p_lib.c
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上传日期:2020-08-09
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- /* crypto/evp/p_lib.c */
- /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- *
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to. The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code. The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- *
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * "This product includes cryptographic software written by
- * Eric Young (eay@cryptsoft.com)"
- * The word 'cryptographic' can be left out if the rouines from the library
- * being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from
- * the apps directory (application code) you must include an acknowledgement:
- * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- *
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed. i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
- #include <stdio.h>
- #include "cryptlib.h"
- #include <openssl/bn.h>
- #include <openssl/err.h>
- #include <openssl/objects.h>
- #include <openssl/evp.h>
- #include <openssl/asn1_mac.h>
- #include <openssl/x509.h>
- #ifndef OPENSSL_NO_RSA
- #include <openssl/rsa.h>
- #endif
- #ifndef OPENSSL_NO_DSA
- #include <openssl/dsa.h>
- #endif
- #ifndef OPENSSL_NO_DH
- #include <openssl/dh.h>
- #endif
- static void EVP_PKEY_free_it(EVP_PKEY *x);
- int EVP_PKEY_bits(EVP_PKEY *pkey)
- {
- if (0)
- return 0;
- #ifndef OPENSSL_NO_RSA
- else if (pkey->type == EVP_PKEY_RSA)
- return(BN_num_bits(pkey->pkey.rsa->n));
- #endif
- #ifndef OPENSSL_NO_DSA
- else if (pkey->type == EVP_PKEY_DSA)
- return(BN_num_bits(pkey->pkey.dsa->p));
- #endif
- #ifndef OPENSSL_NO_EC
- else if (pkey->type == EVP_PKEY_EC)
- {
- BIGNUM *order = BN_new();
- const EC_GROUP *group;
- int ret;
- if (!order)
- {
- ERR_clear_error();
- return 0;
- }
- group = EC_KEY_get0_group(pkey->pkey.ec);
- if (!EC_GROUP_get_order(group, order, NULL))
- {
- ERR_clear_error();
- return 0;
- }
- ret = BN_num_bits(order);
- BN_free(order);
- return ret;
- }
- #endif
- return(0);
- }
- int EVP_PKEY_size(EVP_PKEY *pkey)
- {
- if (pkey == NULL)
- return(0);
- #ifndef OPENSSL_NO_RSA
- if (pkey->type == EVP_PKEY_RSA)
- return(RSA_size(pkey->pkey.rsa));
- else
- #endif
- #ifndef OPENSSL_NO_DSA
- if (pkey->type == EVP_PKEY_DSA)
- return(DSA_size(pkey->pkey.dsa));
- #endif
- #ifndef OPENSSL_NO_ECDSA
- if (pkey->type == EVP_PKEY_EC)
- return(ECDSA_size(pkey->pkey.ec));
- #endif
- return(0);
- }
- int EVP_PKEY_save_parameters(EVP_PKEY *pkey, int mode)
- {
- #ifndef OPENSSL_NO_DSA
- if (pkey->type == EVP_PKEY_DSA)
- {
- int ret=pkey->save_parameters;
- if (mode >= 0)
- pkey->save_parameters=mode;
- return(ret);
- }
- #endif
- #ifndef OPENSSL_NO_EC
- if (pkey->type == EVP_PKEY_EC)
- {
- int ret = pkey->save_parameters;
- if (mode >= 0)
- pkey->save_parameters = mode;
- return(ret);
- }
- #endif
- return(0);
- }
- int EVP_PKEY_copy_parameters(EVP_PKEY *to, const EVP_PKEY *from)
- {
- if (to->type != from->type)
- {
- EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_DIFFERENT_KEY_TYPES);
- goto err;
- }
- if (EVP_PKEY_missing_parameters(from))
- {
- EVPerr(EVP_F_EVP_PKEY_COPY_PARAMETERS,EVP_R_MISSING_PARAMETERS);
- goto err;
- }
- #ifndef OPENSSL_NO_DSA
- if (to->type == EVP_PKEY_DSA)
- {
- BIGNUM *a;
- if ((a=BN_dup(from->pkey.dsa->p)) == NULL) goto err;
- if (to->pkey.dsa->p != NULL) BN_free(to->pkey.dsa->p);
- to->pkey.dsa->p=a;
- if ((a=BN_dup(from->pkey.dsa->q)) == NULL) goto err;
- if (to->pkey.dsa->q != NULL) BN_free(to->pkey.dsa->q);
- to->pkey.dsa->q=a;
- if ((a=BN_dup(from->pkey.dsa->g)) == NULL) goto err;
- if (to->pkey.dsa->g != NULL) BN_free(to->pkey.dsa->g);
- to->pkey.dsa->g=a;
- }
- #endif
- #ifndef OPENSSL_NO_EC
- if (to->type == EVP_PKEY_EC)
- {
- EC_GROUP *group = EC_GROUP_dup(EC_KEY_get0_group(from->pkey.ec));
- if (group == NULL)
- goto err;
- if (EC_KEY_set_group(to->pkey.ec, group) == 0)
- goto err;
- EC_GROUP_free(group);
- }
- #endif
- return(1);
- err:
- return(0);
- }
- int EVP_PKEY_missing_parameters(const EVP_PKEY *pkey)
- {
- #ifndef OPENSSL_NO_DSA
- if (pkey->type == EVP_PKEY_DSA)
- {
- DSA *dsa;
- dsa=pkey->pkey.dsa;
- if ((dsa->p == NULL) || (dsa->q == NULL) || (dsa->g == NULL))
- return(1);
- }
- #endif
- #ifndef OPENSSL_NO_EC
- if (pkey->type == EVP_PKEY_EC)
- {
- if (EC_KEY_get0_group(pkey->pkey.ec) == NULL)
- return(1);
- }
- #endif
- return(0);
- }
- int EVP_PKEY_cmp_parameters(const EVP_PKEY *a, const EVP_PKEY *b)
- {
- #ifndef OPENSSL_NO_DSA
- if ((a->type == EVP_PKEY_DSA) && (b->type == EVP_PKEY_DSA))
- {
- if ( BN_cmp(a->pkey.dsa->p,b->pkey.dsa->p) ||
- BN_cmp(a->pkey.dsa->q,b->pkey.dsa->q) ||
- BN_cmp(a->pkey.dsa->g,b->pkey.dsa->g))
- return(0);
- else
- return(1);
- }
- #endif
- #ifndef OPENSSL_NO_EC
- if (a->type == EVP_PKEY_EC && b->type == EVP_PKEY_EC)
- {
- const EC_GROUP *group_a = EC_KEY_get0_group(a->pkey.ec),
- *group_b = EC_KEY_get0_group(b->pkey.ec);
- if (EC_GROUP_cmp(group_a, group_b, NULL))
- return 0;
- else
- return 1;
- }
- #endif
- return(-1);
- }
- int EVP_PKEY_cmp(const EVP_PKEY *a, const EVP_PKEY *b)
- {
- if (a->type != b->type)
- return -1;
- if (EVP_PKEY_cmp_parameters(a, b) == 0)
- return 0;
- switch (a->type)
- {
- #ifndef OPENSSL_NO_RSA
- case EVP_PKEY_RSA:
- if (BN_cmp(b->pkey.rsa->n,a->pkey.rsa->n) != 0
- || BN_cmp(b->pkey.rsa->e,a->pkey.rsa->e) != 0)
- return 0;
- break;
- #endif
- #ifndef OPENSSL_NO_DSA
- case EVP_PKEY_DSA:
- if (BN_cmp(b->pkey.dsa->pub_key,a->pkey.dsa->pub_key) != 0)
- return 0;
- break;
- #endif
- #ifndef OPENSSL_NO_EC
- case EVP_PKEY_EC:
- {
- int r;
- const EC_GROUP *group = EC_KEY_get0_group(b->pkey.ec);
- const EC_POINT *pa = EC_KEY_get0_public_key(a->pkey.ec),
- *pb = EC_KEY_get0_public_key(b->pkey.ec);
- r = EC_POINT_cmp(group, pa, pb, NULL);
- if (r != 0)
- {
- if (r == 1)
- return 0;
- else
- return -2;
- }
- }
- break;
- #endif
- #ifndef OPENSSL_NO_DH
- case EVP_PKEY_DH:
- return -2;
- #endif
- default:
- return -2;
- }
- return 1;
- }
- EVP_PKEY *EVP_PKEY_new(void)
- {
- EVP_PKEY *ret;
- ret=(EVP_PKEY *)OPENSSL_malloc(sizeof(EVP_PKEY));
- if (ret == NULL)
- {
- EVPerr(EVP_F_EVP_PKEY_NEW,ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
- ret->type=EVP_PKEY_NONE;
- ret->references=1;
- ret->pkey.ptr=NULL;
- ret->attributes=NULL;
- ret->save_parameters=1;
- return(ret);
- }
- int EVP_PKEY_assign(EVP_PKEY *pkey, int type, char *key)
- {
- if (pkey == NULL) return(0);
- if (pkey->pkey.ptr != NULL)
- EVP_PKEY_free_it(pkey);
- pkey->type=EVP_PKEY_type(type);
- pkey->save_type=type;
- pkey->pkey.ptr=key;
- return(key != NULL);
- }
- #ifndef OPENSSL_NO_RSA
- int EVP_PKEY_set1_RSA(EVP_PKEY *pkey, RSA *key)
- {
- int ret = EVP_PKEY_assign_RSA(pkey, key);
- if(ret)
- RSA_up_ref(key);
- return ret;
- }
- RSA *EVP_PKEY_get1_RSA(EVP_PKEY *pkey)
- {
- if(pkey->type != EVP_PKEY_RSA) {
- EVPerr(EVP_F_EVP_PKEY_GET1_RSA, EVP_R_EXPECTING_AN_RSA_KEY);
- return NULL;
- }
- RSA_up_ref(pkey->pkey.rsa);
- return pkey->pkey.rsa;
- }
- #endif
- #ifndef OPENSSL_NO_DSA
- int EVP_PKEY_set1_DSA(EVP_PKEY *pkey, DSA *key)
- {
- int ret = EVP_PKEY_assign_DSA(pkey, key);
- if(ret)
- DSA_up_ref(key);
- return ret;
- }
- DSA *EVP_PKEY_get1_DSA(EVP_PKEY *pkey)
- {
- if(pkey->type != EVP_PKEY_DSA) {
- EVPerr(EVP_F_EVP_PKEY_GET1_DSA, EVP_R_EXPECTING_A_DSA_KEY);
- return NULL;
- }
- DSA_up_ref(pkey->pkey.dsa);
- return pkey->pkey.dsa;
- }
- #endif
- #ifndef OPENSSL_NO_EC
- int EVP_PKEY_set1_EC_KEY(EVP_PKEY *pkey, EC_KEY *key)
- {
- int ret = EVP_PKEY_assign_EC_KEY(pkey,key);
- if (ret)
- EC_KEY_up_ref(key);
- return ret;
- }
- EC_KEY *EVP_PKEY_get1_EC_KEY(EVP_PKEY *pkey)
- {
- if (pkey->type != EVP_PKEY_EC)
- {
- EVPerr(EVP_F_EVP_PKEY_GET1_EC_KEY, EVP_R_EXPECTING_A_EC_KEY);
- return NULL;
- }
- EC_KEY_up_ref(pkey->pkey.ec);
- return pkey->pkey.ec;
- }
- #endif
- #ifndef OPENSSL_NO_DH
- int EVP_PKEY_set1_DH(EVP_PKEY *pkey, DH *key)
- {
- int ret = EVP_PKEY_assign_DH(pkey, key);
- if(ret)
- DH_up_ref(key);
- return ret;
- }
- DH *EVP_PKEY_get1_DH(EVP_PKEY *pkey)
- {
- if(pkey->type != EVP_PKEY_DH) {
- EVPerr(EVP_F_EVP_PKEY_GET1_DH, EVP_R_EXPECTING_A_DH_KEY);
- return NULL;
- }
- DH_up_ref(pkey->pkey.dh);
- return pkey->pkey.dh;
- }
- #endif
- int EVP_PKEY_type(int type)
- {
- switch (type)
- {
- case EVP_PKEY_RSA:
- case EVP_PKEY_RSA2:
- return(EVP_PKEY_RSA);
- case EVP_PKEY_DSA:
- case EVP_PKEY_DSA1:
- case EVP_PKEY_DSA2:
- case EVP_PKEY_DSA3:
- case EVP_PKEY_DSA4:
- return(EVP_PKEY_DSA);
- case EVP_PKEY_DH:
- return(EVP_PKEY_DH);
- case EVP_PKEY_EC:
- return(EVP_PKEY_EC);
- default:
- return(NID_undef);
- }
- }
- 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 countn");
- 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)
- {
- switch (x->type)
- {
- #ifndef OPENSSL_NO_RSA
- case EVP_PKEY_RSA:
- case EVP_PKEY_RSA2:
- RSA_free(x->pkey.rsa);
- break;
- #endif
- #ifndef OPENSSL_NO_DSA
- case EVP_PKEY_DSA:
- case EVP_PKEY_DSA2:
- case EVP_PKEY_DSA3:
- case EVP_PKEY_DSA4:
- DSA_free(x->pkey.dsa);
- break;
- #endif
- #ifndef OPENSSL_NO_EC
- case EVP_PKEY_EC:
- EC_KEY_free(x->pkey.ec);
- break;
- #endif
- #ifndef OPENSSL_NO_DH
- case EVP_PKEY_DH:
- DH_free(x->pkey.dh);
- break;
- #endif
- }
- }