100 lines
3.8 KiB
C
100 lines
3.8 KiB
C
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/* $OpenBSD: ech_locl.h,v 1.6 2019/09/05 16:12:36 jsing Exp $ */
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/* ====================================================================
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* Copyright (c) 2000-2005 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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* licensing@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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#ifndef HEADER_ECH_LOCL_H
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#define HEADER_ECH_LOCL_H
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#include <openssl/ecdh.h>
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__BEGIN_HIDDEN_DECLS
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struct ecdh_method {
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const char *name;
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int (*compute_key)(void *key, size_t outlen, const EC_POINT *pub_key, EC_KEY *ecdh,
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void *(*KDF)(const void *in, size_t inlen, void *out, size_t *outlen));
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int flags;
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char *app_data;
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};
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/* If this flag is set the ECDH method is FIPS compliant and can be used
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* in FIPS mode. This is set in the validated module method. If an
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* application sets this flag in its own methods it is its responsibility
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* to ensure the result is compliant.
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*/
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#define ECDH_FLAG_FIPS_METHOD 0x1
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typedef struct ecdh_data_st {
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/* EC_KEY_METH_DATA part */
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int (*init)(EC_KEY *);
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/* method specific part */
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ENGINE *engine;
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int flags;
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const ECDH_METHOD *meth;
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CRYPTO_EX_DATA ex_data;
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} ECDH_DATA;
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ECDH_DATA *ecdh_check(EC_KEY *);
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/*
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* ECDH Key Derivation Function as defined in ANSI X9.63.
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*/
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int ecdh_KDF_X9_63(unsigned char *out, size_t outlen, const unsigned char *Z,
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size_t Zlen, const unsigned char *sinfo, size_t sinfolen, const EVP_MD *md);
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__END_HIDDEN_DECLS
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#endif /* HEADER_ECH_LOCL_H */
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