Convert RSA blinding to new multi-threading API

[openssl.git] / crypto / bn / bn_blind.c

diff --git a/crypto/bn/bn_blind.c b/crypto/bn/bn_blind.c
index 1cd6fb8ede3a17c8f51fa05028e1bb0bcf0773a6..81b895ce379f21cc9ebf17e5c9bc86fbe2f67a00 100644 (file)
--- a/crypto/bn/bn_blind.c
+++ b/crypto/bn/bn_blind.c
@@ -1,4 +1,3 @@
-/* crypto/bn/bn_blind.c */
 /* ====================================================================
  * Copyright (c) 1998-2006 The OpenSSL Project.  All rights reserved.
  *
@@ -109,7 +108,9 @@
  * [including the GNU Public Licence.]
  */
 
-#include "cryptlib.h"
+#include <openssl/opensslconf.h>
+#include "internal/cryptlib.h"
+#include "internal/threads.h"
 #include "bn_lcl.h"
 
 #define BN_BLINDING_COUNTER     32
@@ -119,16 +120,13 @@ struct bn_blinding_st {
     BIGNUM *Ai;
     BIGNUM *e;
     BIGNUM *mod;                /* just a reference */
-#ifndef OPENSSL_NO_DEPRECATED
-    unsigned long thread_id;    /* added in OpenSSL 0.9.6j and 0.9.7b; used
-                                 * only by crypto/rsa/rsa_eay.c, rsa_lib.c */
-#endif
-    CRYPTO_THREADID tid;
+    CRYPTO_THREAD_ID tid;
     int counter;
     unsigned long flags;
     BN_MONT_CTX *m_ctx;
     int (*bn_mod_exp) (BIGNUM *r, const BIGNUM *a, const BIGNUM *p,
                        const BIGNUM *m, BN_CTX *ctx, BN_MONT_CTX *m_ctx);
+    CRYPTO_RWLOCK *lock;
 };
 
 BN_BLINDING *BN_BLINDING_new(const BIGNUM *A, const BIGNUM *Ai, BIGNUM *mod)
@@ -137,15 +135,25 @@ BN_BLINDING *BN_BLINDING_new(const BIGNUM *A, const BIGNUM *Ai, BIGNUM *mod)
 
     bn_check_top(mod);
 
-    if ((ret = (BN_BLINDING *)OPENSSL_malloc(sizeof(BN_BLINDING))) == NULL) {
+    if ((ret = OPENSSL_zalloc(sizeof(*ret))) == NULL) {
         BNerr(BN_F_BN_BLINDING_NEW, ERR_R_MALLOC_FAILURE);
-        return (NULL);
+        return NULL;
     }
-    memset(ret, 0, sizeof(BN_BLINDING));
+
+    ret->lock = CRYPTO_THREAD_lock_new();
+    if (ret->lock == NULL) {
+        BNerr(BN_F_BN_BLINDING_NEW, ERR_R_MALLOC_FAILURE);
+        OPENSSL_free(ret);
+        return NULL;
+    }
+
+    BN_BLINDING_set_current_thread(ret);
+
     if (A != NULL) {
         if ((ret->A = BN_dup(A)) == NULL)
             goto err;
     }
+
     if (Ai != NULL) {
         if ((ret->Ai = BN_dup(Ai)) == NULL)
             goto err;
@@ -154,6 +162,7 @@ BN_BLINDING *BN_BLINDING_new(const BIGNUM *A, const BIGNUM *Ai, BIGNUM *mod)
     /* save a copy of mod in the BN_BLINDING structure */
     if ((ret->mod = BN_dup(mod)) == NULL)
         goto err;
+
     if (BN_get_flags(mod, BN_FLG_CONSTTIME) != 0)
         BN_set_flags(ret->mod, BN_FLG_CONSTTIME);
 
@@ -163,12 +172,12 @@ BN_BLINDING *BN_BLINDING_new(const BIGNUM *A, const BIGNUM *Ai, BIGNUM *mod)
      * use.
      */
     ret->counter = -1;
-    CRYPTO_THREADID_current(&ret->tid);
-    return (ret);
+
+    return ret;
+
  err:
-    if (ret != NULL)
-        BN_BLINDING_free(ret);
-    return (NULL);
+    BN_BLINDING_free(ret);
+    return NULL;
 }
 
 void BN_BLINDING_free(BN_BLINDING *r)
@@ -176,14 +185,11 @@ void BN_BLINDING_free(BN_BLINDING *r)
     if (r == NULL)
         return;
 
-    if (r->A != NULL)
-        BN_free(r->A);
-    if (r->Ai != NULL)
-        BN_free(r->Ai);
-    if (r->e != NULL)
-        BN_free(r->e);
-    if (r->mod != NULL)
-        BN_free(r->mod);
+    BN_free(r->A);
+    BN_free(r->Ai);
+    BN_free(r->e);
+    BN_free(r->mod);
+    CRYPTO_THREAD_lock_free(r->lock);
     OPENSSL_free(r);
 }
 
@@ -277,21 +283,24 @@ int BN_BLINDING_invert_ex(BIGNUM *n, const BIGNUM *r, BN_BLINDING *b,
     return (ret);
 }
 
-#ifndef OPENSSL_NO_DEPRECATED
-unsigned long BN_BLINDING_get_thread_id(const BN_BLINDING *b)
+int BN_BLINDING_is_current_thread(BN_BLINDING *b)
+{
+    return CRYPTO_THREAD_compare_id(CRYPTO_THREAD_get_current_id(), b->tid);
+}
+
+void BN_BLINDING_set_current_thread(BN_BLINDING *b)
 {
-    return b->thread_id;
+    b->tid = CRYPTO_THREAD_get_current_id();
 }
 
-void BN_BLINDING_set_thread_id(BN_BLINDING *b, unsigned long n)
+int BN_BLINDING_lock(BN_BLINDING *b)
 {
-    b->thread_id = n;
+    return CRYPTO_THREAD_write_lock(b->lock);
 }
-#endif
 
-CRYPTO_THREADID *BN_BLINDING_thread_id(BN_BLINDING *b)
+int BN_BLINDING_unlock(BN_BLINDING *b)
 {
-    return &b->tid;
+    return CRYPTO_THREAD_unlock(b->lock);
 }
 
 unsigned long BN_BLINDING_get_flags(const BN_BLINDING *b)
@@ -331,8 +340,7 @@ BN_BLINDING *BN_BLINDING_create_param(BN_BLINDING *b,
         goto err;
 
     if (e != NULL) {
-        if (ret->e != NULL)
-            BN_free(ret->e);
+        BN_free(ret->e);
         ret->e = BN_dup(e);
     }
     if (ret->e == NULL)
@@ -374,7 +382,7 @@ BN_BLINDING *BN_BLINDING_create_param(BN_BLINDING *b,
 
     return ret;
  err:
-    if (b == NULL && ret != NULL) {
+    if (b == NULL) {
         BN_BLINDING_free(ret);
         ret = NULL;
     }