X-Git-Url: https://git.openssl.org/gitweb/?p=openssl.git;a=blobdiff_plain;f=crypto%2Frsa%2Frsa_lib.c;h=9cc88142b64916c69b11db78d08d3b4ed7700f17;hp=53c5092014befdd6f45b17051248b98618b14658;hb=d188a53617de68a707fe9459d4f4245d9a57cd9c;hpb=721688c2f8d6fd8f4559af8167cbfdc377169ad4

diff --git a/crypto/rsa/rsa_lib.c b/crypto/rsa/rsa_lib.c
index 53c5092014..9cc88142b6 100644
--- a/crypto/rsa/rsa_lib.c
+++ b/crypto/rsa/rsa_lib.c
@@ -1,25 +1,24 @@
-/* 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:
@@ -34,10 +33,10 @@
  *     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 
+ * 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
@@ -49,7 +48,7 @@
  * 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
@@ -58,353 +57,231 @@
 
 #include <stdio.h>
 #include <openssl/crypto.h>
-#include "cryptlib.h"
+#include "internal/cryptlib.h"
 #include <openssl/lhash.h>
-#include <openssl/bn.h>
+#include "internal/bn_int.h"
 #include <openssl/rsa.h>
 #include <openssl/rand.h>
 #ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
+# include <openssl/engine.h>
 #endif
 
-const char *RSA_version="RSA" OPENSSL_VERSION_PTEXT;
-
-static const RSA_METHOD *default_RSA_meth=NULL;
+static const RSA_METHOD *default_RSA_meth = NULL;
 
 RSA *RSA_new(void)
-	{
-	RSA *r=RSA_new_method(NULL);
+{
+    RSA *r = RSA_new_method(NULL);
 
-	return r;
-	}
+    return r;
+}
 
 void RSA_set_default_method(const RSA_METHOD *meth)
-	{
-	default_RSA_meth = meth;
-	}
+{
+    default_RSA_meth = meth;
+}
 
 const RSA_METHOD *RSA_get_default_method(void)
-	{
-	if (default_RSA_meth == NULL)
-		{
+{
+    if (default_RSA_meth == NULL) {
 #ifdef RSA_NULL
-		default_RSA_meth=RSA_null_method();
+        default_RSA_meth = RSA_null_method();
 #else
-#if 0 /* was: #ifdef RSAref */
-		default_RSA_meth=RSA_PKCS1_RSAref();
-#else
-		default_RSA_meth=RSA_PKCS1_SSLeay();
-#endif
+        default_RSA_meth = RSA_PKCS1_OpenSSL();
 #endif
-		}
+    }
 
-	return default_RSA_meth;
-	}
+    return default_RSA_meth;
+}
 
 const RSA_METHOD *RSA_get_method(const RSA *rsa)
-	{
-	return rsa->meth;
-	}
+{
+    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);
+{
+    /*
+     * 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
-	if (rsa->engine)
-		{
-		ENGINE_finish(rsa->engine);
-		rsa->engine = NULL;
-		}
+    ENGINE_finish(rsa->engine);
+    rsa->engine = NULL;
 #endif
-	rsa->meth = meth;
-	if (meth->init) meth->init(rsa);
-	return 1;
-	}
+    rsa->meth = meth;
+    if (meth->init)
+        meth->init(rsa);
+    return 1;
+}
 
 RSA *RSA_new_method(ENGINE *engine)
-	{
-	RSA *ret;
+{
+    RSA *ret;
+
+    ret = OPENSSL_zalloc(sizeof(*ret));
+    if (ret == NULL) {
+        RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_MALLOC_FAILURE);
+        return NULL;
+    }
 
-	ret=(RSA *)OPENSSL_malloc(sizeof(RSA));
-	if (ret == NULL)
-		{
-		RSAerr(RSA_F_RSA_NEW_METHOD,ERR_R_MALLOC_FAILURE);
-		return NULL;
-		}
+    ret->meth = RSA_get_default_method();
+#ifndef OPENSSL_NO_ENGINE
+    if (engine) {
+        if (!ENGINE_init(engine)) {
+            RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
+            OPENSSL_free(ret);
+            return NULL;
+        }
+        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);
+            ENGINE_finish(ret->engine);
+            OPENSSL_free(ret);
+            return NULL;
+        }
+    }
+#endif
 
-	ret->meth = RSA_get_default_method();
+    ret->references = 1;
+    ret->flags = ret->meth->flags & ~RSA_FLAG_NON_FIPS_ALLOW;
+    if (!CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data)) {
 #ifndef OPENSSL_NO_ENGINE
-	if (engine)
-		{
-		if (!ENGINE_init(engine))
-			{
-			RSAerr(RSA_F_RSA_NEW_METHOD, ERR_R_ENGINE_LIB);
-			OPENSSL_free(ret);
-			return NULL;
-			}
-		ret->engine = engine;
-		}
-	else
-		ret->engine = ENGINE_get_default_RSA();
-	if(ret->engine)
-		{
-		ret->meth = ENGINE_get_RSA(ret->engine);
-		if(!ret->meth)
-			{
-			RSAerr(RSA_F_RSA_NEW_METHOD,
-				ERR_R_ENGINE_LIB);
-			ENGINE_finish(ret->engine);
-			OPENSSL_free(ret);
-			return NULL;
-			}
-		}
+        ENGINE_finish(ret->engine);
 #endif
+        OPENSSL_free(ret);
+        return NULL;
+    }
 
-	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;
-	CRYPTO_new_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data);
-	if ((ret->meth->init != NULL) && !ret->meth->init(ret))
-		{
+    ret->lock = CRYPTO_THREAD_lock_new();
+    if (ret->lock == NULL) {
 #ifndef OPENSSL_NO_ENGINE
-		if (ret->engine)
-			ENGINE_finish(ret->engine);
+        ENGINE_finish(ret->engine);
 #endif
-		CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data);
-		OPENSSL_free(ret);
-		ret=NULL;
-		}
-	return(ret);
-	}
+        CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, ret, &ret->ex_data);
+        OPENSSL_free(ret);
+        return NULL;
+    }
+
+    if ((ret->meth->init != NULL) && !ret->meth->init(ret)) {
+        RSA_free(ret);
+        ret = NULL;
+    }
+
+    return ret;
+}
 
 void RSA_free(RSA *r)
-	{
-	int i;
+{
+    int i;
 
-	if (r == NULL) return;
+    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_atomic_add(&r->references, -1, &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);
+    if (r->meth->finish)
+        r->meth->finish(r);
 #ifndef OPENSSL_NO_ENGINE
-	if (r->engine)
-		ENGINE_finish(r->engine);
+    ENGINE_finish(r->engine);
 #endif
 
-	CRYPTO_free_ex_data(CRYPTO_EX_INDEX_RSA, r, &r->ex_data);
-
-	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) OPENSSL_free_locked(r->bignum_data);
-	OPENSSL_free(r);
-	}
+    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);
+    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 = CRYPTO_add(&r->references, 1, CRYPTO_LOCK_RSA);
-#ifdef REF_PRINT
-	REF_PRINT("RSA",r);
-#endif
-#ifdef REF_CHECK
-	if (i < 2)
-		{
-		fprintf(stderr, "RSA_up_ref, bad reference count\n");
-		abort();
-		}
-#endif
-	return ((i > 1) ? 1 : 0);
-	}
-
-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)
-        {
-	return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_RSA, argl, argp,
-				new_func, dup_func, free_func);
-        }
+{
+    int i;
+
+    if (CRYPTO_atomic_add(&r->references, 1, &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));
-	}
+{
+    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_size(const RSA *r)
-	{
-	return(BN_num_bytes(r->n));
-	}
-
-int RSA_public_encrypt(int flen, const 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, const 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, const 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, const unsigned char *from, unsigned char *to,
-	     RSA *rsa, int padding)
-	{
-	return(rsa->meth->rsa_pub_dec(flen, from, to, rsa, padding));
-	}
-
-int RSA_flags(const RSA *r)
-	{
-	return((r == NULL)?0:r->meth->flags);
-	}
-
-void RSA_blinding_off(RSA *rsa)
-	{
-	if (rsa->blinding != NULL)
-		{
-		BN_BLINDING_free(rsa->blinding);
-		rsa->blinding=NULL;
-		}
-	rsa->flags &= ~RSA_FLAG_BLINDING;
-	rsa->flags |= RSA_FLAG_NO_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;
-
-	if (rsa->blinding != NULL)
-		BN_BLINDING_free(rsa->blinding);
-
-	/* NB: similar code appears in setup_blinding (rsa_eay.c);
-	 * this should be placed in a new function of its own, but for reasons
-	 * of binary compatibility can't */
-
-	BN_CTX_start(ctx);
-	A = BN_CTX_get(ctx);
-	if ((RAND_status() == 0) && rsa->d != NULL && rsa->d->d != NULL)
-		{
-		/* if PRNG is not properly seeded, resort to secret exponent as unpredictable seed */
-		RAND_add(rsa->d->d, rsa->d->dmax * sizeof rsa->d->d[0], 0);
-		if (!BN_pseudo_rand_range(A,rsa->n)) goto err;
-		}
-	else
-		{
-		if (!BN_rand_range(A,rsa->n)) 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;
-	if ((rsa->blinding=BN_BLINDING_new(A,Ai,rsa->n)) == NULL) goto err;
-	/* to make things thread-safe without excessive locking,
-	 * rsa->blinding will be used just by the current thread: */
-	rsa->blinding->thread_id = CRYPTO_thread_id();
-	rsa->flags |= RSA_FLAG_BLINDING;
-	rsa->flags &= ~RSA_FLAG_NO_BLINDING;
-	BN_free(Ai);
-	ret=1;
-err:
-	BN_CTX_end(ctx);
-	if (ctx != p_ctx) BN_CTX_free(ctx);
-	return(ret);
-	}
+{
+    return (CRYPTO_get_ex_data(&r->ex_data, idx));
+}
 
 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=OPENSSL_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);
-	}
+{
+    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 = bn_sizeof_BIGNUM() * 6;
+    off = k / sizeof(BN_ULONG) + 1;
+    j = 1;
+    for (i = 0; i < 6; i++)
+        j += bn_get_top(*t[i]);
+    if ((p = OPENSSL_malloc((off + j) * sizeof(*p))) == NULL) {
+        RSAerr(RSA_F_RSA_MEMORY_LOCK, ERR_R_MALLOC_FAILURE);
+        return (0);
+    }
+    memset(p, 0, sizeof(*p) * (off + j));
+    bn = (BIGNUM *)p;
+    ul = (BN_ULONG *)&(p[off]);
+    for (i = 0; i < 6; i++) {
+        b = *(t[i]);
+        *(t[i]) = bn_array_el(bn, i);
+        memcpy(bn_array_el(bn, i), b, bn_sizeof_BIGNUM());
+        memcpy(ul, bn_get_words(b), sizeof(*ul) * bn_get_top(b));
+        bn_set_static_words(bn_array_el(bn, i), ul, bn_get_top(b));
+        ul += bn_get_top(b);
+        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);
+}
+
+int RSA_security_bits(const RSA *rsa)
+{
+    return BN_security_bits(BN_num_bits(rsa->n), -1);
+}