85 lines
2.3 KiB
C
85 lines
2.3 KiB
C
/*
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* sha3.h
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*
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* Copyright (c) Atmosphère-NX.
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* Copyright (c) 2023-2024, DarkMatterCore <pabloacurielz@gmail.com>.
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*
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* This file is part of nxdumptool (https://github.com/DarkMatterCore/nxdumptool).
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* Loosely based on crypto_sha3_impl.hpp from Atmosphere-libs.
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*
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* nxdumptool is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* nxdumptool is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#pragma once
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#ifndef __SHA3_H__
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#define __SHA3_H__
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#include <switch.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifndef SHA3_INTERNAL_STATE_SIZE
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#define SHA3_INTERNAL_STATE_SIZE 200
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#endif
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#ifndef SHA3_HASH_SIZE_BYTES
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#define SHA3_HASH_SIZE_BYTES(bits) ((bits) / 8)
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#endif
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#ifndef SHA3_BLOCK_SIZE
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#define SHA3_BLOCK_SIZE(bits) (SHA3_INTERNAL_STATE_SIZE - (2 * SHA3_HASH_SIZE_BYTES(bits)))
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#endif
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#define _SHA3_CTX_OPS(bits) \
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void sha3##bits##ContextCreate(Sha3Context *out); \
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void sha3##bits##CalculateHash(void *dst, const void *src, size_t size);
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/// Context for SHA3 operations.
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typedef struct {
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size_t hash_size;
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size_t block_size;
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size_t buffered_bytes;
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u64 internal_state[SHA3_INTERNAL_STATE_SIZE / sizeof(u64)];
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bool finalized;
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} Sha3Context;
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/// SHA3-224 context creation and simple all-in-one calculation functions.
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_SHA3_CTX_OPS(224);
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/// SHA3-256 context creation and simple all-in-one calculation functions.
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_SHA3_CTX_OPS(256);
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/// SHA3-384 context creation and simple all-in-one calculation functions.
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_SHA3_CTX_OPS(384);
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/// SHA3-512 context creation and simple all-in-one calculation functions.
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_SHA3_CTX_OPS(512);
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/// Updates SHA3 context with data to hash.
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void sha3ContextUpdate(Sha3Context *ctx, const void *src, size_t size);
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/// Gets the context's output hash, finalizes the context.
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void sha3ContextGetHash(Sha3Context *ctx, void *dst);
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#undef _SHA3_CTX_OPS
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#ifdef __cplusplus
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}
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#endif
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#endif /* __SHA3_H__ */
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