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main_repo / deps / openssl / openssl / ssl / ssl_ciph.c @ aa3b4b4d
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/* ssl/ssl_ciph.c */
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/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
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* All rights reserved.
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*
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* This package is an SSL implementation written
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* by Eric Young (eay@cryptsoft.com).
|
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* The implementation was written so as to conform with Netscapes SSL.
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*
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* This library is free for commercial and non-commercial use as long as
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* the following conditions are aheared to. The following conditions
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* apply to all code found in this distribution, be it the RC4, RSA,
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* lhash, DES, etc., code; not just the SSL code. The SSL documentation
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* included with this distribution is covered by the same copyright terms
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* except that the holder is Tim Hudson (tjh@cryptsoft.com).
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*
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* Copyright remains Eric Young's, and as such any Copyright notices in
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* the code are not to be removed.
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* If this package is used in a product, Eric Young should be given attribution
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* as the author of the parts of the library used.
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* This can be in the form of a textual message at program startup or
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* in documentation (online or textual) provided with the package.
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the copyright
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* notice, this list of conditions and the following disclaimer.
|
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* 2. Redistributions in binary form must reproduce the above copyright
|
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* notice, this list of conditions and the following disclaimer in the
|
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* documentation and/or other materials provided with the distribution.
|
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* 3. All advertising materials mentioning features or use of this software
|
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* must display the following acknowledgement:
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* "This product includes cryptographic software written by
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* Eric Young (eay@cryptsoft.com)"
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* The word 'cryptographic' can be left out if the rouines from the library
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* being used are not cryptographic related :-).
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* 4. If you include any Windows specific code (or a derivative thereof) from
|
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* the apps directory (application code) you must include an acknowledgement:
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* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
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*
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* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* The licence and distribution terms for any publically available version or
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* derivative of this code cannot be changed. i.e. this code cannot simply be
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* copied and put under another distribution licence
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* [including the GNU Public Licence.]
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*/
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/* ====================================================================
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* Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
|
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* modification, are permitted provided that the following conditions
|
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* are met:
|
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*
|
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* 1. Redistributions of source code must retain the above copyright
|
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
|
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* notice, this list of conditions and the following disclaimer in
|
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
|
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* openssl-core@openssl.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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/* ====================================================================
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* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
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* ECC cipher suite support in OpenSSL originally developed by
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* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
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*/
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/* ====================================================================
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* Copyright 2005 Nokia. All rights reserved.
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*
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* The portions of the attached software ("Contribution") is developed by
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* Nokia Corporation and is licensed pursuant to the OpenSSL open source
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* license.
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*
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* The Contribution, originally written by Mika Kousa and Pasi Eronen of
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* Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
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* support (see RFC 4279) to OpenSSL.
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*
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* No patent licenses or other rights except those expressly stated in
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* the OpenSSL open source license shall be deemed granted or received
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* expressly, by implication, estoppel, or otherwise.
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*
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* No assurances are provided by Nokia that the Contribution does not
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* infringe the patent or other intellectual property rights of any third
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* party or that the license provides you with all the necessary rights
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* to make use of the Contribution.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
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* ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
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* SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
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* OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
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* OTHERWISE.
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*/
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#include <stdio.h> |
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#include <openssl/objects.h> |
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#ifndef OPENSSL_NO_COMP
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#include <openssl/comp.h> |
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#endif
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#ifndef OPENSSL_NO_ENGINE
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#include <openssl/engine.h> |
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#endif
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#include "ssl_locl.h" |
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#define SSL_ENC_DES_IDX 0 |
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#define SSL_ENC_3DES_IDX 1 |
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#define SSL_ENC_RC4_IDX 2 |
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#define SSL_ENC_RC2_IDX 3 |
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#define SSL_ENC_IDEA_IDX 4 |
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#define SSL_ENC_NULL_IDX 5 |
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#define SSL_ENC_AES128_IDX 6 |
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#define SSL_ENC_AES256_IDX 7 |
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#define SSL_ENC_CAMELLIA128_IDX 8 |
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#define SSL_ENC_CAMELLIA256_IDX 9 |
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#define SSL_ENC_GOST89_IDX 10 |
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#define SSL_ENC_SEED_IDX 11 |
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#define SSL_ENC_AES128GCM_IDX 12 |
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#define SSL_ENC_AES256GCM_IDX 13 |
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#define SSL_ENC_NUM_IDX 14 |
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static const EVP_CIPHER *ssl_cipher_methods[SSL_ENC_NUM_IDX]={ |
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NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL |
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}; |
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#define SSL_COMP_NULL_IDX 0 |
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#define SSL_COMP_ZLIB_IDX 1 |
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#define SSL_COMP_NUM_IDX 2 |
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static STACK_OF(SSL_COMP) *ssl_comp_methods=NULL; |
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#define SSL_MD_MD5_IDX 0 |
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#define SSL_MD_SHA1_IDX 1 |
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#define SSL_MD_GOST94_IDX 2 |
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#define SSL_MD_GOST89MAC_IDX 3 |
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#define SSL_MD_SHA256_IDX 4 |
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#define SSL_MD_SHA384_IDX 5 |
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/*Constant SSL_MAX_DIGEST equal to size of digests array should be
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* defined in the
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* ssl_locl.h */
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#define SSL_MD_NUM_IDX SSL_MAX_DIGEST
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static const EVP_MD *ssl_digest_methods[SSL_MD_NUM_IDX]={ |
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NULL,NULL,NULL,NULL,NULL,NULL |
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}; |
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/* PKEY_TYPE for GOST89MAC is known in advance, but, because
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* implementation is engine-provided, we'll fill it only if
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* corresponding EVP_PKEY_METHOD is found
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*/
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static int ssl_mac_pkey_id[SSL_MD_NUM_IDX]={ |
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EVP_PKEY_HMAC,EVP_PKEY_HMAC,EVP_PKEY_HMAC,NID_undef, |
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EVP_PKEY_HMAC,EVP_PKEY_HMAC |
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}; |
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static int ssl_mac_secret_size[SSL_MD_NUM_IDX]={ |
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0,0,0,0,0,0 |
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}; |
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static int ssl_handshake_digest_flag[SSL_MD_NUM_IDX]={ |
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SSL_HANDSHAKE_MAC_MD5,SSL_HANDSHAKE_MAC_SHA, |
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SSL_HANDSHAKE_MAC_GOST94, 0, SSL_HANDSHAKE_MAC_SHA256,
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SSL_HANDSHAKE_MAC_SHA384 |
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}; |
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#define CIPHER_ADD 1 |
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#define CIPHER_KILL 2 |
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#define CIPHER_DEL 3 |
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#define CIPHER_ORD 4 |
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#define CIPHER_SPECIAL 5 |
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typedef struct cipher_order_st |
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{
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const SSL_CIPHER *cipher;
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int active;
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int dead;
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struct cipher_order_st *next,*prev;
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} CIPHER_ORDER; |
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static const SSL_CIPHER cipher_aliases[]={ |
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/* "ALL" doesn't include eNULL (must be specifically enabled) */
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{0,SSL_TXT_ALL,0, 0,0,~SSL_eNULL,0,0,0,0,0,0},
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/* "COMPLEMENTOFALL" */
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{0,SSL_TXT_CMPALL,0, 0,0,SSL_eNULL,0,0,0,0,0,0},
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/* "COMPLEMENTOFDEFAULT" (does *not* include ciphersuites not found in ALL!) */
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{0,SSL_TXT_CMPDEF,0, SSL_kEDH|SSL_kEECDH,SSL_aNULL,~SSL_eNULL,0,0,0,0,0,0},
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/* key exchange aliases
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* (some of those using only a single bit here combine
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* multiple key exchange algs according to the RFCs,
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* e.g. kEDH combines DHE_DSS and DHE_RSA) */
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{0,SSL_TXT_kRSA,0, SSL_kRSA, 0,0,0,0,0,0,0,0},
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{0,SSL_TXT_kDHr,0, SSL_kDHr, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
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{0,SSL_TXT_kDHd,0, SSL_kDHd, 0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
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{0,SSL_TXT_kDH,0, SSL_kDHr|SSL_kDHd,0,0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
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{0,SSL_TXT_kEDH,0, SSL_kEDH, 0,0,0,0,0,0,0,0},
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{0,SSL_TXT_DH,0, SSL_kDHr|SSL_kDHd|SSL_kEDH,0,0,0,0,0,0,0,0},
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{0,SSL_TXT_kKRB5,0, SSL_kKRB5, 0,0,0,0,0,0,0,0},
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{0,SSL_TXT_kECDHr,0, SSL_kECDHr,0,0,0,0,0,0,0,0},
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{0,SSL_TXT_kECDHe,0, SSL_kECDHe,0,0,0,0,0,0,0,0},
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{0,SSL_TXT_kECDH,0, SSL_kECDHr|SSL_kECDHe,0,0,0,0,0,0,0,0},
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{0,SSL_TXT_kEECDH,0, SSL_kEECDH,0,0,0,0,0,0,0,0},
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{0,SSL_TXT_ECDH,0, SSL_kECDHr|SSL_kECDHe|SSL_kEECDH,0,0,0,0,0,0,0,0},
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{0,SSL_TXT_kPSK,0, SSL_kPSK, 0,0,0,0,0,0,0,0},
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{0,SSL_TXT_kSRP,0, SSL_kSRP, 0,0,0,0,0,0,0,0},
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{0,SSL_TXT_kGOST,0, SSL_kGOST,0,0,0,0,0,0,0,0},
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/* server authentication aliases */
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{0,SSL_TXT_aRSA,0, 0,SSL_aRSA, 0,0,0,0,0,0,0},
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{0,SSL_TXT_aDSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0},
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{0,SSL_TXT_DSS,0, 0,SSL_aDSS, 0,0,0,0,0,0,0},
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{0,SSL_TXT_aKRB5,0, 0,SSL_aKRB5, 0,0,0,0,0,0,0},
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{0,SSL_TXT_aNULL,0, 0,SSL_aNULL, 0,0,0,0,0,0,0},
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{0,SSL_TXT_aDH,0, 0,SSL_aDH, 0,0,0,0,0,0,0}, /* no such ciphersuites supported! */
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{0,SSL_TXT_aECDH,0, 0,SSL_aECDH, 0,0,0,0,0,0,0},
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{0,SSL_TXT_aECDSA,0, 0,SSL_aECDSA,0,0,0,0,0,0,0},
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{0,SSL_TXT_ECDSA,0, 0,SSL_aECDSA, 0,0,0,0,0,0,0},
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{0,SSL_TXT_aPSK,0, 0,SSL_aPSK, 0,0,0,0,0,0,0},
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{0,SSL_TXT_aGOST94,0,0,SSL_aGOST94,0,0,0,0,0,0,0},
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{0,SSL_TXT_aGOST01,0,0,SSL_aGOST01,0,0,0,0,0,0,0},
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{0,SSL_TXT_aGOST,0,0,SSL_aGOST94|SSL_aGOST01,0,0,0,0,0,0,0},
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{0,SSL_TXT_aSRP,0, 0,SSL_aSRP, 0,0,0,0,0,0,0},
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/* aliases combining key exchange and server authentication */
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{0,SSL_TXT_EDH,0, SSL_kEDH,~SSL_aNULL,0,0,0,0,0,0,0},
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{0,SSL_TXT_EECDH,0, SSL_kEECDH,~SSL_aNULL,0,0,0,0,0,0,0},
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{0,SSL_TXT_NULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0},
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{0,SSL_TXT_KRB5,0, SSL_kKRB5,SSL_aKRB5,0,0,0,0,0,0,0},
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{0,SSL_TXT_RSA,0, SSL_kRSA,SSL_aRSA,0,0,0,0,0,0,0},
|
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{0,SSL_TXT_ADH,0, SSL_kEDH,SSL_aNULL,0,0,0,0,0,0,0},
|
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{0,SSL_TXT_AECDH,0, SSL_kEECDH,SSL_aNULL,0,0,0,0,0,0,0},
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{0,SSL_TXT_PSK,0, SSL_kPSK,SSL_aPSK,0,0,0,0,0,0,0},
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{0,SSL_TXT_SRP,0, SSL_kSRP,0,0,0,0,0,0,0,0},
|
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|
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|
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/* symmetric encryption aliases */
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{0,SSL_TXT_DES,0, 0,0,SSL_DES, 0,0,0,0,0,0},
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{0,SSL_TXT_3DES,0, 0,0,SSL_3DES, 0,0,0,0,0,0},
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{0,SSL_TXT_RC4,0, 0,0,SSL_RC4, 0,0,0,0,0,0},
|
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{0,SSL_TXT_RC2,0, 0,0,SSL_RC2, 0,0,0,0,0,0},
|
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{0,SSL_TXT_IDEA,0, 0,0,SSL_IDEA, 0,0,0,0,0,0},
|
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{0,SSL_TXT_SEED,0, 0,0,SSL_SEED, 0,0,0,0,0,0},
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{0,SSL_TXT_eNULL,0, 0,0,SSL_eNULL, 0,0,0,0,0,0},
|
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{0,SSL_TXT_AES128,0, 0,0,SSL_AES128|SSL_AES128GCM,0,0,0,0,0,0},
|
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{0,SSL_TXT_AES256,0, 0,0,SSL_AES256|SSL_AES256GCM,0,0,0,0,0,0},
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{0,SSL_TXT_AES,0, 0,0,SSL_AES,0,0,0,0,0,0},
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{0,SSL_TXT_AES_GCM,0, 0,0,SSL_AES128GCM|SSL_AES256GCM,0,0,0,0,0,0},
|
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{0,SSL_TXT_CAMELLIA128,0,0,0,SSL_CAMELLIA128,0,0,0,0,0,0},
|
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{0,SSL_TXT_CAMELLIA256,0,0,0,SSL_CAMELLIA256,0,0,0,0,0,0},
|
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{0,SSL_TXT_CAMELLIA ,0,0,0,SSL_CAMELLIA128|SSL_CAMELLIA256,0,0,0,0,0,0},
|
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|
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/* MAC aliases */
|
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{0,SSL_TXT_MD5,0, 0,0,0,SSL_MD5, 0,0,0,0,0},
|
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{0,SSL_TXT_SHA1,0, 0,0,0,SSL_SHA1, 0,0,0,0,0},
|
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{0,SSL_TXT_SHA,0, 0,0,0,SSL_SHA1, 0,0,0,0,0},
|
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{0,SSL_TXT_GOST94,0, 0,0,0,SSL_GOST94, 0,0,0,0,0},
|
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{0,SSL_TXT_GOST89MAC,0, 0,0,0,SSL_GOST89MAC, 0,0,0,0,0},
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{0,SSL_TXT_SHA256,0, 0,0,0,SSL_SHA256, 0,0,0,0,0},
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{0,SSL_TXT_SHA384,0, 0,0,0,SSL_SHA384, 0,0,0,0,0},
|
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|
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/* protocol version aliases */
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{0,SSL_TXT_SSLV2,0, 0,0,0,0,SSL_SSLV2, 0,0,0,0},
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{0,SSL_TXT_SSLV3,0, 0,0,0,0,SSL_SSLV3, 0,0,0,0},
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{0,SSL_TXT_TLSV1,0, 0,0,0,0,SSL_TLSV1, 0,0,0,0},
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{0,SSL_TXT_TLSV1_2,0, 0,0,0,0,SSL_TLSV1_2, 0,0,0,0},
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|
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/* export flag */
|
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{0,SSL_TXT_EXP,0, 0,0,0,0,0,SSL_EXPORT,0,0,0},
|
| 320 |
{0,SSL_TXT_EXPORT,0, 0,0,0,0,0,SSL_EXPORT,0,0,0},
|
| 321 |
|
| 322 |
/* strength classes */
|
| 323 |
{0,SSL_TXT_EXP40,0, 0,0,0,0,0,SSL_EXP40, 0,0,0},
|
| 324 |
{0,SSL_TXT_EXP56,0, 0,0,0,0,0,SSL_EXP56, 0,0,0},
|
| 325 |
{0,SSL_TXT_LOW,0, 0,0,0,0,0,SSL_LOW, 0,0,0},
|
| 326 |
{0,SSL_TXT_MEDIUM,0, 0,0,0,0,0,SSL_MEDIUM,0,0,0},
|
| 327 |
{0,SSL_TXT_HIGH,0, 0,0,0,0,0,SSL_HIGH, 0,0,0},
|
| 328 |
/* FIPS 140-2 approved ciphersuite */
|
| 329 |
{0,SSL_TXT_FIPS,0, 0,0,~SSL_eNULL,0,0,SSL_FIPS, 0,0,0},
|
| 330 |
}; |
| 331 |
/* Search for public key algorithm with given name and
|
| 332 |
* return its pkey_id if it is available. Otherwise return 0
|
| 333 |
*/
|
| 334 |
#ifdef OPENSSL_NO_ENGINE
|
| 335 |
|
| 336 |
static int get_optional_pkey_id(const char *pkey_name) |
| 337 |
{
|
| 338 |
const EVP_PKEY_ASN1_METHOD *ameth;
|
| 339 |
int pkey_id=0; |
| 340 |
ameth = EVP_PKEY_asn1_find_str(NULL,pkey_name,-1); |
| 341 |
if (ameth)
|
| 342 |
{
|
| 343 |
EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); |
| 344 |
} |
| 345 |
return pkey_id;
|
| 346 |
} |
| 347 |
|
| 348 |
#else
|
| 349 |
|
| 350 |
static int get_optional_pkey_id(const char *pkey_name) |
| 351 |
{
|
| 352 |
const EVP_PKEY_ASN1_METHOD *ameth;
|
| 353 |
ENGINE *tmpeng = NULL;
|
| 354 |
int pkey_id=0; |
| 355 |
ameth = EVP_PKEY_asn1_find_str(&tmpeng,pkey_name,-1);
|
| 356 |
if (ameth)
|
| 357 |
{
|
| 358 |
EVP_PKEY_asn1_get0_info(&pkey_id, NULL,NULL,NULL,NULL,ameth); |
| 359 |
} |
| 360 |
if (tmpeng) ENGINE_finish(tmpeng);
|
| 361 |
return pkey_id;
|
| 362 |
} |
| 363 |
|
| 364 |
#endif
|
| 365 |
|
| 366 |
void ssl_load_ciphers(void) |
| 367 |
{
|
| 368 |
ssl_cipher_methods[SSL_ENC_DES_IDX]= |
| 369 |
EVP_get_cipherbyname(SN_des_cbc); |
| 370 |
ssl_cipher_methods[SSL_ENC_3DES_IDX]= |
| 371 |
EVP_get_cipherbyname(SN_des_ede3_cbc); |
| 372 |
ssl_cipher_methods[SSL_ENC_RC4_IDX]= |
| 373 |
EVP_get_cipherbyname(SN_rc4); |
| 374 |
ssl_cipher_methods[SSL_ENC_RC2_IDX]= |
| 375 |
EVP_get_cipherbyname(SN_rc2_cbc); |
| 376 |
#ifndef OPENSSL_NO_IDEA
|
| 377 |
ssl_cipher_methods[SSL_ENC_IDEA_IDX]= |
| 378 |
EVP_get_cipherbyname(SN_idea_cbc); |
| 379 |
#else
|
| 380 |
ssl_cipher_methods[SSL_ENC_IDEA_IDX]= NULL;
|
| 381 |
#endif
|
| 382 |
ssl_cipher_methods[SSL_ENC_AES128_IDX]= |
| 383 |
EVP_get_cipherbyname(SN_aes_128_cbc); |
| 384 |
ssl_cipher_methods[SSL_ENC_AES256_IDX]= |
| 385 |
EVP_get_cipherbyname(SN_aes_256_cbc); |
| 386 |
ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX]= |
| 387 |
EVP_get_cipherbyname(SN_camellia_128_cbc); |
| 388 |
ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX]= |
| 389 |
EVP_get_cipherbyname(SN_camellia_256_cbc); |
| 390 |
ssl_cipher_methods[SSL_ENC_GOST89_IDX]= |
| 391 |
EVP_get_cipherbyname(SN_gost89_cnt); |
| 392 |
ssl_cipher_methods[SSL_ENC_SEED_IDX]= |
| 393 |
EVP_get_cipherbyname(SN_seed_cbc); |
| 394 |
|
| 395 |
ssl_cipher_methods[SSL_ENC_AES128GCM_IDX]= |
| 396 |
EVP_get_cipherbyname(SN_aes_128_gcm); |
| 397 |
ssl_cipher_methods[SSL_ENC_AES256GCM_IDX]= |
| 398 |
EVP_get_cipherbyname(SN_aes_256_gcm); |
| 399 |
|
| 400 |
ssl_digest_methods[SSL_MD_MD5_IDX]= |
| 401 |
EVP_get_digestbyname(SN_md5); |
| 402 |
ssl_mac_secret_size[SSL_MD_MD5_IDX]= |
| 403 |
EVP_MD_size(ssl_digest_methods[SSL_MD_MD5_IDX]); |
| 404 |
OPENSSL_assert(ssl_mac_secret_size[SSL_MD_MD5_IDX] >= 0);
|
| 405 |
ssl_digest_methods[SSL_MD_SHA1_IDX]= |
| 406 |
EVP_get_digestbyname(SN_sha1); |
| 407 |
ssl_mac_secret_size[SSL_MD_SHA1_IDX]= |
| 408 |
EVP_MD_size(ssl_digest_methods[SSL_MD_SHA1_IDX]); |
| 409 |
OPENSSL_assert(ssl_mac_secret_size[SSL_MD_SHA1_IDX] >= 0);
|
| 410 |
ssl_digest_methods[SSL_MD_GOST94_IDX]= |
| 411 |
EVP_get_digestbyname(SN_id_GostR3411_94); |
| 412 |
if (ssl_digest_methods[SSL_MD_GOST94_IDX])
|
| 413 |
{
|
| 414 |
ssl_mac_secret_size[SSL_MD_GOST94_IDX]= |
| 415 |
EVP_MD_size(ssl_digest_methods[SSL_MD_GOST94_IDX]); |
| 416 |
OPENSSL_assert(ssl_mac_secret_size[SSL_MD_GOST94_IDX] >= 0);
|
| 417 |
} |
| 418 |
ssl_digest_methods[SSL_MD_GOST89MAC_IDX]= |
| 419 |
EVP_get_digestbyname(SN_id_Gost28147_89_MAC); |
| 420 |
ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX] = get_optional_pkey_id("gost-mac");
|
| 421 |
if (ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]) {
|
| 422 |
ssl_mac_secret_size[SSL_MD_GOST89MAC_IDX]=32;
|
| 423 |
} |
| 424 |
|
| 425 |
ssl_digest_methods[SSL_MD_SHA256_IDX]= |
| 426 |
EVP_get_digestbyname(SN_sha256); |
| 427 |
ssl_mac_secret_size[SSL_MD_SHA256_IDX]= |
| 428 |
EVP_MD_size(ssl_digest_methods[SSL_MD_SHA256_IDX]); |
| 429 |
ssl_digest_methods[SSL_MD_SHA384_IDX]= |
| 430 |
EVP_get_digestbyname(SN_sha384); |
| 431 |
ssl_mac_secret_size[SSL_MD_SHA384_IDX]= |
| 432 |
EVP_MD_size(ssl_digest_methods[SSL_MD_SHA384_IDX]); |
| 433 |
} |
| 434 |
#ifndef OPENSSL_NO_COMP
|
| 435 |
|
| 436 |
static int sk_comp_cmp(const SSL_COMP * const *a, |
| 437 |
const SSL_COMP * const *b) |
| 438 |
{
|
| 439 |
return((*a)->id-(*b)->id);
|
| 440 |
} |
| 441 |
|
| 442 |
static void load_builtin_compressions(void) |
| 443 |
{
|
| 444 |
int got_write_lock = 0; |
| 445 |
|
| 446 |
CRYPTO_r_lock(CRYPTO_LOCK_SSL); |
| 447 |
if (ssl_comp_methods == NULL) |
| 448 |
{
|
| 449 |
CRYPTO_r_unlock(CRYPTO_LOCK_SSL); |
| 450 |
CRYPTO_w_lock(CRYPTO_LOCK_SSL); |
| 451 |
got_write_lock = 1;
|
| 452 |
|
| 453 |
if (ssl_comp_methods == NULL) |
| 454 |
{
|
| 455 |
SSL_COMP *comp = NULL;
|
| 456 |
|
| 457 |
MemCheck_off(); |
| 458 |
ssl_comp_methods=sk_SSL_COMP_new(sk_comp_cmp); |
| 459 |
if (ssl_comp_methods != NULL) |
| 460 |
{
|
| 461 |
comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
|
| 462 |
if (comp != NULL) |
| 463 |
{
|
| 464 |
comp->method=COMP_zlib(); |
| 465 |
if (comp->method
|
| 466 |
&& comp->method->type == NID_undef) |
| 467 |
OPENSSL_free(comp); |
| 468 |
else
|
| 469 |
{
|
| 470 |
comp->id=SSL_COMP_ZLIB_IDX; |
| 471 |
comp->name=comp->method->name; |
| 472 |
sk_SSL_COMP_push(ssl_comp_methods,comp); |
| 473 |
} |
| 474 |
} |
| 475 |
sk_SSL_COMP_sort(ssl_comp_methods); |
| 476 |
} |
| 477 |
MemCheck_on(); |
| 478 |
} |
| 479 |
} |
| 480 |
|
| 481 |
if (got_write_lock)
|
| 482 |
CRYPTO_w_unlock(CRYPTO_LOCK_SSL); |
| 483 |
else
|
| 484 |
CRYPTO_r_unlock(CRYPTO_LOCK_SSL); |
| 485 |
} |
| 486 |
#endif
|
| 487 |
|
| 488 |
int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, |
| 489 |
const EVP_MD **md, int *mac_pkey_type, int *mac_secret_size,SSL_COMP **comp) |
| 490 |
{
|
| 491 |
int i;
|
| 492 |
const SSL_CIPHER *c;
|
| 493 |
|
| 494 |
c=s->cipher; |
| 495 |
if (c == NULL) return(0); |
| 496 |
if (comp != NULL) |
| 497 |
{
|
| 498 |
SSL_COMP ctmp; |
| 499 |
#ifndef OPENSSL_NO_COMP
|
| 500 |
load_builtin_compressions(); |
| 501 |
#endif
|
| 502 |
|
| 503 |
*comp=NULL;
|
| 504 |
ctmp.id=s->compress_meth; |
| 505 |
if (ssl_comp_methods != NULL) |
| 506 |
{
|
| 507 |
i=sk_SSL_COMP_find(ssl_comp_methods,&ctmp); |
| 508 |
if (i >= 0) |
| 509 |
*comp=sk_SSL_COMP_value(ssl_comp_methods,i); |
| 510 |
else
|
| 511 |
*comp=NULL;
|
| 512 |
} |
| 513 |
} |
| 514 |
|
| 515 |
if ((enc == NULL) || (md == NULL)) return(0); |
| 516 |
|
| 517 |
switch (c->algorithm_enc)
|
| 518 |
{
|
| 519 |
case SSL_DES:
|
| 520 |
i=SSL_ENC_DES_IDX; |
| 521 |
break;
|
| 522 |
case SSL_3DES:
|
| 523 |
i=SSL_ENC_3DES_IDX; |
| 524 |
break;
|
| 525 |
case SSL_RC4:
|
| 526 |
i=SSL_ENC_RC4_IDX; |
| 527 |
break;
|
| 528 |
case SSL_RC2:
|
| 529 |
i=SSL_ENC_RC2_IDX; |
| 530 |
break;
|
| 531 |
case SSL_IDEA:
|
| 532 |
i=SSL_ENC_IDEA_IDX; |
| 533 |
break;
|
| 534 |
case SSL_eNULL:
|
| 535 |
i=SSL_ENC_NULL_IDX; |
| 536 |
break;
|
| 537 |
case SSL_AES128:
|
| 538 |
i=SSL_ENC_AES128_IDX; |
| 539 |
break;
|
| 540 |
case SSL_AES256:
|
| 541 |
i=SSL_ENC_AES256_IDX; |
| 542 |
break;
|
| 543 |
case SSL_CAMELLIA128:
|
| 544 |
i=SSL_ENC_CAMELLIA128_IDX; |
| 545 |
break;
|
| 546 |
case SSL_CAMELLIA256:
|
| 547 |
i=SSL_ENC_CAMELLIA256_IDX; |
| 548 |
break;
|
| 549 |
case SSL_eGOST2814789CNT:
|
| 550 |
i=SSL_ENC_GOST89_IDX; |
| 551 |
break;
|
| 552 |
case SSL_SEED:
|
| 553 |
i=SSL_ENC_SEED_IDX; |
| 554 |
break;
|
| 555 |
case SSL_AES128GCM:
|
| 556 |
i=SSL_ENC_AES128GCM_IDX; |
| 557 |
break;
|
| 558 |
case SSL_AES256GCM:
|
| 559 |
i=SSL_ENC_AES256GCM_IDX; |
| 560 |
break;
|
| 561 |
default:
|
| 562 |
i= -1;
|
| 563 |
break;
|
| 564 |
} |
| 565 |
|
| 566 |
if ((i < 0) || (i >= SSL_ENC_NUM_IDX)) |
| 567 |
*enc=NULL;
|
| 568 |
else
|
| 569 |
{
|
| 570 |
if (i == SSL_ENC_NULL_IDX)
|
| 571 |
*enc=EVP_enc_null(); |
| 572 |
else
|
| 573 |
*enc=ssl_cipher_methods[i]; |
| 574 |
} |
| 575 |
|
| 576 |
switch (c->algorithm_mac)
|
| 577 |
{
|
| 578 |
case SSL_MD5:
|
| 579 |
i=SSL_MD_MD5_IDX; |
| 580 |
break;
|
| 581 |
case SSL_SHA1:
|
| 582 |
i=SSL_MD_SHA1_IDX; |
| 583 |
break;
|
| 584 |
case SSL_SHA256:
|
| 585 |
i=SSL_MD_SHA256_IDX; |
| 586 |
break;
|
| 587 |
case SSL_SHA384:
|
| 588 |
i=SSL_MD_SHA384_IDX; |
| 589 |
break;
|
| 590 |
case SSL_GOST94:
|
| 591 |
i = SSL_MD_GOST94_IDX; |
| 592 |
break;
|
| 593 |
case SSL_GOST89MAC:
|
| 594 |
i = SSL_MD_GOST89MAC_IDX; |
| 595 |
break;
|
| 596 |
default:
|
| 597 |
i= -1;
|
| 598 |
break;
|
| 599 |
} |
| 600 |
if ((i < 0) || (i >= SSL_MD_NUM_IDX)) |
| 601 |
{
|
| 602 |
*md=NULL;
|
| 603 |
if (mac_pkey_type!=NULL) *mac_pkey_type = NID_undef; |
| 604 |
if (mac_secret_size!=NULL) *mac_secret_size = 0; |
| 605 |
if (c->algorithm_mac == SSL_AEAD)
|
| 606 |
mac_pkey_type = NULL;
|
| 607 |
} |
| 608 |
else
|
| 609 |
{
|
| 610 |
*md=ssl_digest_methods[i]; |
| 611 |
if (mac_pkey_type!=NULL) *mac_pkey_type = ssl_mac_pkey_id[i]; |
| 612 |
if (mac_secret_size!=NULL) *mac_secret_size = ssl_mac_secret_size[i]; |
| 613 |
} |
| 614 |
|
| 615 |
if ((*enc != NULL) && |
| 616 |
(*md != NULL || (EVP_CIPHER_flags(*enc)&EVP_CIPH_FLAG_AEAD_CIPHER)) &&
|
| 617 |
(!mac_pkey_type||*mac_pkey_type != NID_undef)) |
| 618 |
{
|
| 619 |
const EVP_CIPHER *evp;
|
| 620 |
|
| 621 |
if (s->ssl_version>>8 != TLS1_VERSION_MAJOR || |
| 622 |
s->ssl_version < TLS1_VERSION) |
| 623 |
return 1; |
| 624 |
|
| 625 |
#ifdef OPENSSL_FIPS
|
| 626 |
if (FIPS_mode())
|
| 627 |
return 1; |
| 628 |
#endif
|
| 629 |
|
| 630 |
if (c->algorithm_enc == SSL_RC4 &&
|
| 631 |
c->algorithm_mac == SSL_MD5 && |
| 632 |
(evp=EVP_get_cipherbyname("RC4-HMAC-MD5")))
|
| 633 |
*enc = evp, *md = NULL;
|
| 634 |
else if (c->algorithm_enc == SSL_AES128 && |
| 635 |
c->algorithm_mac == SSL_SHA1 && |
| 636 |
(evp=EVP_get_cipherbyname("AES-128-CBC-HMAC-SHA1")))
|
| 637 |
*enc = evp, *md = NULL;
|
| 638 |
else if (c->algorithm_enc == SSL_AES256 && |
| 639 |
c->algorithm_mac == SSL_SHA1 && |
| 640 |
(evp=EVP_get_cipherbyname("AES-256-CBC-HMAC-SHA1")))
|
| 641 |
*enc = evp, *md = NULL;
|
| 642 |
return(1); |
| 643 |
} |
| 644 |
else
|
| 645 |
return(0); |
| 646 |
} |
| 647 |
|
| 648 |
int ssl_get_handshake_digest(int idx, long *mask, const EVP_MD **md) |
| 649 |
{
|
| 650 |
if (idx <0||idx>=SSL_MD_NUM_IDX) |
| 651 |
{
|
| 652 |
return 0; |
| 653 |
} |
| 654 |
*mask = ssl_handshake_digest_flag[idx]; |
| 655 |
if (*mask)
|
| 656 |
*md = ssl_digest_methods[idx]; |
| 657 |
else
|
| 658 |
*md = NULL;
|
| 659 |
return 1; |
| 660 |
} |
| 661 |
|
| 662 |
#define ITEM_SEP(a) \
|
| 663 |
(((a) == ':') || ((a) == ' ') || ((a) == ';') || ((a) == ',')) |
| 664 |
|
| 665 |
static void ll_append_tail(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
| 666 |
CIPHER_ORDER **tail) |
| 667 |
{
|
| 668 |
if (curr == *tail) return; |
| 669 |
if (curr == *head)
|
| 670 |
*head=curr->next; |
| 671 |
if (curr->prev != NULL) |
| 672 |
curr->prev->next=curr->next; |
| 673 |
if (curr->next != NULL) |
| 674 |
curr->next->prev=curr->prev; |
| 675 |
(*tail)->next=curr; |
| 676 |
curr->prev= *tail; |
| 677 |
curr->next=NULL;
|
| 678 |
*tail=curr; |
| 679 |
} |
| 680 |
|
| 681 |
static void ll_append_head(CIPHER_ORDER **head, CIPHER_ORDER *curr, |
| 682 |
CIPHER_ORDER **tail) |
| 683 |
{
|
| 684 |
if (curr == *head) return; |
| 685 |
if (curr == *tail)
|
| 686 |
*tail=curr->prev; |
| 687 |
if (curr->next != NULL) |
| 688 |
curr->next->prev=curr->prev; |
| 689 |
if (curr->prev != NULL) |
| 690 |
curr->prev->next=curr->next; |
| 691 |
(*head)->prev=curr; |
| 692 |
curr->next= *head; |
| 693 |
curr->prev=NULL;
|
| 694 |
*head=curr; |
| 695 |
} |
| 696 |
|
| 697 |
static void ssl_cipher_get_disabled(unsigned long *mkey, unsigned long *auth, unsigned long *enc, unsigned long *mac, unsigned long *ssl) |
| 698 |
{
|
| 699 |
*mkey = 0;
|
| 700 |
*auth = 0;
|
| 701 |
*enc = 0;
|
| 702 |
*mac = 0;
|
| 703 |
*ssl = 0;
|
| 704 |
|
| 705 |
#ifdef OPENSSL_NO_RSA
|
| 706 |
*mkey |= SSL_kRSA; |
| 707 |
*auth |= SSL_aRSA; |
| 708 |
#endif
|
| 709 |
#ifdef OPENSSL_NO_DSA
|
| 710 |
*auth |= SSL_aDSS; |
| 711 |
#endif
|
| 712 |
*mkey |= SSL_kDHr|SSL_kDHd; /* no such ciphersuites supported! */
|
| 713 |
*auth |= SSL_aDH; |
| 714 |
#ifdef OPENSSL_NO_DH
|
| 715 |
*mkey |= SSL_kDHr|SSL_kDHd|SSL_kEDH; |
| 716 |
*auth |= SSL_aDH; |
| 717 |
#endif
|
| 718 |
#ifdef OPENSSL_NO_KRB5
|
| 719 |
*mkey |= SSL_kKRB5; |
| 720 |
*auth |= SSL_aKRB5; |
| 721 |
#endif
|
| 722 |
#ifdef OPENSSL_NO_ECDSA
|
| 723 |
*auth |= SSL_aECDSA; |
| 724 |
#endif
|
| 725 |
#ifdef OPENSSL_NO_ECDH
|
| 726 |
*mkey |= SSL_kECDHe|SSL_kECDHr; |
| 727 |
*auth |= SSL_aECDH; |
| 728 |
#endif
|
| 729 |
#ifdef OPENSSL_NO_PSK
|
| 730 |
*mkey |= SSL_kPSK; |
| 731 |
*auth |= SSL_aPSK; |
| 732 |
#endif
|
| 733 |
#ifdef OPENSSL_NO_SRP
|
| 734 |
*mkey |= SSL_kSRP; |
| 735 |
#endif
|
| 736 |
/* Check for presence of GOST 34.10 algorithms, and if they
|
| 737 |
* do not present, disable appropriate auth and key exchange */
|
| 738 |
if (!get_optional_pkey_id("gost94")) { |
| 739 |
*auth |= SSL_aGOST94; |
| 740 |
} |
| 741 |
if (!get_optional_pkey_id("gost2001")) { |
| 742 |
*auth |= SSL_aGOST01; |
| 743 |
} |
| 744 |
/* Disable GOST key exchange if no GOST signature algs are available * */
|
| 745 |
if ((*auth & (SSL_aGOST94|SSL_aGOST01)) == (SSL_aGOST94|SSL_aGOST01)) {
|
| 746 |
*mkey |= SSL_kGOST; |
| 747 |
} |
| 748 |
#ifdef SSL_FORBID_ENULL
|
| 749 |
*enc |= SSL_eNULL; |
| 750 |
#endif
|
| 751 |
|
| 752 |
|
| 753 |
|
| 754 |
*enc |= (ssl_cipher_methods[SSL_ENC_DES_IDX ] == NULL) ? SSL_DES :0; |
| 755 |
*enc |= (ssl_cipher_methods[SSL_ENC_3DES_IDX] == NULL) ? SSL_3DES:0; |
| 756 |
*enc |= (ssl_cipher_methods[SSL_ENC_RC4_IDX ] == NULL) ? SSL_RC4 :0; |
| 757 |
*enc |= (ssl_cipher_methods[SSL_ENC_RC2_IDX ] == NULL) ? SSL_RC2 :0; |
| 758 |
*enc |= (ssl_cipher_methods[SSL_ENC_IDEA_IDX] == NULL) ? SSL_IDEA:0; |
| 759 |
*enc |= (ssl_cipher_methods[SSL_ENC_AES128_IDX] == NULL) ? SSL_AES128:0; |
| 760 |
*enc |= (ssl_cipher_methods[SSL_ENC_AES256_IDX] == NULL) ? SSL_AES256:0; |
| 761 |
*enc |= (ssl_cipher_methods[SSL_ENC_AES128GCM_IDX] == NULL) ? SSL_AES128GCM:0; |
| 762 |
*enc |= (ssl_cipher_methods[SSL_ENC_AES256GCM_IDX] == NULL) ? SSL_AES256GCM:0; |
| 763 |
*enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA128_IDX] == NULL) ? SSL_CAMELLIA128:0; |
| 764 |
*enc |= (ssl_cipher_methods[SSL_ENC_CAMELLIA256_IDX] == NULL) ? SSL_CAMELLIA256:0; |
| 765 |
*enc |= (ssl_cipher_methods[SSL_ENC_GOST89_IDX] == NULL) ? SSL_eGOST2814789CNT:0; |
| 766 |
*enc |= (ssl_cipher_methods[SSL_ENC_SEED_IDX] == NULL) ? SSL_SEED:0; |
| 767 |
|
| 768 |
*mac |= (ssl_digest_methods[SSL_MD_MD5_IDX ] == NULL) ? SSL_MD5 :0; |
| 769 |
*mac |= (ssl_digest_methods[SSL_MD_SHA1_IDX] == NULL) ? SSL_SHA1:0; |
| 770 |
*mac |= (ssl_digest_methods[SSL_MD_SHA256_IDX] == NULL) ? SSL_SHA256:0; |
| 771 |
*mac |= (ssl_digest_methods[SSL_MD_SHA384_IDX] == NULL) ? SSL_SHA384:0; |
| 772 |
*mac |= (ssl_digest_methods[SSL_MD_GOST94_IDX] == NULL) ? SSL_GOST94:0; |
| 773 |
*mac |= (ssl_digest_methods[SSL_MD_GOST89MAC_IDX] == NULL || ssl_mac_pkey_id[SSL_MD_GOST89MAC_IDX]==NID_undef)? SSL_GOST89MAC:0; |
| 774 |
|
| 775 |
} |
| 776 |
|
| 777 |
static void ssl_cipher_collect_ciphers(const SSL_METHOD *ssl_method, |
| 778 |
int num_of_ciphers,
|
| 779 |
unsigned long disabled_mkey, unsigned long disabled_auth, |
| 780 |
unsigned long disabled_enc, unsigned long disabled_mac, |
| 781 |
unsigned long disabled_ssl, |
| 782 |
CIPHER_ORDER *co_list, |
| 783 |
CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) |
| 784 |
{
|
| 785 |
int i, co_list_num;
|
| 786 |
const SSL_CIPHER *c;
|
| 787 |
|
| 788 |
/*
|
| 789 |
* We have num_of_ciphers descriptions compiled in, depending on the
|
| 790 |
* method selected (SSLv2 and/or SSLv3, TLSv1 etc).
|
| 791 |
* These will later be sorted in a linked list with at most num
|
| 792 |
* entries.
|
| 793 |
*/
|
| 794 |
|
| 795 |
/* Get the initial list of ciphers */
|
| 796 |
co_list_num = 0; /* actual count of ciphers */ |
| 797 |
for (i = 0; i < num_of_ciphers; i++) |
| 798 |
{
|
| 799 |
c = ssl_method->get_cipher(i); |
| 800 |
/* drop those that use any of that is not available */
|
| 801 |
if ((c != NULL) && c->valid && |
| 802 |
#ifdef OPENSSL_FIPS
|
| 803 |
(!FIPS_mode() || (c->algo_strength & SSL_FIPS)) && |
| 804 |
#endif
|
| 805 |
!(c->algorithm_mkey & disabled_mkey) && |
| 806 |
!(c->algorithm_auth & disabled_auth) && |
| 807 |
!(c->algorithm_enc & disabled_enc) && |
| 808 |
!(c->algorithm_mac & disabled_mac) && |
| 809 |
!(c->algorithm_ssl & disabled_ssl)) |
| 810 |
{
|
| 811 |
co_list[co_list_num].cipher = c; |
| 812 |
co_list[co_list_num].next = NULL;
|
| 813 |
co_list[co_list_num].prev = NULL;
|
| 814 |
co_list[co_list_num].active = 0;
|
| 815 |
co_list_num++; |
| 816 |
#ifdef KSSL_DEBUG
|
| 817 |
printf("\t%d: %s %lx %lx %lx\n",i,c->name,c->id,c->algorithm_mkey,c->algorithm_auth);
|
| 818 |
#endif /* KSSL_DEBUG */ |
| 819 |
/*
|
| 820 |
if (!sk_push(ca_list,(char *)c)) goto err;
|
| 821 |
*/
|
| 822 |
} |
| 823 |
} |
| 824 |
|
| 825 |
/*
|
| 826 |
* Prepare linked list from list entries
|
| 827 |
*/
|
| 828 |
if (co_list_num > 0) |
| 829 |
{
|
| 830 |
co_list[0].prev = NULL; |
| 831 |
|
| 832 |
if (co_list_num > 1) |
| 833 |
{
|
| 834 |
co_list[0].next = &co_list[1]; |
| 835 |
|
| 836 |
for (i = 1; i < co_list_num - 1; i++) |
| 837 |
{
|
| 838 |
co_list[i].prev = &co_list[i - 1];
|
| 839 |
co_list[i].next = &co_list[i + 1];
|
| 840 |
} |
| 841 |
|
| 842 |
co_list[co_list_num - 1].prev = &co_list[co_list_num - 2]; |
| 843 |
} |
| 844 |
|
| 845 |
co_list[co_list_num - 1].next = NULL; |
| 846 |
|
| 847 |
*head_p = &co_list[0];
|
| 848 |
*tail_p = &co_list[co_list_num - 1];
|
| 849 |
} |
| 850 |
} |
| 851 |
|
| 852 |
static void ssl_cipher_collect_aliases(const SSL_CIPHER **ca_list, |
| 853 |
int num_of_group_aliases,
|
| 854 |
unsigned long disabled_mkey, unsigned long disabled_auth, |
| 855 |
unsigned long disabled_enc, unsigned long disabled_mac, |
| 856 |
unsigned long disabled_ssl, |
| 857 |
CIPHER_ORDER *head) |
| 858 |
{
|
| 859 |
CIPHER_ORDER *ciph_curr; |
| 860 |
const SSL_CIPHER **ca_curr;
|
| 861 |
int i;
|
| 862 |
unsigned long mask_mkey = ~disabled_mkey; |
| 863 |
unsigned long mask_auth = ~disabled_auth; |
| 864 |
unsigned long mask_enc = ~disabled_enc; |
| 865 |
unsigned long mask_mac = ~disabled_mac; |
| 866 |
unsigned long mask_ssl = ~disabled_ssl; |
| 867 |
|
| 868 |
/*
|
| 869 |
* First, add the real ciphers as already collected
|
| 870 |
*/
|
| 871 |
ciph_curr = head; |
| 872 |
ca_curr = ca_list; |
| 873 |
while (ciph_curr != NULL) |
| 874 |
{
|
| 875 |
*ca_curr = ciph_curr->cipher; |
| 876 |
ca_curr++; |
| 877 |
ciph_curr = ciph_curr->next; |
| 878 |
} |
| 879 |
|
| 880 |
/*
|
| 881 |
* Now we add the available ones from the cipher_aliases[] table.
|
| 882 |
* They represent either one or more algorithms, some of which
|
| 883 |
* in any affected category must be supported (set in enabled_mask),
|
| 884 |
* or represent a cipher strength value (will be added in any case because algorithms=0).
|
| 885 |
*/
|
| 886 |
for (i = 0; i < num_of_group_aliases; i++) |
| 887 |
{
|
| 888 |
unsigned long algorithm_mkey = cipher_aliases[i].algorithm_mkey; |
| 889 |
unsigned long algorithm_auth = cipher_aliases[i].algorithm_auth; |
| 890 |
unsigned long algorithm_enc = cipher_aliases[i].algorithm_enc; |
| 891 |
unsigned long algorithm_mac = cipher_aliases[i].algorithm_mac; |
| 892 |
unsigned long algorithm_ssl = cipher_aliases[i].algorithm_ssl; |
| 893 |
|
| 894 |
if (algorithm_mkey)
|
| 895 |
if ((algorithm_mkey & mask_mkey) == 0) |
| 896 |
continue;
|
| 897 |
|
| 898 |
if (algorithm_auth)
|
| 899 |
if ((algorithm_auth & mask_auth) == 0) |
| 900 |
continue;
|
| 901 |
|
| 902 |
if (algorithm_enc)
|
| 903 |
if ((algorithm_enc & mask_enc) == 0) |
| 904 |
continue;
|
| 905 |
|
| 906 |
if (algorithm_mac)
|
| 907 |
if ((algorithm_mac & mask_mac) == 0) |
| 908 |
continue;
|
| 909 |
|
| 910 |
if (algorithm_ssl)
|
| 911 |
if ((algorithm_ssl & mask_ssl) == 0) |
| 912 |
continue;
|
| 913 |
|
| 914 |
*ca_curr = (SSL_CIPHER *)(cipher_aliases + i); |
| 915 |
ca_curr++; |
| 916 |
} |
| 917 |
|
| 918 |
*ca_curr = NULL; /* end of list */ |
| 919 |
} |
| 920 |
|
| 921 |
static void ssl_cipher_apply_rule(unsigned long cipher_id, |
| 922 |
unsigned long alg_mkey, unsigned long alg_auth, |
| 923 |
unsigned long alg_enc, unsigned long alg_mac, |
| 924 |
unsigned long alg_ssl, |
| 925 |
unsigned long algo_strength, |
| 926 |
int rule, int strength_bits, |
| 927 |
CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p) |
| 928 |
{
|
| 929 |
CIPHER_ORDER *head, *tail, *curr, *next, *last; |
| 930 |
const SSL_CIPHER *cp;
|
| 931 |
int reverse = 0; |
| 932 |
|
| 933 |
#ifdef CIPHER_DEBUG
|
| 934 |
printf("Applying rule %d with %08lx/%08lx/%08lx/%08lx/%08lx %08lx (%d)\n",
|
| 935 |
rule, alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, strength_bits); |
| 936 |
#endif
|
| 937 |
|
| 938 |
if (rule == CIPHER_DEL)
|
| 939 |
reverse = 1; /* needed to maintain sorting between currently deleted ciphers */ |
| 940 |
|
| 941 |
head = *head_p; |
| 942 |
tail = *tail_p; |
| 943 |
|
| 944 |
if (reverse)
|
| 945 |
{
|
| 946 |
next = tail; |
| 947 |
last = head; |
| 948 |
} |
| 949 |
else
|
| 950 |
{
|
| 951 |
next = head; |
| 952 |
last = tail; |
| 953 |
} |
| 954 |
|
| 955 |
curr = NULL;
|
| 956 |
for (;;)
|
| 957 |
{
|
| 958 |
if (curr == last) break; |
| 959 |
|
| 960 |
curr = next; |
| 961 |
|
| 962 |
if (curr == NULL) break; |
| 963 |
|
| 964 |
next = reverse ? curr->prev : curr->next; |
| 965 |
|
| 966 |
cp = curr->cipher; |
| 967 |
|
| 968 |
/*
|
| 969 |
* Selection criteria is either the value of strength_bits
|
| 970 |
* or the algorithms used.
|
| 971 |
*/
|
| 972 |
if (strength_bits >= 0) |
| 973 |
{
|
| 974 |
if (strength_bits != cp->strength_bits)
|
| 975 |
continue;
|
| 976 |
} |
| 977 |
else
|
| 978 |
{
|
| 979 |
#ifdef CIPHER_DEBUG
|
| 980 |
printf("\nName: %s:\nAlgo = %08lx/%08lx/%08lx/%08lx/%08lx Algo_strength = %08lx\n", cp->name, cp->algorithm_mkey, cp->algorithm_auth, cp->algorithm_enc, cp->algorithm_mac, cp->algorithm_ssl, cp->algo_strength);
|
| 981 |
#endif
|
| 982 |
|
| 983 |
if (alg_mkey && !(alg_mkey & cp->algorithm_mkey))
|
| 984 |
continue;
|
| 985 |
if (alg_auth && !(alg_auth & cp->algorithm_auth))
|
| 986 |
continue;
|
| 987 |
if (alg_enc && !(alg_enc & cp->algorithm_enc))
|
| 988 |
continue;
|
| 989 |
if (alg_mac && !(alg_mac & cp->algorithm_mac))
|
| 990 |
continue;
|
| 991 |
if (alg_ssl && !(alg_ssl & cp->algorithm_ssl))
|
| 992 |
continue;
|
| 993 |
if ((algo_strength & SSL_EXP_MASK) && !(algo_strength & SSL_EXP_MASK & cp->algo_strength))
|
| 994 |
continue;
|
| 995 |
if ((algo_strength & SSL_STRONG_MASK) && !(algo_strength & SSL_STRONG_MASK & cp->algo_strength))
|
| 996 |
continue;
|
| 997 |
} |
| 998 |
|
| 999 |
#ifdef CIPHER_DEBUG
|
| 1000 |
printf("Action = %d\n", rule);
|
| 1001 |
#endif
|
| 1002 |
|
| 1003 |
/* add the cipher if it has not been added yet. */
|
| 1004 |
if (rule == CIPHER_ADD)
|
| 1005 |
{
|
| 1006 |
/* reverse == 0 */
|
| 1007 |
if (!curr->active)
|
| 1008 |
{
|
| 1009 |
ll_append_tail(&head, curr, &tail); |
| 1010 |
curr->active = 1;
|
| 1011 |
} |
| 1012 |
} |
| 1013 |
/* Move the added cipher to this location */
|
| 1014 |
else if (rule == CIPHER_ORD) |
| 1015 |
{
|
| 1016 |
/* reverse == 0 */
|
| 1017 |
if (curr->active)
|
| 1018 |
{
|
| 1019 |
ll_append_tail(&head, curr, &tail); |
| 1020 |
} |
| 1021 |
} |
| 1022 |
else if (rule == CIPHER_DEL) |
| 1023 |
{
|
| 1024 |
/* reverse == 1 */
|
| 1025 |
if (curr->active)
|
| 1026 |
{
|
| 1027 |
/* most recently deleted ciphersuites get best positions
|
| 1028 |
* for any future CIPHER_ADD (note that the CIPHER_DEL loop
|
| 1029 |
* works in reverse to maintain the order) */
|
| 1030 |
ll_append_head(&head, curr, &tail); |
| 1031 |
curr->active = 0;
|
| 1032 |
} |
| 1033 |
} |
| 1034 |
else if (rule == CIPHER_KILL) |
| 1035 |
{
|
| 1036 |
/* reverse == 0 */
|
| 1037 |
if (head == curr)
|
| 1038 |
head = curr->next; |
| 1039 |
else
|
| 1040 |
curr->prev->next = curr->next; |
| 1041 |
if (tail == curr)
|
| 1042 |
tail = curr->prev; |
| 1043 |
curr->active = 0;
|
| 1044 |
if (curr->next != NULL) |
| 1045 |
curr->next->prev = curr->prev; |
| 1046 |
if (curr->prev != NULL) |
| 1047 |
curr->prev->next = curr->next; |
| 1048 |
curr->next = NULL;
|
| 1049 |
curr->prev = NULL;
|
| 1050 |
} |
| 1051 |
} |
| 1052 |
|
| 1053 |
*head_p = head; |
| 1054 |
*tail_p = tail; |
| 1055 |
} |
| 1056 |
|
| 1057 |
static int ssl_cipher_strength_sort(CIPHER_ORDER **head_p, |
| 1058 |
CIPHER_ORDER **tail_p) |
| 1059 |
{
|
| 1060 |
int max_strength_bits, i, *number_uses;
|
| 1061 |
CIPHER_ORDER *curr; |
| 1062 |
|
| 1063 |
/*
|
| 1064 |
* This routine sorts the ciphers with descending strength. The sorting
|
| 1065 |
* must keep the pre-sorted sequence, so we apply the normal sorting
|
| 1066 |
* routine as '+' movement to the end of the list.
|
| 1067 |
*/
|
| 1068 |
max_strength_bits = 0;
|
| 1069 |
curr = *head_p; |
| 1070 |
while (curr != NULL) |
| 1071 |
{
|
| 1072 |
if (curr->active &&
|
| 1073 |
(curr->cipher->strength_bits > max_strength_bits)) |
| 1074 |
max_strength_bits = curr->cipher->strength_bits; |
| 1075 |
curr = curr->next; |
| 1076 |
} |
| 1077 |
|
| 1078 |
number_uses = OPENSSL_malloc((max_strength_bits + 1) * sizeof(int)); |
| 1079 |
if (!number_uses)
|
| 1080 |
{
|
| 1081 |
SSLerr(SSL_F_SSL_CIPHER_STRENGTH_SORT,ERR_R_MALLOC_FAILURE); |
| 1082 |
return(0); |
| 1083 |
} |
| 1084 |
memset(number_uses, 0, (max_strength_bits + 1) * sizeof(int)); |
| 1085 |
|
| 1086 |
/*
|
| 1087 |
* Now find the strength_bits values actually used
|
| 1088 |
*/
|
| 1089 |
curr = *head_p; |
| 1090 |
while (curr != NULL) |
| 1091 |
{
|
| 1092 |
if (curr->active)
|
| 1093 |
number_uses[curr->cipher->strength_bits]++; |
| 1094 |
curr = curr->next; |
| 1095 |
} |
| 1096 |
/*
|
| 1097 |
* Go through the list of used strength_bits values in descending
|
| 1098 |
* order.
|
| 1099 |
*/
|
| 1100 |
for (i = max_strength_bits; i >= 0; i--) |
| 1101 |
if (number_uses[i] > 0) |
| 1102 |
ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ORD, i, head_p, tail_p); |
| 1103 |
|
| 1104 |
OPENSSL_free(number_uses); |
| 1105 |
return(1); |
| 1106 |
} |
| 1107 |
|
| 1108 |
static int ssl_cipher_process_rulestr(const char *rule_str, |
| 1109 |
CIPHER_ORDER **head_p, CIPHER_ORDER **tail_p, |
| 1110 |
const SSL_CIPHER **ca_list)
|
| 1111 |
{
|
| 1112 |
unsigned long alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength; |
| 1113 |
const char *l, *buf; |
| 1114 |
int j, multi, found, rule, retval, ok, buflen;
|
| 1115 |
unsigned long cipher_id = 0; |
| 1116 |
char ch;
|
| 1117 |
|
| 1118 |
retval = 1;
|
| 1119 |
l = rule_str; |
| 1120 |
for (;;)
|
| 1121 |
{
|
| 1122 |
ch = *l; |
| 1123 |
|
| 1124 |
if (ch == '\0') |
| 1125 |
break; /* done */ |
| 1126 |
if (ch == '-') |
| 1127 |
{ rule = CIPHER_DEL; l++; }
|
| 1128 |
else if (ch == '+') |
| 1129 |
{ rule = CIPHER_ORD; l++; }
|
| 1130 |
else if (ch == '!') |
| 1131 |
{ rule = CIPHER_KILL; l++; }
|
| 1132 |
else if (ch == '@') |
| 1133 |
{ rule = CIPHER_SPECIAL; l++; }
|
| 1134 |
else
|
| 1135 |
{ rule = CIPHER_ADD; }
|
| 1136 |
|
| 1137 |
if (ITEM_SEP(ch))
|
| 1138 |
{
|
| 1139 |
l++; |
| 1140 |
continue;
|
| 1141 |
} |
| 1142 |
|
| 1143 |
alg_mkey = 0;
|
| 1144 |
alg_auth = 0;
|
| 1145 |
alg_enc = 0;
|
| 1146 |
alg_mac = 0;
|
| 1147 |
alg_ssl = 0;
|
| 1148 |
algo_strength = 0;
|
| 1149 |
|
| 1150 |
for (;;)
|
| 1151 |
{
|
| 1152 |
ch = *l; |
| 1153 |
buf = l; |
| 1154 |
buflen = 0;
|
| 1155 |
#ifndef CHARSET_EBCDIC
|
| 1156 |
while ( ((ch >= 'A') && (ch <= 'Z')) || |
| 1157 |
((ch >= '0') && (ch <= '9')) || |
| 1158 |
((ch >= 'a') && (ch <= 'z')) || |
| 1159 |
(ch == '-') || (ch == '.')) |
| 1160 |
#else
|
| 1161 |
while ( isalnum(ch) || (ch == '-') || (ch == '.')) |
| 1162 |
#endif
|
| 1163 |
{
|
| 1164 |
ch = *(++l); |
| 1165 |
buflen++; |
| 1166 |
} |
| 1167 |
|
| 1168 |
if (buflen == 0) |
| 1169 |
{
|
| 1170 |
/*
|
| 1171 |
* We hit something we cannot deal with,
|
| 1172 |
* it is no command or separator nor
|
| 1173 |
* alphanumeric, so we call this an error.
|
| 1174 |
*/
|
| 1175 |
SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, |
| 1176 |
SSL_R_INVALID_COMMAND); |
| 1177 |
retval = found = 0;
|
| 1178 |
l++; |
| 1179 |
break;
|
| 1180 |
} |
| 1181 |
|
| 1182 |
if (rule == CIPHER_SPECIAL)
|
| 1183 |
{
|
| 1184 |
found = 0; /* unused -- avoid compiler warning */ |
| 1185 |
break; /* special treatment */ |
| 1186 |
} |
| 1187 |
|
| 1188 |
/* check for multi-part specification */
|
| 1189 |
if (ch == '+') |
| 1190 |
{
|
| 1191 |
multi=1;
|
| 1192 |
l++; |
| 1193 |
} |
| 1194 |
else
|
| 1195 |
multi=0;
|
| 1196 |
|
| 1197 |
/*
|
| 1198 |
* Now search for the cipher alias in the ca_list. Be careful
|
| 1199 |
* with the strncmp, because the "buflen" limitation
|
| 1200 |
* will make the rule "ADH:SOME" and the cipher
|
| 1201 |
* "ADH-MY-CIPHER" look like a match for buflen=3.
|
| 1202 |
* So additionally check whether the cipher name found
|
| 1203 |
* has the correct length. We can save a strlen() call:
|
| 1204 |
* just checking for the '\0' at the right place is
|
| 1205 |
* sufficient, we have to strncmp() anyway. (We cannot
|
| 1206 |
* use strcmp(), because buf is not '\0' terminated.)
|
| 1207 |
*/
|
| 1208 |
j = found = 0;
|
| 1209 |
cipher_id = 0;
|
| 1210 |
while (ca_list[j])
|
| 1211 |
{
|
| 1212 |
if (!strncmp(buf, ca_list[j]->name, buflen) &&
|
| 1213 |
(ca_list[j]->name[buflen] == '\0'))
|
| 1214 |
{
|
| 1215 |
found = 1;
|
| 1216 |
break;
|
| 1217 |
} |
| 1218 |
else
|
| 1219 |
j++; |
| 1220 |
} |
| 1221 |
|
| 1222 |
if (!found)
|
| 1223 |
break; /* ignore this entry */ |
| 1224 |
|
| 1225 |
if (ca_list[j]->algorithm_mkey)
|
| 1226 |
{
|
| 1227 |
if (alg_mkey)
|
| 1228 |
{
|
| 1229 |
alg_mkey &= ca_list[j]->algorithm_mkey; |
| 1230 |
if (!alg_mkey) { found = 0; break; } |
| 1231 |
} |
| 1232 |
else
|
| 1233 |
alg_mkey = ca_list[j]->algorithm_mkey; |
| 1234 |
} |
| 1235 |
|
| 1236 |
if (ca_list[j]->algorithm_auth)
|
| 1237 |
{
|
| 1238 |
if (alg_auth)
|
| 1239 |
{
|
| 1240 |
alg_auth &= ca_list[j]->algorithm_auth; |
| 1241 |
if (!alg_auth) { found = 0; break; } |
| 1242 |
} |
| 1243 |
else
|
| 1244 |
alg_auth = ca_list[j]->algorithm_auth; |
| 1245 |
} |
| 1246 |
|
| 1247 |
if (ca_list[j]->algorithm_enc)
|
| 1248 |
{
|
| 1249 |
if (alg_enc)
|
| 1250 |
{
|
| 1251 |
alg_enc &= ca_list[j]->algorithm_enc; |
| 1252 |
if (!alg_enc) { found = 0; break; } |
| 1253 |
} |
| 1254 |
else
|
| 1255 |
alg_enc = ca_list[j]->algorithm_enc; |
| 1256 |
} |
| 1257 |
|
| 1258 |
if (ca_list[j]->algorithm_mac)
|
| 1259 |
{
|
| 1260 |
if (alg_mac)
|
| 1261 |
{
|
| 1262 |
alg_mac &= ca_list[j]->algorithm_mac; |
| 1263 |
if (!alg_mac) { found = 0; break; } |
| 1264 |
} |
| 1265 |
else
|
| 1266 |
alg_mac = ca_list[j]->algorithm_mac; |
| 1267 |
} |
| 1268 |
|
| 1269 |
if (ca_list[j]->algo_strength & SSL_EXP_MASK)
|
| 1270 |
{
|
| 1271 |
if (algo_strength & SSL_EXP_MASK)
|
| 1272 |
{
|
| 1273 |
algo_strength &= (ca_list[j]->algo_strength & SSL_EXP_MASK) | ~SSL_EXP_MASK; |
| 1274 |
if (!(algo_strength & SSL_EXP_MASK)) { found = 0; break; } |
| 1275 |
} |
| 1276 |
else
|
| 1277 |
algo_strength |= ca_list[j]->algo_strength & SSL_EXP_MASK; |
| 1278 |
} |
| 1279 |
|
| 1280 |
if (ca_list[j]->algo_strength & SSL_STRONG_MASK)
|
| 1281 |
{
|
| 1282 |
if (algo_strength & SSL_STRONG_MASK)
|
| 1283 |
{
|
| 1284 |
algo_strength &= (ca_list[j]->algo_strength & SSL_STRONG_MASK) | ~SSL_STRONG_MASK; |
| 1285 |
if (!(algo_strength & SSL_STRONG_MASK)) { found = 0; break; } |
| 1286 |
} |
| 1287 |
else
|
| 1288 |
algo_strength |= ca_list[j]->algo_strength & SSL_STRONG_MASK; |
| 1289 |
} |
| 1290 |
|
| 1291 |
if (ca_list[j]->valid)
|
| 1292 |
{
|
| 1293 |
/* explicit ciphersuite found; its protocol version
|
| 1294 |
* does not become part of the search pattern!*/
|
| 1295 |
|
| 1296 |
cipher_id = ca_list[j]->id; |
| 1297 |
} |
| 1298 |
else
|
| 1299 |
{
|
| 1300 |
/* not an explicit ciphersuite; only in this case, the
|
| 1301 |
* protocol version is considered part of the search pattern */
|
| 1302 |
|
| 1303 |
if (ca_list[j]->algorithm_ssl)
|
| 1304 |
{
|
| 1305 |
if (alg_ssl)
|
| 1306 |
{
|
| 1307 |
alg_ssl &= ca_list[j]->algorithm_ssl; |
| 1308 |
if (!alg_ssl) { found = 0; break; } |
| 1309 |
} |
| 1310 |
else
|
| 1311 |
alg_ssl = ca_list[j]->algorithm_ssl; |
| 1312 |
} |
| 1313 |
} |
| 1314 |
|
| 1315 |
if (!multi) break; |
| 1316 |
} |
| 1317 |
|
| 1318 |
/*
|
| 1319 |
* Ok, we have the rule, now apply it
|
| 1320 |
*/
|
| 1321 |
if (rule == CIPHER_SPECIAL)
|
| 1322 |
{ /* special command */
|
| 1323 |
ok = 0;
|
| 1324 |
if ((buflen == 8) && |
| 1325 |
!strncmp(buf, "STRENGTH", 8)) |
| 1326 |
ok = ssl_cipher_strength_sort(head_p, tail_p); |
| 1327 |
else
|
| 1328 |
SSLerr(SSL_F_SSL_CIPHER_PROCESS_RULESTR, |
| 1329 |
SSL_R_INVALID_COMMAND); |
| 1330 |
if (ok == 0) |
| 1331 |
retval = 0;
|
| 1332 |
/*
|
| 1333 |
* We do not support any "multi" options
|
| 1334 |
* together with "@", so throw away the
|
| 1335 |
* rest of the command, if any left, until
|
| 1336 |
* end or ':' is found.
|
| 1337 |
*/
|
| 1338 |
while ((*l != '\0') && !ITEM_SEP(*l)) |
| 1339 |
l++; |
| 1340 |
} |
| 1341 |
else if (found) |
| 1342 |
{
|
| 1343 |
ssl_cipher_apply_rule(cipher_id, |
| 1344 |
alg_mkey, alg_auth, alg_enc, alg_mac, alg_ssl, algo_strength, |
| 1345 |
rule, -1, head_p, tail_p);
|
| 1346 |
} |
| 1347 |
else
|
| 1348 |
{
|
| 1349 |
while ((*l != '\0') && !ITEM_SEP(*l)) |
| 1350 |
l++; |
| 1351 |
} |
| 1352 |
if (*l == '\0') break; /* done */ |
| 1353 |
} |
| 1354 |
|
| 1355 |
return(retval);
|
| 1356 |
} |
| 1357 |
|
| 1358 |
STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *ssl_method,
|
| 1359 |
STACK_OF(SSL_CIPHER) **cipher_list, |
| 1360 |
STACK_OF(SSL_CIPHER) **cipher_list_by_id, |
| 1361 |
const char *rule_str) |
| 1362 |
{
|
| 1363 |
int ok, num_of_ciphers, num_of_alias_max, num_of_group_aliases;
|
| 1364 |
unsigned long disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl; |
| 1365 |
STACK_OF(SSL_CIPHER) *cipherstack, *tmp_cipher_list; |
| 1366 |
const char *rule_p; |
| 1367 |
CIPHER_ORDER *co_list = NULL, *head = NULL, *tail = NULL, *curr; |
| 1368 |
const SSL_CIPHER **ca_list = NULL; |
| 1369 |
|
| 1370 |
/*
|
| 1371 |
* Return with error if nothing to do.
|
| 1372 |
*/
|
| 1373 |
if (rule_str == NULL || cipher_list == NULL || cipher_list_by_id == NULL) |
| 1374 |
return NULL; |
| 1375 |
|
| 1376 |
/*
|
| 1377 |
* To reduce the work to do we only want to process the compiled
|
| 1378 |
* in algorithms, so we first get the mask of disabled ciphers.
|
| 1379 |
*/
|
| 1380 |
ssl_cipher_get_disabled(&disabled_mkey, &disabled_auth, &disabled_enc, &disabled_mac, &disabled_ssl); |
| 1381 |
|
| 1382 |
/*
|
| 1383 |
* Now we have to collect the available ciphers from the compiled
|
| 1384 |
* in ciphers. We cannot get more than the number compiled in, so
|
| 1385 |
* it is used for allocation.
|
| 1386 |
*/
|
| 1387 |
num_of_ciphers = ssl_method->num_ciphers(); |
| 1388 |
#ifdef KSSL_DEBUG
|
| 1389 |
printf("ssl_create_cipher_list() for %d ciphers\n", num_of_ciphers);
|
| 1390 |
#endif /* KSSL_DEBUG */ |
| 1391 |
co_list = (CIPHER_ORDER *)OPENSSL_malloc(sizeof(CIPHER_ORDER) * num_of_ciphers);
|
| 1392 |
if (co_list == NULL) |
| 1393 |
{
|
| 1394 |
SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); |
| 1395 |
return(NULL); /* Failure */ |
| 1396 |
} |
| 1397 |
|
| 1398 |
ssl_cipher_collect_ciphers(ssl_method, num_of_ciphers, |
| 1399 |
disabled_mkey, disabled_auth, disabled_enc, disabled_mac, disabled_ssl, |
| 1400 |
co_list, &head, &tail); |
| 1401 |
|
| 1402 |
|
| 1403 |
/* Now arrange all ciphers by preference: */
|
| 1404 |
|
| 1405 |
/* Everything else being equal, prefer ephemeral ECDH over other key exchange mechanisms */
|
| 1406 |
ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); |
| 1407 |
ssl_cipher_apply_rule(0, SSL_kEECDH, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); |
| 1408 |
|
| 1409 |
/* AES is our preferred symmetric cipher */
|
| 1410 |
ssl_cipher_apply_rule(0, 0, 0, SSL_AES, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); |
| 1411 |
|
| 1412 |
/* Temporarily enable everything else for sorting */
|
| 1413 |
ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_ADD, -1, &head, &tail); |
| 1414 |
|
| 1415 |
/* Low priority for MD5 */
|
| 1416 |
ssl_cipher_apply_rule(0, 0, 0, 0, SSL_MD5, 0, 0, CIPHER_ORD, -1, &head, &tail); |
| 1417 |
|
| 1418 |
/* Move anonymous ciphers to the end. Usually, these will remain disabled.
|
| 1419 |
* (For applications that allow them, they aren't too bad, but we prefer
|
| 1420 |
* authenticated ciphers.) */
|
| 1421 |
ssl_cipher_apply_rule(0, 0, SSL_aNULL, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); |
| 1422 |
|
| 1423 |
/* Move ciphers without forward secrecy to the end */
|
| 1424 |
ssl_cipher_apply_rule(0, 0, SSL_aECDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); |
| 1425 |
/* ssl_cipher_apply_rule(0, 0, SSL_aDH, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); */
|
| 1426 |
ssl_cipher_apply_rule(0, SSL_kRSA, 0, 0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); |
| 1427 |
ssl_cipher_apply_rule(0, SSL_kPSK, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); |
| 1428 |
ssl_cipher_apply_rule(0, SSL_kKRB5, 0,0, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); |
| 1429 |
|
| 1430 |
/* RC4 is sort-of broken -- move the the end */
|
| 1431 |
ssl_cipher_apply_rule(0, 0, 0, SSL_RC4, 0, 0, 0, CIPHER_ORD, -1, &head, &tail); |
| 1432 |
|
| 1433 |
/* Now sort by symmetric encryption strength. The above ordering remains
|
| 1434 |
* in force within each class */
|
| 1435 |
if (!ssl_cipher_strength_sort(&head, &tail))
|
| 1436 |
{
|
| 1437 |
OPENSSL_free(co_list); |
| 1438 |
return NULL; |
| 1439 |
} |
| 1440 |
|
| 1441 |
/* Now disable everything (maintaining the ordering!) */
|
| 1442 |
ssl_cipher_apply_rule(0, 0, 0, 0, 0, 0, 0, CIPHER_DEL, -1, &head, &tail); |
| 1443 |
|
| 1444 |
|
| 1445 |
/*
|
| 1446 |
* We also need cipher aliases for selecting based on the rule_str.
|
| 1447 |
* There might be two types of entries in the rule_str: 1) names
|
| 1448 |
* of ciphers themselves 2) aliases for groups of ciphers.
|
| 1449 |
* For 1) we need the available ciphers and for 2) the cipher
|
| 1450 |
* groups of cipher_aliases added together in one list (otherwise
|
| 1451 |
* we would be happy with just the cipher_aliases table).
|
| 1452 |
*/
|
| 1453 |
num_of_group_aliases = sizeof(cipher_aliases) / sizeof(SSL_CIPHER); |
| 1454 |
num_of_alias_max = num_of_ciphers + num_of_group_aliases + 1;
|
| 1455 |
ca_list = OPENSSL_malloc(sizeof(SSL_CIPHER *) * num_of_alias_max);
|
| 1456 |
if (ca_list == NULL) |
| 1457 |
{
|
| 1458 |
OPENSSL_free(co_list); |
| 1459 |
SSLerr(SSL_F_SSL_CREATE_CIPHER_LIST,ERR_R_MALLOC_FAILURE); |
| 1460 |
return(NULL); /* Failure */ |
| 1461 |
} |
| 1462 |
ssl_cipher_collect_aliases(ca_list, num_of_group_aliases, |
| 1463 |
disabled_mkey, disabled_auth, disabled_enc, |
| 1464 |
disabled_mac, disabled_ssl, head); |
| 1465 |
|
| 1466 |
/*
|
| 1467 |
* If the rule_string begins with DEFAULT, apply the default rule
|
| 1468 |
* before using the (possibly available) additional rules.
|
| 1469 |
*/
|
| 1470 |
ok = 1;
|
| 1471 |
rule_p = rule_str; |
| 1472 |
if (strncmp(rule_str,"DEFAULT",7) == 0) |
| 1473 |
{
|
| 1474 |
ok = ssl_cipher_process_rulestr(SSL_DEFAULT_CIPHER_LIST, |
| 1475 |
&head, &tail, ca_list); |
| 1476 |
rule_p += 7;
|
| 1477 |
if (*rule_p == ':') |
| 1478 |
rule_p++; |
| 1479 |
} |
| 1480 |
|
| 1481 |
if (ok && (strlen(rule_p) > 0)) |
| 1482 |
ok = ssl_cipher_process_rulestr(rule_p, &head, &tail, ca_list); |
| 1483 |
|
| 1484 |
OPENSSL_free((void *)ca_list); /* Not needed anymore */ |
| 1485 |
|
| 1486 |
if (!ok)
|
| 1487 |
{ /* Rule processing failure */
|
| 1488 |
OPENSSL_free(co_list); |
| 1489 |
return(NULL); |
| 1490 |
} |
| 1491 |
|
| 1492 |
/*
|
| 1493 |
* Allocate new "cipherstack" for the result, return with error
|
| 1494 |
* if we cannot get one.
|
| 1495 |
*/
|
| 1496 |
if ((cipherstack = sk_SSL_CIPHER_new_null()) == NULL) |
| 1497 |
{
|
| 1498 |
OPENSSL_free(co_list); |
| 1499 |
return(NULL); |
| 1500 |
} |
| 1501 |
|
| 1502 |
/*
|
| 1503 |
* The cipher selection for the list is done. The ciphers are added
|
| 1504 |
* to the resulting precedence to the STACK_OF(SSL_CIPHER).
|
| 1505 |
*/
|
| 1506 |
for (curr = head; curr != NULL; curr = curr->next) |
| 1507 |
{
|
| 1508 |
#ifdef OPENSSL_FIPS
|
| 1509 |
if (curr->active && (!FIPS_mode() || curr->cipher->algo_strength & SSL_FIPS))
|
| 1510 |
#else
|
| 1511 |
if (curr->active)
|
| 1512 |
#endif
|
| 1513 |
{
|
| 1514 |
sk_SSL_CIPHER_push(cipherstack, curr->cipher); |
| 1515 |
#ifdef CIPHER_DEBUG
|
| 1516 |
printf("<%s>\n",curr->cipher->name);
|
| 1517 |
#endif
|
| 1518 |
} |
| 1519 |
} |
| 1520 |
OPENSSL_free(co_list); /* Not needed any longer */
|
| 1521 |
|
| 1522 |
tmp_cipher_list = sk_SSL_CIPHER_dup(cipherstack); |
| 1523 |
if (tmp_cipher_list == NULL) |
| 1524 |
{
|
| 1525 |
sk_SSL_CIPHER_free(cipherstack); |
| 1526 |
return NULL; |
| 1527 |
} |
| 1528 |
if (*cipher_list != NULL) |
| 1529 |
sk_SSL_CIPHER_free(*cipher_list); |
| 1530 |
*cipher_list = cipherstack; |
| 1531 |
if (*cipher_list_by_id != NULL) |
| 1532 |
sk_SSL_CIPHER_free(*cipher_list_by_id); |
| 1533 |
*cipher_list_by_id = tmp_cipher_list; |
| 1534 |
(void)sk_SSL_CIPHER_set_cmp_func(*cipher_list_by_id,ssl_cipher_ptr_id_cmp);
|
| 1535 |
|
| 1536 |
sk_SSL_CIPHER_sort(*cipher_list_by_id); |
| 1537 |
return(cipherstack);
|
| 1538 |
} |
| 1539 |
|
| 1540 |
char *SSL_CIPHER_description(const SSL_CIPHER *cipher, char *buf, int len) |
| 1541 |
{
|
| 1542 |
int is_export,pkl,kl;
|
| 1543 |
const char *ver,*exp_str; |
| 1544 |
const char *kx,*au,*enc,*mac; |
| 1545 |
unsigned long alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl,alg2; |
| 1546 |
#ifdef KSSL_DEBUG
|
| 1547 |
static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s AL=%lx/%lx/%lx/%lx/%lx\n"; |
| 1548 |
#else
|
| 1549 |
static const char *format="%-23s %s Kx=%-8s Au=%-4s Enc=%-9s Mac=%-4s%s\n"; |
| 1550 |
#endif /* KSSL_DEBUG */ |
| 1551 |
|
| 1552 |
alg_mkey = cipher->algorithm_mkey; |
| 1553 |
alg_auth = cipher->algorithm_auth; |
| 1554 |
alg_enc = cipher->algorithm_enc; |
| 1555 |
alg_mac = cipher->algorithm_mac; |
| 1556 |
alg_ssl = cipher->algorithm_ssl; |
| 1557 |
|
| 1558 |
alg2=cipher->algorithm2; |
| 1559 |
|
| 1560 |
is_export=SSL_C_IS_EXPORT(cipher); |
| 1561 |
pkl=SSL_C_EXPORT_PKEYLENGTH(cipher); |
| 1562 |
kl=SSL_C_EXPORT_KEYLENGTH(cipher); |
| 1563 |
exp_str=is_export?" export":""; |
| 1564 |
|
| 1565 |
if (alg_ssl & SSL_SSLV2)
|
| 1566 |
ver="SSLv2";
|
| 1567 |
else if (alg_ssl & SSL_SSLV3) |
| 1568 |
ver="SSLv3";
|
| 1569 |
else if (alg_ssl & SSL_TLSV1_2) |
| 1570 |
ver="TLSv1.2";
|
| 1571 |
else
|
| 1572 |
ver="unknown";
|
| 1573 |
|
| 1574 |
switch (alg_mkey)
|
| 1575 |
{
|
| 1576 |
case SSL_kRSA:
|
| 1577 |
kx=is_export?(pkl == 512 ? "RSA(512)" : "RSA(1024)"):"RSA"; |
| 1578 |
break;
|
| 1579 |
case SSL_kDHr:
|
| 1580 |
kx="DH/RSA";
|
| 1581 |
break;
|
| 1582 |
case SSL_kDHd:
|
| 1583 |
kx="DH/DSS";
|
| 1584 |
break;
|
| 1585 |
case SSL_kKRB5:
|
| 1586 |
kx="KRB5";
|
| 1587 |
break;
|
| 1588 |
case SSL_kEDH:
|
| 1589 |
kx=is_export?(pkl == 512 ? "DH(512)" : "DH(1024)"):"DH"; |
| 1590 |
break;
|
| 1591 |
case SSL_kECDHr:
|
| 1592 |
kx="ECDH/RSA";
|
| 1593 |
break;
|
| 1594 |
case SSL_kECDHe:
|
| 1595 |
kx="ECDH/ECDSA";
|
| 1596 |
break;
|
| 1597 |
case SSL_kEECDH:
|
| 1598 |
kx="ECDH";
|
| 1599 |
break;
|
| 1600 |
case SSL_kPSK:
|
| 1601 |
kx="PSK";
|
| 1602 |
break;
|
| 1603 |
case SSL_kSRP:
|
| 1604 |
kx="SRP";
|
| 1605 |
break;
|
| 1606 |
case SSL_kGOST:
|
| 1607 |
kx="GOST";
|
| 1608 |
break;
|
| 1609 |
default:
|
| 1610 |
kx="unknown";
|
| 1611 |
} |
| 1612 |
|
| 1613 |
switch (alg_auth)
|
| 1614 |
{
|
| 1615 |
case SSL_aRSA:
|
| 1616 |
au="RSA";
|
| 1617 |
break;
|
| 1618 |
case SSL_aDSS:
|
| 1619 |
au="DSS";
|
| 1620 |
break;
|
| 1621 |
case SSL_aDH:
|
| 1622 |
au="DH";
|
| 1623 |
break;
|
| 1624 |
case SSL_aKRB5:
|
| 1625 |
au="KRB5";
|
| 1626 |
break;
|
| 1627 |
case SSL_aECDH:
|
| 1628 |
au="ECDH";
|
| 1629 |
break;
|
| 1630 |
case SSL_aNULL:
|
| 1631 |
au="None";
|
| 1632 |
break;
|
| 1633 |
case SSL_aECDSA:
|
| 1634 |
au="ECDSA";
|
| 1635 |
break;
|
| 1636 |
case SSL_aPSK:
|
| 1637 |
au="PSK";
|
| 1638 |
break;
|
| 1639 |
case SSL_aSRP:
|
| 1640 |
au="SRP";
|
| 1641 |
break;
|
| 1642 |
case SSL_aGOST94:
|
| 1643 |
au="GOST94";
|
| 1644 |
break;
|
| 1645 |
case SSL_aGOST01:
|
| 1646 |
au="GOST01";
|
| 1647 |
break;
|
| 1648 |
default:
|
| 1649 |
au="unknown";
|
| 1650 |
break;
|
| 1651 |
} |
| 1652 |
|
| 1653 |
switch (alg_enc)
|
| 1654 |
{
|
| 1655 |
case SSL_DES:
|
| 1656 |
enc=(is_export && kl == 5)?"DES(40)":"DES(56)"; |
| 1657 |
break;
|
| 1658 |
case SSL_3DES:
|
| 1659 |
enc="3DES(168)";
|
| 1660 |
break;
|
| 1661 |
case SSL_RC4:
|
| 1662 |
enc=is_export?(kl == 5 ? "RC4(40)" : "RC4(56)") |
| 1663 |
:((alg2&SSL2_CF_8_BYTE_ENC)?"RC4(64)":"RC4(128)"); |
| 1664 |
break;
|
| 1665 |
case SSL_RC2:
|
| 1666 |
enc=is_export?(kl == 5 ? "RC2(40)" : "RC2(56)"):"RC2(128)"; |
| 1667 |
break;
|
| 1668 |
case SSL_IDEA:
|
| 1669 |
enc="IDEA(128)";
|
| 1670 |
break;
|
| 1671 |
case SSL_eNULL:
|
| 1672 |
enc="None";
|
| 1673 |
break;
|
| 1674 |
case SSL_AES128:
|
| 1675 |
enc="AES(128)";
|
| 1676 |
break;
|
| 1677 |
case SSL_AES256:
|
| 1678 |
enc="AES(256)";
|
| 1679 |
break;
|
| 1680 |
case SSL_AES128GCM:
|
| 1681 |
enc="AESGCM(128)";
|
| 1682 |
break;
|
| 1683 |
case SSL_AES256GCM:
|
| 1684 |
enc="AESGCM(256)";
|
| 1685 |
break;
|
| 1686 |
case SSL_CAMELLIA128:
|
| 1687 |
enc="Camellia(128)";
|
| 1688 |
break;
|
| 1689 |
case SSL_CAMELLIA256:
|
| 1690 |
enc="Camellia(256)";
|
| 1691 |
break;
|
| 1692 |
case SSL_SEED:
|
| 1693 |
enc="SEED(128)";
|
| 1694 |
break;
|
| 1695 |
case SSL_eGOST2814789CNT:
|
| 1696 |
enc="GOST89(256)";
|
| 1697 |
break;
|
| 1698 |
default:
|
| 1699 |
enc="unknown";
|
| 1700 |
break;
|
| 1701 |
} |
| 1702 |
|
| 1703 |
switch (alg_mac)
|
| 1704 |
{
|
| 1705 |
case SSL_MD5:
|
| 1706 |
mac="MD5";
|
| 1707 |
break;
|
| 1708 |
case SSL_SHA1:
|
| 1709 |
mac="SHA1";
|
| 1710 |
break;
|
| 1711 |
case SSL_SHA256:
|
| 1712 |
mac="SHA256";
|
| 1713 |
break;
|
| 1714 |
case SSL_SHA384:
|
| 1715 |
mac="SHA384";
|
| 1716 |
break;
|
| 1717 |
case SSL_AEAD:
|
| 1718 |
mac="AEAD";
|
| 1719 |
break;
|
| 1720 |
case SSL_GOST89MAC:
|
| 1721 |
mac="GOST89";
|
| 1722 |
break;
|
| 1723 |
case SSL_GOST94:
|
| 1724 |
mac="GOST94";
|
| 1725 |
break;
|
| 1726 |
default:
|
| 1727 |
mac="unknown";
|
| 1728 |
break;
|
| 1729 |
} |
| 1730 |
|
| 1731 |
if (buf == NULL) |
| 1732 |
{
|
| 1733 |
len=128;
|
| 1734 |
buf=OPENSSL_malloc(len); |
| 1735 |
if (buf == NULL) return("OPENSSL_malloc Error"); |
| 1736 |
} |
| 1737 |
else if (len < 128) |
| 1738 |
return("Buffer too small"); |
| 1739 |
|
| 1740 |
#ifdef KSSL_DEBUG
|
| 1741 |
BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str,alg_mkey,alg_auth,alg_enc,alg_mac,alg_ssl); |
| 1742 |
#else
|
| 1743 |
BIO_snprintf(buf,len,format,cipher->name,ver,kx,au,enc,mac,exp_str); |
| 1744 |
#endif /* KSSL_DEBUG */ |
| 1745 |
return(buf);
|
| 1746 |
} |
| 1747 |
|
| 1748 |
char *SSL_CIPHER_get_version(const SSL_CIPHER *c) |
| 1749 |
{
|
| 1750 |
int i;
|
| 1751 |
|
| 1752 |
if (c == NULL) return("(NONE)"); |
| 1753 |
i=(int)(c->id>>24L); |
| 1754 |
if (i == 3) |
| 1755 |
return("TLSv1/SSLv3"); |
| 1756 |
else if (i == 2) |
| 1757 |
return("SSLv2"); |
| 1758 |
else
|
| 1759 |
return("unknown"); |
| 1760 |
} |
| 1761 |
|
| 1762 |
/* return the actual cipher being used */
|
| 1763 |
const char *SSL_CIPHER_get_name(const SSL_CIPHER *c) |
| 1764 |
{
|
| 1765 |
if (c != NULL) |
| 1766 |
return(c->name);
|
| 1767 |
return("(NONE)"); |
| 1768 |
} |
| 1769 |
|
| 1770 |
/* number of bits for symmetric cipher */
|
| 1771 |
int SSL_CIPHER_get_bits(const SSL_CIPHER *c, int *alg_bits) |
| 1772 |
{
|
| 1773 |
int ret=0; |
| 1774 |
|
| 1775 |
if (c != NULL) |
| 1776 |
{
|
| 1777 |
if (alg_bits != NULL) *alg_bits = c->alg_bits; |
| 1778 |
ret = c->strength_bits; |
| 1779 |
} |
| 1780 |
return(ret);
|
| 1781 |
} |
| 1782 |
|
| 1783 |
unsigned long SSL_CIPHER_get_id(const SSL_CIPHER *c) |
| 1784 |
{
|
| 1785 |
return c->id;
|
| 1786 |
} |
| 1787 |
|
| 1788 |
SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n)
|
| 1789 |
{
|
| 1790 |
SSL_COMP *ctmp; |
| 1791 |
int i,nn;
|
| 1792 |
|
| 1793 |
if ((n == 0) || (sk == NULL)) return(NULL); |
| 1794 |
nn=sk_SSL_COMP_num(sk); |
| 1795 |
for (i=0; i<nn; i++) |
| 1796 |
{
|
| 1797 |
ctmp=sk_SSL_COMP_value(sk,i); |
| 1798 |
if (ctmp->id == n)
|
| 1799 |
return(ctmp);
|
| 1800 |
} |
| 1801 |
return(NULL); |
| 1802 |
} |
| 1803 |
|
| 1804 |
#ifdef OPENSSL_NO_COMP
|
| 1805 |
void *SSL_COMP_get_compression_methods(void) |
| 1806 |
{
|
| 1807 |
return NULL; |
| 1808 |
} |
| 1809 |
int SSL_COMP_add_compression_method(int id, void *cm) |
| 1810 |
{
|
| 1811 |
return 1; |
| 1812 |
} |
| 1813 |
|
| 1814 |
const char *SSL_COMP_get_name(const void *comp) |
| 1815 |
{
|
| 1816 |
return NULL; |
| 1817 |
} |
| 1818 |
#else
|
| 1819 |
STACK_OF(SSL_COMP) *SSL_COMP_get_compression_methods(void)
|
| 1820 |
{
|
| 1821 |
load_builtin_compressions(); |
| 1822 |
return(ssl_comp_methods);
|
| 1823 |
} |
| 1824 |
|
| 1825 |
int SSL_COMP_add_compression_method(int id, COMP_METHOD *cm) |
| 1826 |
{
|
| 1827 |
SSL_COMP *comp; |
| 1828 |
|
| 1829 |
if (cm == NULL || cm->type == NID_undef) |
| 1830 |
return 1; |
| 1831 |
|
| 1832 |
/* According to draft-ietf-tls-compression-04.txt, the
|
| 1833 |
compression number ranges should be the following:
|
| 1834 |
|
| 1835 |
0 to 63: methods defined by the IETF
|
| 1836 |
64 to 192: external party methods assigned by IANA
|
| 1837 |
193 to 255: reserved for private use */
|
| 1838 |
if (id < 193 || id > 255) |
| 1839 |
{
|
| 1840 |
SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_COMPRESSION_ID_NOT_WITHIN_PRIVATE_RANGE); |
| 1841 |
return 0; |
| 1842 |
} |
| 1843 |
|
| 1844 |
MemCheck_off(); |
| 1845 |
comp=(SSL_COMP *)OPENSSL_malloc(sizeof(SSL_COMP));
|
| 1846 |
comp->id=id; |
| 1847 |
comp->method=cm; |
| 1848 |
load_builtin_compressions(); |
| 1849 |
if (ssl_comp_methods
|
| 1850 |
&& sk_SSL_COMP_find(ssl_comp_methods,comp) >= 0)
|
| 1851 |
{
|
| 1852 |
OPENSSL_free(comp); |
| 1853 |
MemCheck_on(); |
| 1854 |
SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,SSL_R_DUPLICATE_COMPRESSION_ID); |
| 1855 |
return(1); |
| 1856 |
} |
| 1857 |
else if ((ssl_comp_methods == NULL) |
| 1858 |
|| !sk_SSL_COMP_push(ssl_comp_methods,comp)) |
| 1859 |
{
|
| 1860 |
OPENSSL_free(comp); |
| 1861 |
MemCheck_on(); |
| 1862 |
SSLerr(SSL_F_SSL_COMP_ADD_COMPRESSION_METHOD,ERR_R_MALLOC_FAILURE); |
| 1863 |
return(1); |
| 1864 |
} |
| 1865 |
else
|
| 1866 |
{
|
| 1867 |
MemCheck_on(); |
| 1868 |
return(0); |
| 1869 |
} |
| 1870 |
} |
| 1871 |
|
| 1872 |
const char *SSL_COMP_get_name(const COMP_METHOD *comp) |
| 1873 |
{
|
| 1874 |
if (comp)
|
| 1875 |
return comp->name;
|
| 1876 |
return NULL; |
| 1877 |
} |
| 1878 |
|
| 1879 |
#endif
|