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extra_data 'mixin'.

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(This will be used for Lim/Lee precomputation data.)
This commit is contained in:
Bodo Möller
2001-03-07 09:03:32 +00:00
parent c4b36ff474
commit df9cc1535e
4 changed files with 120 additions and 2 deletions
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89
crypto/ec/ec_lib.c
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@@ -85,6 +85,11 @@ EC_GROUP *EC_GROUP_new(const EC_METHOD *meth)
}
ret->meth = meth;
ret->extra_data = NULL;
ret->extra_data_dup_func = 0;
ret->extra_data_free_func = 0;
ret->extra_data_clear_free_func = 0;
if (!meth->group_init(ret))
{
@@ -112,6 +117,9 @@ void EC_GROUP_free(EC_GROUP *group)
{
if (group->meth->group_finish != 0)
group->meth->group_finish(group);
EC_GROUP_free_extra_data(group);
OPENSSL_free(group);
}
@@ -122,6 +130,9 @@ void EC_GROUP_clear_free(EC_GROUP *group)
group->meth->group_clear_finish(group);
else if (group->meth != NULL && group->meth->group_finish != 0)
group->meth->group_finish(group);
EC_GROUP_clear_free_extra_data(group);
memset(group, 0, sizeof *group);
OPENSSL_free(group);
}
@@ -140,6 +151,21 @@ int EC_GROUP_copy(EC_GROUP *dest, const EC_GROUP *src)
return 0;
}
EC_GROUP_clear_free_extra_data(dest);
if (src->extra_data_dup_func)
{
if (src->extra_data != NULL)
{
dest->extra_data = src->extra_data_dup_func(src->extra_data);
if (dest->extra_data == NULL)
return 0;
}
dest->extra_data_dup_func = src->extra_data_dup_func;
dest->extra_data_free_func = src->extra_data_free_func;
dest->extra_data_clear_free_func = src->extra_data_clear_free_func;
}
return dest->meth->group_copy(dest, src);
}
@@ -158,6 +184,69 @@ int EC_GROUP_set_generator(EC_GROUP *group, const EC_POINT *generator, const BIG
/* TODO: 'get' functions for EC_GROUPs */
/* this has 'package' visibility */
int EC_GROUP_set_extra_data(EC_GROUP *group, void *extra_data, void *(*extra_data_dup_func)(void *),
void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *))
{
if ((group->extra_data != NULL)
|| (group->extra_data_dup_func != 0)
|| (group->extra_data_free_func != 0)
|| (group->extra_data_clear_free_func != 0))
{
ECerr(EC_F_EC_GROUP_SET_EXTRA_DATA, EC_R_SLOT_FULL);
return 0;
}
group->extra_data = extra_data;
group->extra_data_dup_func = extra_data_dup_func;
group->extra_data_free_func = extra_data_free_func;
group->extra_data_clear_free_func = extra_data_clear_free_func;
return 1;
}
/* this has 'package' visibility */
void *EC_GROUP_get_extra_data(EC_GROUP *group, void *(*extra_data_dup_func)(void *),
void (*extra_data_free_func)(void *), void (*extra_data_clear_free_func)(void *))
{
if ((group->extra_data_dup_func != extra_data_dup_func)
|| (group->extra_data_free_func != extra_data_free_func)
|| (group->extra_data_clear_free_func != extra_data_clear_free_func))
{
ECerr(EC_F_EC_GROUP_GET_EXTRA_DATA, EC_R_NO_SUCH_EXTRA_DATA);
return NULL;
}
return group->extra_data;
}
/* this has 'package' visibility */
void EC_GROUP_free_extra_data(EC_GROUP *group)
{
if (group->extra_data_free_func)
group->extra_data_free_func(group->extra_data);
group->extra_data = NULL;
group->extra_data_dup_func = 0;
group->extra_data_free_func = 0;
group->extra_data_clear_free_func = 0;
}
/* this has 'package' visibility */
void EC_GROUP_clear_free_extra_data(EC_GROUP *group)
{
if (group->extra_data_clear_free_func)
group->extra_data_clear_free_func(group->extra_data);
else if (group->extra_data_free_func)
group->extra_data_free_func(group->extra_data);
group->extra_data = NULL;
group->extra_data_dup_func = 0;
group->extra_data_free_func = 0;
group->extra_data_clear_free_func = 0;
}
/* functions for EC_POINT objects */