dsa_lib.c revision 656d9c7f52f88b3a3daccafa7655dec086c4756e
1656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* crypto/dsa/dsa_lib.c */ 2656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) 3656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * All rights reserved. 4656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 5656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This package is an SSL implementation written 6656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * by Eric Young (eay@cryptsoft.com). 7656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The implementation was written so as to conform with Netscapes SSL. 8656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 9656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This library is free for commercial and non-commercial use as long as 10656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the following conditions are aheared to. The following conditions 11656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * apply to all code found in this distribution, be it the RC4, RSA, 12656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * lhash, DES, etc., code; not just the SSL code. The SSL documentation 13656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * included with this distribution is covered by the same copyright terms 14656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * except that the holder is Tim Hudson (tjh@cryptsoft.com). 15656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 16656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Copyright remains Eric Young's, and as such any Copyright notices in 17656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the code are not to be removed. 18656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * If this package is used in a product, Eric Young should be given attribution 19656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * as the author of the parts of the library used. 20656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * This can be in the form of a textual message at program startup or 21656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * in documentation (online or textual) provided with the package. 22656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 23656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Redistribution and use in source and binary forms, with or without 24656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * modification, are permitted provided that the following conditions 25656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * are met: 26656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 1. Redistributions of source code must retain the copyright 27656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer. 28656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 2. Redistributions in binary form must reproduce the above copyright 29656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * notice, this list of conditions and the following disclaimer in the 30656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * documentation and/or other materials provided with the distribution. 31656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 3. All advertising materials mentioning features or use of this software 32656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * must display the following acknowledgement: 33656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes cryptographic software written by 34656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * Eric Young (eay@cryptsoft.com)" 35656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The word 'cryptographic' can be left out if the rouines from the library 36656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * being used are not cryptographic related :-). 37656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 4. If you include any Windows specific code (or a derivative thereof) from 38656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * the apps directory (application code) you must include an acknowledgement: 39656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" 40656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 41656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 42656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 43656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 44656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 45656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 46656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 47656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 48656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 49656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 50656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 51656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * SUCH DAMAGE. 52656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * 53656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * The licence and distribution terms for any publically available version or 54656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * derivative of this code cannot be changed. i.e. this code cannot simply be 55656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * copied and put under another distribution licence 56656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * [including the GNU Public Licence.] 57656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 58656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 59656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project/* Original version from Steven Schoch <schoch@sheba.arc.nasa.gov> */ 60656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 61656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <stdio.h> 62656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include "cryptlib.h" 63656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/bn.h> 64656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/dsa.h> 65656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/asn1.h> 66656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef OPENSSL_NO_ENGINE 67656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/engine.h> 68656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 69656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef OPENSSL_NO_DH 70656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#include <openssl/dh.h> 71656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 72656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 73656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectconst char DSA_version[]="DSA" OPENSSL_VERSION_PTEXT; 74656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 75656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectstatic const DSA_METHOD *default_DSA_method = NULL; 76656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 77656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectvoid DSA_set_default_method(const DSA_METHOD *meth) 78656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 79656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project default_DSA_method = meth; 80656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 81656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 82656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectconst DSA_METHOD *DSA_get_default_method(void) 83656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 84656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(!default_DSA_method) 85656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project default_DSA_method = DSA_OpenSSL(); 86656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return default_DSA_method; 87656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 88656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 89656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectDSA *DSA_new(void) 90656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 91656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return DSA_new_method(NULL); 92656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 93656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 94656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint DSA_set_method(DSA *dsa, const DSA_METHOD *meth) 95656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 96656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* NB: The caller is specifically setting a method, so it's not up to us 97656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * to deal with which ENGINE it comes from. */ 98656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project const DSA_METHOD *mtmp; 99656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project mtmp = dsa->meth; 100656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (mtmp->finish) mtmp->finish(dsa); 101656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef OPENSSL_NO_ENGINE 102656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (dsa->engine) 103656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 104656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ENGINE_finish(dsa->engine); 105656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project dsa->engine = NULL; 106656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 107656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 108656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project dsa->meth = meth; 109656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (meth->init) meth->init(dsa); 110656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return 1; 111656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 112656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 113656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectDSA *DSA_new_method(ENGINE *engine) 114656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 115656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DSA *ret; 116656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 117656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=(DSA *)OPENSSL_malloc(sizeof(DSA)); 118656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret == NULL) 119656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 120656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DSAerr(DSA_F_DSA_NEW_METHOD,ERR_R_MALLOC_FAILURE); 121656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(NULL); 122656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 123656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->meth = DSA_get_default_method(); 124656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef OPENSSL_NO_ENGINE 125656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (engine) 126656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 127656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (!ENGINE_init(engine)) 128656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 129656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_ENGINE_LIB); 130656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(ret); 131656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return NULL; 132656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 133656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->engine = engine; 134656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 135656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project else 136656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->engine = ENGINE_get_default_DSA(); 137656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(ret->engine) 138656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 139656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->meth = ENGINE_get_DSA(ret->engine); 140656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(!ret->meth) 141656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 142656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DSAerr(DSA_F_DSA_NEW_METHOD, 143656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ERR_R_ENGINE_LIB); 144656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ENGINE_finish(ret->engine); 145656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(ret); 146656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return NULL; 147656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 148656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 149656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 150656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 151656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->pad=0; 152656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->version=0; 153656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->write_params=1; 154656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->p=NULL; 155656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->q=NULL; 156656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->g=NULL; 157656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 158656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->pub_key=NULL; 159656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->priv_key=NULL; 160656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 161656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->kinv=NULL; 162656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->r=NULL; 163656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->method_mont_p=NULL; 164656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 165656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->references=1; 166656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->flags=ret->meth->flags; 167656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DSA, ret, &ret->ex_data); 168656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret->meth->init != NULL) && !ret->meth->init(ret)) 169656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 170656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef OPENSSL_NO_ENGINE 171656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret->engine) 172656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ENGINE_finish(ret->engine); 173656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 174656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DSA, ret, &ret->ex_data); 175656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(ret); 176656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=NULL; 177656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 178656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 179656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 180656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 181656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 182656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectvoid DSA_free(DSA *r) 183656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 184656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int i; 185656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 186656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r == NULL) return; 187656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 188656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_DSA); 189656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef REF_PRINT 190656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project REF_PRINT("DSA",r); 191656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 192656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i > 0) return; 193656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef REF_CHECK 194656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i < 0) 195656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 196656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fprintf(stderr,"DSA_free, bad reference count\n"); 197656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project abort(); 198656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 199656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 200656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 201656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(r->meth->finish) 202656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project r->meth->finish(r); 203656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef OPENSSL_NO_ENGINE 204656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if(r->engine) 205656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ENGINE_finish(r->engine); 206656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 207656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 208656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DSA, r, &r->ex_data); 209656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 210656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->p != NULL) BN_clear_free(r->p); 211656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->q != NULL) BN_clear_free(r->q); 212656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->g != NULL) BN_clear_free(r->g); 213656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->pub_key != NULL) BN_clear_free(r->pub_key); 214656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->priv_key != NULL) BN_clear_free(r->priv_key); 215656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->kinv != NULL) BN_clear_free(r->kinv); 216656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->r != NULL) BN_clear_free(r->r); 217656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project OPENSSL_free(r); 218656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 219656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 220656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint DSA_up_ref(DSA *r) 221656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 222656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DSA); 223656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef REF_PRINT 224656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project REF_PRINT("DSA",r); 225656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 226656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifdef REF_CHECK 227656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (i < 2) 228656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 229656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project fprintf(stderr, "DSA_up_ref, bad reference count\n"); 230656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project abort(); 231656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 232656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 233656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ((i > 1) ? 1 : 0); 234656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 235656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 236656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint DSA_size(const DSA *r) 237656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 238656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project int ret,i; 239656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ASN1_INTEGER bs; 240656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project unsigned char buf[4]; /* 4 bytes looks really small. 241656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project However, i2d_ASN1_INTEGER() will not look 242656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project beyond the first byte, as long as the second 243656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project parameter is NULL. */ 244656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 245656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=BN_num_bits(r->q); 246656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bs.length=(i+7)/8; 247656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bs.data=buf; 248656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project bs.type=V_ASN1_INTEGER; 249656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* If the top bit is set the asn1 encoding is 1 larger. */ 250656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project buf[0]=0xff; 251656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 252656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i=i2d_ASN1_INTEGER(&bs,NULL); 253656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project i+=i; /* r and s */ 254656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret=ASN1_object_size(1,i,V_ASN1_SEQUENCE); 255656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(ret); 256656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 257656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 258656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 259656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 260656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 261656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DSA, argl, argp, 262656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project new_func, dup_func, free_func); 263656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 264656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 265656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectint DSA_set_ex_data(DSA *d, int idx, void *arg) 266656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 267656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(CRYPTO_set_ex_data(&d->ex_data,idx,arg)); 268656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 269656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 270656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Projectvoid *DSA_get_ex_data(DSA *d, int idx) 271656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 272656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return(CRYPTO_get_ex_data(&d->ex_data,idx)); 273656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 274656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 275656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#ifndef OPENSSL_NO_DH 276656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source ProjectDH *DSA_dup_DH(const DSA *r) 277656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project { 278656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project /* DSA has p, q, g, optional pub_key, optional priv_key. 279656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project * DH has p, optional length, g, optional pub_key, optional priv_key. 280656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project */ 281656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 282656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DH *ret = NULL; 283656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 284656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r == NULL) 285656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 286656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret = DH_new(); 287656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret == NULL) 288656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 289656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->p != NULL) 290656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret->p = BN_dup(r->p)) == NULL) 291656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 292656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->q != NULL) 293656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project ret->length = BN_num_bits(r->q); 294656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->g != NULL) 295656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret->g = BN_dup(r->g)) == NULL) 296656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 297656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->pub_key != NULL) 298656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret->pub_key = BN_dup(r->pub_key)) == NULL) 299656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 300656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (r->priv_key != NULL) 301656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if ((ret->priv_key = BN_dup(r->priv_key)) == NULL) 302656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project goto err; 303656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 304656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return ret; 305656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project 306656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project err: 307656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project if (ret != NULL) 308656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project DH_free(ret); 309656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project return NULL; 310656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project } 311656d9c7f52f88b3a3daccafa7655dec086c4756eThe Android Open Source Project#endif 312