470 lines
11 KiB
C
470 lines
11 KiB
C
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/* 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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#ifndef OPENSSL_NO_RSA
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#include <openssl/rsa.h>
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#endif
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#ifndef OPENSSL_NO_DSA
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#include <openssl/dsa.h>
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#endif
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#ifndef OPENSSL_NO_DH
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#include <openssl/dh.h>
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#endif
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#ifndef OPENSSL_NO_ENGINE
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#include <openssl/engine.h>
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#endif
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#include "asn1_locl.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 (pkey && pkey->ameth && pkey->ameth->pkey_bits)
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return pkey->ameth->pkey_bits(pkey);
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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 && pkey->ameth && pkey->ameth->pkey_size)
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return pkey->ameth->pkey_size(pkey);
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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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if (from->ameth && from->ameth->param_copy)
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return from->ameth->param_copy(to, from);
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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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if (pkey->ameth && pkey->ameth->param_missing)
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return pkey->ameth->param_missing(pkey);
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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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if (a->type != b->type)
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return -1;
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if (a->ameth && a->ameth->param_cmp)
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return a->ameth->param_cmp(a, b);
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return -2;
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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 (a->ameth)
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{
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int ret;
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/* Compare parameters if the algorithm has them */
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if (a->ameth->param_cmp)
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{
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ret = a->ameth->param_cmp(a, b);
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if (ret <= 0)
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return ret;
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}
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if (a->ameth->pub_cmp)
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return a->ameth->pub_cmp(a, b);
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}
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return -2;
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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->save_type=EVP_PKEY_NONE;
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ret->references=1;
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ret->ameth=NULL;
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ret->engine=NULL;
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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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/* Setup a public key ASN1 method and ENGINE from a NID or a string.
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* If pkey is NULL just return 1 or 0 if the algorithm exists.
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*/
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static int pkey_set_type(EVP_PKEY *pkey, int type, const char *str, int len)
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{
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const EVP_PKEY_ASN1_METHOD *ameth;
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ENGINE *e = NULL;
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if (pkey)
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{
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if (pkey->pkey.ptr)
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EVP_PKEY_free_it(pkey);
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/* If key type matches and a method exists then this
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* lookup has succeeded once so just indicate success.
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*/
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if ((type == pkey->save_type) && pkey->ameth)
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return 1;
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#ifndef OPENSSL_NO_ENGINE
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/* If we have an ENGINE release it */
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if (pkey->engine)
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{
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ENGINE_finish(pkey->engine);
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pkey->engine = NULL;
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}
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#endif
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}
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if (str)
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ameth = EVP_PKEY_asn1_find_str(&e, str, len);
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else
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ameth = EVP_PKEY_asn1_find(&e, type);
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#ifndef OPENSSL_NO_ENGINE
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if (!pkey && e)
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ENGINE_finish(e);
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#endif
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if (!ameth)
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{
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EVPerr(EVP_F_PKEY_SET_TYPE, EVP_R_UNSUPPORTED_ALGORITHM);
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return 0;
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}
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if (pkey)
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{
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pkey->ameth = ameth;
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pkey->engine = e;
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pkey->type = pkey->ameth->pkey_id;
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pkey->save_type=type;
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}
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return 1;
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}
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int EVP_PKEY_set_type(EVP_PKEY *pkey, int type)
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{
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return pkey_set_type(pkey, type, NULL, -1);
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}
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int EVP_PKEY_set_type_str(EVP_PKEY *pkey, const char *str, int len)
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{
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return pkey_set_type(pkey, EVP_PKEY_NONE, str, len);
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}
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int EVP_PKEY_assign(EVP_PKEY *pkey, int type, void *key)
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{
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if (!EVP_PKEY_set_type(pkey, type))
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return 0;
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pkey->pkey.ptr=key;
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return (key != NULL);
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}
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void *EVP_PKEY_get0(EVP_PKEY *pkey)
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{
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return pkey->pkey.ptr;
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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)
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EC_KEY_up_ref(key);
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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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EC_KEY_up_ref(pkey->pkey.ec);
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return pkey->pkey.ec;
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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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int ret;
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const EVP_PKEY_ASN1_METHOD *ameth;
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ENGINE *e;
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ameth = EVP_PKEY_asn1_find(&e, type);
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if (ameth)
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ret = ameth->pkey_id;
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else
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ret = NID_undef;
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#ifndef OPENSSL_NO_ENGINE
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|
if (e)
|
||
|
|
ENGINE_finish(e);
|
||
|
|
#endif
|
||
|
|
return ret;
|
||
|
|
}
|
||
|
|
|
||
|
|
int EVP_PKEY_id(const EVP_PKEY *pkey)
|
||
|
|
{
|
||
|
|
return pkey->type;
|
||
|
|
}
|
||
|
|
|
||
|
|
int EVP_PKEY_base_id(const EVP_PKEY *pkey)
|
||
|
|
{
|
||
|
|
return EVP_PKEY_type(pkey->type);
|
||
|
|
}
|
||
|
|
|
||
|
|
void EVP_PKEY_free(EVP_PKEY *x)
|
||
|
|
{
|
||
|
|
int i;
|
||
|
|
|
||
|
|
if (x == NULL) return;
|
||
|
|
|
||
|
|
i=CRYPTO_add(&x->references,-1,CRYPTO_LOCK_EVP_PKEY);
|
||
|
|
#ifdef REF_PRINT
|
||
|
|
REF_PRINT("EVP_PKEY",x);
|
||
|
|
#endif
|
||
|
|
if (i > 0) return;
|
||
|
|
#ifdef REF_CHECK
|
||
|
|
if (i < 0)
|
||
|
|
{
|
||
|
|
fprintf(stderr,"EVP_PKEY_free, bad reference count\n");
|
||
|
|
abort();
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
EVP_PKEY_free_it(x);
|
||
|
|
if (x->attributes)
|
||
|
|
sk_X509_ATTRIBUTE_pop_free(x->attributes, X509_ATTRIBUTE_free);
|
||
|
|
OPENSSL_free(x);
|
||
|
|
}
|
||
|
|
|
||
|
|
static void EVP_PKEY_free_it(EVP_PKEY *x)
|
||
|
|
{
|
||
|
|
if (x->ameth && x->ameth->pkey_free)
|
||
|
|
{
|
||
|
|
x->ameth->pkey_free(x);
|
||
|
|
x->pkey.ptr = NULL;
|
||
|
|
}
|
||
|
|
#ifndef OPENSSL_NO_ENGINE
|
||
|
|
if (x->engine)
|
||
|
|
{
|
||
|
|
ENGINE_finish(x->engine);
|
||
|
|
x->engine = NULL;
|
||
|
|
}
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
|
||
|
|
static int unsup_alg(BIO *out, const EVP_PKEY *pkey, int indent,
|
||
|
|
const char *kstr)
|
||
|
|
{
|
||
|
|
BIO_indent(out, indent, 128);
|
||
|
|
BIO_printf(out, "%s algorithm \"%s\" unsupported\n",
|
||
|
|
kstr, OBJ_nid2ln(pkey->type));
|
||
|
|
return 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
int EVP_PKEY_print_public(BIO *out, const EVP_PKEY *pkey,
|
||
|
|
int indent, ASN1_PCTX *pctx)
|
||
|
|
{
|
||
|
|
if (pkey->ameth && pkey->ameth->pub_print)
|
||
|
|
return pkey->ameth->pub_print(out, pkey, indent, pctx);
|
||
|
|
|
||
|
|
return unsup_alg(out, pkey, indent, "Public Key");
|
||
|
|
}
|
||
|
|
|
||
|
|
int EVP_PKEY_print_private(BIO *out, const EVP_PKEY *pkey,
|
||
|
|
int indent, ASN1_PCTX *pctx)
|
||
|
|
{
|
||
|
|
if (pkey->ameth && pkey->ameth->priv_print)
|
||
|
|
return pkey->ameth->priv_print(out, pkey, indent, pctx);
|
||
|
|
|
||
|
|
return unsup_alg(out, pkey, indent, "Private Key");
|
||
|
|
}
|
||
|
|
|
||
|
|
int EVP_PKEY_print_params(BIO *out, const EVP_PKEY *pkey,
|
||
|
|
int indent, ASN1_PCTX *pctx)
|
||
|
|
{
|
||
|
|
if (pkey->ameth && pkey->ameth->param_print)
|
||
|
|
return pkey->ameth->param_print(out, pkey, indent, pctx);
|
||
|
|
return unsup_alg(out, pkey, indent, "Parameters");
|
||
|
|
}
|
||
|
|
|
||
|
|
int EVP_PKEY_get_default_digest_nid(EVP_PKEY *pkey, int *pnid)
|
||
|
|
{
|
||
|
|
if (!pkey->ameth || !pkey->ameth->pkey_ctrl)
|
||
|
|
return -2;
|
||
|
|
return pkey->ameth->pkey_ctrl(pkey, ASN1_PKEY_CTRL_DEFAULT_MD_NID,
|
||
|
|
0, pnid);
|
||
|
|
}
|
||
|
|
|