-/* crypto/rsa/rsa_lib.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
+/*
+ * Copyright 1995-2017 The OpenSSL Project Authors. 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.]
+ * Licensed under the OpenSSL license (the "License"). You may not use
+ * this file except in compliance with the License. You can obtain a copy
+ * in the file LICENSE in the source distribution or at
+ * https://www.openssl.org/source/license.html
*/
#include <stdio.h>
-#include "crypto.h"
-#include "cryptlib.h"
-#include "lhash.h"
-#include "bn.h"
-#include "rsa.h"
-
-char *RSA_version="RSA part of OpenSSL 0.9.1c 23-Dec-1998";
-
-static RSA_METHOD *default_RSA_meth=NULL;
-static int rsa_meth_num=0;
-static STACK *rsa_meth=NULL;
-
-RSA *RSA_new()
- {
- return(RSA_new_method(NULL));
- }
-
-void RSA_set_default_method(meth)
-RSA_METHOD *meth;
- {
- default_RSA_meth=meth;
- }
-
-RSA *RSA_new_method(meth)
-RSA_METHOD *meth;
- {
- RSA *ret;
-
- if (default_RSA_meth == NULL)
- {
-#ifdef RSAref
- default_RSA_meth=RSA_PKCS1_RSAref();
-#else
- default_RSA_meth=RSA_PKCS1_SSLeay();
+#include <openssl/crypto.h>
+#include "internal/cryptlib.h"
+#include <openssl/lhash.h>
+#include "internal/bn_int.h"
+#include <openssl/engine.h>
+#include <openssl/evp.h>
+#include "internal/evp_int.h"
+#include "rsa_locl.h"
+
+RSA *RSA_new(void)
+{
+ return RSA_new_method(NULL);
+}
+
+const RSA_METHOD *RSA_get_method(const RSA *rsa)
+{
+ return rsa->meth;
+}
+
+int RSA_set_method(RSA *rsa, const RSA_METHOD *meth)
+{
+ /*
+ * NB: The caller is specifically setting a method, so it's not up to us
+ * to deal with which ENGINE it comes from.
+ */
+ const RSA_METHOD *mtmp;
+ mtmp = rsa->meth;
+ if (mtmp->finish)
+ mtmp->finish(rsa);
+#ifndef OPENSSL_NO_ENGINE
+ ENGINE_finish(rsa->engine);
+ rsa->engine = NULL;
#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;
- ret->blinding=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,(char *)ret,&ret->ex_data);
- return(ret);
- }
-
-void RSA_free(r)
-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();
- }
+ rsa->meth = meth;
+ if (meth->init)
+ meth->init(rsa);
+ return 1;
+}
+
+RSA *RSA_new_method(ENGINE *engine)
+{
+ RSA *ret = OPENSSL_zalloc(sizeof(*ret));
+
+ if (ret == NULL) {
+ RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+ return NULL;
+ }
+
+ ret->references = 1;
+ ret->lock = CRYPTO_THREAD_lock_new();
+ if (ret->lock == NULL) {
+ RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+ OPENSSL_free(ret);
+ return NULL;
+ }
+
+ ret->meth = RSA_get_default_method();
+#ifndef OPENSSL_NO_ENGINE
+ ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
+ if (engine) {
+ if (!ENGINE_init(engine)) {
+ RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
+ goto err;
+ }
+ ret->engine = engine;
+ } else
+ ret->engine = ENGINE_get_default_RSA();
+ if (ret->engine) {
+ ret->meth = ENGINE_get_RSA(ret->engine);
+ if (ret->meth == NULL) {
+ RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
+ goto err;
+ }
+ }
#endif
- CRYPTO_free_ex_data(rsa_meth,(char *)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);
- if (r->blinding != NULL) BN_BLINDING_free(r->blinding);
- if (r->bignum_data != NULL) Free_locked(r->bignum_data);
- Free(r);
- }
-
-int RSA_get_ex_new_index(argl,argp,new_func,dup_func,free_func)
-long argl;
-char *argp;
-int (*new_func)();
-int (*dup_func)();
-void (*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));
- }
+ ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
+ if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) {
+ goto err;
+ }
+
+ if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
+ RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_INIT_FAIL);
+ goto err;
+ }
+
+ return ret;
-int RSA_set_ex_data(r,idx,arg)
-RSA *r;
-int idx;
-char *arg;
- {
- return(CRYPTO_set_ex_data(&r->ex_data,idx,arg));
- }
-
-char *RSA_get_ex_data(r,idx)
-RSA *r;
-int idx;
- {
- return(CRYPTO_get_ex_data(&r->ex_data,idx));
- }
-
-int RSA_size(r)
-RSA *r;
- {
- return(BN_num_bytes(r->n));
- }
-
-int RSA_public_encrypt(flen, from, to, rsa, padding)
-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(flen, from, to, rsa, padding)
-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(flen, from, to, rsa, padding)
-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(flen, from, to, rsa, padding)
-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(r)
-RSA *r;
- {
- return((r == NULL)?0:r->meth->flags);
- }
-
-void RSA_blinding_off(rsa)
-RSA *rsa;
- {
- if (rsa->blinding != NULL)
- {
- BN_BLINDING_free(rsa->blinding);
- rsa->blinding=NULL;
- }
- rsa->flags&= ~RSA_FLAG_BLINDING;
- }
-
-int RSA_blinding_on(rsa,p_ctx)
-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;
-
- if (rsa->blinding != NULL)
- BN_BLINDING_free(rsa->blinding);
-
- A= &(ctx->bn[0]);
- ctx->tos++;
- 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->blinding=BN_BLINDING_new(A,Ai,rsa->n);
- ctx->tos--;
- rsa->flags|=RSA_FLAG_BLINDING;
- BN_free(Ai);
- ret=1;
err:
- if (ctx != p_ctx) BN_CTX_free(ctx);
- return(ret);
- }
-
-int RSA_memory_lock(r)
-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);
- }
+ RSA_free(ret);
+ return NULL;
+}
+
+void RSA_free(RSA *r)
+{
+ int i;
+
+ if (r == NULL)
+ return;
+
+ CRYPTO_DOWN_REF(&r->references, &i, r->lock);
+ REF_PRINT_COUNT("RSA", r);
+ if (i > 0)
+ return;
+ REF_ASSERT_ISNT(i < 0);
+
+ if (r->meth->finish)
+ r->meth->finish(r);
+#ifndef OPENSSL_NO_ENGINE
+ ENGINE_finish(r->engine);
+#endif
+ CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data);
+
+ CRYPTO_THREAD_lock_free(r->lock);
+
+ BN_clear_free(r->n);
+ BN_clear_free(r->e);
+ BN_clear_free(r->d);
+ BN_clear_free(r->p);
+ BN_clear_free(r->q);
+ BN_clear_free(r->dmp1);
+ BN_clear_free(r->dmq1);
+ BN_clear_free(r->iqmp);
+ RSA_PSS_PARAMS_free(r->pss);
+ BN_BLINDING_free(r->blinding);
+ BN_BLINDING_free(r->mt_blinding);
+ OPENSSL_free(r->bignum_data);
+ OPENSSL_free(r);
+}
+
+int RSA_up_ref(RSA *r)
+{
+ int i;
+
+ if (CRYPTO_UP_REF(&r->references, &i, r->lock) <= 0)
+ return 0;
+
+ REF_PRINT_COUNT("RSA", r);
+ REF_ASSERT_ISNT(i < 2);
+ return i > 1 ? 1 : 0;
+}
+
+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(const RSA *r, int idx)
+{
+ return CRYPTO_get_ex_data(&r->ex_data, idx);
+}
+
+int RSA_security_bits(const RSA *rsa)
+{
+ return BN_security_bits(BN_num_bits(rsa->n), -1);
+}
+
+int RSA_set0_key(RSA *r, BIGNUM *n, BIGNUM *e, BIGNUM *d)
+{
+ /* If the fields n and e in r are NULL, the corresponding input
+ * parameters MUST be non-NULL for n and e. d may be
+ * left NULL (in case only the public key is used).
+ */
+ if ((r->n == NULL && n == NULL)
+ || (r->e == NULL && e == NULL))
+ return 0;
+
+ if (n != NULL) {
+ BN_free(r->n);
+ r->n = n;
+ }
+ if (e != NULL) {
+ BN_free(r->e);
+ r->e = e;
+ }
+ if (d != NULL) {
+ BN_free(r->d);
+ r->d = d;
+ }
+
+ return 1;
+}
+
+int RSA_set0_factors(RSA *r, BIGNUM *p, BIGNUM *q)
+{
+ /* If the fields p and q in r are NULL, the corresponding input
+ * parameters MUST be non-NULL.
+ */
+ if ((r->p == NULL && p == NULL)
+ || (r->q == NULL && q == NULL))
+ return 0;
+
+ if (p != NULL) {
+ BN_free(r->p);
+ r->p = p;
+ }
+ if (q != NULL) {
+ BN_free(r->q);
+ r->q = q;
+ }
+
+ return 1;
+}
+
+int RSA_set0_crt_params(RSA *r, BIGNUM *dmp1, BIGNUM *dmq1, BIGNUM *iqmp)
+{
+ /* If the fields dmp1, dmq1 and iqmp in r are NULL, the corresponding input
+ * parameters MUST be non-NULL.
+ */
+ if ((r->dmp1 == NULL && dmp1 == NULL)
+ || (r->dmq1 == NULL && dmq1 == NULL)
+ || (r->iqmp == NULL && iqmp == NULL))
+ return 0;
+
+ if (dmp1 != NULL) {
+ BN_free(r->dmp1);
+ r->dmp1 = dmp1;
+ }
+ if (dmq1 != NULL) {
+ BN_free(r->dmq1);
+ r->dmq1 = dmq1;
+ }
+ if (iqmp != NULL) {
+ BN_free(r->iqmp);
+ r->iqmp = iqmp;
+ }
+
+ return 1;
+}
+
+void RSA_get0_key(const RSA *r,
+ const BIGNUM **n, const BIGNUM **e, const BIGNUM **d)
+{
+ if (n != NULL)
+ *n = r->n;
+ if (e != NULL)
+ *e = r->e;
+ if (d != NULL)
+ *d = r->d;
+}
+
+void RSA_get0_factors(const RSA *r, const BIGNUM **p, const BIGNUM **q)
+{
+ if (p != NULL)
+ *p = r->p;
+ if (q != NULL)
+ *q = r->q;
+}
+
+void RSA_get0_crt_params(const RSA *r,
+ const BIGNUM **dmp1, const BIGNUM **dmq1,
+ const BIGNUM **iqmp)
+{
+ if (dmp1 != NULL)
+ *dmp1 = r->dmp1;
+ if (dmq1 != NULL)
+ *dmq1 = r->dmq1;
+ if (iqmp != NULL)
+ *iqmp = r->iqmp;
+}
+
+void RSA_clear_flags(RSA *r, int flags)
+{
+ r->flags &= ~flags;
+}
+
+int RSA_test_flags(const RSA *r, int flags)
+{
+ return r->flags & flags;
+}
+
+void RSA_set_flags(RSA *r, int flags)
+{
+ r->flags |= flags;
+}
+
+ENGINE *RSA_get0_engine(const RSA *r)
+{
+ return r->engine;
+}
+
+int RSA_pkey_ctx_ctrl(EVP_PKEY_CTX *ctx, int optype, int cmd, int p1, void *p2)
+{
+ /* If key type not RSA or RSA-PSS return error */
+ if (ctx != NULL && ctx->pmeth != NULL
+ && ctx->pmeth->pkey_id != EVP_PKEY_RSA
+ && ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS)
+ return -1;
+ return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, p1, p2);
+}
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