1 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 2 * All rights reserved. 3 * 4 * This package is an SSL implementation written 5 * by Eric Young (eay (at) cryptsoft.com). 6 * The implementation was written so as to conform with Netscapes SSL. 7 * 8 * This library is free for commercial and non-commercial use as long as 9 * the following conditions are aheared to. The following conditions 10 * apply to all code found in this distribution, be it the RC4, RSA, 11 * lhash, DES, etc., code; not just the SSL code. The SSL documentation 12 * included with this distribution is covered by the same copyright terms 13 * except that the holder is Tim Hudson (tjh (at) cryptsoft.com). 14 * 15 * Copyright remains Eric Young's, and as such any Copyright notices in 16 * the code are not to be removed. 17 * If this package is used in a product, Eric Young should be given attribution 18 * as the author of the parts of the library used. 19 * This can be in the form of a textual message at program startup or 20 * in documentation (online or textual) provided with the package. 21 * 22 * Redistribution and use in source and binary forms, with or without 23 * modification, are permitted provided that the following conditions 24 * are met: 25 * 1. Redistributions of source code must retain the copyright 26 * notice, this list of conditions and the following disclaimer. 27 * 2. Redistributions in binary form must reproduce the above copyright 28 * notice, this list of conditions and the following disclaimer in the 29 * documentation and/or other materials provided with the distribution. 30 * 3. All advertising materials mentioning features or use of this software 31 * must display the following acknowledgement: 32 * "This product includes cryptographic software written by 33 * Eric Young (eay (at) cryptsoft.com)" 34 * The word 'cryptographic' can be left out if the rouines from the library 35 * being used are not cryptographic related :-). 36 * 4. If you include any Windows specific code (or a derivative thereof) from 37 * the apps directory (application code) you must include an acknowledgement: 38 * "This product includes software written by Tim Hudson (tjh (at) cryptsoft.com)" 39 * 40 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND 41 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 42 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 43 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 44 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 45 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 46 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 48 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 49 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 50 * SUCH DAMAGE. 51 * 52 * The licence and distribution terms for any publically available version or 53 * derivative of this code cannot be changed. i.e. this code cannot simply be 54 * copied and put under another distribution licence 55 * [including the GNU Public Licence.] */ 56 57 #include <openssl/evp.h> 58 59 #include <assert.h> 60 #include <string.h> 61 62 #include <openssl/dsa.h> 63 #include <openssl/ec.h> 64 #include <openssl/err.h> 65 #include <openssl/mem.h> 66 #include <openssl/nid.h> 67 #include <openssl/rsa.h> 68 #include <openssl/thread.h> 69 70 #include "internal.h" 71 #include "../internal.h" 72 73 74 EVP_PKEY *EVP_PKEY_new(void) { 75 EVP_PKEY *ret; 76 77 ret = OPENSSL_malloc(sizeof(EVP_PKEY)); 78 if (ret == NULL) { 79 OPENSSL_PUT_ERROR(EVP, ERR_R_MALLOC_FAILURE); 80 return NULL; 81 } 82 83 OPENSSL_memset(ret, 0, sizeof(EVP_PKEY)); 84 ret->type = EVP_PKEY_NONE; 85 ret->references = 1; 86 87 return ret; 88 } 89 90 static void free_it(EVP_PKEY *pkey) { 91 if (pkey->ameth && pkey->ameth->pkey_free) { 92 pkey->ameth->pkey_free(pkey); 93 pkey->pkey.ptr = NULL; 94 pkey->type = EVP_PKEY_NONE; 95 } 96 } 97 98 void EVP_PKEY_free(EVP_PKEY *pkey) { 99 if (pkey == NULL) { 100 return; 101 } 102 103 if (!CRYPTO_refcount_dec_and_test_zero(&pkey->references)) { 104 return; 105 } 106 107 free_it(pkey); 108 OPENSSL_free(pkey); 109 } 110 111 int EVP_PKEY_up_ref(EVP_PKEY *pkey) { 112 CRYPTO_refcount_inc(&pkey->references); 113 return 1; 114 } 115 116 int EVP_PKEY_is_opaque(const EVP_PKEY *pkey) { 117 if (pkey->ameth && pkey->ameth->pkey_opaque) { 118 return pkey->ameth->pkey_opaque(pkey); 119 } 120 return 0; 121 } 122 123 int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b) { 124 if (a->type != b->type) { 125 return -1; 126 } 127 128 if (a->ameth) { 129 int ret; 130 // Compare parameters if the algorithm has them 131 if (a->ameth->param_cmp) { 132 ret = a->ameth->param_cmp(a, b); 133 if (ret <= 0) { 134 return ret; 135 } 136 } 137 138 if (a->ameth->pub_cmp) { 139 return a->ameth->pub_cmp(a, b); 140 } 141 } 142 143 return -2; 144 } 145 146 int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from) { 147 if (to->type != from->type) { 148 OPENSSL_PUT_ERROR(EVP, EVP_R_DIFFERENT_KEY_TYPES); 149 goto err; 150 } 151 152 if (EVP_PKEY_missing_parameters(from)) { 153 OPENSSL_PUT_ERROR(EVP, EVP_R_MISSING_PARAMETERS); 154 goto err; 155 } 156 157 if (from->ameth && from->ameth->param_copy) { 158 return from->ameth->param_copy(to, from); 159 } 160 161 err: 162 return 0; 163 } 164 165 int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey) { 166 if (pkey->ameth && pkey->ameth->param_missing) { 167 return pkey->ameth->param_missing(pkey); 168 } 169 return 0; 170 } 171 172 int EVP_PKEY_size(const EVP_PKEY *pkey) { 173 if (pkey && pkey->ameth && pkey->ameth->pkey_size) { 174 return pkey->ameth->pkey_size(pkey); 175 } 176 return 0; 177 } 178 179 int EVP_PKEY_bits(EVP_PKEY *pkey) { 180 if (pkey && pkey->ameth && pkey->ameth->pkey_bits) { 181 return pkey->ameth->pkey_bits(pkey); 182 } 183 return 0; 184 } 185 186 int EVP_PKEY_id(const EVP_PKEY *pkey) { 187 return pkey->type; 188 } 189 190 // evp_pkey_asn1_find returns the ASN.1 method table for the given |nid|, which 191 // should be one of the |EVP_PKEY_*| values. It returns NULL if |nid| is 192 // unknown. 193 static const EVP_PKEY_ASN1_METHOD *evp_pkey_asn1_find(int nid) { 194 switch (nid) { 195 case EVP_PKEY_RSA: 196 return &rsa_asn1_meth; 197 case EVP_PKEY_EC: 198 return &ec_asn1_meth; 199 case EVP_PKEY_DSA: 200 return &dsa_asn1_meth; 201 case EVP_PKEY_ED25519: 202 return &ed25519_asn1_meth; 203 default: 204 return NULL; 205 } 206 } 207 208 int EVP_PKEY_type(int nid) { 209 const EVP_PKEY_ASN1_METHOD *meth = evp_pkey_asn1_find(nid); 210 if (meth == NULL) { 211 return NID_undef; 212 } 213 return meth->pkey_id; 214 } 215 216 int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key) { 217 if (EVP_PKEY_assign_RSA(pkey, key)) { 218 RSA_up_ref(key); 219 return 1; 220 } 221 return 0; 222 } 223 224 int EVP_PKEY_assign_RSA(EVP_PKEY *pkey, RSA *key) { 225 return EVP_PKEY_assign(pkey, EVP_PKEY_RSA, key); 226 } 227 228 RSA *EVP_PKEY_get0_RSA(EVP_PKEY *pkey) { 229 if (pkey->type != EVP_PKEY_RSA) { 230 OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_AN_RSA_KEY); 231 return NULL; 232 } 233 return pkey->pkey.rsa; 234 } 235 236 RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey) { 237 RSA *rsa = EVP_PKEY_get0_RSA(pkey); 238 if (rsa != NULL) { 239 RSA_up_ref(rsa); 240 } 241 return rsa; 242 } 243 244 int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key) { 245 if (EVP_PKEY_assign_DSA(pkey, key)) { 246 DSA_up_ref(key); 247 return 1; 248 } 249 return 0; 250 } 251 252 int EVP_PKEY_assign_DSA(EVP_PKEY *pkey, DSA *key) { 253 return EVP_PKEY_assign(pkey, EVP_PKEY_DSA, key); 254 } 255 256 DSA *EVP_PKEY_get0_DSA(EVP_PKEY *pkey) { 257 if (pkey->type != EVP_PKEY_DSA) { 258 OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_A_DSA_KEY); 259 return NULL; 260 } 261 return pkey->pkey.dsa; 262 } 263 264 DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey) { 265 DSA *dsa = EVP_PKEY_get0_DSA(pkey); 266 if (dsa != NULL) { 267 DSA_up_ref(dsa); 268 } 269 return dsa; 270 } 271 272 int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) { 273 if (EVP_PKEY_assign_EC_KEY(pkey, key)) { 274 EC_KEY_up_ref(key); 275 return 1; 276 } 277 return 0; 278 } 279 280 int EVP_PKEY_assign_EC_KEY(EVP_PKEY *pkey, EC_KEY *key) { 281 return EVP_PKEY_assign(pkey, EVP_PKEY_EC, key); 282 } 283 284 EC_KEY *EVP_PKEY_get0_EC_KEY(EVP_PKEY *pkey) { 285 if (pkey->type != EVP_PKEY_EC) { 286 OPENSSL_PUT_ERROR(EVP, EVP_R_EXPECTING_AN_EC_KEY_KEY); 287 return NULL; 288 } 289 return pkey->pkey.ec; 290 } 291 292 EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey) { 293 EC_KEY *ec_key = EVP_PKEY_get0_EC_KEY(pkey); 294 if (ec_key != NULL) { 295 EC_KEY_up_ref(ec_key); 296 } 297 return ec_key; 298 } 299 300 DH *EVP_PKEY_get0_DH(EVP_PKEY *pkey) { return NULL; } 301 302 int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key) { 303 if (!EVP_PKEY_set_type(pkey, type)) { 304 return 0; 305 } 306 pkey->pkey.ptr = key; 307 return key != NULL; 308 } 309 310 int EVP_PKEY_set_type(EVP_PKEY *pkey, int type) { 311 const EVP_PKEY_ASN1_METHOD *ameth; 312 313 if (pkey && pkey->pkey.ptr) { 314 free_it(pkey); 315 } 316 317 ameth = evp_pkey_asn1_find(type); 318 if (ameth == NULL) { 319 OPENSSL_PUT_ERROR(EVP, EVP_R_UNSUPPORTED_ALGORITHM); 320 ERR_add_error_dataf("algorithm %d", type); 321 return 0; 322 } 323 324 if (pkey) { 325 pkey->ameth = ameth; 326 pkey->type = pkey->ameth->pkey_id; 327 } 328 329 return 1; 330 } 331 332 333 334 int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b) { 335 if (a->type != b->type) { 336 return -1; 337 } 338 if (a->ameth && a->ameth->param_cmp) { 339 return a->ameth->param_cmp(a, b); 340 } 341 return -2; 342 } 343 344 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md) { 345 return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD, 0, 346 (void *)md); 347 } 348 349 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **out_md) { 350 return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_GET_MD, 351 0, (void *)out_md); 352 } 353 354 void OpenSSL_add_all_algorithms(void) {} 355 356 void OPENSSL_add_all_algorithms_conf(void) {} 357 358 void OpenSSL_add_all_ciphers(void) {} 359 360 void OpenSSL_add_all_digests(void) {} 361 362 void EVP_cleanup(void) {} 363
