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Diffstat (limited to 'thirdparty/nRF5_SDK_15.0.0_a53641a/external/nrf_oberon/include/occ_hkdf_sha512.h')
-rw-r--r-- | thirdparty/nRF5_SDK_15.0.0_a53641a/external/nrf_oberon/include/occ_hkdf_sha512.h | 89 |
1 files changed, 89 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/external/nrf_oberon/include/occ_hkdf_sha512.h b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/nrf_oberon/include/occ_hkdf_sha512.h new file mode 100644 index 0000000..b8ab081 --- /dev/null +++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/nrf_oberon/include/occ_hkdf_sha512.h @@ -0,0 +1,89 @@ +/** + * Copyright (c) 2016 - 2018, Nordic Semiconductor ASA + * + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without modification, + * are permitted provided that the following conditions are met: + * + * 1. Redistributions of source code must retain the above copyright notice, this + * list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form, except as embedded into a Nordic + * Semiconductor ASA integrated circuit in a product or a software update for + * such product, must reproduce the above copyright notice, this list of + * conditions and the following disclaimer in the documentation and/or other + * materials provided with the distribution. + * + * 3. Neither the name of Nordic Semiconductor ASA nor the names of its + * contributors may be used to endorse or promote products derived from this + * software without specific prior written permission. + * + * 4. This software, with or without modification, must only be used with a + * Nordic Semiconductor ASA integrated circuit. + * + * 5. Any software provided in binary form under this license must not be reverse + * engineered, decompiled, modified and/or disassembled. + * + * THIS SOFTWARE IS PROVIDED BY NORDIC SEMICONDUCTOR ASA "AS IS" AND ANY EXPRESS + * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY, NONINFRINGEMENT, AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL NORDIC SEMICONDUCTOR ASA OR CONTRIBUTORS BE + * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR + * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE + * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT + * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/**@file + * HKDF-SHA512 is a key derivation function based on HMAC-SHA512. + * + * @see [RFC 5869 - HMAC-based Extract-and-Expand Key Derivation Function (HKDF)](http://tools.ietf.org/html/rfc5869) + */ + +#ifndef OCC_HKDF_SHA512_H +#define OCC_HKDF_SHA512_H + +#include <stdint.h> +#include <stddef.h> + + +/** + * Maximum length of a derived key. + */ +#define occ_hkdf_sha512_LENGTH_MAX (64) + +/** + * Maximum salt length. + */ +#define occ_hkdf_sha512_SALT_LENGTH_MAX (128) + + +/** + * HKDF-SHA512 algoritm. + * + * A new pseudorandom key of length @p r_len is derived from an input key + * @p key, a salt @p salt and additional information @p info. The new key is put + * into @p r. + * + * **Example** + * @include occ_hkdf_sha512.c + * + * @param[out] r Output key. + * @param r_len Length of @p r, 0 < @p r_len <= @c occ_hkdf_sha512_LENGTH_MAX. + * @param key Input key. + * @param key_len Length of @p key. + * @param salt Salt. + * @param salt_len Length of salt @p salt. 0 <= @p salt_len <= @c occ_hkdf_sha512_SALT_LENGTH_MAX. + * @param info Additional information. + * @param info_len Length of @p info. + */ +void occ_hkdf_sha512(uint8_t* r, size_t r_len, + const uint8_t* key, size_t key_len, + const uint8_t* salt, size_t salt_len, + const uint8_t* info, size_t info_len); + +#endif |