mirror of
https://github.com/zephyrproject-rtos/zephyr
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179f08f049
This makes the SMP usage of ECC functionality properly encapsulated and offers the chance of other protocols to utilize the functionality in the future. Change-Id: Iae14beafd5f8f7dbe2c6ffd33700471b8a62b8da Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/* ecc.h - ECDH helpers */
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/*
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* Copyright (c) 2016 Intel Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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/* @brief Container for public key callback */
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struct bt_pub_key_cb {
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/** @brief Callback type for Public Key generation.
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*
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* Used to notify of the local public key or that the local key is not
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* available (either because of a failure to read it or because it is
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* being regenerated).
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*
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* @param key The local public key, or NULL in case of no key.
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*/
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void (*func)(const uint8_t key[64]);
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struct bt_pub_key_cb *_next;
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};
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/* @brief Generate a new Public Key.
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*
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* Generate a new ECC Public Key. The callback will persist even after the
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* key has been generated, and will be used to notify of new generation
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* processes (NULL as key).
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*
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* @param cb Callback to notify the new key, or NULL to request an update
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* without registering any new callback.
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*
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* @return Zero on success or negative error code otherwise
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*/
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int bt_pub_key_gen(struct bt_pub_key_cb *cb);
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/* @brief Get the current Public Key.
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*
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* Get the current ECC Public Key.
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*
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* @return Current key, or NULL if not available.
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*/
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const uint8_t *bt_pub_key_get(void);
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/* @typedef bt_dh_key_cb_t
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* @brief Callback type for DH Key calculation.
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*
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* Used to notify of the calculated DH Key.
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*
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* @param key The DH Key, or NULL in case of failure.
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*/
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typedef void (*bt_dh_key_cb_t)(const uint8_t key[32]);
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/* @brief Calculate a DH Key from a remote Public Key.
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*
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* Calculate a DH Key from the remote Public Key.
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*
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* @param remote_pk Remote Public Key.
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* @param cb Callback to notify the calculated key.
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*
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* @return Zero on success or negative error code otherwise
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*/
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int bt_dh_key_gen(const uint8_t remote_pk[64], bt_dh_key_cb_t cb);
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