-/* 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:
* 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
* 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
#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->mt_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->mt_blinding != NULL) BN_BLINDING_free(r->mt_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 *ctx)
- {
- int ret=0;
-
- if (rsa->blinding != NULL)
- RSA_blinding_off(rsa);
-
- rsa->blinding = RSA_setup_blinding(rsa, ctx);
- if (rsa->blinding == NULL)
- goto err;
-
- rsa->flags |= RSA_FLAG_BLINDING;
- rsa->flags &= ~RSA_FLAG_NO_BLINDING;
- ret=1;
-err:
- return(ret);
- }
-
-static BIGNUM *rsa_get_public_exp(const BIGNUM *d, const BIGNUM *p,
- const BIGNUM *q, BN_CTX *ctx)
{
- BIGNUM *ret = NULL, *r0, *r1, *r2;
-
- if (d == NULL || p == NULL || q == NULL)
- return NULL;
-
- BN_CTX_start(ctx);
- r0 = BN_CTX_get(ctx);
- r1 = BN_CTX_get(ctx);
- r2 = BN_CTX_get(ctx);
- if (r2 == NULL)
- goto err;
-
- if (!BN_sub(r1, p, BN_value_one())) goto err;
- if (!BN_sub(r2, q, BN_value_one())) goto err;
- if (!BN_mul(r0, r1, r2, ctx)) goto err;
-
- ret = BN_mod_inverse(NULL, d, r0, ctx);
-err:
- BN_CTX_end(ctx);
- return ret;
+ return (CRYPTO_get_ex_data(&r->ex_data, idx));
}
-BN_BLINDING *RSA_setup_blinding(RSA *rsa, BN_CTX *in_ctx)
+int RSA_memory_lock(RSA *r)
{
- BIGNUM local_n;
- BIGNUM *e,*n;
- BN_CTX *ctx;
- BN_BLINDING *ret = NULL;
-
- if (in_ctx == NULL)
- {
- if ((ctx = BN_CTX_new()) == NULL) return 0;
- }
- else
- ctx = in_ctx;
-
- BN_CTX_start(ctx);
- e = BN_CTX_get(ctx);
- if (e == NULL)
- {
- RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_MALLOC_FAILURE);
- goto err;
- }
-
- if (rsa->e == NULL)
- {
- e = rsa_get_public_exp(rsa->d, rsa->p, rsa->q, ctx);
- if (e == NULL)
- {
- RSAerr(RSA_F_RSA_SETUP_BLINDING, RSA_R_NO_PUBLIC_EXPONENT);
- goto err;
- }
- }
- else
- e = rsa->e;
-
-
- 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], 0.0);
- }
-
- if (!(rsa->flags & RSA_FLAG_NO_CONSTTIME))
- {
- /* Set BN_FLG_CONSTTIME flag */
- n = &local_n;
- BN_with_flags(n, rsa->n, BN_FLG_CONSTTIME);
- }
- else
- n = rsa->n;
-
- ret = BN_BLINDING_create_param(NULL, e, n, ctx,
- rsa->meth->bn_mod_exp, rsa->_method_mod_n);
- if (ret == NULL)
- {
- RSAerr(RSA_F_RSA_SETUP_BLINDING, ERR_R_BN_LIB);
- goto err;
- }
- BN_BLINDING_set_thread_id(ret, CRYPTO_thread_id());
- BN_BLINDING_set_thread_idptr(ret, CRYPTO_thread_idptr());
-err:
- BN_CTX_end(ctx);
- if (in_ctx == NULL)
- BN_CTX_free(ctx);
-
- return ret;
+ 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_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_RSA_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 RSA_security_bits(const RSA *rsa)
+{
+ return BN_security_bits(BN_num_bits(rsa->n), -1);
+}
projects / openssl.git / blobdiff