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introduce wrapper for SHA1 functionality

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This commit is contained in:
Shawn Hoffman
2022-07-23 22:45:10 -07:00
parent 91169333e9
commit dd29a54cf6
27 changed files with 256 additions and 199 deletions
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36
Source/Core/DiscIO/WIACompression.cpp
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@ -13,7 +13,6 @@
#include <bzlib.h>
#include <lzma.h>
#include <mbedtls/sha1.h>
#include <zstd.h>
#include "Common/Assert.h"
@ -48,7 +47,6 @@ bool NoneDecompressor::Decompress(const DecompressionBuffer& in, DecompressionBu
PurgeDecompressor::PurgeDecompressor(u64 decompressed_size) : m_decompressed_size(decompressed_size)
{
mbedtls_sha1_init(&m_sha1_context);
}
bool PurgeDecompressor::Decompress(const DecompressionBuffer& in, DecompressionBuffer* out,
@ -56,10 +54,10 @@ bool PurgeDecompressor::Decompress(const DecompressionBuffer& in, DecompressionB
{
if (!m_started)
{
mbedtls_sha1_starts_ret(&m_sha1_context);
m_sha1_context = Common::SHA1::CreateContext();
// Include the exception lists in the SHA-1 calculation (but not in the compression...)
mbedtls_sha1_update_ret(&m_sha1_context, in.data.data(), *in_bytes_read);
m_sha1_context->Update(in.data.data(), *in_bytes_read);
m_started = true;
}
@ -67,7 +65,7 @@ bool PurgeDecompressor::Decompress(const DecompressionBuffer& in, DecompressionB
while (!m_done && in.bytes_written != *in_bytes_read &&
(m_segment_bytes_written < sizeof(m_segment) || out->data.size() != out->bytes_written))
{
if (m_segment_bytes_written == 0 && *in_bytes_read == in.data.size() - sizeof(SHA1))
if (m_segment_bytes_written == 0 && *in_bytes_read == in.data.size() - Common::SHA1::DIGEST_LEN)
{
const size_t zeroes_to_write = std::min<size_t>(m_decompressed_size - m_out_bytes_written,
out->data.size() - out->bytes_written);
@ -79,10 +77,9 @@ bool PurgeDecompressor::Decompress(const DecompressionBuffer& in, DecompressionB
if (m_out_bytes_written == m_decompressed_size && in.bytes_written == in.data.size())
{
SHA1 actual_hash;
mbedtls_sha1_finish_ret(&m_sha1_context, actual_hash.data());
const auto actual_hash = m_sha1_context->Finish();
SHA1 expected_hash;
Common::SHA1::Digest expected_hash;
std::memcpy(expected_hash.data(), in.data.data() + *in_bytes_read, expected_hash.size());
*in_bytes_read += expected_hash.size();
@ -102,7 +99,7 @@ bool PurgeDecompressor::Decompress(const DecompressionBuffer& in, DecompressionB
std::memcpy(reinterpret_cast<u8*>(&m_segment) + m_segment_bytes_written,
in.data.data() + *in_bytes_read, bytes_to_copy);
mbedtls_sha1_update_ret(&m_sha1_context, in.data.data() + *in_bytes_read, bytes_to_copy);
m_sha1_context->Update(in.data.data() + *in_bytes_read, bytes_to_copy);
*in_bytes_read += bytes_to_copy;
m_bytes_read += bytes_to_copy;
@ -134,7 +131,7 @@ bool PurgeDecompressor::Decompress(const DecompressionBuffer& in, DecompressionB
std::memcpy(out->data.data() + out->bytes_written, in.data.data() + *in_bytes_read,
bytes_to_copy);
mbedtls_sha1_update_ret(&m_sha1_context, in.data.data() + *in_bytes_read, bytes_to_copy);
m_sha1_context->Update(in.data.data() + *in_bytes_read, bytes_to_copy);
*in_bytes_read += bytes_to_copy;
m_bytes_read += bytes_to_copy;
@ -435,10 +432,7 @@ bool RVZPackDecompressor::Done() const
Compressor::~Compressor() = default;
PurgeCompressor::PurgeCompressor()
{
mbedtls_sha1_init(&m_sha1_context);
}
PurgeCompressor::PurgeCompressor() = default;
PurgeCompressor::~PurgeCompressor() = default;
@ -447,14 +441,14 @@ bool PurgeCompressor::Start(std::optional<u64> size)
m_buffer.clear();
m_bytes_written = 0;
mbedtls_sha1_starts_ret(&m_sha1_context);
m_sha1_context = Common::SHA1::CreateContext();
return true;
}
bool PurgeCompressor::AddPrecedingDataOnlyForPurgeHashing(const u8* data, size_t size)
{
mbedtls_sha1_update_ret(&m_sha1_context, data, size);
m_sha1_context->Update(data, size);
return true;
}
@ -465,7 +459,7 @@ bool PurgeCompressor::Compress(const u8* data, size_t size)
ASSERT_MSG(DISCIO, m_bytes_written == 0,
"Calling PurgeCompressor::Compress() twice is not supported");
m_buffer.resize(size + sizeof(PurgeSegment) + sizeof(SHA1));
m_buffer.resize(size + sizeof(PurgeSegment) + Common::SHA1::DIGEST_LEN);
size_t bytes_read = 0;
@ -517,10 +511,12 @@ bool PurgeCompressor::Compress(const u8* data, size_t size)
bool PurgeCompressor::End()
{
mbedtls_sha1_update_ret(&m_sha1_context, m_buffer.data(), m_bytes_written);
m_sha1_context->Update(m_buffer.data(), m_bytes_written);
mbedtls_sha1_finish_ret(&m_sha1_context, m_buffer.data() + m_bytes_written);
m_bytes_written += sizeof(SHA1);
const auto digest = m_sha1_context->Finish();
std::memcpy(m_buffer.data() + m_bytes_written, digest.data(), sizeof(digest));
m_bytes_written += sizeof(digest);
ASSERT(m_bytes_written <= m_buffer.size());