mirror of
https://github.com/Atmosphere-NX/Atmosphere
synced 2024-12-27 07:01:32 +00:00
125 lines
4.3 KiB
C++
125 lines
4.3 KiB
C++
/*
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* Copyright (c) Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* 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 <http://www.gnu.org/licenses/>.
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*/
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#pragma once
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#include <vapours/common.hpp>
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#include <vapours/assert.hpp>
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#include <vapours/util.hpp>
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#include <vapours/crypto/impl/crypto_sha3_impl.hpp>
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namespace ams::crypto {
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struct Sha3Context {
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u32 hash_size;
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u32 buffered_bytes;
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u64 internal_state[25];
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};
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namespace impl {
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template<size_t HashSize>
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struct Sha3Asn1IdentifierByte;
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template<> struct Sha3Asn1IdentifierByte<224 / BITSIZEOF(u8)> { static constexpr u8 Value = 0x07; };
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template<> struct Sha3Asn1IdentifierByte<256 / BITSIZEOF(u8)> { static constexpr u8 Value = 0x08; };
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template<> struct Sha3Asn1IdentifierByte<384 / BITSIZEOF(u8)> { static constexpr u8 Value = 0x09; };
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template<> struct Sha3Asn1IdentifierByte<512 / BITSIZEOF(u8)> { static constexpr u8 Value = 0x0A; };
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}
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template <size_t _HashSize>
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class Sha3Generator {
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NON_COPYABLE(Sha3Generator);
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NON_MOVEABLE(Sha3Generator);
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private:
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using Impl = impl::Sha3Impl<_HashSize>;
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public:
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static constexpr size_t HashSize = Impl::HashSize;
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static constexpr size_t BlockSize = Impl::BlockSize;
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static constexpr inline u8 Asn1Identifier[] = {
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0x30, 0x31, /* Sequence, size 0x31 */
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0x30, 0x0D, /* Sequence, size 0x0D */
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0x06, 0x09, /* Object Identifier */
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0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, impl::Sha3Asn1IdentifierByte<HashSize>::Value, /* SHA3-*** */
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0x05, 0x00, /* Null */
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0x04, 0x20, /* Octet string, size 0x20 */
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};
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static constexpr size_t Asn1IdentifierSize = util::size(Asn1Identifier);
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private:
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Impl m_impl;
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public:
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Sha3Generator() { /* ... */ }
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void Initialize() {
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m_impl.Initialize();
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}
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void Update(const void *data, size_t size) {
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m_impl.Update(data, size);
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}
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void GetHash(void *dst, size_t size) {
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m_impl.GetHash(dst, size);
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}
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void InitializeWithContext(const Sha3Context *context) {
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m_impl.InitializeWithContext(context);
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}
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void GetContext(Sha3Context *context) const {
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m_impl.GetContext(context);
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}
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};
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using Sha3224Generator = Sha3Generator<224 / BITSIZEOF(u8)>;
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using Sha3256Generator = Sha3Generator<256 / BITSIZEOF(u8)>;
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using Sha3384Generator = Sha3Generator<384 / BITSIZEOF(u8)>;
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using Sha3512Generator = Sha3Generator<512 / BITSIZEOF(u8)>;
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inline void GenerateSha3224(void *dst, size_t dst_size, const void *src, size_t src_size) {
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Sha3224Generator generator;
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generator.Initialize();
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generator.Update(src, src_size);
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generator.GetHash(dst, dst_size);
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}
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inline void GenerateSha3256(void *dst, size_t dst_size, const void *src, size_t src_size) {
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Sha3256Generator generator;
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generator.Initialize();
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generator.Update(src, src_size);
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generator.GetHash(dst, dst_size);
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}
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inline void GenerateSha3384(void *dst, size_t dst_size, const void *src, size_t src_size) {
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Sha3384Generator generator;
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generator.Initialize();
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generator.Update(src, src_size);
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generator.GetHash(dst, dst_size);
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}
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inline void GenerateSha3512(void *dst, size_t dst_size, const void *src, size_t src_size) {
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Sha3512Generator generator;
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generator.Initialize();
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generator.Update(src, src_size);
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generator.GetHash(dst, dst_size);
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}
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}
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