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B3n30 2020-03-15 21:19:41 +01:00
parent ebeea43fb8
commit eaaa76b922
2 changed files with 17 additions and 23 deletions
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29
src/core/hw/aes/key.cpp
View file

@ -242,14 +242,11 @@ void LoadNativeFirmKeysOld3DS() {
auto asn1 = RSA::CreateASN1Message(secret_data);
auto result = rsa.GetSignature(asn1);
if (result.size() < 0x100) {
std::vector<u8> temp;
temp.resize(0x100 - result.size());
std::fill(temp.begin(), temp.end(), 0);
std::copy(result.begin(), result.end(), std::back_inserter(temp));
std::vector<u8> temp(0x100);
std::copy(result.begin(), result.end(), temp.end() - result.size());
result = temp;
} else if (result.size() > 0x100) {
std::vector<u8> temp(result.begin(), result.begin() + 0x100);
result = temp;
result.resize(0x100);
}
CryptoPP::SHA256 sha;
@ -262,13 +259,13 @@ void LoadNativeFirmKeysOld3DS() {
key_slots.at(0x25).SetKeyX(key);
}
void LoadSaveModeNativeFirmKeysOld3DS() {
// Use the save mode native firm instead of the normal mode since there are only 2 version of it
void LoadSafeModeNativeFirmKeysOld3DS() {
// Use the safe mode native firm instead of the normal mode since there are only 2 version of it
// and thus we can use fixed offsets
constexpr u64 save_mode_native_firm_id = 0x00040138'00000003;
constexpr u64 safe_mode_native_firm_id = 0x00040138'00000003;
FileSys::NCCHArchive archive(save_mode_native_firm_id, Service::FS::MediaType::NAND);
FileSys::NCCHArchive archive(safe_mode_native_firm_id, Service::FS::MediaType::NAND);
std::array<char, 8> exefs_filepath = {'.', 'f', 'i', 'r', 'm', 0, 0, 0};
FileSys::Path file_path = FileSys::MakeNCCHFilePath(
FileSys::NCCHFileOpenType::NCCHData, 0, FileSys::NCCHFilePathType::ExeFS, exefs_filepath);
@ -281,7 +278,7 @@ void LoadSaveModeNativeFirmKeysOld3DS() {
auto firm = std::move(file_result).Unwrap();
const std::size_t size = firm->GetSize();
if (size != 843776) {
LOG_ERROR(HW_AES, "save mode native firm has wrong size {}", size);
LOG_ERROR(HW_AES, "safe mode native firm has wrong size {}", size);
return;
}
std::vector<u8> firm_buffer(size);
@ -323,16 +320,16 @@ void LoadNativeFirmKeysNew3DS() {
AESKey secret_key;
secret.ReadArray(secret_key.data(), secret_key.size());
// Use the save mode native firm instead of the normal mode since there are only 1 version of it
// Use the safe mode native firm instead of the normal mode since there are only 1 version of it
// and thus we can use fixed offsets
constexpr u64 save_mode_native_firm_id = 0x00040138'20000003;
constexpr u64 safe_mode_native_firm_id = 0x00040138'20000003;
// TODO(B3N30): Add the 0x25 KeyX that gets initalized by native_firm
// TODO(B3N30): Add the 0x18 - 0x1F KeyX that gets initalized by native_firm. This probably
// requires the normal native firm with version > 9.6.0-X
FileSys::NCCHArchive archive(save_mode_native_firm_id, Service::FS::MediaType::NAND);
FileSys::NCCHArchive archive(safe_mode_native_firm_id, Service::FS::MediaType::NAND);
std::array<char, 8> exefs_filepath = {'.', 'f', 'i', 'r', 'm', 0, 0, 0};
FileSys::Path file_path = FileSys::MakeNCCHFilePath(
FileSys::NCCHFileOpenType::NCCHData, 0, FileSys::NCCHFilePathType::ExeFS, exefs_filepath);
@ -354,7 +351,7 @@ void LoadNativeFirmKeysNew3DS() {
return a | b << 8 | c << 16 | d << 24;
};
if (MakeMagic('F', 'I', 'R', 'M') != header.magic) {
LOG_ERROR(HW_AES, "N3DS SAVE MODE Native Firm has wrong header {}", header.magic);
LOG_ERROR(HW_AES, "N3DS SAFE MODE Native Firm has wrong header {}", header.magic);
return;
}
@ -505,7 +502,7 @@ void InitKeys() {
HW::RSA::InitSlots();
LoadBootromKeys();
LoadNativeFirmKeysOld3DS();
LoadSaveModeNativeFirmKeysOld3DS();
LoadSafeModeNativeFirmKeysOld3DS();
LoadNativeFirmKeysNew3DS();
LoadPresetKeys();
}

11
src/core/hw/rsa/rsa.cpp
View file

@ -10,7 +10,6 @@
#include "common/common_paths.h"
#include "common/file_util.h"
#include "common/logging/log.h"
#include "common/string_util.h"
#include "core/hw/rsa/rsa.h"
namespace HW::RSA {
@ -21,7 +20,7 @@ std::vector<u8> HexToBytes(const std::string& hex) {
for (unsigned int i = 0; i < hex.length(); i += 2) {
std::string byteString = hex.substr(i, 2);
u8 byte = (u8)strtol(byteString.c_str(), NULL, 16);
u8 byte = static_cast<u8>(std::strtol(byteString.c_str(), nullptr, 16));
bytes.push_back(byte);
}
return bytes;
@ -48,7 +47,7 @@ void InitSlots() {
initialized = true;
const std::string filepath = FileUtil::GetUserPath(FileUtil::UserPath::SysDataDir) + BOOTROM9;
auto file = FileUtil::IOFile(filepath, "rb");
FileUtil::IOFile file(filepath, "rb");
if (!file) {
return;
}
@ -61,14 +60,12 @@ void InitSlots() {
constexpr std::size_t RSA_MODULUS_POS = 0xB3E0;
file.Seek(RSA_MODULUS_POS, SEEK_SET);
std::vector<u8> modulus;
modulus.resize(256);
std::vector<u8> modulus(256);
file.ReadArray(modulus.data(), modulus.size());
constexpr std::size_t RSA_EXPONENT_POS = 0xB4E0;
file.Seek(RSA_EXPONENT_POS, SEEK_SET);
std::vector<u8> exponent;
exponent.resize(256);
std::vector<u8> exponent(256);
file.ReadArray(exponent.data(), exponent.size());
rsa_slots[0] = RsaSlot(exponent, modulus);