diff options
Diffstat (limited to 'openssl/crypto/engine/tb_digest.c')
| -rw-r--r-- | openssl/crypto/engine/tb_digest.c | 143 |
1 files changed, 143 insertions, 0 deletions
diff --git a/openssl/crypto/engine/tb_digest.c b/openssl/crypto/engine/tb_digest.c new file mode 100644 index 000000000..d3f4bb274 --- /dev/null +++ b/openssl/crypto/engine/tb_digest.c @@ -0,0 +1,143 @@ +/* ==================================================================== + * 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 "eng_int.h" + +/* If this symbol is defined then ENGINE_get_digest_engine(), the function that + * is used by EVP to hook in digest code and cache defaults (etc), will display + * brief debugging summaries to stderr with the 'nid'. */ +/* #define ENGINE_DIGEST_DEBUG */ + +static ENGINE_TABLE *digest_table = NULL; + +void ENGINE_unregister_digests(ENGINE *e) + { + engine_table_unregister(&digest_table, e); + } + +static void engine_unregister_all_digests(void) + { + engine_table_cleanup(&digest_table); + } + +int ENGINE_register_digests(ENGINE *e) + { + if(e->digests) + { + const int *nids; + int num_nids = e->digests(e, NULL, &nids, 0); + if(num_nids > 0) + return engine_table_register(&digest_table, + engine_unregister_all_digests, e, nids, + num_nids, 0); + } + return 1; + } + +void ENGINE_register_all_digests() + { + ENGINE *e; + + for(e=ENGINE_get_first() ; e ; e=ENGINE_get_next(e)) + ENGINE_register_digests(e); + } + +int ENGINE_set_default_digests(ENGINE *e) + { + if(e->digests) + { + const int *nids; + int num_nids = e->digests(e, NULL, &nids, 0); + if(num_nids > 0) + return engine_table_register(&digest_table, + engine_unregister_all_digests, e, nids, + num_nids, 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) for a given digest 'nid' */ +ENGINE *ENGINE_get_digest_engine(int nid) + { + return engine_table_select(&digest_table, nid); + } + +/* Obtains a digest implementation from an ENGINE functional reference */ +const EVP_MD *ENGINE_get_digest(ENGINE *e, int nid) + { + const EVP_MD *ret; + ENGINE_DIGESTS_PTR fn = ENGINE_get_digests(e); + if(!fn || !fn(e, &ret, NULL, nid)) + { + ENGINEerr(ENGINE_F_ENGINE_GET_DIGEST, + ENGINE_R_UNIMPLEMENTED_DIGEST); + return NULL; + } + return ret; + } + +/* Gets the digest callback from an ENGINE structure */ +ENGINE_DIGESTS_PTR ENGINE_get_digests(const ENGINE *e) + { + return e->digests; + } + +/* Sets the digest callback in an ENGINE structure */ +int ENGINE_set_digests(ENGINE *e, ENGINE_DIGESTS_PTR f) + { + e->digests = f; + return 1; + } |