mirror of
https://github.com/Atmosphere-NX/Atmosphere-libs.git
synced 2025-11-04 13:21:17 +01:00
102 lines
3.6 KiB
C++
102 lines
3.6 KiB
C++
/*
|
|
* Copyright (c) Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
#include <vapours/common.hpp>
|
|
#include <vapours/assert.hpp>
|
|
#include <vapours/util.hpp>
|
|
#include <vapours/crypto/impl/crypto_sha256_impl.hpp>
|
|
#include <vapours/crypto/impl/crypto_sha256_impl_constexpr.hpp>
|
|
|
|
namespace ams::crypto {
|
|
|
|
struct Sha256Context {
|
|
u32 intermediate_hash[impl::Sha256Impl::HashSize / sizeof(u32)];
|
|
u64 bits_consumed;
|
|
};
|
|
|
|
class Sha256Generator {
|
|
NON_COPYABLE(Sha256Generator);
|
|
NON_MOVEABLE(Sha256Generator);
|
|
private:
|
|
using Impl = impl::Sha256Impl;
|
|
public:
|
|
static constexpr size_t HashSize = Impl::HashSize;
|
|
static constexpr size_t BlockSize = Impl::BlockSize;
|
|
|
|
static constexpr inline u8 Asn1Identifier[] = {
|
|
0x30, 0x31, /* Sequence, size 0x31 */
|
|
0x30, 0x0D, /* Sequence, size 0x0D */
|
|
0x06, 0x09, /* Object Identifier */
|
|
0x60, 0x86, 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, /* SHA-256 */
|
|
0x05, 0x00, /* Null */
|
|
0x04, 0x20, /* Octet string, size 0x20 */
|
|
};
|
|
static constexpr size_t Asn1IdentifierSize = util::size(Asn1Identifier);
|
|
private:
|
|
Impl m_impl{};
|
|
public:
|
|
Sha256Generator() = default;
|
|
|
|
void Initialize() {
|
|
m_impl.Initialize();
|
|
}
|
|
|
|
void Update(const void *data, size_t size) {
|
|
m_impl.Update(data, size);
|
|
}
|
|
|
|
void GetHash(void *dst, size_t size) {
|
|
m_impl.GetHash(dst, size);
|
|
}
|
|
|
|
void InitializeWithContext(const Sha256Context *context) {
|
|
m_impl.InitializeWithContext(context);
|
|
}
|
|
|
|
size_t GetContext(Sha256Context *context) const {
|
|
return m_impl.GetContext(context);
|
|
}
|
|
|
|
size_t GetBufferedDataSize() const {
|
|
return m_impl.GetBufferedDataSize();
|
|
}
|
|
|
|
void GetBufferedData(void *dst, size_t dst_size) const {
|
|
return m_impl.GetBufferedData(dst, dst_size);
|
|
}
|
|
};
|
|
|
|
void GenerateSha256(void *dst, size_t dst_size, const void *src, size_t src_size);
|
|
|
|
ALWAYS_INLINE void GenerateSha256Hash(void *dst, size_t dst_size, const void *src, size_t src_size) {
|
|
return GenerateSha256(dst, dst_size, src, src_size);
|
|
}
|
|
|
|
template<typename T, typename = typename std::enable_if<std::same_as<T, u8> || std::same_as<T, s8> || std::same_as<T, char> || std::same_as<T, unsigned char>>::type>
|
|
constexpr ALWAYS_INLINE void GenerateSha256(u8 *dst, size_t dst_size, const T *src, size_t src_size) {
|
|
if (std::is_constant_evaluated()) {
|
|
impl::Sha256CompileTimeImpl sha;
|
|
sha.Initialize();
|
|
sha.Update(src, src_size);
|
|
sha.GetHash(dst, dst_size);
|
|
} else {
|
|
return GenerateSha256(static_cast<void *>(dst), dst_size, static_cast<const void *>(src), src_size);
|
|
}
|
|
}
|
|
|
|
}
|