mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
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700 lines
32 KiB
C++
700 lines
32 KiB
C++
/*
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* Copyright (c) 2018-2020 Atmosphère-NX
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms and conditions of the GNU General Public License,
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* version 2, as published by the Free Software Foundation.
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*
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* This program is distributed in the hope it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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* more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <exosphere.hpp>
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#include "../secmon_error.hpp"
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#include "../secmon_key_storage.hpp"
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#include "../secmon_misc.hpp"
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#include "secmon_smc_aes.hpp"
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#include "secmon_smc_device_unique_data.hpp"
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#include "secmon_smc_se_lock.hpp"
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#include "secmon_page_mapper.hpp"
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namespace ams::secmon::smc {
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namespace {
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constexpr inline auto AesKeySize = se::AesBlockSize;
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constexpr inline size_t CmacSizeMax = 1_KB;
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constexpr inline size_t DeviceUniqueDataSizeMin = 0x130;
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constexpr inline size_t DeviceUniqueDataSizeMax = 0x240;
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enum SealKey {
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SealKey_LoadAesKey = 0,
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SealKey_DecryptDeviceUniqueData = 1,
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SealKey_ImportLotusKey = 2,
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SealKey_ImportEsDeviceKey = 3,
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SealKey_ReencryptDeviceUniqueData = 4,
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SealKey_ImportSslKey = 5,
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SealKey_ImportEsClientCertKey = 6,
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SealKey_Count,
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};
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enum KeyType {
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KeyType_Default = 0,
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KeyType_NormalOnly = 1,
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KeyType_RecoveryOnly = 2,
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KeyType_NormalAndRecovery = 3,
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KeyType_Count,
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};
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enum CipherMode {
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CipherMode_CbcEncryption = 0,
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CipherMode_CbcDecryption = 1,
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CipherMode_Ctr = 2,
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CipherMode_Cmac = 3,
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};
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enum SpecificAesKey {
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SpecificAesKey_CalibrationEncryption0 = 0,
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SpecificAesKey_CalibrationEncryption1 = 1,
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SpecificAesKey_Count,
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};
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enum DeviceUniqueData {
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DeviceUniqueData_DecryptDeviceUniqueData = 0,
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DeviceUniqueData_ImportLotusKey = 1,
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DeviceUniqueData_ImportEsDeviceKey = 2,
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DeviceUniqueData_ImportSslKey = 3,
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DeviceUniqueData_ImportEsClientCertKey = 4,
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DeviceUniqueData_Count,
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};
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/* Ensure that our "subtract one" simplification is valid for the cases we care about. */
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static_assert(DeviceUniqueData_ImportLotusKey - 1 == ImportRsaKey_Lotus);
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static_assert(DeviceUniqueData_ImportEsDeviceKey - 1 == ImportRsaKey_EsDrmCert);
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static_assert(DeviceUniqueData_ImportSslKey - 1 == ImportRsaKey_Ssl);
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static_assert(DeviceUniqueData_ImportEsClientCertKey - 1 == ImportRsaKey_EsClientCert);
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constexpr ImportRsaKey ConvertToImportRsaKey(DeviceUniqueData data) {
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/* Not necessary, but if this is invoked at compile-time this will force a compile-time error. */
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AMS_ASSUME(data != DeviceUniqueData_DecryptDeviceUniqueData);
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AMS_ASSUME(data < DeviceUniqueData_Count);
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return static_cast<ImportRsaKey>(static_cast<int>(data) - 1);
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}
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enum SecureData {
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SecureData_Calibration = 0,
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SecureData_SafeMode = 1,
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SecureData_UserSystemProperEncryption = 2,
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SecureData_UserSystem = 3,
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SecureData_Count,
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};
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struct GenerateAesKekOption {
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using IsDeviceUnique = util::BitPack32::Field<0, 1, bool>;
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using KeyTypeIndex = util::BitPack32::Field<1, 4, KeyType>;
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using SealKeyIndex = util::BitPack32::Field<5, 3, SealKey>;
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using Reserved = util::BitPack32::Field<8, 24, u32>;
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};
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struct ComputeAesOption {
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using KeySlot = util::BitPack32::Field<0, 3, int>;
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using CipherModeIndex = util::BitPack32::Field<4, 2, CipherMode>;
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};
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struct DecryptDeviceUniqueDataOption {
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using DeviceUniqueDataIndex = util::BitPack32::Field<0, 3, DeviceUniqueData>;
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using Reserved = util::BitPack32::Field<3, 29, u32>;
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};
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constexpr const u8 SealKeySources[SealKey_Count][AesKeySize] = {
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[SealKey_LoadAesKey] = { 0xF4, 0x0C, 0x16, 0x26, 0x0D, 0x46, 0x3B, 0xE0, 0x8C, 0x6A, 0x56, 0xE5, 0x82, 0xD4, 0x1B, 0xF6 },
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[SealKey_DecryptDeviceUniqueData] = { 0x7F, 0x54, 0x2C, 0x98, 0x1E, 0x54, 0x18, 0x3B, 0xBA, 0x63, 0xBD, 0x4C, 0x13, 0x5B, 0xF1, 0x06 },
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[SealKey_ImportLotusKey] = { 0xC7, 0x3F, 0x73, 0x60, 0xB7, 0xB9, 0x9D, 0x74, 0x0A, 0xF8, 0x35, 0x60, 0x1A, 0x18, 0x74, 0x63 },
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[SealKey_ImportEsDeviceKey] = { 0x0E, 0xE0, 0xC4, 0x33, 0x82, 0x66, 0xE8, 0x08, 0x39, 0x13, 0x41, 0x7D, 0x04, 0x64, 0x2B, 0x6D },
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[SealKey_ReencryptDeviceUniqueData] = { 0xE1, 0xA8, 0xAA, 0x6A, 0x2D, 0x9C, 0xDE, 0x43, 0x0C, 0xDE, 0xC6, 0x17, 0xF6, 0xC7, 0xF1, 0xDE },
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[SealKey_ImportSslKey] = { 0x74, 0x20, 0xF6, 0x46, 0x77, 0xB0, 0x59, 0x2C, 0xE8, 0x1B, 0x58, 0x64, 0x47, 0x41, 0x37, 0xD9 },
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[SealKey_ImportEsClientCertKey] = { 0xAA, 0x19, 0x0F, 0xFA, 0x4C, 0x30, 0x3B, 0x2E, 0xE6, 0xD8, 0x9A, 0xCF, 0xE5, 0x3F, 0xB3, 0x4B },
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};
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constexpr const u8 KeyTypeSources[KeyType_Count][AesKeySize] = {
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[KeyType_Default] = { 0x4D, 0x87, 0x09, 0x86, 0xC4, 0x5D, 0x20, 0x72, 0x2F, 0xBA, 0x10, 0x53, 0xDA, 0x92, 0xE8, 0xA9 },
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[KeyType_NormalOnly] = { 0x25, 0x03, 0x31, 0xFB, 0x25, 0x26, 0x0B, 0x79, 0x8C, 0x80, 0xD2, 0x69, 0x98, 0xE2, 0x22, 0x77 },
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[KeyType_RecoveryOnly] = { 0x76, 0x14, 0x1D, 0x34, 0x93, 0x2D, 0xE1, 0x84, 0x24, 0x7B, 0x66, 0x65, 0x55, 0x04, 0x65, 0x81 },
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[KeyType_NormalAndRecovery] = { 0xAF, 0x3D, 0xB7, 0xF3, 0x08, 0xA2, 0xD8, 0xA2, 0x08, 0xCA, 0x18, 0xA8, 0x69, 0x46, 0xC9, 0x0B },
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};
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constexpr const u8 SealKeyMasks[SealKey_Count][AesKeySize] = {
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[SealKey_LoadAesKey] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 },
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[SealKey_DecryptDeviceUniqueData] = { 0xA2, 0xAB, 0xBF, 0x9C, 0x92, 0x2F, 0xBB, 0xE3, 0x78, 0x79, 0x9B, 0xC0, 0xCC, 0xEA, 0xA5, 0x74 },
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[SealKey_ImportLotusKey] = { 0x57, 0xE2, 0xD9, 0x45, 0xE4, 0x92, 0xF4, 0xFD, 0xC3, 0xF9, 0x86, 0x38, 0x89, 0x78, 0x9F, 0x3C },
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[SealKey_ImportEsDeviceKey] = { 0xE5, 0x4D, 0x9A, 0x02, 0xF0, 0x4F, 0x5F, 0xA8, 0xAD, 0x76, 0x0A, 0xF6, 0x32, 0x95, 0x59, 0xBB },
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[SealKey_ReencryptDeviceUniqueData] = { 0x59, 0xD9, 0x31, 0xF4, 0xA7, 0x97, 0xB8, 0x14, 0x40, 0xD6, 0xA2, 0x60, 0x2B, 0xED, 0x15, 0x31 },
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[SealKey_ImportSslKey] = { 0xFD, 0x6A, 0x25, 0xE5, 0xD8, 0x38, 0x7F, 0x91, 0x49, 0xDA, 0xF8, 0x59, 0xA8, 0x28, 0xE6, 0x75 },
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[SealKey_ImportEsClientCertKey] = { 0x89, 0x96, 0x43, 0x9A, 0x7C, 0xD5, 0x59, 0x55, 0x24, 0xD5, 0x24, 0x18, 0xAB, 0x6C, 0x04, 0x61 },
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};
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constexpr const SealKey DeviceUniqueDataToSealKey[DeviceUniqueData_Count] = {
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[DeviceUniqueData_DecryptDeviceUniqueData] = SealKey_DecryptDeviceUniqueData,
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[DeviceUniqueData_ImportLotusKey] = SealKey_ImportLotusKey,
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[DeviceUniqueData_ImportEsDeviceKey] = SealKey_ImportEsDeviceKey,
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[DeviceUniqueData_ImportSslKey] = SealKey_ImportSslKey,
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[DeviceUniqueData_ImportEsClientCertKey] = SealKey_ImportEsClientCertKey,
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};
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constexpr const u8 CalibrationKeySource[AesKeySize] = {
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0xE2, 0xD6, 0xB8, 0x7A, 0x11, 0x9C, 0xB8, 0x80, 0xE8, 0x22, 0x88, 0x8A, 0x46, 0xFB, 0xA1, 0x95
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};
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constexpr const u8 EsCommonKeySources[EsCommonKeyType_Count][AesKeySize] = {
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[EsCommonKeyType_TitleKey] = { 0x1E, 0xDC, 0x7B, 0x3B, 0x60, 0xE6, 0xB4, 0xD8, 0x78, 0xB8, 0x17, 0x15, 0x98, 0x5E, 0x62, 0x9B },
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[EsCommonKeyType_ArchiveKey] = { 0x3B, 0x78, 0xF2, 0x61, 0x0F, 0x9D, 0x5A, 0xE2, 0x7B, 0x4E, 0x45, 0xAF, 0xCB, 0x0B, 0x67, 0x4D },
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};
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constexpr const u8 EsSealKeySource[AesKeySize] = {
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0xCB, 0xB7, 0x6E, 0x38, 0xA1, 0xCB, 0x77, 0x0F, 0xB2, 0xA5, 0xB2, 0x9D, 0xD8, 0x56, 0x9F, 0x76
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};
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constexpr const u8 SecureDataSource[AesKeySize] = {
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0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00
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};
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constexpr const u8 SecureDataCounters[][AesKeySize] = {
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[SecureData_Calibration] = { 0x3C, 0xD5, 0x92, 0xEC, 0x68, 0x31, 0x4A, 0x06, 0xD4, 0x1B, 0x0C, 0xD9, 0xF6, 0x2E, 0xD9, 0xE9 },
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[SecureData_SafeMode] = { 0x50, 0x81, 0xCF, 0x77, 0x18, 0x11, 0xD7, 0x0D, 0x13, 0x29, 0x60, 0xED, 0x4B, 0x21, 0x3E, 0xFC },
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[SecureData_UserSystemProperEncryption] = { 0x98, 0xCB, 0x4C, 0xEB, 0x15, 0xF1, 0x4A, 0x5A, 0x7A, 0x86, 0xB6, 0xF1, 0x94, 0x66, 0xF4, 0x9D },
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};
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constexpr const u8 SecureDataTweaks[][AesKeySize] = {
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[SecureData_Calibration] = { 0xAC, 0xCA, 0x9A, 0xCA, 0xFF, 0x2E, 0xB9, 0x22, 0xCC, 0x1F, 0x4F, 0xAD, 0xDD, 0x77, 0x21, 0x1E },
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[SecureData_SafeMode] = { 0x6E, 0xF8, 0x2A, 0x1A, 0xE0, 0x4F, 0xC3, 0x20, 0x08, 0x7B, 0xBA, 0x50, 0xC0, 0xCD, 0x7B, 0x39 },
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[SecureData_UserSystemProperEncryption] = { 0x6D, 0x02, 0x56, 0x2D, 0xF4, 0x3D, 0x0A, 0x15, 0xB1, 0x34, 0x5C, 0xC2, 0x84, 0x4C, 0xD4, 0x28 },
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};
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constexpr const u8 *GetSecureDataCounter(SecureData which) {
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switch (which) {
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case SecureData_Calibration:
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return SecureDataCounters[SecureData_Calibration];
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case SecureData_SafeMode:
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return SecureDataCounters[SecureData_SafeMode];
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case SecureData_UserSystem:
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case SecureData_UserSystemProperEncryption:
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return SecureDataCounters[SecureData_UserSystemProperEncryption];
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default:
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return nullptr;
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}
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}
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constexpr const u8 *GetSecureDataTweak(SecureData which) {
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switch (which) {
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case SecureData_Calibration:
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return SecureDataTweaks[SecureData_Calibration];
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case SecureData_SafeMode:
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return SecureDataTweaks[SecureData_SafeMode];
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case SecureData_UserSystem:
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case SecureData_UserSystemProperEncryption:
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return SecureDataTweaks[SecureData_UserSystemProperEncryption];
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default:
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return nullptr;
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}
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}
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constexpr uintptr_t LinkedListAddressMinimum = secmon::MemoryRegionDram.GetAddress();
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constexpr size_t LinkedListAddressRangeSize = 4_MB - 2_KB;
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constexpr uintptr_t LinkedListAddressMaximum = LinkedListAddressMinimum + LinkedListAddressRangeSize;
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constexpr size_t LinkedListSize = 12;
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constexpr bool IsValidLinkedListAddress(uintptr_t address) {
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return LinkedListAddressMinimum <= address && address <= (LinkedListAddressMaximum - LinkedListSize);
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}
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constinit bool g_is_compute_aes_completed = false;
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void SecurityEngineDoneHandler() {
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/* Check that the compute succeeded. */
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se::ValidateAesOperationResult();
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/* End the asynchronous operation. */
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g_is_compute_aes_completed = true;
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EndAsyncOperation();
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}
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SmcResult GetComputeAesResult(void *dst, size_t size) {
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/* Arguments are unused. */
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AMS_UNUSED(dst);
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AMS_UNUSED(size);
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/* Check that the operation is completed. */
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SMC_R_UNLESS(g_is_compute_aes_completed, Busy);
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/* Unlock the security engine and succeed. */
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UnlockSecurityEngine();
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return SmcResult::Success;
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}
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int PrepareMasterKey(int generation) {
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if (generation == GetKeyGeneration()) {
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return pkg1::AesKeySlot_Master;
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}
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constexpr int Slot = pkg1::AesKeySlot_Smc;
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LoadMasterKey(Slot, generation);
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return Slot;
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}
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int PrepareDeviceMasterKey(int generation) {
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if (generation == pkg1::KeyGeneration_1_0_0) {
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return pkg1::AesKeySlot_Device;
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}
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if (generation == GetKeyGeneration()) {
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return pkg1::AesKeySlot_DeviceMaster;
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}
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constexpr int Slot = pkg1::AesKeySlot_Smc;
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LoadDeviceMasterKey(Slot, generation);
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return Slot;
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}
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void GetSecureDataImpl(u8 *dst, SecureData which, bool tweak) {
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/* Compute the appropriate AES-CTR. */
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se::ComputeAes128Ctr(dst, AesKeySize, pkg1::AesKeySlot_Device, SecureDataSource, AesKeySize, GetSecureDataCounter(which), AesKeySize);
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/* Tweak, if we should. */
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if (tweak) {
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const u8 * const tweak = GetSecureDataTweak(which);
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for (size_t i = 0; i < AesKeySize; ++i) {
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dst[i] ^= tweak[i];
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}
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}
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}
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SmcResult GenerateAesKekImpl(SmcArguments &args) {
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/* Decode arguments. */
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u8 kek_source[AesKeySize];
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std::memcpy(kek_source, std::addressof(args.r[1]), AesKeySize);
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const int generation = std::max<int>(static_cast<int>(args.r[3]) - 1, pkg1::KeyGeneration_1_0_0);
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const util::BitPack32 option = { static_cast<u32>(args.r[4]) };
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const bool is_device_unique = option.Get<GenerateAesKekOption::IsDeviceUnique>();
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const auto key_type = option.Get<GenerateAesKekOption::KeyTypeIndex>();
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const auto seal_key = option.Get<GenerateAesKekOption::SealKeyIndex>();
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const u32 reserved = option.Get<GenerateAesKekOption::Reserved>();
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/* Validate arguments. */
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SMC_R_UNLESS(reserved == 0, InvalidArgument);
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if (is_device_unique) {
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SMC_R_UNLESS(pkg1::IsValidDeviceUniqueKeyGeneration(generation), InvalidArgument);
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} else {
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SMC_R_UNLESS(pkg1::IsValidKeyGeneration(generation), InvalidArgument);
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SMC_R_UNLESS(generation <= GetKeyGeneration(), InvalidArgument);
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}
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SMC_R_UNLESS(0 <= key_type && key_type < KeyType_Count, InvalidArgument);
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SMC_R_UNLESS(0 <= seal_key && seal_key < SealKey_Count, InvalidArgument);
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switch (key_type) {
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case KeyType_NormalOnly: SMC_R_UNLESS(!IsRecoveryBoot(), InvalidArgument); break;
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case KeyType_RecoveryOnly: SMC_R_UNLESS( IsRecoveryBoot(), InvalidArgument); break;
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default: break;
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}
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/* Declare temporary data storage. */
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u8 static_source[AesKeySize];
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u8 generated_key[AesKeySize];
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u8 access_key[AesKeySize];
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/* Derive the static source. */
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for (size_t i = 0; i < sizeof(static_source); ++i) {
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static_source[i] = KeyTypeSources[key_type][i] ^ SealKeyMasks[seal_key][i];
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}
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/* Get the seal key source. */
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const u8 * const seal_key_source = SealKeySources[seal_key];
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/* Get the key slot. */
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const int slot = is_device_unique ? PrepareDeviceMasterKey(generation) : PrepareMasterKey(generation);
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/* Derive a static generation kek. */
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se::SetEncryptedAesKey128(pkg1::AesKeySlot_Smc, slot, static_source, sizeof(static_source));
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/* Decrypt the input with the static generation kek. */
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se::DecryptAes128(generated_key, sizeof(generated_key), pkg1::AesKeySlot_Smc, kek_source, sizeof(kek_source));
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/* Generate the seal key. */
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se::SetEncryptedAesKey128(pkg1::AesKeySlot_Smc, pkg1::AesKeySlot_RandomForUserWrap, seal_key_source, AesKeySize);
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/* Seal the generated key. */
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se::EncryptAes128(access_key, sizeof(access_key), pkg1::AesKeySlot_Smc, generated_key, sizeof(generated_key));
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/* Copy the access key out. */
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std::memcpy(std::addressof(args.r[1]), access_key, sizeof(access_key));
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return SmcResult::Success;
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}
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SmcResult LoadAesKeyImpl(SmcArguments &args) {
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/* Decode arguments. */
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const int slot = args.r[1];
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u8 access_key[AesKeySize];
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std::memcpy(access_key, std::addressof(args.r[2]), sizeof(access_key));
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u8 key_source[AesKeySize];
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std::memcpy(key_source, std::addressof(args.r[4]), sizeof(key_source));
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/* Validate arguments. */
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SMC_R_UNLESS(pkg1::IsUserAesKeySlot(slot), InvalidArgument);
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|
/* Get the seal key source. */
|
|
constexpr const u8 * const SealKeySource = SealKeySources[SealKey_LoadAesKey];
|
|
|
|
/* Derive the seal key. */
|
|
se::SetEncryptedAesKey128(pkg1::AesKeySlot_Smc, pkg1::AesKeySlot_RandomForUserWrap, SealKeySource, AesKeySize);
|
|
|
|
/* Unseal the access key. */
|
|
se::SetEncryptedAesKey128(pkg1::AesKeySlot_Smc, pkg1::AesKeySlot_Smc, access_key, sizeof(access_key));
|
|
|
|
/* Derive the key. */
|
|
se::SetEncryptedAesKey128(slot, pkg1::AesKeySlot_Smc, key_source, sizeof(key_source));
|
|
|
|
return SmcResult::Success;
|
|
}
|
|
|
|
SmcResult ComputeAesImpl(SmcArguments &args) {
|
|
/* Decode arguments. */
|
|
u8 iv[se::AesBlockSize];
|
|
|
|
const util::BitPack32 option = { static_cast<u32>(args.r[1]) };
|
|
std::memcpy(iv, std::addressof(args.r[2]), sizeof(iv));
|
|
const u32 input_address = args.r[4];
|
|
const u32 output_address = args.r[5];
|
|
const u32 size = args.r[6];
|
|
|
|
const int slot = option.Get<ComputeAesOption::KeySlot>();
|
|
const auto cipher_mode = option.Get<ComputeAesOption::CipherModeIndex>();
|
|
|
|
/* Validate arguments. */
|
|
SMC_R_UNLESS(pkg1::IsUserAesKeySlot(slot), InvalidArgument);
|
|
SMC_R_UNLESS(util::IsAligned(size, se::AesBlockSize), InvalidArgument);
|
|
SMC_R_UNLESS(IsValidLinkedListAddress(input_address), InvalidArgument);
|
|
SMC_R_UNLESS(IsValidLinkedListAddress(output_address), InvalidArgument);
|
|
|
|
/* We're starting an aes operation, so reset the completion status. */
|
|
g_is_compute_aes_completed = false;
|
|
|
|
/* Dispatch the correct aes operation asynchronously. */
|
|
switch (cipher_mode) {
|
|
case CipherMode_CbcEncryption: se::EncryptAes128CbcAsync(output_address, slot, input_address, size, iv, sizeof(iv), SecurityEngineDoneHandler); break;
|
|
case CipherMode_CbcDecryption: se::DecryptAes128CbcAsync(output_address, slot, input_address, size, iv, sizeof(iv), SecurityEngineDoneHandler); break;
|
|
case CipherMode_Ctr: se::ComputeAes128CtrAsync(output_address, slot, input_address, size, iv, sizeof(iv), SecurityEngineDoneHandler); break;
|
|
case CipherMode_Cmac:
|
|
return SmcResult::NotImplemented;
|
|
default:
|
|
return SmcResult::InvalidArgument;
|
|
}
|
|
|
|
return SmcResult::Success;
|
|
}
|
|
|
|
SmcResult GenerateSpecificAesKeyImpl(SmcArguments &args) {
|
|
/* Decode arguments. */
|
|
u8 key_source[AesKeySize];
|
|
std::memcpy(key_source, std::addressof(args.r[1]), sizeof(key_source));
|
|
|
|
const int generation = GetTargetFirmware() >= TargetFirmware_4_0_0 ? std::max<int>(static_cast<int>(args.r[3]) - 1, pkg1::KeyGeneration_1_0_0) : pkg1::KeyGeneration_1_0_0;
|
|
const auto which = static_cast<SpecificAesKey>(args.r[4]);
|
|
|
|
/* Validate arguments. */
|
|
SMC_R_UNLESS(pkg1::IsValidKeyGeneration(generation), InvalidArgument);
|
|
SMC_R_UNLESS(which < SpecificAesKey_Count, InvalidArgument);
|
|
|
|
/* Generate the specific aes key. */
|
|
u8 output_key[AesKeySize];
|
|
if (fuse::GetPatchVersion() >= fuse::PatchVersion_Odnx02A2) {
|
|
const int slot = PrepareDeviceMasterKey(generation);
|
|
se::SetEncryptedAesKey128(pkg1::AesKeySlot_Smc, slot, CalibrationKeySource, sizeof(CalibrationKeySource));
|
|
se::DecryptAes128(output_key, sizeof(output_key), pkg1::AesKeySlot_Smc, key_source, sizeof(key_source));
|
|
} else {
|
|
GetSecureDataImpl(output_key, SecureData_Calibration, which == SpecificAesKey_CalibrationEncryption1);
|
|
}
|
|
|
|
/* Copy the key to output. */
|
|
std::memcpy(std::addressof(args.r[1]), output_key, sizeof(output_key));
|
|
return SmcResult::Success;
|
|
}
|
|
|
|
SmcResult ComputeCmacImpl(SmcArguments &args) {
|
|
/* Decode arguments. */
|
|
const int slot = args.r[1];
|
|
const uintptr_t data_address = args.r[2];
|
|
const size_t data_size = args.r[3];
|
|
|
|
/* Declare buffer for user data. */
|
|
alignas(8) u8 user_data[CmacSizeMax];
|
|
|
|
/* Validate arguments. */
|
|
SMC_R_UNLESS(pkg1::IsUserAesKeySlot(slot), InvalidArgument);
|
|
SMC_R_UNLESS(data_size <= sizeof(user_data), InvalidArgument);
|
|
|
|
/* Map the user data, and copy to stack. */
|
|
{
|
|
UserPageMapper mapper(data_address);
|
|
SMC_R_UNLESS(mapper.Map(), InvalidArgument);
|
|
SMC_R_UNLESS(mapper.CopyFromUser(user_data, data_address, data_size), InvalidArgument);
|
|
}
|
|
|
|
/* Ensure the SE sees consistent data. */
|
|
hw::FlushDataCache(user_data, data_size);
|
|
hw::DataSynchronizationBarrierInnerShareable();
|
|
|
|
/* Compute the mac. */
|
|
{
|
|
u8 mac[se::AesBlockSize];
|
|
se::ComputeAes128Cmac(mac, sizeof(mac), slot, user_data, data_size);
|
|
|
|
std::memcpy(std::addressof(args.r[1]), mac, sizeof(mac));
|
|
}
|
|
|
|
return SmcResult::Success;
|
|
}
|
|
|
|
SmcResult LoadPreparedAesKeyImpl(SmcArguments &args) {
|
|
/* Decode arguments. */
|
|
u8 access_key[AesKeySize];
|
|
|
|
const int slot = args.r[1];
|
|
std::memcpy(access_key, std::addressof(args.r[2]), sizeof(access_key));
|
|
|
|
/* Validate arguments. */
|
|
SMC_R_UNLESS(pkg1::IsUserAesKeySlot(slot), InvalidArgument);
|
|
|
|
/* Derive the seal key. */
|
|
se::SetEncryptedAesKey128(pkg1::AesKeySlot_Smc, pkg1::AesKeySlot_RandomForUserWrap, EsSealKeySource, sizeof(EsSealKeySource));
|
|
|
|
/* Unseal the key. */
|
|
se::SetEncryptedAesKey128(slot, pkg1::AesKeySlot_Smc, access_key, sizeof(access_key));
|
|
|
|
return SmcResult::Success;
|
|
}
|
|
|
|
SmcResult PrepareEsCommonTitleKeyImpl(SmcArguments &args) {
|
|
/* Declare variables. */
|
|
u8 key_source[se::AesBlockSize];
|
|
u8 key[se::AesBlockSize];
|
|
u8 access_key[se::AesBlockSize];
|
|
|
|
/* Decode arguments. */
|
|
std::memcpy(key_source, std::addressof(args.r[1]), sizeof(key_source));
|
|
const int generation = GetTargetFirmware() >= TargetFirmware_3_0_0 ? std::max(0, static_cast<int>(args.r[3]) - 1) : 0;
|
|
|
|
/* Validate arguments. */
|
|
SMC_R_UNLESS(pkg1::IsValidKeyGeneration(generation), InvalidArgument);
|
|
SMC_R_UNLESS(generation <= GetKeyGeneration(), InvalidArgument);
|
|
|
|
/* Derive the key. */
|
|
DecryptWithEsCommonKey(key, sizeof(key), key_source, sizeof(key_source), EsCommonKeyType_TitleKey, generation);
|
|
|
|
/* Prepare the aes key. */
|
|
PrepareEsAesKey(access_key, sizeof(access_key), key, sizeof(key));
|
|
|
|
/* Copy the access key to output. */
|
|
std::memcpy(std::addressof(args.r[1]), access_key, sizeof(access_key));
|
|
|
|
return SmcResult::Success;
|
|
}
|
|
|
|
SmcResult DecryptDeviceUniqueDataImpl(SmcArguments &args) {
|
|
/* Decode arguments. */
|
|
u8 access_key[se::AesBlockSize];
|
|
u8 key_source[se::AesBlockSize];
|
|
|
|
std::memcpy(access_key, std::addressof(args.r[1]), sizeof(access_key));
|
|
const util::BitPack32 option = { static_cast<u32>(args.r[3]) };
|
|
const uintptr_t data_address = args.r[4];
|
|
const size_t data_size = args.r[5];
|
|
std::memcpy(key_source, std::addressof(args.r[6]), sizeof(key_source));
|
|
|
|
const auto mode = option.Get<DecryptDeviceUniqueDataOption::DeviceUniqueDataIndex>();
|
|
const auto reserved = option.Get<DecryptDeviceUniqueDataOption::Reserved>();
|
|
|
|
/* Validate arguments. */
|
|
SMC_R_UNLESS(reserved == 0, InvalidArgument);
|
|
switch (mode) {
|
|
case DeviceUniqueData_DecryptDeviceUniqueData:
|
|
{
|
|
SMC_R_UNLESS(data_size < DeviceUniqueDataSizeMax, InvalidArgument);
|
|
}
|
|
break;
|
|
case DeviceUniqueData_ImportLotusKey:
|
|
case DeviceUniqueData_ImportEsDeviceKey:
|
|
case DeviceUniqueData_ImportSslKey:
|
|
case DeviceUniqueData_ImportEsClientCertKey:
|
|
{
|
|
SMC_R_UNLESS(DeviceUniqueDataSizeMin <= data_size && data_size <= DeviceUniqueDataSizeMax, InvalidArgument);
|
|
}
|
|
break;
|
|
default:
|
|
return SmcResult::InvalidArgument;
|
|
}
|
|
|
|
/* Decrypt the device unique data. */
|
|
u8 work_buffer[DeviceUniqueDataSizeMax];
|
|
ON_SCOPE_EXIT { crypto::ClearMemory(work_buffer, sizeof(work_buffer)); };
|
|
{
|
|
/* Map and copy in the encrypted data. */
|
|
UserPageMapper mapper(data_address);
|
|
SMC_R_UNLESS(mapper.Map(), InvalidArgument);
|
|
SMC_R_UNLESS(mapper.CopyFromUser(work_buffer, data_address, data_size), InvalidArgument);
|
|
|
|
/* Determine the seal key to use. */
|
|
const auto seal_key_type = DeviceUniqueDataToSealKey[mode];
|
|
const u8 * const seal_key_source = SealKeySources[seal_key_type];
|
|
|
|
/* Decrypt the data. */
|
|
if (!DecryptDeviceUniqueData(work_buffer, data_size, nullptr, seal_key_source, se::AesBlockSize, access_key, sizeof(access_key), key_source, sizeof(key_source), work_buffer, data_size)) {
|
|
return SmcResult::InvalidArgument;
|
|
}
|
|
|
|
/* Either output the key, or import it. */
|
|
switch (mode) {
|
|
case DeviceUniqueData_DecryptDeviceUniqueData:
|
|
{
|
|
SMC_R_UNLESS(mapper.CopyToUser(data_address, work_buffer, data_size), InvalidArgument);
|
|
}
|
|
break;
|
|
case DeviceUniqueData_ImportLotusKey:
|
|
case DeviceUniqueData_ImportSslKey:
|
|
ImportRsaKeyExponent(ConvertToImportRsaKey(mode), work_buffer, se::RsaSize);
|
|
break;
|
|
case DeviceUniqueData_ImportEsDeviceKey:
|
|
case DeviceUniqueData_ImportEsClientCertKey:
|
|
ImportRsaKeyExponent(ConvertToImportRsaKey(mode), work_buffer, se::RsaSize);
|
|
ImportRsaKeyModulusProvisionally(ConvertToImportRsaKey(mode), work_buffer + se::RsaSize, se::RsaSize);
|
|
CommitRsaKeyModulus(ConvertToImportRsaKey(mode));
|
|
break;
|
|
AMS_UNREACHABLE_DEFAULT_CASE();
|
|
}
|
|
}
|
|
|
|
return SmcResult::Success;
|
|
}
|
|
|
|
SmcResult GetSecureDataImpl(SmcArguments &args) {
|
|
/* Decode arguments. */
|
|
const auto which = static_cast<SecureData>(args.r[1]);
|
|
|
|
/* Validate arguments/conditions. */
|
|
SMC_R_UNLESS(fuse::GetPatchVersion() < fuse::PatchVersion_Odnx02A2, NotImplemented);
|
|
SMC_R_UNLESS(which < SecureData_Count, NotImplemented);
|
|
|
|
/* Use a temporary buffer. */
|
|
u8 secure_data[AesKeySize];
|
|
GetSecureDataImpl(secure_data, which, false);
|
|
|
|
/* Copy out. */
|
|
std::memcpy(std::addressof(args.r[1]), secure_data, sizeof(secure_data));
|
|
return SmcResult::Success;
|
|
}
|
|
|
|
}
|
|
|
|
/* Aes functionality. */
|
|
SmcResult SmcGenerateAesKek(SmcArguments &args) {
|
|
return LockSecurityEngineAndInvoke(args, GenerateAesKekImpl);
|
|
}
|
|
|
|
SmcResult SmcLoadAesKey(SmcArguments &args) {
|
|
return LockSecurityEngineAndInvoke(args, LoadAesKeyImpl);
|
|
}
|
|
|
|
SmcResult SmcComputeAes(SmcArguments &args) {
|
|
return LockSecurityEngineAndInvokeAsync(args, ComputeAesImpl, GetComputeAesResult);
|
|
}
|
|
|
|
SmcResult SmcGenerateSpecificAesKey(SmcArguments &args) {
|
|
return LockSecurityEngineAndInvoke(args, GenerateSpecificAesKeyImpl);
|
|
}
|
|
|
|
SmcResult SmcComputeCmac(SmcArguments &args) {
|
|
return LockSecurityEngineAndInvoke(args, ComputeCmacImpl);
|
|
}
|
|
|
|
SmcResult SmcLoadPreparedAesKey(SmcArguments &args) {
|
|
return LockSecurityEngineAndInvoke(args, LoadPreparedAesKeyImpl);
|
|
}
|
|
|
|
SmcResult SmcPrepareEsCommonTitleKey(SmcArguments &args) {
|
|
return LockSecurityEngineAndInvoke(args, PrepareEsCommonTitleKeyImpl);
|
|
}
|
|
|
|
/* Device unique data functionality. */
|
|
SmcResult SmcDecryptDeviceUniqueData(SmcArguments &args) {
|
|
return LockSecurityEngineAndInvoke(args, DecryptDeviceUniqueDataImpl);
|
|
}
|
|
|
|
SmcResult SmcReencryptDeviceUniqueData(SmcArguments &args) {
|
|
/* TODO */
|
|
return SmcResult::NotImplemented;
|
|
}
|
|
|
|
/* Legacy APIs. */
|
|
SmcResult SmcDecryptAndImportEsDeviceKey(SmcArguments &args) {
|
|
/* TODO */
|
|
return SmcResult::NotImplemented;
|
|
}
|
|
|
|
SmcResult SmcDecryptAndImportLotusKey(SmcArguments &args) {
|
|
/* TODO */
|
|
return SmcResult::NotImplemented;
|
|
}
|
|
|
|
/* Es encryption utilities. */
|
|
void DecryptWithEsCommonKey(void *dst, size_t dst_size, const void *src, size_t src_size, EsCommonKeyType type, int generation) {
|
|
/* Validate pre-conditions. */
|
|
AMS_ABORT_UNLESS(dst_size == AesKeySize);
|
|
AMS_ABORT_UNLESS(src_size == AesKeySize);
|
|
AMS_ABORT_UNLESS(0 <= type && type < EsCommonKeyType_Count);
|
|
|
|
/* Prepare the master key for the generation. */
|
|
const int slot = PrepareMasterKey(generation);
|
|
|
|
/* Derive the es common key. */
|
|
se::SetEncryptedAesKey128(pkg1::AesKeySlot_Smc, slot, EsCommonKeySources[type], AesKeySize);
|
|
|
|
/* Decrypt the input using the common key. */
|
|
se::DecryptAes128(dst, dst_size, pkg1::AesKeySlot_Smc, src, src_size);
|
|
}
|
|
|
|
void PrepareEsAesKey(void *dst, size_t dst_size, const void *src, size_t src_size) {
|
|
/* Validate pre-conditions. */
|
|
AMS_ABORT_UNLESS(dst_size == AesKeySize);
|
|
AMS_ABORT_UNLESS(src_size == AesKeySize);
|
|
|
|
/* Derive the seal key. */
|
|
se::SetEncryptedAesKey128(pkg1::AesKeySlot_Smc, pkg1::AesKeySlot_RandomForUserWrap, EsSealKeySource, sizeof(EsSealKeySource));
|
|
|
|
/* Seal the key. */
|
|
se::EncryptAes128(dst, dst_size, pkg1::AesKeySlot_Smc, src, src_size);
|
|
}
|
|
|
|
/* 'Tis the last rose of summer, / Left blooming alone; */
|
|
/* Oh! who would inhabit / This bleak world alone? */
|
|
SmcResult SmcGetSecureData(SmcArguments &args) {
|
|
return LockSecurityEngineAndInvoke(args, GetSecureDataImpl);
|
|
}
|
|
|
|
}
|