3. Neither the name of the Institute nor the names of its contributors
      18             :  *    may be used to endorse or promote products derived from this software
      19             :  *    without specific prior written permission.
      20             :  *
      21             :  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
      22             :  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
      23             :  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
      24             :  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
      25             :  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
      26             :  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
      27             :  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
      28             :  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
      29             :  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
      30             :  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
      31             :  * SUCH DAMAGE.
      32             :  */
      33             : 
      34             : #include <config.h>
      35             : #include <roken.h>
      36             : 
      37             : #include <dsa.h>
      38             : 
      39             : /*
      40             :  *
      41             :  */
      42             : 
      43             : DSA *
      44           0 : DSA_new(void)
      45             : {
      46           0 :     DSA *dsa = calloc(1, sizeof(*dsa));
      47           0 :     dsa->meth = rk_UNCONST(DSA_get_default_method());
      48           0 :     dsa->references = 1;
      49           0 :     return dsa;
      50             : }
      51             : 
      52             : void
      53           0 : DSA_free(DSA *dsa)
      54             : {
      55           0 :     if (dsa->references <= 0)
      56           0 :         abort();
      57             : 
      58           0 :     if (--dsa->references > 0)
      59           0 :         return;
      60             : 
      61           0 :     (*dsa->meth->finish)(dsa);
      62             : 
      63             : #define free_if(f) if (f) { BN_free(f); }
      64           0 :     free_if(dsa->p);
      65           0 :     free_if(dsa->q);
      66           0 :     free_if(dsa->g);
      67           0 :     free_if(dsa->pub_key);
      68           0 :     free_if(dsa->priv_key);
      69           0 :     free_if(dsa->kinv);
      70           0 :     free_if(dsa->r);
      71             : #undef free_if
      72             : 
      73           0 :     memset_s(dsa, sizeof(*dsa), 0, sizeof(*dsa));
      74           0 :     free(dsa);
      75             : 
      76             : }
      77             : 
      78             : int
      79           0 : DSA_up_ref(DSA *dsa)
      80             : {
      81           0 :     return ++dsa->references;
      82             : }
      83             : 
      84             : /*
      85             :  *
      86             :  */
      87             : 
      88             : static const DSA_METHOD dsa_null_method = {
      89             :     "hcrypto null DSA",
      90             :     NULL,
      91             :     NULL,
      92             :     NULL,
      93             :     NULL,
      94             :     NULL,
      95             :     NULL,
      96             :     NULL,
      97             :     0,
      98             :     NULL
      99             : };
     100             : 
     101             : const DSA_METHOD *
     102           0 : DSA_null_method(void)
     103             : {
     104           0 :     return &dsa_null_method;
     105             : }
     106             : 
     107             : 
     108             : const DSA_METHOD *dsa_default_mech = &dsa_null_method;
     109             : 
     110             : void
     111           0 : DSA_set_default_method(const DSA_METHOD *mech)
     112             : {
     113           0 :     dsa_default_mech = mech;
     114           0 : }
     115             : 
     116             : const DSA_METHOD *
     117           0 : DSA_get_default_method(void)
     118             : {
     119           0 :     return dsa_default_mech;
     120             : }
     121             : 
     122             : int
     123           0 : DSA_verify(int type, const unsigned char * digest, int digest_len,
     124             :            const unsigned char *sig, int sig_len, DSA *dsa)
     125             : {
     126           0 :     return -1;
     127             : }