204 lines
6.8 KiB
C
204 lines
6.8 KiB
C
/****************************************************************************
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* include/nuttx/crypto/blake2s.h
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*
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* This code is based on public-domain/CC0 BLAKE2 reference implementation
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* by Samual Neves, at https://github.com/BLAKE2/BLAKE2/tree/master/ref
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* Copyright 2012, Samuel Neves <sneves@dei.uc.pt>
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*
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* Copyright (C) 2017 Haltian Ltd. All rights reserved.
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* Authors: Jussi Kivilinna <jussi.kivilinna@haltian.com>
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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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* 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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* 3. Neither the name NuttX nor the names of its contributors may be
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* 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
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* 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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#ifndef __INCLUDE_NUTTX_CRYPTO_BLAKE2S_H
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#define __INCLUDE_NUTTX_CRYPTO_BLAKE2S_H
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdint.h>
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#ifdef __cplusplus
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extern "C"
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{
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#endif
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/****************************************************************************
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* Public Types
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****************************************************************************/
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enum blake2s_constant
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{
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BLAKE2S_BLOCKBYTES = 64,
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BLAKE2S_OUTBYTES = 32,
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BLAKE2S_KEYBYTES = 32,
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BLAKE2S_SALTBYTES = 8,
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BLAKE2S_PERSONALBYTES = 8
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};
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typedef struct blake2s_state__
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{
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uint32_t h[8];
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uint32_t t[2];
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uint32_t f[2];
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size_t buflen;
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size_t outlen;
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uint8_t buf[BLAKE2S_BLOCKBYTES];
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} blake2s_state;
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typedef struct blake2s_param__
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{
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uint8_t digest_length; /* 1 */
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uint8_t key_length; /* 2 */
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uint8_t fanout; /* 3 */
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uint8_t depth; /* 4 */
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uint8_t leaf_length[4]; /* 8 */
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uint8_t node_offset[4]; /* 12 */
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uint8_t xof_length[2]; /* 14 */
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uint8_t node_depth; /* 15 */
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uint8_t inner_length; /* 16 */
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/* uint8_t reserved[0]; */
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uint8_t salt[BLAKE2S_SALTBYTES]; /* 24 */
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uint8_t personal[BLAKE2S_PERSONALBYTES]; /* 32 */
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} blake2s_param;
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#ifdef __GNUC__ > 3
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#define BLAKE2_UNALIGNED 1
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typedef uint32_t uint32_alias_t __attribute__((may_alias)) aligned_data(1);
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typedef uint16_t uint16_alias_t __attribute__((may_alias)) aligned_data(1);
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#endif
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/****************************************************************************
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* Public Function Prototypes
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****************************************************************************/
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/* Streaming API */
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int blake2s_init(FAR blake2s_state *S, size_t outlen);
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int blake2s_init_key(FAR blake2s_state *S, size_t outlen,
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FAR const void *key,
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size_t keylen);
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int blake2s_init_param(FAR blake2s_state *S,
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FAR const blake2s_param *P);
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int blake2s_update(FAR blake2s_state *S,
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FAR const void *in, size_t inlen);
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int blake2s_final(FAR blake2s_state *S,
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FAR void *out, size_t outlen);
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/* Simple API */
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int blake2s(FAR void *out, size_t outlen,
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FAR const void *in, size_t inlen,
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FAR const void *key, size_t keylen);
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/****************************************************************************
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* Public Inline Functions
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****************************************************************************/
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static inline uint32_t blake2_load32(FAR const void *src)
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{
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#if defined(BLAKE2_UNALIGNED) && !defined(CONFIG_ENDIAN_BIG)
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return *(FAR uint32_alias_t *)src;
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#elif !defined(CONFIG_ENDIAN_BIG)
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FAR const uint8_t *p = (FAR const uint8_t *)src;
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return ((uint32_t)(p[0]) << 24) |
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((uint32_t)(p[1]) << 16) |
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((uint32_t)(p[2]) << 8) |
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((uint32_t)(p[3]) << 0);
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#else
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FAR const uint8_t *p = (FAR const uint8_t *)src;
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return ((uint32_t)(p[0]) << 0) |
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((uint32_t)(p[1]) << 8) |
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((uint32_t)(p[2]) << 16) |
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((uint32_t)(p[3]) << 24);
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#endif
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}
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static inline uint16_t blake2_load16(FAR const void *src)
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{
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#if defined(BLAKE2_UNALIGNED) && !defined(CONFIG_ENDIAN_BIG)
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return *(FAR uint16_alias_t *)src;
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#elif !defined(CONFIG_ENDIAN_BIG)
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const uint8_t *p = (FAR const uint8_t *)src;
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return ((uint16_t)(p[0]) << 8) | ((uint16_t)(p[1]) << 0);
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#else
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const uint8_t *p = (FAR const uint8_t *)src;
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return ((uint16_t)(p[0]) << 0) | ((uint16_t)(p[1]) << 8);
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#endif
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}
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static inline void blake2_store16(FAR void *dst, uint16_t w)
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{
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#if defined(BLAKE2_UNALIGNED) && !defined(CONFIG_ENDIAN_BIG)
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*(FAR uint16_alias_t *)dst = w;
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#elif !defined(CONFIG_ENDIAN_BIG)
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FAR uint8_t *p = (FAR uint8_t *)dst;
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p[1] = (uint8_t)w; w >>= 8;
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p[0] = (uint8_t)w;
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#else
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FAR uint8_t *p = (FAR uint8_t *)dst;
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p[0] = (uint8_t)w; w >>= 8;
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p[1] = (uint8_t)w;
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#endif
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}
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static inline void blake2_store32(FAR void *dst, uint32_t w)
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{
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#if defined(BLAKE2_UNALIGNED) && !defined(CONFIG_ENDIAN_BIG)
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*(FAR uint32_alias_t *)dst = w;
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#elif !defined(CONFIG_ENDIAN_BIG)
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FAR uint8_t *p = (FAR uint8_t *) dst;
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p[0] = (uint8_t)(w >> 24);
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p[1] = (uint8_t)(w >> 16);
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p[2] = (uint8_t)(w >> 8);
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p[3] = (uint8_t)(w >> 0);
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#else
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FAR uint8_t *p = (FAR uint8_t *) dst;
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p[0] = (uint8_t)(w >> 0);
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p[1] = (uint8_t)(w >> 8);
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p[2] = (uint8_t)(w >> 16);
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p[3] = (uint8_t)(w >> 24);
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#endif
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}
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#ifdef __cplusplus
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}
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#endif
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#endif /* __INCLUDE_NUTTX_CRYPTO_BLAKE2S_H */
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