1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/os/ossrv/ssl/libcrypto/src/crypto/dsa/dsa_lib.c Fri Jun 15 03:10:57 2012 +0200
1.3 @@ -0,0 +1,324 @@
1.4 +/* crypto/dsa/dsa_lib.c */
1.5 +/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
1.6 + * All rights reserved.
1.7 + *
1.8 + * This package is an SSL implementation written
1.9 + * by Eric Young (eay@cryptsoft.com).
1.10 + * The implementation was written so as to conform with Netscapes SSL.
1.11 + *
1.12 + * This library is free for commercial and non-commercial use as long as
1.13 + * the following conditions are aheared to. The following conditions
1.14 + * apply to all code found in this distribution, be it the RC4, RSA,
1.15 + * lhash, DES, etc., code; not just the SSL code. The SSL documentation
1.16 + * included with this distribution is covered by the same copyright terms
1.17 + * except that the holder is Tim Hudson (tjh@cryptsoft.com).
1.18 + *
1.19 + * Copyright remains Eric Young's, and as such any Copyright notices in
1.20 + * the code are not to be removed.
1.21 + * If this package is used in a product, Eric Young should be given attribution
1.22 + * as the author of the parts of the library used.
1.23 + * This can be in the form of a textual message at program startup or
1.24 + * in documentation (online or textual) provided with the package.
1.25 + *
1.26 + * Redistribution and use in source and binary forms, with or without
1.27 + * modification, are permitted provided that the following conditions
1.28 + * are met:
1.29 + * 1. Redistributions of source code must retain the copyright
1.30 + * notice, this list of conditions and the following disclaimer.
1.31 + * 2. Redistributions in binary form must reproduce the above copyright
1.32 + * notice, this list of conditions and the following disclaimer in the
1.33 + * documentation and/or other materials provided with the distribution.
1.34 + * 3. All advertising materials mentioning features or use of this software
1.35 + * must display the following acknowledgement:
1.36 + * "This product includes cryptographic software written by
1.37 + * Eric Young (eay@cryptsoft.com)"
1.38 + * The word 'cryptographic' can be left out if the rouines from the library
1.39 + * being used are not cryptographic related :-).
1.40 + * 4. If you include any Windows specific code (or a derivative thereof) from
1.41 + * the apps directory (application code) you must include an acknowledgement:
1.42 + * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
1.43 + *
1.44 + * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
1.45 + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
1.46 + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
1.47 + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
1.48 + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
1.49 + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
1.50 + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
1.51 + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
1.52 + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
1.53 + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
1.54 + * SUCH DAMAGE.
1.55 + *
1.56 + * The licence and distribution terms for any publically available version or
1.57 + * derivative of this code cannot be changed. i.e. this code cannot simply be
1.58 + * copied and put under another distribution licence
1.59 + * [including the GNU Public Licence.]
1.60 + */
1.61 +
1.62 +/* Original version from Steven Schoch <schoch@sheba.arc.nasa.gov> */
1.63 +/*
1.64 + © Portions copyright (c) 2006 Nokia Corporation. All rights reserved.
1.65 + */
1.66 +
1.67 +
1.68 +#include <stdio.h>
1.69 +#include "cryptlib.h"
1.70 +#include <openssl/bn.h>
1.71 +#include <openssl/dsa.h>
1.72 +#include <openssl/asn1.h>
1.73 +#ifndef OPENSSL_NO_ENGINE
1.74 +#include <openssl/engine.h>
1.75 +#endif
1.76 +#ifndef OPENSSL_NO_DH
1.77 +#include <openssl/dh.h>
1.78 +#endif
1.79 +#if (defined(SYMBIAN) && (defined(__WINSCW__) || defined(__WINS__)))
1.80 +#include "libcrypto_wsd_macros.h"
1.81 +#include "libcrypto_wsd.h"
1.82 +#endif
1.83 +
1.84 +const char DSA_version[]="DSA" OPENSSL_VERSION_PTEXT;
1.85 +
1.86 +#ifndef EMULATOR
1.87 +static const DSA_METHOD *default_DSA_method = NULL;
1.88 +#else
1.89 +GET_STATIC_VAR_FROM_TLS(default_DSA_method,dsa_lib,const DSA_METHOD *)
1.90 +#define default_DSA_method (*GET_WSD_VAR_NAME(default_DSA_method,dsa_lib, s)())
1.91 +#endif
1.92 +
1.93 +EXPORT_C void DSA_set_default_method(const DSA_METHOD *meth)
1.94 + {
1.95 + default_DSA_method = meth;
1.96 + }
1.97 +
1.98 +EXPORT_C const DSA_METHOD *DSA_get_default_method(void)
1.99 + {
1.100 + if(!default_DSA_method)
1.101 + default_DSA_method = DSA_OpenSSL();
1.102 + return default_DSA_method;
1.103 + }
1.104 +
1.105 +EXPORT_C DSA *DSA_new(void)
1.106 + {
1.107 + return DSA_new_method(NULL);
1.108 + }
1.109 +
1.110 +EXPORT_C int DSA_set_method(DSA *dsa, const DSA_METHOD *meth)
1.111 + {
1.112 + /* NB: The caller is specifically setting a method, so it's not up to us
1.113 + * to deal with which ENGINE it comes from. */
1.114 + const DSA_METHOD *mtmp;
1.115 + mtmp = dsa->meth;
1.116 + if (mtmp->finish) mtmp->finish(dsa);
1.117 +#ifndef OPENSSL_NO_ENGINE
1.118 + if (dsa->engine)
1.119 + {
1.120 + ENGINE_finish(dsa->engine);
1.121 + dsa->engine = NULL;
1.122 + }
1.123 +#endif
1.124 + dsa->meth = meth;
1.125 + if (meth->init) meth->init(dsa);
1.126 + return 1;
1.127 + }
1.128 +
1.129 +EXPORT_C DSA *DSA_new_method(ENGINE *engine)
1.130 + {
1.131 + DSA *ret;
1.132 +
1.133 + ret=(DSA *)OPENSSL_malloc(sizeof(DSA));
1.134 + if (ret == NULL)
1.135 + {
1.136 + DSAerr(DSA_F_DSA_NEW_METHOD,ERR_R_MALLOC_FAILURE);
1.137 + return(NULL);
1.138 + }
1.139 + ret->meth = DSA_get_default_method();
1.140 +#ifndef OPENSSL_NO_ENGINE
1.141 + if (engine)
1.142 + {
1.143 + if (!ENGINE_init(engine))
1.144 + {
1.145 + DSAerr(DSA_F_DSA_NEW_METHOD, ERR_R_ENGINE_LIB);
1.146 + OPENSSL_free(ret);
1.147 + return NULL;
1.148 + }
1.149 + ret->engine = engine;
1.150 + }
1.151 + else
1.152 + ret->engine = ENGINE_get_default_DSA();
1.153 + if(ret->engine)
1.154 + {
1.155 + ret->meth = ENGINE_get_DSA(ret->engine);
1.156 + if(!ret->meth)
1.157 + {
1.158 + DSAerr(DSA_F_DSA_NEW_METHOD,
1.159 + ERR_R_ENGINE_LIB);
1.160 + ENGINE_finish(ret->engine);
1.161 + OPENSSL_free(ret);
1.162 + return NULL;
1.163 + }
1.164 + }
1.165 +#endif
1.166 +
1.167 + ret->pad=0;
1.168 + ret->version=0;
1.169 + ret->write_params=1;
1.170 + ret->p=NULL;
1.171 + ret->q=NULL;
1.172 + ret->g=NULL;
1.173 +
1.174 + ret->pub_key=NULL;
1.175 + ret->priv_key=NULL;
1.176 +
1.177 + ret->kinv=NULL;
1.178 + ret->r=NULL;
1.179 + ret->method_mont_p=NULL;
1.180 +
1.181 + ret->references=1;
1.182 + ret->flags=ret->meth->flags;
1.183 + CRYPTO_new_ex_data(CRYPTO_EX_INDEX_DSA, ret, &ret->ex_data);
1.184 + if ((ret->meth->init != NULL) && !ret->meth->init(ret))
1.185 + {
1.186 +#ifndef OPENSSL_NO_ENGINE
1.187 + if (ret->engine)
1.188 + ENGINE_finish(ret->engine);
1.189 +#endif
1.190 + CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DSA, ret, &ret->ex_data);
1.191 + OPENSSL_free(ret);
1.192 + ret=NULL;
1.193 + }
1.194 +
1.195 + return(ret);
1.196 + }
1.197 +
1.198 +EXPORT_C void DSA_free(DSA *r)
1.199 + {
1.200 + int i;
1.201 +
1.202 + if (r == NULL) return;
1.203 +
1.204 + i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_DSA);
1.205 +#ifdef REF_PRINT
1.206 + REF_PRINT("DSA",r);
1.207 +#endif
1.208 + if (i > 0) return;
1.209 +#ifdef REF_CHECK
1.210 + if (i < 0)
1.211 + {
1.212 + fprintf(stderr,"DSA_free, bad reference count\n");
1.213 + abort();
1.214 + }
1.215 +#endif
1.216 +
1.217 + if(r->meth->finish)
1.218 + r->meth->finish(r);
1.219 +#ifndef OPENSSL_NO_ENGINE
1.220 + if(r->engine)
1.221 + ENGINE_finish(r->engine);
1.222 +#endif
1.223 +
1.224 + CRYPTO_free_ex_data(CRYPTO_EX_INDEX_DSA, r, &r->ex_data);
1.225 +
1.226 + if (r->p != NULL) BN_clear_free(r->p);
1.227 + if (r->q != NULL) BN_clear_free(r->q);
1.228 + if (r->g != NULL) BN_clear_free(r->g);
1.229 + if (r->pub_key != NULL) BN_clear_free(r->pub_key);
1.230 + if (r->priv_key != NULL) BN_clear_free(r->priv_key);
1.231 + if (r->kinv != NULL) BN_clear_free(r->kinv);
1.232 + if (r->r != NULL) BN_clear_free(r->r);
1.233 + OPENSSL_free(r);
1.234 + }
1.235 +
1.236 +EXPORT_C int DSA_up_ref(DSA *r)
1.237 + {
1.238 + int i = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_DSA);
1.239 +#ifdef REF_PRINT
1.240 + REF_PRINT("DSA",r);
1.241 +#endif
1.242 +#ifdef REF_CHECK
1.243 + if (i < 2)
1.244 + {
1.245 + fprintf(stderr, "DSA_up_ref, bad reference count\n");
1.246 + abort();
1.247 + }
1.248 +#endif
1.249 + return ((i > 1) ? 1 : 0);
1.250 + }
1.251 +
1.252 +EXPORT_C int DSA_size(const DSA *r)
1.253 + {
1.254 + int ret,i;
1.255 + ASN1_INTEGER bs;
1.256 + unsigned char buf[4]; /* 4 bytes looks really small.
1.257 + However, i2d_ASN1_INTEGER() will not look
1.258 + beyond the first byte, as long as the second
1.259 + parameter is NULL. */
1.260 +
1.261 + i=BN_num_bits(r->q);
1.262 + bs.length=(i+7)/8;
1.263 + bs.data=buf;
1.264 + bs.type=V_ASN1_INTEGER;
1.265 + /* If the top bit is set the asn1 encoding is 1 larger. */
1.266 + buf[0]=0xff;
1.267 +
1.268 + i=i2d_ASN1_INTEGER(&bs,NULL);
1.269 + i+=i; /* r and s */
1.270 + ret=ASN1_object_size(1,i,V_ASN1_SEQUENCE);
1.271 + return(ret);
1.272 + }
1.273 +
1.274 +EXPORT_C int DSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
1.275 + CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
1.276 + {
1.277 + return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_DSA, argl, argp,
1.278 + new_func, dup_func, free_func);
1.279 + }
1.280 +
1.281 +EXPORT_C int DSA_set_ex_data(DSA *d, int idx, void *arg)
1.282 + {
1.283 + return(CRYPTO_set_ex_data(&d->ex_data,idx,arg));
1.284 + }
1.285 +
1.286 +EXPORT_C void *DSA_get_ex_data(DSA *d, int idx)
1.287 + {
1.288 + return(CRYPTO_get_ex_data(&d->ex_data,idx));
1.289 + }
1.290 +
1.291 +#ifndef OPENSSL_NO_DH
1.292 +EXPORT_C DH *DSA_dup_DH(const DSA *r)
1.293 + {
1.294 + /* DSA has p, q, g, optional pub_key, optional priv_key.
1.295 + * DH has p, optional length, g, optional pub_key, optional priv_key.
1.296 + */
1.297 +
1.298 + DH *ret = NULL;
1.299 +
1.300 + if (r == NULL)
1.301 + goto err;
1.302 + ret = DH_new();
1.303 + if (ret == NULL)
1.304 + goto err;
1.305 + if (r->p != NULL)
1.306 + if ((ret->p = BN_dup(r->p)) == NULL)
1.307 + goto err;
1.308 + if (r->q != NULL)
1.309 + ret->length = BN_num_bits(r->q);
1.310 + if (r->g != NULL)
1.311 + if ((ret->g = BN_dup(r->g)) == NULL)
1.312 + goto err;
1.313 + if (r->pub_key != NULL)
1.314 + if ((ret->pub_key = BN_dup(r->pub_key)) == NULL)
1.315 + goto err;
1.316 + if (r->priv_key != NULL)
1.317 + if ((ret->priv_key = BN_dup(r->priv_key)) == NULL)
1.318 + goto err;
1.319 +
1.320 + return ret;
1.321 +
1.322 + err:
1.323 + if (ret != NULL)
1.324 + DH_free(ret);
1.325 + return NULL;
1.326 + }
1.327 +#endif