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 36#include <stdio.h> 37#include <stdlib.h> 38#include <dsa.h> 39 40#include <roken.h> 41 42/* 43 * 44 */ 45 46DSA * 47DSA_new(void) 48{ 49 DSA *dsa = calloc(1, sizeof(*dsa)); 50 dsa->meth = rk_UNCONST(DSA_get_default_method()); 51 dsa->references = 1; 52 return dsa; 53} 54 55void 56DSA_free(DSA *dsa) 57{ 58 if (dsa->references <= 0) 59 abort(); 60 61 if (--dsa->references > 0) 62 return; 63 64 (*dsa->meth->finish)(dsa); 65 66#define free_if(f) if (f) { BN_free(f); } 67 free_if(dsa->p); 68 free_if(dsa->q); 69 free_if(dsa->g); 70 free_if(dsa->pub_key); 71 free_if(dsa->priv_key); 72 free_if(dsa->kinv); 73 free_if(dsa->r); 74#undef free_if 75 76 memset(dsa, 0, sizeof(*dsa)); 77 free(dsa); 78 79} 80 81int 82DSA_up_ref(DSA *dsa) 83{ 84 return ++dsa->references; 85} 86 87/* 88 * 89 */ 90 91static const DSA_METHOD dsa_null_method = { 92 "hcrypto null DSA" 93}; 94 95const DSA_METHOD * 96DSA_null_method(void) 97{ 98 return &dsa_null_method; 99} 100 101 102const DSA_METHOD *dsa_default_mech = &dsa_null_method; 103 104void 105DSA_set_default_method(const DSA_METHOD *mech) 106{ 107 dsa_default_mech = mech; 108} 109 110const DSA_METHOD * 111DSA_get_default_method(void) 112{ 113 return dsa_default_mech; 114} 115 116int 117DSA_verify(int type, const unsigned char * digest, int digest_len, 118 const unsigned char *sig, int sig_len, DSA *dsa) 119{ 120 return -1; 121} 122