diff options
author | Geoff Thorpe <geoff@openssl.org> | 2001-09-25 20:00:51 +0000 |
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committer | Geoff Thorpe <geoff@openssl.org> | 2001-09-25 20:00:51 +0000 |
commit | b6d1e52d454bb321153c70cf763945d4b0d4f78e (patch) | |
tree | c13376b1794f1605a8f9e84ad9b74ca4dcf9177f /crypto/engine/tb_dh.c | |
parent | f185e725a00a76cee0bcd0a3beb92a257d2b6325 (diff) | |
download | openssl-b6d1e52d454bb321153c70cf763945d4b0d4f78e.tar.gz |
This change replaces the ENGINE's underlying mechanics with the new
ENGINE_TABLE-based stuff - as described in crypto/engine/README.
Associated miscellaneous changes;
- the previous cipher/digest hooks that hardwired directly to EVP's
OBJ_NAME-based storage have been backed out. New cipher/digest support
has been constructed and will be committed shortly.
- each implementation defines its own ENGINE_load_<name> function now.
- the "openssl" ENGINE isn't needed or loaded any more.
- core (not algorithm or class specific) ENGINE code has been split into
multiple files to increase readability and decrease linker bloat.
- ENGINE_cpy() has been removed as it wasn't really a good idea in the
first place and now, because of registration issues, can't be
meaningfully defined any more.
- BN_MOD_EXP[_CRT] support is removed as per the README.
- a bug in enginetest.c has been fixed.
NB: This commit almost certainly breaks compilation until subsequent
changes are committed.
Diffstat (limited to 'crypto/engine/tb_dh.c')
-rw-r--r-- | crypto/engine/tb_dh.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/crypto/engine/tb_dh.c b/crypto/engine/tb_dh.c new file mode 100644 index 0000000000..977f9b9c39 --- /dev/null +++ b/crypto/engine/tb_dh.c @@ -0,0 +1,120 @@ +/* ==================================================================== + * 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_DH(), the function that is + * used by DH to hook in implementation code and cache defaults (etc), will + * display brief debugging summaries to stderr with the 'nid'. */ +/* #define ENGINE_DH_DEBUG */ + +static ENGINE_TABLE *dh_table = NULL; +static const int dummy_nid = 1; + +void ENGINE_unregister_DH(ENGINE *e) + { + engine_table_unregister(&dh_table, e); + } + +static void engine_unregister_all_DH() + { + engine_table_cleanup(&dh_table); + } + +int ENGINE_register_DH(ENGINE *e) + { + if(e->dh_meth) + return engine_table_register(&dh_table, + &engine_unregister_all_DH, e, &dummy_nid, 1, 0); + return 1; + } + +void ENGINE_register_all_DH() + { + ENGINE *e; + + for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e)) + ENGINE_register_DH(e); + } + +int ENGINE_set_default_DH(ENGINE *e) + { + if(e->dh_meth) + return engine_table_register(&dh_table, + &engine_unregister_all_DH, 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_DH(void) + { + return engine_table_select(&dh_table, dummy_nid); + } + +/* Obtains an DH implementation from an ENGINE functional reference */ +const DH_METHOD *ENGINE_get_DH(const ENGINE *e) + { + return e->dh_meth; + } + +/* Sets an DH implementation in an ENGINE structure */ +int ENGINE_set_DH(ENGINE *e, const DH_METHOD *dh_meth) + { + e->dh_meth = dh_meth; + return 1; + } |