+++ /dev/null
-/*
- * Copyright (c) 2000-2001,2011,2014 Apple Inc. All Rights Reserved.
- *
- * The contents of this file constitute Original Code as defined in and are
- * subject to the Apple Public Source License Version 1.2 (the 'License').
- * You may not use this file except in compliance with the License. Please obtain
- * a copy of the License at http://www.apple.com/publicsource and read it before
- * using this file.
- *
- * This Original Code and all software distributed under the License are
- * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
- * OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, INCLUDING WITHOUT
- * LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
- * PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. Please see the License for the
- * specific language governing rights and limitations under the License.
- */
-
-
-/* crypto/rsa/rsa_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 <openssl/crypto.h>
-#include "cryptlib.h"
-#include <openssl/lhash.h>
-#include <openssl/bn.h>
-#include <openssl/rsa.h>
-#include <pthread.h>
-
-const char *RSA_version="RSA" OPENSSL_VERSION_PTEXT;
-
-static const RSA_METHOD *default_RSA_meth=NULL;
-static int rsa_meth_num=0;
-static STACK_OF(CRYPTO_EX_DATA_FUNCS) *rsa_meth=NULL;
-
-RSA *RSA_new(void)
- {
- return(RSA_new_method(NULL));
- }
-
-void RSA_set_default_method(const RSA_METHOD *meth)
- {
- default_RSA_meth=meth;
- }
-
-const RSA_METHOD *RSA_get_default_method(void)
-{
- return default_RSA_meth;
-}
-
-const RSA_METHOD *RSA_get_method(RSA *rsa)
-{
- return rsa->meth;
-}
-
-const RSA_METHOD *RSA_set_method(RSA *rsa, const RSA_METHOD *meth)
-{
- const RSA_METHOD *mtmp;
- mtmp = rsa->meth;
- if (mtmp->finish) mtmp->finish(rsa);
- rsa->meth = meth;
- if (meth->init) meth->init(rsa);
- return mtmp;
-}
-
-RSA *RSA_new_method(const RSA_METHOD *meth)
- {
- RSA *ret;
-
- if (default_RSA_meth == NULL)
- {
-#ifdef RSA_NULL
- default_RSA_meth=RSA_null_method();
-#else
-#ifdef RSAref
- default_RSA_meth=RSA_PKCS1_RSAref();
-#else
- default_RSA_meth=RSA_PKCS1_SSLeay();
-#endif
-#endif
- }
- ret=(RSA *)Malloc(sizeof(RSA));
- if (ret == NULL)
- {
- RSAerr(RSA_F_RSA_NEW_METHOD,ERR_R_MALLOC_FAILURE);
- return(NULL);
- }
-
- if (meth == NULL)
- ret->meth=default_RSA_meth;
- else
- ret->meth=meth;
-
- ret->pad=0;
- ret->version=0;
- ret->n=NULL;
- ret->e=NULL;
- ret->d=NULL;
- ret->p=NULL;
- ret->q=NULL;
- ret->dmp1=NULL;
- ret->dmq1=NULL;
- ret->iqmp=NULL;
- ret->references=1;
- ret->_method_mod_n=NULL;
- ret->_method_mod_p=NULL;
- ret->_method_mod_q=NULL;
-
- // make blinding per thread
- ret->num_blinding_threads = 0;
- pthread_mutex_init(&ret->blinding_mutex, NULL);
- ret->blinding_array = NULL;
-
- ret->bignum_data=NULL;
- ret->flags=ret->meth->flags;
- if ((ret->meth->init != NULL) && !ret->meth->init(ret))
- {
- Free(ret);
- ret=NULL;
- }
- else
- CRYPTO_new_ex_data(rsa_meth,ret,&ret->ex_data);
- return(ret);
- }
-
-void RSA_free(RSA *r)
- {
- int i;
-
- if (r == NULL) return;
-
- i=CRYPTO_add(&r->references,-1,CRYPTO_LOCK_RSA);
-#ifdef REF_PRINT
- REF_PRINT("RSA",r);
-#endif
- if (i > 0) return;
-#ifdef REF_CHECK
- if (i < 0)
- {
- fprintf(stderr,"RSA_free, bad reference count\n");
- abort();
- }
-#endif
-
- CRYPTO_free_ex_data(rsa_meth,r,&r->ex_data);
-
- if (r->meth->finish != NULL)
- r->meth->finish(r);
-
- if (r->n != NULL) BN_clear_free(r->n);
- if (r->e != NULL) BN_clear_free(r->e);
- if (r->d != NULL) BN_clear_free(r->d);
- if (r->p != NULL) BN_clear_free(r->p);
- if (r->q != NULL) BN_clear_free(r->q);
- if (r->dmp1 != NULL) BN_clear_free(r->dmp1);
- if (r->dmq1 != NULL) BN_clear_free(r->dmq1);
- if (r->iqmp != NULL) BN_clear_free(r->iqmp);
- RSA_free_thread_blinding_ptr(r);
- if (r->bignum_data != NULL) Free_locked(r->bignum_data);
- Free(r);
- }
-
-int RSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
- CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func)
- {
- rsa_meth_num++;
- return(CRYPTO_get_ex_new_index(rsa_meth_num-1,
- &rsa_meth,argl,argp,new_func,dup_func,free_func));
- }
-
-int RSA_set_ex_data(RSA *r, int idx, void *arg)
- {
- return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
- }
-
-void *RSA_get_ex_data(RSA *r, int idx)
- {
- return(CRYPTO_get_ex_data(&r->ex_data,idx));
- }
-
-int RSA_size(RSA *r)
- {
- return(BN_num_bytes(r->n));
- }
-
-int RSA_public_encrypt(int flen, unsigned char *from, unsigned char *to,
- RSA *rsa, int padding)
- {
- return(rsa->meth->rsa_pub_enc(flen, from, to, rsa, padding));
- }
-
-int RSA_private_encrypt(int flen, unsigned char *from, unsigned char *to,
- RSA *rsa, int padding)
- {
- return(rsa->meth->rsa_priv_enc(flen, from, to, rsa, padding));
- }
-
-int RSA_private_decrypt(int flen, unsigned char *from, unsigned char *to,
- RSA *rsa, int padding)
- {
- return(rsa->meth->rsa_priv_dec(flen, from, to, rsa, padding));
- }
-
-int RSA_public_decrypt(int flen, unsigned char *from, unsigned char *to,
- RSA *rsa, int padding)
- {
- return(rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding));
- }
-
-int RSA_flags(RSA *r)
- {
- return((r == NULL)?0:r->meth->flags);
- }
-
-void RSA_blinding_off(RSA *rsa)
- {
- RSA_free_thread_blinding_ptr(rsa);
- rsa->flags&= ~RSA_FLAG_BLINDING;
- }
-
-int RSA_blinding_on(RSA *rsa, BN_CTX *p_ctx)
- {
- BIGNUM *A,*Ai;
- BN_CTX *ctx;
- int ret=0;
-
- if (p_ctx == NULL)
- {
- if ((ctx=BN_CTX_new()) == NULL) goto err;
- }
- else
- ctx=p_ctx;
-
- RSA_free_thread_blinding_ptr(rsa);
-
- BN_CTX_start(ctx);
- A = BN_CTX_get(ctx);
- if (!BN_rand(A,BN_num_bits(rsa->n)-1,1,0)) goto err;
- if ((Ai=BN_mod_inverse(NULL,A,rsa->n,ctx)) == NULL) goto err;
-
- if (!rsa->meth->bn_mod_exp(A,A,rsa->e,rsa->n,ctx,rsa->_method_mod_n))
- goto err;
- RSA_set_thread_blinding_ptr(rsa, BN_BLINDING_new(A,Ai,rsa->n));
- rsa->flags|=RSA_FLAG_BLINDING;
- BN_free(Ai);
- ret=1;
-err:
- BN_CTX_end(ctx);
- if (ctx != p_ctx) BN_CTX_free(ctx);
- return(ret);
- }
-
-int RSA_memory_lock(RSA *r)
- {
- int i,j,k,off;
- char *p;
- BIGNUM *bn,**t[6],*b;
- BN_ULONG *ul;
-
- if (r->d == NULL) return(1);
- t[0]= &r->d;
- t[1]= &r->p;
- t[2]= &r->q;
- t[3]= &r->dmp1;
- t[4]= &r->dmq1;
- t[5]= &r->iqmp;
- k=sizeof(BIGNUM)*6;
- off=k/sizeof(BN_ULONG)+1;
- j=1;
- for (i=0; i<6; i++)
- j+= (*t[i])->top;
- if ((p=Malloc_locked((off+j)*sizeof(BN_ULONG))) == NULL)
- {
- RSAerr(RSA_F_MEMORY_LOCK,ERR_R_MALLOC_FAILURE);
- return(0);
- }
- bn=(BIGNUM *)p;
- ul=(BN_ULONG *)&(p[off]);
- for (i=0; i<6; i++)
- {
- b= *(t[i]);
- *(t[i])= &(bn[i]);
- memcpy((char *)&(bn[i]),(char *)b,sizeof(BIGNUM));
- bn[i].flags=BN_FLG_STATIC_DATA;
- bn[i].d=ul;
- memcpy((char *)ul,b->d,sizeof(BN_ULONG)*b->top);
- ul+=b->top;
- BN_clear_free(b);
- }
-
- /* I should fix this so it can still be done */
- r->flags&= ~(RSA_FLAG_CACHE_PRIVATE|RSA_FLAG_CACHE_PUBLIC);
-
- r->bignum_data=p;
- return(1);
- }
-
-struct BN_BLINDING_STRUCT
-{
- pthread_t thread_ID;
- BN_BLINDING* blinding;
-};
-
-
-
-static struct BN_BLINDING_STRUCT* RSA_get_blinding_struct(RSA *r)
-{
- // look for storage for the current thread
- pthread_t current = pthread_self();
-
- int i;
- for (i = 0; i < r->num_blinding_threads; ++i)
- {
- if (pthread_equal(current, r->blinding_array[i].thread_ID)) // do we have storage for this thread?
- {
- return &(r->blinding_array[i]);
- break;
- }
- }
-
- return NULL;
-}
-
-typedef struct BN_BLINDING_STRUCT BN_BLINDING_STRUCT;
-
-
-BN_BLINDING* RSA_get_thread_blinding_ptr(RSA *r)
-{
- // lock down the structure
- pthread_mutex_lock(&r->blinding_mutex);
-
- BN_BLINDING* result = NULL;
- BN_BLINDING_STRUCT *st = RSA_get_blinding_struct(r);
- if (st != NULL)
- {
- result = st->blinding;
- }
-
- pthread_mutex_unlock(&r->blinding_mutex);
-
- return result;
-}
-
-
-
-void RSA_set_thread_blinding_ptr(RSA *r, BN_BLINDING* bnb)
-{
- // lock down the structure
- pthread_mutex_lock(&r->blinding_mutex);
-
- // see if there is an existing record for this thread
- BN_BLINDING_STRUCT *st = RSA_get_blinding_struct(r);
- if (st == NULL)
- {
- // add a new blinding struct
- int last_member = r->num_blinding_threads;
- r->num_blinding_threads += 1;
- r->blinding_array = (BN_BLINDING_STRUCT*) realloc(r->blinding_array, sizeof(BN_BLINDING_STRUCT) * r->num_blinding_threads);
- st = &r->blinding_array[last_member];
- }
-
- st->thread_ID = pthread_self();
- st->blinding = bnb;
-
- pthread_mutex_unlock(&r->blinding_mutex);
-}
-
-
-
-void RSA_free_thread_blinding_ptr(RSA *r)
-{
- // look for storage for the current thread
- pthread_t current = pthread_self();
-
- int i;
- for (i = 0; i < r->num_blinding_threads; ++i)
- {
- if (pthread_equal(current, r->blinding_array[i].thread_ID)) // do we have storage for this thread?
- {
- BN_BLINDING_free(r->blinding_array[i].blinding);
-
- int new_count = r->num_blinding_threads - 1;
- if (new_count == 0)
- {
- // no more thread storage, just blow our array away
- free(r->blinding_array);
- r->blinding_array = NULL;
- r->num_blinding_threads = 0;
- }
- else
- {
- r->blinding_array[i] = r->blinding_array[new_count];
- r->num_blinding_threads = new_count;
- }
- break;
- }
- }
-}
projects / apple / security.git / blobdiff