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58 lines
1.5 KiB
C
58 lines
1.5 KiB
C
/*
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* Copyright (C) 2019 Freie Universität Berlin
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*
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* This file is subject to the terms and conditions of the GNU Lesser
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* General Public License v2.1. See the file LICENSE in the top level
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* directory for more details.
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*/
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#pragma once
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/**
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* @defgroup sys_hashes_pbkdf2 PBKDF2
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* @ingroup sys_hashes
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* @brief PBKDF2 key derivation implementation.
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* @{
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*
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* @file
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* @brief PBKDF2 key derivation implementation.
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*
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* @author Juan I Carrano <j.carrano@fu-berlin.de>
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*
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* @}
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*/
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#include "hashes/sha256.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 PBKDF2 key size length
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*
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* @note Currently only one derived key length is supported (32)
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*/
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#define PBKDF2_KEY_SIZE SHA256_DIGEST_LENGTH
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/**
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* @brief Create a key from a password and hash using PBKDF2.
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*
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* @param[in] password password pointer
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* @param[in] password_len length of password
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* @param[in] salt salt pointer
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* @param[in] salt_len salt length, recommended 64bit
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* @param[in] iterations number of rounds. Must be >1.
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* NIST’s detailed guide (Appendix A.2.2),
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* recommended 10000
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* @param[out] output array of size PBKDF2_KEY_SIZE
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*/
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void pbkdf2_sha256(const void *password, size_t password_len,
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const void *salt, size_t salt_len,
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int iterations,
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uint8_t *output);
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#ifdef __cplusplus
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}
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#endif
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