evgeny
38c9f229bc
- u_async.c: process immediate_queue BEFORE epoll_wait in uasync_poll - stcp_link.c: defensive NULL etcp_conn/etcp_link in stcp_link_close - utun_instance.c: move stcp_server_list_destroy_all to Phase J (before ETCP), add deferred drain in both Phase J and L - stcp.h/c: STCP_HS_ENC_CLIENT 6→38, STCP_HS_ENC_SERVER 7→39, exchange ed25519_pubkey in both handshake directions - etcp_connections.c: copy peer_ed25519 from STCP to ETCP_CONN in etcp_link_enter_ready_tcp; guard link->etcp in tcp_link_close_cb - chat_sync.c: fix lk->conn NULL dereference for TCP links - test_stcp.c: update stcp_server_create/stcp_client_connect callsites - tools/chat_tcp_test: change transport udp→tcp
132 lines
5.4 KiB
C
132 lines
5.4 KiB
C
/* ecc_dh.h - TinyCrypt interface to EC-DH implementation */
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/*
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* Copyright (c) 2014, Kenneth MacKay
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* 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 are met:
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*
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* * Redistributions of source code must retain the above copyright notice, this
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* list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND 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 COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, 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 OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/* Copyright (C) 2017 by Intel Corporation, 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 are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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*
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* - 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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*
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* - Neither the name of Intel Corporation nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND 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 COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, 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 OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/**
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* @file
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* @brief -- Interface to EC-DH implementation.
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*
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* Overview: This software is an implementation of EC-DH. This implementation
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* uses curve NIST p-256.
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*
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* Security: The curve NIST p-256 provides approximately 128 bits of security.
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*/
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#ifndef __TC_ECC_DH_H__
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#define __TC_ECC_DH_H__
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#include <tinycrypt/ecc.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/**
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* @brief Create a public/private key pair.
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* @return returns TC_CRYPTO_SUCCESS (1) if the key pair was generated successfully
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* returns TC_CRYPTO_FAIL (0) if error while generating key pair
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*
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* @param p_public_key OUT -- Will be filled in with the public key. Must be at
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* least 2 * the curve size (in bytes) long. For curve secp256r1, p_public_key
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* must be 64 bytes long.
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* @param p_private_key OUT -- Will be filled in with the private key. Must be as
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* long as the curve order (for secp256r1, p_private_key must be 32 bytes long).
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*
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* @note side-channel countermeasure: algorithm strengthened against timing
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* attack.
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* @warning A cryptographically-secure PRNG function must be set (using
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* uECC_set_rng()) before calling uECC_make_key().
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*/
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int uECC_make_key(uint8_t *p_public_key, uint8_t *p_private_key, uECC_Curve curve);
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#ifdef ENABLE_TESTS
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/**
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* @brief Create a public/private key pair given a specific d.
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*
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* @note THIS FUNCTION SHOULD BE CALLED ONLY FOR TEST PURPOSES. Refer to
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* uECC_make_key() function for real applications.
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*/
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int uECC_make_key_with_d(uint8_t *p_public_key, uint8_t *p_private_key,
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unsigned int *d, uECC_Curve curve);
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#endif
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/**
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* @brief Compute a shared secret given your secret key and someone else's
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* public key.
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* @return returns TC_CRYPTO_SUCCESS (1) if the shared secret was computed successfully
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* returns TC_CRYPTO_FAIL (0) otherwise
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*
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* @param p_secret OUT -- Will be filled in with the shared secret value. Must be
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* the same size as the curve size (for curve secp256r1, secret must be 32 bytes
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* long.
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* @param p_public_key IN -- The public key of the remote party.
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* @param p_private_key IN -- Your private key.
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*
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* @warning It is recommended to use the output of uECC_shared_secret() as the
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* input of a recommended Key Derivation Function (see NIST SP 800-108) in
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* order to produce a cryptographically secure symmetric key.
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*/
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int uECC_shared_secret(const uint8_t *p_public_key, const uint8_t *p_private_key,
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uint8_t *p_secret, uECC_Curve curve);
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#ifdef __cplusplus
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}
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#endif
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#endif /* __TC_ECC_DH_H__ */
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