X-Git-Url: https://git.openssl.org/?p=openssl.git;a=blobdiff_plain;f=crypto%2Fec%2Fec_lib.c;h=d850b54ef42c75d668e4620aa66347e94d615fa8;hp=cd08a5553c45ab66b1c6c52209ef87b1b8e30fd9;hb=3aef36ffef89849348049296892327e6fdf9d705;hpb=fbfcb2243941bc84b7585711feb906610f9111c4

diff --git a/crypto/ec/ec_lib.c b/crypto/ec/ec_lib.c
index cd08a5553c..d850b54ef4 100644
--- a/crypto/ec/ec_lib.c
+++ b/crypto/ec/ec_lib.c
@@ -83,37 +83,25 @@ EC_GROUP *EC_GROUP_new(const EC_METHOD *meth)
         return NULL;
     }
 
-    ret = OPENSSL_malloc(sizeof(*ret));
+    ret = OPENSSL_zalloc(sizeof(*ret));
     if (ret == NULL) {
         ECerr(EC_F_EC_GROUP_NEW, ERR_R_MALLOC_FAILURE);
         return NULL;
     }
 
     ret->meth = meth;
-
-    ret->extra_data = NULL;
-    ret->mont_data = NULL;
-
-    ret->generator = NULL;
     ret->order = BN_new();
-    ret->cofactor = NULL;
-    if (!ret->order)
+    if (ret->order == NULL)
         goto err;
     ret->cofactor = BN_new();
-    if (!ret->cofactor)
+    if (ret->cofactor == NULL)
         goto err;
-
-    ret->curve_name = 0;
     ret->asn1_flag = OPENSSL_EC_NAMED_CURVE;
     ret->asn1_form = POINT_CONVERSION_UNCOMPRESSED;
-
-    ret->seed = NULL;
-    ret->seed_len = 0;
-
     if (!meth->group_init(ret))
         goto err;
-
     return ret;
+
  err:
     BN_free(ret->order);
     BN_free(ret->cofactor);
@@ -121,6 +109,32 @@ EC_GROUP *EC_GROUP_new(const EC_METHOD *meth)
     return NULL;
 }
 
+static void ec_group_free_precomp(EC_GROUP *group)
+{
+    switch (group->pre_comp_type) {
+    default:
+        break;
+    case pct_nistz256:
+        EC_nistz256_pre_comp_free(group->pre_comp.nistz256);
+        break;
+#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
+    case pct_nistp224:
+        EC_nistp224_pre_comp_free(group->pre_comp.nistp224);
+        break;
+    case pct_nistp256:
+        EC_nistp256_pre_comp_free(group->pre_comp.nistp256);
+        break;
+    case pct_nistp521:
+        EC_nistp521_pre_comp_free(group->pre_comp.nistp521);
+        break;
+#endif
+    case pct_ec:
+        EC_ec_pre_comp_free(group->pre_comp.ec);
+        break;
+    }
+    group->pre_comp.ec = NULL;
+}
+
 void EC_GROUP_free(EC_GROUP *group)
 {
     if (!group)
@@ -129,7 +143,7 @@ void EC_GROUP_free(EC_GROUP *group)
     if (group->meth->group_finish != 0)
         group->meth->group_finish(group);
 
-    EC_EX_DATA_free_all_data(&group->extra_data);
+    ec_group_free_precomp(group);
     BN_MONT_CTX_free(group->mont_data);
     EC_POINT_free(group->generator);
     BN_free(group->order);
@@ -148,10 +162,8 @@ void EC_GROUP_clear_free(EC_GROUP *group)
     else if (group->meth->group_finish != 0)
         group->meth->group_finish(group);
 
-    EC_EX_DATA_clear_free_all_data(&group->extra_data);
-
+    ec_group_free_precomp(group);
     BN_MONT_CTX_free(group->mont_data);
-
     EC_POINT_clear_free(group->generator);
     BN_clear_free(group->order);
     BN_clear_free(group->cofactor);
@@ -161,8 +173,6 @@ void EC_GROUP_clear_free(EC_GROUP *group)
 
 int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src)
 {
-    EC_EXTRA_DATA *d;
-
     if (dest->meth->group_copy == 0) {
         ECerr(EC_F_EC_GROUP_COPY, ERR_R_SHOULD_NOT_HAVE_BEEN_CALLED);
         return 0;
@@ -174,17 +184,29 @@ int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src)
     if (dest == src)
         return 1;
 
-    EC_EX_DATA_free_all_data(&dest->extra_data);
-
-    for (d = src->extra_data; d != NULL; d = d->next) {
-        void *t = d->dup_func(d->data);
-
-        if (t == NULL)
-            return 0;
-        if (!EC_EX_DATA_set_data
-            (&dest->extra_data, t, d->dup_func, d->free_func,
-             d->clear_free_func))
-            return 0;
+    /* Copy precomputed */
+    dest->pre_comp_type = src->pre_comp_type;
+    switch (src->pre_comp_type) {
+    default:
+        dest->pre_comp.ec = NULL;
+        break;
+    case pct_nistz256:
+        dest->pre_comp.nistz256 = EC_nistz256_pre_comp_dup(src->pre_comp.nistz256);
+        break;
+#ifndef OPENSSL_NO_EC_NISTP_64_GCC_128
+    case pct_nistp224:
+        dest->pre_comp.nistp224 = EC_nistp224_pre_comp_dup(src->pre_comp.nistp224);
+        break;
+    case pct_nistp256:
+        dest->pre_comp.nistp256 = EC_nistp256_pre_comp_dup(src->pre_comp.nistp256);
+        break;
+    case pct_nistp521:
+        dest->pre_comp.nistp521 = EC_nistp521_pre_comp_dup(src->pre_comp.nistp521);
+        break;
+#endif
+    case pct_ec:
+        dest->pre_comp.ec = EC_ec_pre_comp_dup(src->pre_comp.ec);
+        break;
     }
 
     if (src->mont_data != NULL) {
@@ -476,9 +498,9 @@ int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx)
         EC_GROUP_get_curve_name(a) != EC_GROUP_get_curve_name(b))
         return 1;
 
-    if (!ctx)
+    if (ctx == NULL)
         ctx_new = ctx = BN_CTX_new();
-    if (!ctx)
+    if (ctx == NULL)
         return -1;
 
     BN_CTX_start(ctx);
@@ -488,7 +510,7 @@ int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx)
     b1 = BN_CTX_get(ctx);
     b2 = BN_CTX_get(ctx);
     b3 = BN_CTX_get(ctx);
-    if (!b3) {
+    if (b3 == NULL) {
         BN_CTX_end(ctx);
         BN_CTX_free(ctx_new);
         return -1;
@@ -530,151 +552,6 @@ int EC_GROUP_cmp(const EC_GROUP *a, const EC_GROUP *b, BN_CTX *ctx)
     return r;
 }
 
-/* this has 'package' visibility */
-int EC_EX_DATA_set_data(EC_EXTRA_DATA **ex_data, void *data,
-                        void *(*dup_func) (void *),
-                        void (*free_func) (void *),
-                        void (*clear_free_func) (void *))
-{
-    EC_EXTRA_DATA *d;
-
-    if (ex_data == NULL)
-        return 0;
-
-    for (d = *ex_data; d != NULL; d = d->next) {
-        if (d->dup_func == dup_func && d->free_func == free_func
-            && d->clear_free_func == clear_free_func) {
-            ECerr(EC_F_EC_EX_DATA_SET_DATA, EC_R_SLOT_FULL);
-            return 0;
-        }
-    }
-
-    if (data == NULL)
-        /* no explicit entry needed */
-        return 1;
-
-    d = OPENSSL_malloc(sizeof(*d));
-    if (d == NULL)
-        return 0;
-
-    d->data = data;
-    d->dup_func = dup_func;
-    d->free_func = free_func;
-    d->clear_free_func = clear_free_func;
-
-    d->next = *ex_data;
-    *ex_data = d;
-
-    return 1;
-}
-
-/* this has 'package' visibility */
-void *EC_EX_DATA_get_data(const EC_EXTRA_DATA *ex_data,
-                          void *(*dup_func) (void *),
-                          void (*free_func) (void *),
-                          void (*clear_free_func) (void *))
-{
-    const EC_EXTRA_DATA *d;
-
-    for (d = ex_data; d != NULL; d = d->next) {
-        if (d->dup_func == dup_func && d->free_func == free_func
-            && d->clear_free_func == clear_free_func)
-            return d->data;
-    }
-
-    return NULL;
-}
-
-/* this has 'package' visibility */
-void EC_EX_DATA_free_data(EC_EXTRA_DATA **ex_data,
-                          void *(*dup_func) (void *),
-                          void (*free_func) (void *),
-                          void (*clear_free_func) (void *))
-{
-    EC_EXTRA_DATA **p;
-
-    if (ex_data == NULL)
-        return;
-
-    for (p = ex_data; *p != NULL; p = &((*p)->next)) {
-        if ((*p)->dup_func == dup_func && (*p)->free_func == free_func
-            && (*p)->clear_free_func == clear_free_func) {
-            EC_EXTRA_DATA *next = (*p)->next;
-
-            (*p)->free_func((*p)->data);
-            OPENSSL_free(*p);
-
-            *p = next;
-            return;
-        }
-    }
-}
-
-/* this has 'package' visibility */
-void EC_EX_DATA_clear_free_data(EC_EXTRA_DATA **ex_data,
-                                void *(*dup_func) (void *),
-                                void (*free_func) (void *),
-                                void (*clear_free_func) (void *))
-{
-    EC_EXTRA_DATA **p;
-
-    if (ex_data == NULL)
-        return;
-
-    for (p = ex_data; *p != NULL; p = &((*p)->next)) {
-        if ((*p)->dup_func == dup_func && (*p)->free_func == free_func
-            && (*p)->clear_free_func == clear_free_func) {
-            EC_EXTRA_DATA *next = (*p)->next;
-
-            (*p)->clear_free_func((*p)->data);
-            OPENSSL_free(*p);
-
-            *p = next;
-            return;
-        }
-    }
-}
-
-/* this has 'package' visibility */
-void EC_EX_DATA_free_all_data(EC_EXTRA_DATA **ex_data)
-{
-    EC_EXTRA_DATA *d;
-
-    if (ex_data == NULL)
-        return;
-
-    d = *ex_data;
-    while (d) {
-        EC_EXTRA_DATA *next = d->next;
-
-        d->free_func(d->data);
-        OPENSSL_free(d);
-
-        d = next;
-    }
-    *ex_data = NULL;
-}
-
-/* this has 'package' visibility */
-void EC_EX_DATA_clear_free_all_data(EC_EXTRA_DATA **ex_data)
-{
-    EC_EXTRA_DATA *d;
-
-    if (ex_data == NULL)
-        return;
-
-    d = *ex_data;
-    while (d) {
-        EC_EXTRA_DATA *next = d->next;
-
-        d->clear_free_func(d->data);
-        OPENSSL_free(d);
-
-        d = next;
-    }
-    *ex_data = NULL;
-}
-
 /* functions for EC_POINT objects */
 
 EC_POINT *EC_POINT_new(const EC_GROUP *group)
@@ -1087,7 +964,7 @@ int ec_precompute_mont_data(EC_GROUP *group)
         goto err;
 
     group->mont_data = BN_MONT_CTX_new();
-    if (!group->mont_data)
+    if (group->mont_data == NULL)
         goto err;
 
     if (!BN_MONT_CTX_set(group->mont_data, group->order, ctx)) {
@@ -1103,3 +980,13 @@ int ec_precompute_mont_data(EC_GROUP *group)
     BN_CTX_free(ctx);
     return ret;
 }
+
+int EC_KEY_set_ex_data(EC_KEY *key, int idx, void *arg)
+{
+    return CRYPTO_set_ex_data(&key->ex_data, idx, arg);
+}
+
+void *EC_KEY_get_ex_data(const EC_KEY *key, int idx)
+{
+    return CRYPTO_get_ex_data(&key->ex_data, idx);
+}