mirror of
https://github.com/dolphin-emu/dolphin.git
synced 2024-11-14 21:37:52 -07:00
bb27d4cc95
Needed for the next commit. NFS disc images are hashed but not encrypted. While we're at it, also get rid of SupportsIntegrityCheck. It does the same thing as old IsEncryptedAndHashed and new HasWiiHashes.
657 lines
20 KiB
C++
657 lines
20 KiB
C++
// Copyright 2008 Dolphin Emulator Project
|
|
// SPDX-License-Identifier: GPL-2.0-or-later
|
|
|
|
#include "DiscIO/VolumeWii.h"
|
|
|
|
#include <algorithm>
|
|
#include <array>
|
|
#include <cstddef>
|
|
#include <cstring>
|
|
#include <future>
|
|
#include <map>
|
|
#include <memory>
|
|
#include <optional>
|
|
#include <string>
|
|
#include <thread>
|
|
#include <utility>
|
|
#include <vector>
|
|
|
|
#include "Common/Align.h"
|
|
#include "Common/Assert.h"
|
|
#include "Common/CommonTypes.h"
|
|
#include "Common/Crypto/AES.h"
|
|
#include "Common/Crypto/SHA1.h"
|
|
#include "Common/Logging/Log.h"
|
|
#include "Common/Swap.h"
|
|
|
|
#include "DiscIO/Blob.h"
|
|
#include "DiscIO/DiscExtractor.h"
|
|
#include "DiscIO/DiscUtils.h"
|
|
#include "DiscIO/Enums.h"
|
|
#include "DiscIO/FileSystemGCWii.h"
|
|
#include "DiscIO/Filesystem.h"
|
|
#include "DiscIO/Volume.h"
|
|
#include "DiscIO/WiiSaveBanner.h"
|
|
|
|
namespace DiscIO
|
|
{
|
|
VolumeWii::VolumeWii(std::unique_ptr<BlobReader> reader)
|
|
: m_reader(std::move(reader)), m_game_partition(PARTITION_NONE),
|
|
m_last_decrypted_block(UINT64_MAX)
|
|
{
|
|
ASSERT(m_reader);
|
|
|
|
m_has_hashes = m_reader->ReadSwapped<u8>(0x60) == u8(0);
|
|
m_has_encryption = m_reader->ReadSwapped<u8>(0x61) == u8(0);
|
|
|
|
if (m_has_encryption && !m_has_hashes)
|
|
ERROR_LOG_FMT(DISCIO, "Wii disc has encryption but no hashes! This probably won't work well");
|
|
|
|
for (u32 partition_group = 0; partition_group < 4; ++partition_group)
|
|
{
|
|
const std::optional<u32> number_of_partitions =
|
|
m_reader->ReadSwapped<u32>(0x40000 + (partition_group * 8));
|
|
if (!number_of_partitions)
|
|
continue;
|
|
|
|
const std::optional<u64> partition_table_offset =
|
|
ReadSwappedAndShifted(0x40000 + (partition_group * 8) + 4, PARTITION_NONE);
|
|
if (!partition_table_offset)
|
|
continue;
|
|
|
|
for (u32 i = 0; i < number_of_partitions; i++)
|
|
{
|
|
const std::optional<u64> partition_offset =
|
|
ReadSwappedAndShifted(*partition_table_offset + (i * 8), PARTITION_NONE);
|
|
if (!partition_offset)
|
|
continue;
|
|
|
|
const Partition partition(*partition_offset);
|
|
|
|
const std::optional<u32> partition_type =
|
|
m_reader->ReadSwapped<u32>(*partition_table_offset + (i * 8) + 4);
|
|
if (!partition_type)
|
|
continue;
|
|
|
|
// If this is the game partition, set m_game_partition
|
|
if (m_game_partition == PARTITION_NONE && *partition_type == 0)
|
|
m_game_partition = partition;
|
|
|
|
auto get_ticket = [this, partition]() -> IOS::ES::TicketReader {
|
|
std::vector<u8> ticket_buffer(sizeof(IOS::ES::Ticket));
|
|
if (!m_reader->Read(partition.offset, ticket_buffer.size(), ticket_buffer.data()))
|
|
return INVALID_TICKET;
|
|
return IOS::ES::TicketReader{std::move(ticket_buffer)};
|
|
};
|
|
|
|
auto get_tmd = [this, partition]() -> IOS::ES::TMDReader {
|
|
const std::optional<u32> tmd_size =
|
|
m_reader->ReadSwapped<u32>(partition.offset + WII_PARTITION_TMD_SIZE_ADDRESS);
|
|
const std::optional<u64> tmd_address = ReadSwappedAndShifted(
|
|
partition.offset + WII_PARTITION_TMD_OFFSET_ADDRESS, PARTITION_NONE);
|
|
if (!tmd_size || !tmd_address)
|
|
return INVALID_TMD;
|
|
if (!IOS::ES::IsValidTMDSize(*tmd_size))
|
|
{
|
|
// This check is normally done by ES in ES_DiVerify, but that would happen too late
|
|
// (after allocating the buffer), so we do the check here.
|
|
ERROR_LOG_FMT(DISCIO, "Invalid TMD size");
|
|
return INVALID_TMD;
|
|
}
|
|
std::vector<u8> tmd_buffer(*tmd_size);
|
|
if (!m_reader->Read(partition.offset + *tmd_address, *tmd_size, tmd_buffer.data()))
|
|
return INVALID_TMD;
|
|
return IOS::ES::TMDReader{std::move(tmd_buffer)};
|
|
};
|
|
|
|
auto get_cert_chain = [this, partition]() -> std::vector<u8> {
|
|
const std::optional<u32> size =
|
|
m_reader->ReadSwapped<u32>(partition.offset + WII_PARTITION_CERT_CHAIN_SIZE_ADDRESS);
|
|
const std::optional<u64> address = ReadSwappedAndShifted(
|
|
partition.offset + WII_PARTITION_CERT_CHAIN_OFFSET_ADDRESS, PARTITION_NONE);
|
|
if (!size || !address)
|
|
return {};
|
|
std::vector<u8> cert_chain(*size);
|
|
if (!m_reader->Read(partition.offset + *address, *size, cert_chain.data()))
|
|
return {};
|
|
return cert_chain;
|
|
};
|
|
|
|
auto get_h3_table = [this, partition]() -> std::vector<u8> {
|
|
if (!m_has_hashes)
|
|
return {};
|
|
const std::optional<u64> h3_table_offset = ReadSwappedAndShifted(
|
|
partition.offset + WII_PARTITION_H3_OFFSET_ADDRESS, PARTITION_NONE);
|
|
if (!h3_table_offset)
|
|
return {};
|
|
std::vector<u8> h3_table(WII_PARTITION_H3_SIZE);
|
|
if (!m_reader->Read(partition.offset + *h3_table_offset, WII_PARTITION_H3_SIZE,
|
|
h3_table.data()))
|
|
return {};
|
|
return h3_table;
|
|
};
|
|
|
|
auto get_key = [this, partition]() -> std::unique_ptr<Common::AES::Context> {
|
|
const IOS::ES::TicketReader& ticket = *m_partitions[partition].ticket;
|
|
if (!ticket.IsValid())
|
|
return nullptr;
|
|
return Common::AES::CreateContextDecrypt(ticket.GetTitleKey().data());
|
|
};
|
|
|
|
auto get_file_system = [this, partition]() -> std::unique_ptr<FileSystem> {
|
|
auto file_system = std::make_unique<FileSystemGCWii>(this, partition);
|
|
return file_system->IsValid() ? std::move(file_system) : nullptr;
|
|
};
|
|
|
|
auto get_data_offset = [this, partition]() -> u64 {
|
|
return ReadSwappedAndShifted(partition.offset + 0x2b8, PARTITION_NONE).value_or(0);
|
|
};
|
|
|
|
m_partitions.emplace(
|
|
partition, PartitionDetails{Common::Lazy<std::unique_ptr<Common::AES::Context>>(get_key),
|
|
Common::Lazy<IOS::ES::TicketReader>(get_ticket),
|
|
Common::Lazy<IOS::ES::TMDReader>(get_tmd),
|
|
Common::Lazy<std::vector<u8>>(get_cert_chain),
|
|
Common::Lazy<std::vector<u8>>(get_h3_table),
|
|
Common::Lazy<std::unique_ptr<FileSystem>>(get_file_system),
|
|
Common::Lazy<u64>(get_data_offset), *partition_type});
|
|
}
|
|
}
|
|
}
|
|
|
|
VolumeWii::~VolumeWii()
|
|
{
|
|
}
|
|
|
|
bool VolumeWii::Read(u64 offset, u64 length, u8* buffer, const Partition& partition) const
|
|
{
|
|
if (partition == PARTITION_NONE)
|
|
return m_reader->Read(offset, length, buffer);
|
|
|
|
auto it = m_partitions.find(partition);
|
|
if (it == m_partitions.end())
|
|
return false;
|
|
const PartitionDetails& partition_details = it->second;
|
|
|
|
const u64 partition_data_offset = partition.offset + *partition_details.data_offset;
|
|
if (m_has_hashes && m_has_encryption &&
|
|
m_reader->SupportsReadWiiDecrypted(offset, length, partition_data_offset))
|
|
{
|
|
return m_reader->ReadWiiDecrypted(offset, length, buffer, partition_data_offset);
|
|
}
|
|
|
|
if (!m_has_hashes)
|
|
{
|
|
return m_reader->Read(partition_data_offset + offset, length, buffer);
|
|
}
|
|
|
|
Common::AES::Context* aes_context = nullptr;
|
|
std::unique_ptr<u8[]> read_buffer = nullptr;
|
|
if (m_has_encryption)
|
|
{
|
|
aes_context = partition_details.key->get();
|
|
if (!aes_context)
|
|
return false;
|
|
|
|
read_buffer = std::make_unique<u8[]>(BLOCK_TOTAL_SIZE);
|
|
}
|
|
|
|
while (length > 0)
|
|
{
|
|
// Calculate offsets
|
|
u64 block_offset_on_disc = partition_data_offset + offset / BLOCK_DATA_SIZE * BLOCK_TOTAL_SIZE;
|
|
u64 data_offset_in_block = offset % BLOCK_DATA_SIZE;
|
|
|
|
if (m_last_decrypted_block != block_offset_on_disc)
|
|
{
|
|
if (m_has_encryption)
|
|
{
|
|
// Read the current block
|
|
if (!m_reader->Read(block_offset_on_disc, BLOCK_TOTAL_SIZE, read_buffer.get()))
|
|
return false;
|
|
|
|
// Decrypt the block's data
|
|
DecryptBlockData(read_buffer.get(), m_last_decrypted_block_data, aes_context);
|
|
}
|
|
else
|
|
{
|
|
// Read the current block
|
|
if (!m_reader->Read(block_offset_on_disc + BLOCK_HEADER_SIZE, BLOCK_DATA_SIZE,
|
|
m_last_decrypted_block_data))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
m_last_decrypted_block = block_offset_on_disc;
|
|
}
|
|
|
|
// Copy the decrypted data
|
|
u64 copy_size = std::min(length, BLOCK_DATA_SIZE - data_offset_in_block);
|
|
memcpy(buffer, &m_last_decrypted_block_data[data_offset_in_block],
|
|
static_cast<size_t>(copy_size));
|
|
|
|
// Update offsets
|
|
length -= copy_size;
|
|
buffer += copy_size;
|
|
offset += copy_size;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
bool VolumeWii::HasWiiHashes() const
|
|
{
|
|
return m_has_hashes;
|
|
}
|
|
|
|
bool VolumeWii::HasWiiEncryption() const
|
|
{
|
|
return m_has_encryption;
|
|
}
|
|
|
|
std::vector<Partition> VolumeWii::GetPartitions() const
|
|
{
|
|
std::vector<Partition> partitions;
|
|
for (const auto& pair : m_partitions)
|
|
partitions.push_back(pair.first);
|
|
return partitions;
|
|
}
|
|
|
|
Partition VolumeWii::GetGamePartition() const
|
|
{
|
|
return m_game_partition;
|
|
}
|
|
|
|
std::optional<u32> VolumeWii::GetPartitionType(const Partition& partition) const
|
|
{
|
|
auto it = m_partitions.find(partition);
|
|
return it != m_partitions.end() ? it->second.type : std::optional<u32>();
|
|
}
|
|
|
|
std::optional<u64> VolumeWii::GetTitleID(const Partition& partition) const
|
|
{
|
|
const IOS::ES::TicketReader& ticket = GetTicket(partition);
|
|
if (!ticket.IsValid())
|
|
return {};
|
|
return ticket.GetTitleId();
|
|
}
|
|
|
|
const IOS::ES::TicketReader& VolumeWii::GetTicket(const Partition& partition) const
|
|
{
|
|
auto it = m_partitions.find(partition);
|
|
return it != m_partitions.end() ? *it->second.ticket : INVALID_TICKET;
|
|
}
|
|
|
|
const IOS::ES::TMDReader& VolumeWii::GetTMD(const Partition& partition) const
|
|
{
|
|
auto it = m_partitions.find(partition);
|
|
return it != m_partitions.end() ? *it->second.tmd : INVALID_TMD;
|
|
}
|
|
|
|
const std::vector<u8>& VolumeWii::GetCertificateChain(const Partition& partition) const
|
|
{
|
|
auto it = m_partitions.find(partition);
|
|
return it != m_partitions.end() ? *it->second.cert_chain : INVALID_CERT_CHAIN;
|
|
}
|
|
|
|
const FileSystem* VolumeWii::GetFileSystem(const Partition& partition) const
|
|
{
|
|
auto it = m_partitions.find(partition);
|
|
return it != m_partitions.end() ? it->second.file_system->get() : nullptr;
|
|
}
|
|
|
|
u64 VolumeWii::OffsetInHashedPartitionToRawOffset(u64 offset, const Partition& partition,
|
|
u64 partition_data_offset)
|
|
{
|
|
if (partition == PARTITION_NONE)
|
|
return offset;
|
|
|
|
return partition.offset + partition_data_offset + (offset / BLOCK_DATA_SIZE * BLOCK_TOTAL_SIZE) +
|
|
(offset % BLOCK_DATA_SIZE);
|
|
}
|
|
|
|
u64 VolumeWii::PartitionOffsetToRawOffset(u64 offset, const Partition& partition) const
|
|
{
|
|
auto it = m_partitions.find(partition);
|
|
if (it == m_partitions.end())
|
|
return offset;
|
|
const u64 data_offset = *it->second.data_offset;
|
|
|
|
if (!m_has_hashes)
|
|
return partition.offset + data_offset + offset;
|
|
|
|
return OffsetInHashedPartitionToRawOffset(offset, partition, data_offset);
|
|
}
|
|
|
|
std::string VolumeWii::GetGameTDBID(const Partition& partition) const
|
|
{
|
|
return GetGameID(partition);
|
|
}
|
|
|
|
Region VolumeWii::GetRegion() const
|
|
{
|
|
return RegionCodeToRegion(m_reader->ReadSwapped<u32>(0x4E000));
|
|
}
|
|
|
|
std::map<Language, std::string> VolumeWii::GetLongNames() const
|
|
{
|
|
std::vector<char16_t> names(NAMES_TOTAL_CHARS);
|
|
names.resize(ReadFile(*this, GetGamePartition(), "opening.bnr",
|
|
reinterpret_cast<u8*>(names.data()), NAMES_TOTAL_BYTES, 0x5C));
|
|
return ReadWiiNames(names);
|
|
}
|
|
|
|
std::vector<u32> VolumeWii::GetBanner(u32* width, u32* height) const
|
|
{
|
|
*width = 0;
|
|
*height = 0;
|
|
|
|
const std::optional<u64> title_id = GetTitleID(GetGamePartition());
|
|
if (!title_id)
|
|
return std::vector<u32>();
|
|
|
|
return WiiSaveBanner(*title_id).GetBanner(width, height);
|
|
}
|
|
|
|
Platform VolumeWii::GetVolumeType() const
|
|
{
|
|
return Platform::WiiDisc;
|
|
}
|
|
|
|
bool VolumeWii::IsDatelDisc() const
|
|
{
|
|
return m_game_partition == PARTITION_NONE;
|
|
}
|
|
|
|
BlobType VolumeWii::GetBlobType() const
|
|
{
|
|
return m_reader->GetBlobType();
|
|
}
|
|
|
|
u64 VolumeWii::GetSize() const
|
|
{
|
|
return m_reader->GetDataSize();
|
|
}
|
|
|
|
bool VolumeWii::IsSizeAccurate() const
|
|
{
|
|
return m_reader->IsDataSizeAccurate();
|
|
}
|
|
|
|
u64 VolumeWii::GetRawSize() const
|
|
{
|
|
return m_reader->GetRawSize();
|
|
}
|
|
|
|
const BlobReader& VolumeWii::GetBlobReader() const
|
|
{
|
|
return *m_reader;
|
|
}
|
|
|
|
std::array<u8, 20> VolumeWii::GetSyncHash() const
|
|
{
|
|
auto context = Common::SHA1::CreateContext();
|
|
|
|
// Disc header
|
|
ReadAndAddToSyncHash(context.get(), 0, 0x80, PARTITION_NONE);
|
|
|
|
// Region code
|
|
ReadAndAddToSyncHash(context.get(), 0x4E000, 4, PARTITION_NONE);
|
|
|
|
// The data offset of the game partition - an important factor for disc drive timings
|
|
const u64 data_offset = PartitionOffsetToRawOffset(0, GetGamePartition());
|
|
context->Update(reinterpret_cast<const u8*>(&data_offset), sizeof(data_offset));
|
|
|
|
// TMD
|
|
AddTMDToSyncHash(context.get(), GetGamePartition());
|
|
|
|
// Game partition contents
|
|
AddGamePartitionToSyncHash(context.get());
|
|
|
|
return context->Finish();
|
|
}
|
|
|
|
bool VolumeWii::CheckH3TableIntegrity(const Partition& partition) const
|
|
{
|
|
auto it = m_partitions.find(partition);
|
|
if (it == m_partitions.end())
|
|
return false;
|
|
const PartitionDetails& partition_details = it->second;
|
|
|
|
const std::vector<u8>& h3_table = *partition_details.h3_table;
|
|
if (h3_table.size() != WII_PARTITION_H3_SIZE)
|
|
return false;
|
|
|
|
const IOS::ES::TMDReader& tmd = *partition_details.tmd;
|
|
if (!tmd.IsValid())
|
|
return false;
|
|
|
|
const std::vector<IOS::ES::Content> contents = tmd.GetContents();
|
|
if (contents.size() != 1)
|
|
return false;
|
|
|
|
return Common::SHA1::CalculateDigest(h3_table) == contents[0].sha1;
|
|
}
|
|
|
|
bool VolumeWii::CheckBlockIntegrity(u64 block_index, const u8* encrypted_data,
|
|
const Partition& partition) const
|
|
{
|
|
auto it = m_partitions.find(partition);
|
|
if (it == m_partitions.end())
|
|
return false;
|
|
const PartitionDetails& partition_details = it->second;
|
|
|
|
if (block_index / BLOCKS_PER_GROUP * Common::SHA1::DIGEST_LEN >=
|
|
partition_details.h3_table->size())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
HashBlock hashes;
|
|
u8 cluster_data_buffer[BLOCK_DATA_SIZE];
|
|
const u8* cluster_data;
|
|
|
|
if (m_has_encryption)
|
|
{
|
|
Common::AES::Context* aes_context = partition_details.key->get();
|
|
if (!aes_context)
|
|
return false;
|
|
|
|
DecryptBlockHashes(encrypted_data, &hashes, aes_context);
|
|
DecryptBlockData(encrypted_data, cluster_data_buffer, aes_context);
|
|
cluster_data = cluster_data_buffer;
|
|
}
|
|
else
|
|
{
|
|
std::memcpy(&hashes, encrypted_data, BLOCK_HEADER_SIZE);
|
|
cluster_data = encrypted_data + BLOCK_HEADER_SIZE;
|
|
}
|
|
|
|
for (u32 hash_index = 0; hash_index < 31; ++hash_index)
|
|
{
|
|
if (Common::SHA1::CalculateDigest(&cluster_data[hash_index * 0x400], 0x400) !=
|
|
hashes.h0[hash_index])
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (Common::SHA1::CalculateDigest(hashes.h0) != hashes.h1[block_index % 8])
|
|
return false;
|
|
|
|
if (Common::SHA1::CalculateDigest(hashes.h1) != hashes.h2[block_index / 8 % 8])
|
|
return false;
|
|
|
|
Common::SHA1::Digest h3_digest;
|
|
auto h3_digest_ptr =
|
|
partition_details.h3_table->data() + block_index / 64 * Common::SHA1::DIGEST_LEN;
|
|
memcpy(h3_digest.data(), h3_digest_ptr, sizeof(h3_digest));
|
|
if (Common::SHA1::CalculateDigest(hashes.h2) != h3_digest)
|
|
return false;
|
|
|
|
return true;
|
|
}
|
|
|
|
bool VolumeWii::CheckBlockIntegrity(u64 block_index, const Partition& partition) const
|
|
{
|
|
auto it = m_partitions.find(partition);
|
|
if (it == m_partitions.end())
|
|
return false;
|
|
const PartitionDetails& partition_details = it->second;
|
|
const u64 cluster_offset =
|
|
partition.offset + *partition_details.data_offset + block_index * BLOCK_TOTAL_SIZE;
|
|
|
|
std::vector<u8> cluster(BLOCK_TOTAL_SIZE);
|
|
if (!m_reader->Read(cluster_offset, cluster.size(), cluster.data()))
|
|
return false;
|
|
return CheckBlockIntegrity(block_index, cluster.data(), partition);
|
|
}
|
|
|
|
bool VolumeWii::HashGroup(const std::array<u8, BLOCK_DATA_SIZE> in[BLOCKS_PER_GROUP],
|
|
HashBlock out[BLOCKS_PER_GROUP],
|
|
const std::function<bool(size_t block)>& read_function)
|
|
{
|
|
std::array<std::future<void>, BLOCKS_PER_GROUP> hash_futures;
|
|
bool success = true;
|
|
|
|
for (size_t i = 0; i < BLOCKS_PER_GROUP; ++i)
|
|
{
|
|
if (read_function && success)
|
|
success = read_function(i);
|
|
|
|
hash_futures[i] = std::async(std::launch::async, [&in, &out, &hash_futures, success, i]() {
|
|
const size_t h1_base = Common::AlignDown(i, 8);
|
|
|
|
if (success)
|
|
{
|
|
// H0 hashes
|
|
for (size_t j = 0; j < 31; ++j)
|
|
out[i].h0[j] = Common::SHA1::CalculateDigest(in[i].data() + j * 0x400, 0x400);
|
|
|
|
// H0 padding
|
|
out[i].padding_0 = {};
|
|
|
|
// H1 hash
|
|
out[h1_base].h1[i - h1_base] = Common::SHA1::CalculateDigest(out[i].h0);
|
|
}
|
|
|
|
if (i % 8 == 7)
|
|
{
|
|
for (size_t j = 0; j < 7; ++j)
|
|
hash_futures[h1_base + j].get();
|
|
|
|
if (success)
|
|
{
|
|
// H1 padding
|
|
out[h1_base].padding_1 = {};
|
|
|
|
// H1 copies
|
|
for (size_t j = 1; j < 8; ++j)
|
|
out[h1_base + j].h1 = out[h1_base].h1;
|
|
|
|
// H2 hash
|
|
out[0].h2[h1_base / 8] = Common::SHA1::CalculateDigest(out[i].h1);
|
|
}
|
|
|
|
if (i == BLOCKS_PER_GROUP - 1)
|
|
{
|
|
for (size_t j = 0; j < 7; ++j)
|
|
hash_futures[j * 8 + 7].get();
|
|
|
|
if (success)
|
|
{
|
|
// H2 padding
|
|
out[0].padding_2 = {};
|
|
|
|
// H2 copies
|
|
for (size_t j = 1; j < BLOCKS_PER_GROUP; ++j)
|
|
out[j].h2 = out[0].h2;
|
|
}
|
|
}
|
|
}
|
|
});
|
|
}
|
|
|
|
// Wait for all the async tasks to finish
|
|
hash_futures.back().get();
|
|
|
|
return success;
|
|
}
|
|
|
|
bool VolumeWii::EncryptGroup(
|
|
u64 offset, u64 partition_data_offset, u64 partition_data_decrypted_size,
|
|
const std::array<u8, AES_KEY_SIZE>& key, BlobReader* blob,
|
|
std::array<u8, GROUP_TOTAL_SIZE>* out,
|
|
const std::function<void(HashBlock hash_blocks[BLOCKS_PER_GROUP])>& hash_exception_callback)
|
|
{
|
|
std::vector<std::array<u8, BLOCK_DATA_SIZE>> unencrypted_data(BLOCKS_PER_GROUP);
|
|
std::vector<HashBlock> unencrypted_hashes(BLOCKS_PER_GROUP);
|
|
|
|
const bool success =
|
|
HashGroup(unencrypted_data.data(), unencrypted_hashes.data(), [&](size_t block) {
|
|
if (offset + (block + 1) * BLOCK_DATA_SIZE <= partition_data_decrypted_size)
|
|
{
|
|
if (!blob->ReadWiiDecrypted(offset + block * BLOCK_DATA_SIZE, BLOCK_DATA_SIZE,
|
|
unencrypted_data[block].data(), partition_data_offset))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
unencrypted_data[block].fill(0);
|
|
}
|
|
return true;
|
|
});
|
|
|
|
if (!success)
|
|
return false;
|
|
|
|
if (hash_exception_callback)
|
|
hash_exception_callback(unencrypted_hashes.data());
|
|
|
|
const unsigned int threads =
|
|
std::min(BLOCKS_PER_GROUP, std::max<unsigned int>(1, std::thread::hardware_concurrency()));
|
|
|
|
std::vector<std::future<void>> encryption_futures(threads);
|
|
|
|
auto aes_context = Common::AES::CreateContextEncrypt(key.data());
|
|
|
|
for (size_t i = 0; i < threads; ++i)
|
|
{
|
|
encryption_futures[i] = std::async(
|
|
std::launch::async,
|
|
[&unencrypted_data, &unencrypted_hashes, &aes_context, &out](size_t start, size_t end) {
|
|
for (size_t j = start; j < end; ++j)
|
|
{
|
|
u8* out_ptr = out->data() + j * BLOCK_TOTAL_SIZE;
|
|
|
|
aes_context->CryptIvZero(reinterpret_cast<u8*>(&unencrypted_hashes[j]), out_ptr,
|
|
BLOCK_HEADER_SIZE);
|
|
|
|
aes_context->Crypt(out_ptr + 0x3D0, unencrypted_data[j].data(),
|
|
out_ptr + BLOCK_HEADER_SIZE, BLOCK_DATA_SIZE);
|
|
}
|
|
},
|
|
i * BLOCKS_PER_GROUP / threads, (i + 1) * BLOCKS_PER_GROUP / threads);
|
|
}
|
|
|
|
for (std::future<void>& future : encryption_futures)
|
|
future.get();
|
|
|
|
return true;
|
|
}
|
|
|
|
void VolumeWii::DecryptBlockHashes(const u8* in, HashBlock* out, Common::AES::Context* aes_context)
|
|
{
|
|
aes_context->CryptIvZero(in, reinterpret_cast<u8*>(out), sizeof(HashBlock));
|
|
}
|
|
|
|
void VolumeWii::DecryptBlockData(const u8* in, u8* out, Common::AES::Context* aes_context)
|
|
{
|
|
aes_context->Crypt(&in[0x3d0], &in[sizeof(HashBlock)], out, BLOCK_DATA_SIZE);
|
|
}
|
|
|
|
} // namespace DiscIO
|