487 lines
11 KiB
C
487 lines
11 KiB
C
/* crypto/evp/p_lib.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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#include <stdio.h>
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#include "cryptlib.h"
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#include <openssl/bn.h>
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#include <openssl/err.h>
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#include <openssl/objects.h>
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#include <openssl/evp.h>
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#include <openssl/asn1_mac.h>
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#include <openssl/x509.h>
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#include <openssl/rsa.h>
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#include <openssl/dsa.h>
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#include <openssl/dh.h>
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static void EVP_PKEY_free_it(EVP_PKEY *x);
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int EVP_PKEY_bits(EVP_PKEY *pkey)
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{
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if (0)
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return 0;
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#ifndef OPENSSL_NO_RSA
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else if (pkey->type == EVP_PKEY_RSA)
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return(BN_num_bits(pkey->pkey.rsa->n));
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#endif
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#ifndef OPENSSL_NO_DSA
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else if (pkey->type == EVP_PKEY_DSA)
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return(BN_num_bits(pkey->pkey.dsa->p));
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#endif
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#ifndef OPENSSL_NO_EC
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else if (pkey->type == EVP_PKEY_EC)
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{
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BIGNUM *order = BN_new();
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int ret;
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if (!order)
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{
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ERR_clear_error();
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return 0;
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}
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if (!EC_GROUP_get_order(pkey->pkey.eckey->group, order, NULL))
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{
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ERR_clear_error();
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return 0;
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}
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ret = BN_num_bits(order);
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BN_free(order);
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return ret;
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}
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#endif
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return(0);
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}
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int EVP_PKEY_size(EVP_PKEY *pkey)
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{
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if (pkey == NULL)
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return(0);
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#ifndef OPENSSL_NO_RSA
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if (pkey->type == EVP_PKEY_RSA)
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return(RSA_size(pkey->pkey.rsa));
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else
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#endif
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#ifndef OPENSSL_NO_DSA
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if (pkey->type == EVP_PKEY_DSA)
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return(DSA_size(pkey->pkey.dsa));
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#endif
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#ifndef OPENSSL_NO_ECDSA
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if (pkey->type == EVP_PKEY_EC)
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return(ECDSA_size(pkey->pkey.eckey));
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#endif
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return(0);
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}
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int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
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{
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#ifndef OPENSSL_NO_DSA
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if (pkey->type == EVP_PKEY_DSA)
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{
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int ret=pkey->save_parameters;
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if (mode >= 0)
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pkey->save_parameters=mode;
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return(ret);
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}
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#endif
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#ifndef OPENSSL_NO_EC
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if (pkey->type == EVP_PKEY_EC)
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{
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int ret = pkey->save_parameters;
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if (mode >= 0)
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pkey->save_parameters = mode;
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return(ret);
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}
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#endif
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return(0);
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}
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int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
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{
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if (to->type != from->type)
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{
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EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
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goto err;
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}
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if (EVP_PKEY_missing_parameters(from))
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{
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EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS);
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goto err;
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}
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#ifndef OPENSSL_NO_DSA
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if (to->type == EVP_PKEY_DSA)
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{
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BIGNUM *a;
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if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err;
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if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p);
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to->pkey.dsa->p=a;
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if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err;
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if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q);
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to->pkey.dsa->q=a;
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if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err;
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if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g);
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to->pkey.dsa->g=a;
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}
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#endif
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#ifndef OPENSSL_NO_EC
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if (to->type == EVP_PKEY_EC)
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{
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if (to->pkey.eckey->group != NULL)
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EC_GROUP_free(to->pkey.eckey->group);
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if ((to->pkey.eckey->group = EC_GROUP_new(
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EC_GROUP_method_of(from->pkey.eckey->group))) == NULL)
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goto err;
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if (!EC_GROUP_copy(to->pkey.eckey->group,
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from->pkey.eckey->group)) goto err;
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}
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#endif
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return(1);
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err:
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return(0);
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}
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int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
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{
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#ifndef OPENSSL_NO_DSA
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if (pkey->type == EVP_PKEY_DSA)
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{
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DSA *dsa;
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dsa=pkey->pkey.dsa;
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if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))
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return(1);
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}
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#endif
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#ifndef OPENSSL_NO_EC
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if (pkey->type == EVP_PKEY_EC)
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{
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if (pkey->pkey.eckey->group == NULL)
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return(1);
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}
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#endif
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return(0);
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}
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int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
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{
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#ifndef OPENSSL_NO_DSA
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if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA))
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{
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if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) ||
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BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) ||
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BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g))
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return(0);
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else
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return(1);
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}
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#endif
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#ifndef OPENSSL_NO_EC
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if (a->type == EVP_PKEY_EC && b->type == EVP_PKEY_EC)
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{
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if (EC_GROUP_cmp(a->pkey.eckey->group, b->pkey.eckey->group, NULL))
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return 0;
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else
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return 1;
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}
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#endif
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return(-1);
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}
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int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
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{
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if (a->type != b->type)
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return -1;
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if (EVP_PKEY_cmp_parameters(a, b) == 0)
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return 0;
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switch (a->type)
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{
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#ifndef OPENSSL_NO_RSA
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case EVP_PKEY_RSA:
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if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0
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|| BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0)
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return 0;
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break;
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#endif
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#ifndef OPENSSL_NO_DSA
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case EVP_PKEY_DSA:
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if (BN_cmp(b->pkey.dsa->pub_key,a->pkey.dsa->pub_key) != 0)
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return 0;
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break;
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#endif
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#ifndef OPENSSL_NO_EC
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case EVP_PKEY_EC:
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{
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int r = EC_POINT_cmp(b->pkey.eckey->group,
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b->pkey.eckey->pub_key,a->pkey.eckey->pub_key,NULL);
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if (r != 0)
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{
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if (r == 1)
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return 0;
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else
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return -2;
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}
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}
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break;
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#endif
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#ifndef OPENSSL_NO_DH
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case EVP_PKEY_DH:
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return -2;
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#endif
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default:
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return -2;
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}
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return 1;
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}
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EVP_PKEY *EVP_PKEY_new(void)
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{
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EVP_PKEY *ret;
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ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY));
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if (ret == NULL)
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{
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EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
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return(NULL);
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}
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ret->type=EVP_PKEY_NONE;
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ret->references=1;
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ret->pkey.ptr=NULL;
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ret->attributes=NULL;
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ret->save_parameters=1;
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return(ret);
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}
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int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key)
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{
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if (pkey == NULL) return(0);
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if (pkey->pkey.ptr != NULL)
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EVP_PKEY_free_it(pkey);
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pkey->type=EVP_PKEY_type(type);
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pkey->save_type=type;
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pkey->pkey.ptr=key;
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return(key != NULL);
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}
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#ifndef OPENSSL_NO_RSA
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int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
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{
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int ret = EVP_PKEY_assign_RSA(pkey, key);
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if(ret)
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RSA_up_ref(key);
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return ret;
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}
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RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
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{
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if(pkey->type != EVP_PKEY_RSA) {
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EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
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return NULL;
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}
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RSA_up_ref(pkey->pkey.rsa);
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return pkey->pkey.rsa;
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}
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#endif
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#ifndef OPENSSL_NO_DSA
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int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
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{
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int ret = EVP_PKEY_assign_DSA(pkey, key);
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if(ret)
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DSA_up_ref(key);
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return ret;
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}
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DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
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{
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if(pkey->type != EVP_PKEY_DSA) {
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EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY);
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return NULL;
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}
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DSA_up_ref(pkey->pkey.dsa);
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return pkey->pkey.dsa;
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}
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#endif
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#ifndef OPENSSL_NO_EC
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int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
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{
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int ret = EVP_PKEY_assign_EC_KEY(pkey,key);
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if (ret) CRYPTO_add(&key->references, 1, CRYPTO_LOCK_EC);
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return ret;
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}
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EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
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{
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if (pkey->type != EVP_PKEY_EC)
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{
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EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
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return NULL;
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}
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CRYPTO_add(&pkey->pkey.eckey->references, 1, CRYPTO_LOCK_EC);
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return pkey->pkey.eckey;
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}
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#endif
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#ifndef OPENSSL_NO_DH
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int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
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{
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int ret = EVP_PKEY_assign_DH(pkey, key);
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if(ret)
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DH_up_ref(key);
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return ret;
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}
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DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
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{
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if(pkey->type != EVP_PKEY_DH) {
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EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY);
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return NULL;
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}
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DH_up_ref(pkey->pkey.dh);
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return pkey->pkey.dh;
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}
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#endif
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int EVP_PKEY_type(int type)
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{
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switch (type)
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{
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case EVP_PKEY_RSA:
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case EVP_PKEY_RSA2:
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return(EVP_PKEY_RSA);
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case EVP_PKEY_DSA:
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case EVP_PKEY_DSA1:
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case EVP_PKEY_DSA2:
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case EVP_PKEY_DSA3:
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case EVP_PKEY_DSA4:
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return(EVP_PKEY_DSA);
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case EVP_PKEY_DH:
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return(EVP_PKEY_DH);
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case EVP_PKEY_EC:
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return(EVP_PKEY_EC);
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default:
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return(NID_undef);
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}
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}
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void EVP_PKEY_free(EVP_PKEY *x)
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{
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int i;
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if (x == NULL) return;
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i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
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#ifdef REF_PRINT
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REF_PRINT("EVP_PKEY",x);
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#endif
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if (i > 0) return;
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#ifdef REF_CHECK
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if (i < 0)
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{
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fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
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abort();
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}
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#endif
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EVP_PKEY_free_it(x);
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OPENSSL_free(x);
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}
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static void EVP_PKEY_free_it(EVP_PKEY *x)
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{
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switch (x->type)
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{
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#ifndef OPENSSL_NO_RSA
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case EVP_PKEY_RSA:
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case EVP_PKEY_RSA2:
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RSA_free(x->pkey.rsa);
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break;
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#endif
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#ifndef OPENSSL_NO_DSA
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case EVP_PKEY_DSA:
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case EVP_PKEY_DSA2:
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case EVP_PKEY_DSA3:
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case EVP_PKEY_DSA4:
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DSA_free(x->pkey.dsa);
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break;
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#endif
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#ifndef OPENSSL_NO_EC
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case EVP_PKEY_EC:
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EC_KEY_free(x->pkey.eckey);
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break;
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#endif
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#ifndef OPENSSL_NO_DH
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case EVP_PKEY_DH:
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DH_free(x->pkey.dh);
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break;
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#endif
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}
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}
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