120 lines
4.2 KiB
C
120 lines
4.2 KiB
C
/* ====================================================================
|
|
* Copyright (c) 2000 The OpenSSL Project. All rights reserved.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* 1. Redistributions of source code must retain the above copyright
|
|
* notice, this list of conditions and the following disclaimer.
|
|
*
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
|
* notice, this list of conditions and the following disclaimer in
|
|
* the documentation and/or other materials provided with the
|
|
* distribution.
|
|
*
|
|
* 3. All advertising materials mentioning features or use of this
|
|
* software must display the following acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
|
|
*
|
|
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
|
|
* endorse or promote products derived from this software without
|
|
* prior written permission. For written permission, please contact
|
|
* licensing@OpenSSL.org.
|
|
*
|
|
* 5. Products derived from this software may not be called "OpenSSL"
|
|
* nor may "OpenSSL" appear in their names without prior written
|
|
* permission of the OpenSSL Project.
|
|
*
|
|
* 6. Redistributions of any form whatsoever must retain the following
|
|
* acknowledgment:
|
|
* "This product includes software developed by the OpenSSL Project
|
|
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
|
|
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
|
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
|
|
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
|
|
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
|
* STRICT 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.
|
|
* ====================================================================
|
|
*
|
|
* This product includes cryptographic software written by Eric Young
|
|
* (eay@cryptsoft.com). This product includes software written by Tim
|
|
* Hudson (tjh@cryptsoft.com).
|
|
*
|
|
*/
|
|
|
|
#include <openssl/evp.h>
|
|
#include <openssl/engine.h>
|
|
#include "eng_int.h"
|
|
|
|
/* If this symbol is defined then ENGINE_get_default_RAND(), the function that is
|
|
* used by RAND to hook in implementation code and cache defaults (etc), will
|
|
* display brief debugging summaries to stderr with the 'nid'. */
|
|
/* #define ENGINE_RAND_DEBUG */
|
|
|
|
static ENGINE_TABLE *rand_table = NULL;
|
|
static const int dummy_nid = 1;
|
|
|
|
void ENGINE_unregister_RAND(ENGINE *e)
|
|
{
|
|
engine_table_unregister(&rand_table, e);
|
|
}
|
|
|
|
static void engine_unregister_all_RAND(void)
|
|
{
|
|
engine_table_cleanup(&rand_table);
|
|
}
|
|
|
|
int ENGINE_register_RAND(ENGINE *e)
|
|
{
|
|
if(e->rand_meth)
|
|
return engine_table_register(&rand_table,
|
|
engine_unregister_all_RAND, e, &dummy_nid, 1, 0);
|
|
return 1;
|
|
}
|
|
|
|
void ENGINE_register_all_RAND()
|
|
{
|
|
ENGINE *e;
|
|
|
|
for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e))
|
|
ENGINE_register_RAND(e);
|
|
}
|
|
|
|
int ENGINE_set_default_RAND(ENGINE *e)
|
|
{
|
|
if(e->rand_meth)
|
|
return engine_table_register(&rand_table,
|
|
engine_unregister_all_RAND, e, &dummy_nid, 1, 1);
|
|
return 1;
|
|
}
|
|
|
|
/* Exposed API function to get a functional reference from the implementation
|
|
* table (ie. try to get a functional reference from the tabled structural
|
|
* references). */
|
|
ENGINE *ENGINE_get_default_RAND(void)
|
|
{
|
|
return engine_table_select(&rand_table, dummy_nid);
|
|
}
|
|
|
|
/* Obtains an RAND implementation from an ENGINE functional reference */
|
|
const RAND_METHOD *ENGINE_get_RAND(const ENGINE *e)
|
|
{
|
|
return e->rand_meth;
|
|
}
|
|
|
|
/* Sets an RAND implementation in an ENGINE structure */
|
|
int ENGINE_set_RAND(ENGINE *e, const RAND_METHOD *rand_meth)
|
|
{
|
|
e->rand_meth = rand_meth;
|
|
return 1;
|
|
}
|