Load AES keys stored in boot9.bin (#4335)
* Load AES keys stored in boot9.bin
This commit is contained in:
parent
2a7b87874b
commit
f48157c6ea
2 changed files with 85 additions and 0 deletions
|
@ -50,3 +50,4 @@
|
|||
// Sys files
|
||||
#define SHARED_FONT "shared_font.bin"
|
||||
#define AES_KEYS "aes_keys.txt"
|
||||
#define BOOTROM9 "boot9.bin"
|
||||
|
|
|
@ -6,6 +6,7 @@
|
|||
#include <exception>
|
||||
#include <optional>
|
||||
#include <sstream>
|
||||
#include <fmt/format.h>
|
||||
#include "common/common_paths.h"
|
||||
#include "common/file_util.h"
|
||||
#include "common/logging/log.h"
|
||||
|
@ -20,6 +21,13 @@ namespace {
|
|||
|
||||
std::optional<AESKey> generator_constant;
|
||||
|
||||
struct KeyDesc {
|
||||
char key_type;
|
||||
std::size_t slot_id;
|
||||
// This key is identical to the key with the same key_type and slot_id -1
|
||||
bool same_as_before;
|
||||
};
|
||||
|
||||
struct KeySlot {
|
||||
std::optional<AESKey> x;
|
||||
std::optional<AESKey> y;
|
||||
|
@ -70,6 +78,81 @@ AESKey HexToKey(const std::string& hex) {
|
|||
return key;
|
||||
}
|
||||
|
||||
void LoadBootromKeys() {
|
||||
constexpr std::array<KeyDesc, 80> keys = {
|
||||
{{'X', 0x2C, false}, {'X', 0x2D, true}, {'X', 0x2E, true}, {'X', 0x2F, true},
|
||||
{'X', 0x30, false}, {'X', 0x31, true}, {'X', 0x32, true}, {'X', 0x33, true},
|
||||
{'X', 0x34, false}, {'X', 0x35, true}, {'X', 0x36, true}, {'X', 0x37, true},
|
||||
{'X', 0x38, false}, {'X', 0x39, true}, {'X', 0x3A, true}, {'X', 0x3B, true},
|
||||
{'X', 0x3C, false}, {'X', 0x3D, false}, {'X', 0x3E, false}, {'X', 0x3F, false},
|
||||
{'Y', 0x4, false}, {'Y', 0x5, false}, {'Y', 0x6, false}, {'Y', 0x7, false},
|
||||
{'Y', 0x8, false}, {'Y', 0x9, false}, {'Y', 0xA, false}, {'Y', 0xB, false},
|
||||
{'N', 0xC, false}, {'N', 0xD, true}, {'N', 0xE, true}, {'N', 0xF, true},
|
||||
{'N', 0x10, false}, {'N', 0x11, true}, {'N', 0x12, true}, {'N', 0x13, true},
|
||||
{'N', 0x14, false}, {'N', 0x15, false}, {'N', 0x16, false}, {'N', 0x17, false},
|
||||
{'N', 0x18, false}, {'N', 0x19, true}, {'N', 0x1A, true}, {'N', 0x1B, true},
|
||||
{'N', 0x1C, false}, {'N', 0x1D, true}, {'N', 0x1E, true}, {'N', 0x1F, true},
|
||||
{'N', 0x20, false}, {'N', 0x21, true}, {'N', 0x22, true}, {'N', 0x23, true},
|
||||
{'N', 0x24, false}, {'N', 0x25, true}, {'N', 0x26, true}, {'N', 0x27, true},
|
||||
{'N', 0x28, true}, {'N', 0x29, false}, {'N', 0x2A, false}, {'N', 0x2B, false},
|
||||
{'N', 0x2C, false}, {'N', 0x2D, true}, {'N', 0x2E, true}, {'N', 0x2F, true},
|
||||
{'N', 0x30, false}, {'N', 0x31, true}, {'N', 0x32, true}, {'N', 0x33, true},
|
||||
{'N', 0x34, false}, {'N', 0x35, true}, {'N', 0x36, true}, {'N', 0x37, true},
|
||||
{'N', 0x38, false}, {'N', 0x39, true}, {'N', 0x3A, true}, {'N', 0x3B, true},
|
||||
{'N', 0x3C, true}, {'N', 0x3D, false}, {'N', 0x3E, false}, {'N', 0x3F, false}}};
|
||||
|
||||
// Bootrom sets all these keys when executed, but later some of the normal keys get overwritten
|
||||
// by other applications e.g. process9. These normal keys thus aren't used by any application
|
||||
// and have no value for emulation
|
||||
|
||||
const std::string filepath = FileUtil::GetUserPath(FileUtil::UserPath::SysDataDir) + BOOTROM9;
|
||||
auto file = FileUtil::IOFile(filepath, "rb");
|
||||
if (!file) {
|
||||
return;
|
||||
}
|
||||
|
||||
const std::size_t length = file.GetSize();
|
||||
if (length != 65536) {
|
||||
LOG_ERROR(HW_AES, "Bootrom9 size is wrong: {}", length);
|
||||
return;
|
||||
}
|
||||
|
||||
constexpr std::size_t KEY_SECTION_START = 55760;
|
||||
file.Seek(KEY_SECTION_START, SEEK_SET); // Jump to the key section
|
||||
|
||||
AESKey new_key;
|
||||
for (const auto& key : keys) {
|
||||
if (!key.same_as_before) {
|
||||
file.ReadArray(new_key.data(), new_key.size());
|
||||
if (!file) {
|
||||
LOG_ERROR(HW_AES, "Reading from Bootrom9 failed");
|
||||
return;
|
||||
}
|
||||
}
|
||||
|
||||
std::string s;
|
||||
for (auto pos : new_key) {
|
||||
s += fmt::format("{:02X}", pos);
|
||||
}
|
||||
LOG_DEBUG(HW_AES, "Loaded Slot{:#02x} Key{}: {}", key.slot_id, key.key_type, s);
|
||||
|
||||
switch (key.key_type) {
|
||||
case 'X':
|
||||
key_slots.at(key.slot_id).SetKeyX(new_key);
|
||||
break;
|
||||
case 'Y':
|
||||
key_slots.at(key.slot_id).SetKeyY(new_key);
|
||||
break;
|
||||
case 'N':
|
||||
key_slots.at(key.slot_id).SetNormalKey(new_key);
|
||||
break;
|
||||
default:
|
||||
LOG_ERROR(HW_AES, "Invalid key type {}", key.key_type);
|
||||
break;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
void LoadPresetKeys() {
|
||||
const std::string filepath = FileUtil::GetUserPath(FileUtil::UserPath::SysDataDir) + AES_KEYS;
|
||||
FileUtil::CreateFullPath(filepath); // Create path if not already created
|
||||
|
@ -148,6 +231,7 @@ void InitKeys() {
|
|||
static bool initialized = false;
|
||||
if (initialized)
|
||||
return;
|
||||
LoadBootromKeys();
|
||||
LoadPresetKeys();
|
||||
initialized = true;
|
||||
}
|
||||
|
|
Loading…
Reference in a new issue