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fs: utilities for hac2l to print gc headers

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This commit is contained in:
Michael Scire 2022-03-14 14:26:45 -07:00
parent 13b63af15e
commit 1313427b5d
15 changed files with 893 additions and 3 deletions
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2
libraries/libstratosphere/include/stratosphere/fs/fs_game_card.hpp
View file

@ -38,7 +38,7 @@ namespace ams::fs {
GameCardAttribute_DifferentRegionCupToTerraDeviceFlag = (1 << 3),
GameCardAttribute_DifferentRegionCupToGlobalDeviceFlag = (1 << 4),
GameCardAttribute_HasHeaderSign2Flag = (1 << 7),
GameCardAttribute_HasCa10CertificateFlag = (1 << 7),
};
enum class GameCardCompatibilityType : u8 {

9
libraries/libstratosphere/include/stratosphere/gc/impl/gc_embedded_data_holder.hpp
View file

@ -40,8 +40,17 @@ namespace ams::gc::impl {
static const void *s_ca10_modulus;
static const void *s_ca10_certificate_modulus;
static const void *s_card_header_key;
private:
static constinit inline u8 s_titlekey_keks[GcCrypto::GcTitleKeyKekIndexMax][GcCrypto::GcAesKeyLength] = {};
public:
static Result SetLibraryEmbeddedKeys(bool is_dev = GcCrypto::CheckDevelopmentSpl());
static void SetLibraryTitleKeyKek(size_t kek_index, const void *kek, size_t kek_size) {
AMS_ASSERT(kek_index < GcCrypto::GcTitleKeyKekIndexMax);
AMS_ASSERT(kek_size == GcCrypto::GcAesKeyLength);
std::memcpy(s_titlekey_keks[kek_index], kek, sizeof(s_titlekey_keks[kek_index]));
}
private:
static Result DecryptoEmbeddedKeys(ConcatenatedGcLibraryEmbeddedKeys *out, size_t out_size, bool is_dev = GcCrypto::CheckDevelopmentSpl());
};

3
libraries/libstratosphere/include/stratosphere/gc/impl/gc_gc_crypto.hpp
View file

@ -29,6 +29,7 @@ namespace ams::gc::impl {
static constexpr size_t GcAesCbcIvLength = crypto::Aes128CbcEncryptor::IvSize;
static constexpr size_t GcHmacKeyLength = 0x20;
static constexpr size_t GcCvConstLength = 0x10;
static constexpr size_t GcTitleKeyKekIndexMax = 0x10;
static constexpr size_t GcSha256HashLength = crypto::Sha256Generator::HashSize;
public:
static bool CheckDevelopmentSpl();
@ -42,6 +43,8 @@ namespace ams::gc::impl {
static Result VerifyT1CardCertificate(const void *cert_buffer, size_t cert_size);
static Result VerifyCa10Certificate(const void *cert_buffer, size_t cert_size);
static Result DecryptCardInitialData(void *dst, size_t dst_size, const void *initial_data, size_t data_size, size_t kek_index);
};
}

24
libraries/libstratosphere/include/stratosphere/gc/impl/gc_types.hpp
View file

@ -35,8 +35,22 @@ namespace ams::gc::impl {
static_assert(util::is_pod<CardInitialData>::value);
static_assert(sizeof(CardInitialData) == 0x200);
enum FwVersion : u8 {
FwVersion_ForDev = 0,
FwVersion_1_0_0 = 1,
FwVersion_4_0_0 = 2,
FwVersion_9_0_0 = 3,
FwVersion_11_0_0 = 4,
FwVersion_12_0_0 = 5,
};
enum KekIndex : u8 {
KekIndex_Version0 = 0,
KekIndex_VersionForDev = 1,
};
struct CardHeaderKeyIndex {
using KekIndex = util::BitPack8::Field<0, 4, u8>;
using KekIndex = util::BitPack8::Field<0, 4, gc::impl::KekIndex>;
using TitleKeyDecIndex = util::BitPack8::Field<KekIndex::Next, 4, u8>;
static_assert(TitleKeyDecIndex::Next == BITSIZEOF(u8));
@ -76,6 +90,11 @@ namespace ams::gc::impl {
AccessControl1ClockRate_50MHz = 0x00A10010,
};
enum SelSec : u8 {
SelSec_T1 = 1,
SelSec_T2 = 2,
};
struct CardHeader {
static constexpr u32 Magic = util::FourCC<'H','E','A','D'>::Code;
@ -135,8 +154,9 @@ namespace ams::gc::impl {
struct Ca10Certificate {
u8 signature[crypto::Rsa2048Pkcs1Sha256Verifier::SignatureSize];
u8 unk_100[0x200];
u8 unk_100[0x30];
u8 modulus[crypto::Rsa2048Pkcs1Sha256Verifier::ModulusSize];
u8 unk_230[0x1D0];
};
static_assert(util::is_pod<Ca10Certificate>::value);
static_assert(sizeof(Ca10Certificate) == 0x400);

62
libraries/libstratosphere/source/fs/fs_access_log.cpp
View file

@ -268,6 +268,68 @@ namespace ams::fs::impl {
}
}
template<> const char *IdString::ToString<gc::impl::MemoryCapacity>(gc::impl::MemoryCapacity id) {
switch (id) {
using enum gc::impl::MemoryCapacity;
case MemoryCapacity_1GB: return "1GB";
case MemoryCapacity_2GB: return "2GB";
case MemoryCapacity_4GB: return "4GB";
case MemoryCapacity_8GB: return "8GB";
case MemoryCapacity_16GB: return "16GB";
case MemoryCapacity_32GB: return "32GB";
default: return ToValueString(static_cast<int>(id));
}
}
template<> const char *IdString::ToString<gc::impl::SelSec>(gc::impl::SelSec id) {
switch (id) {
using enum gc::impl::SelSec;
case SelSec_T1: return "T1";
case SelSec_T2: return "T2";
default: return ToValueString(static_cast<int>(id));
}
}
template<> const char *IdString::ToString<gc::impl::KekIndex>(gc::impl::KekIndex id) {
switch (id) {
using enum gc::impl::KekIndex;
case KekIndex_Version0: return "Version0";
case KekIndex_VersionForDev: return "VersionForDev";
default: return ToValueString(static_cast<int>(id));
}
}
template<> const char *IdString::ToString<gc::impl::AccessControl1ClockRate>(gc::impl::AccessControl1ClockRate id) {
switch (id) {
using enum gc::impl::AccessControl1ClockRate;
case AccessControl1ClockRate_25MHz: return "25 MHz";
case AccessControl1ClockRate_50MHz: return "50 MHz";
default: return ToValueString(static_cast<int>(id));
}
}
template<> const char *IdString::ToString<gc::impl::FwVersion>(gc::impl::FwVersion id) {
switch (id) {
using enum gc::impl::FwVersion;
case FwVersion_ForDev: return "ForDev";
case FwVersion_1_0_0: return "1.0.0";
case FwVersion_4_0_0: return "4.0.0";
case FwVersion_9_0_0: return "9.0.0";
case FwVersion_11_0_0: return "11.0.0";
case FwVersion_12_0_0: return "12.0.0";
default: return ToValueString(static_cast<int>(id));
}
}
template<> const char *IdString::ToString<fs::GameCardCompatibilityType>(fs::GameCardCompatibilityType id) {
switch (id) {
using enum fs::GameCardCompatibilityType;
ADD_ENUM_CASE(Normal);
ADD_ENUM_CASE(Terra);
default: return ToValueString(static_cast<int>(id));
}
}
template<> const char *IdString::ToString<fssrv::impl::AccessControlBits::Bits>(fssrv::impl::AccessControlBits::Bits id) {
switch (id) {
using enum fssrv::impl::AccessControlBits::Bits;

41
libraries/libstratosphere/source/gc/impl/gc_gc_crypto.cpp
View file

@ -132,4 +132,45 @@ namespace ams::gc::impl {
R_SUCCEED();
}
Result GcCrypto::DecryptCardInitialData(void *dst, size_t dst_size, const void *initial_data, size_t data_size, size_t kek_index) {
/* Check pre-conditions. */
R_UNLESS(data_size == sizeof(CardInitialData), fs::ResultGameCardPreconditionViolation());
R_UNLESS(kek_index < GcTitleKeyKekIndexMax, fs::ResultGameCardPreconditionViolation());
/* Verify the kek is preset. */
const void * const kek = EmbeddedDataHolder::s_titlekey_keks[kek_index];
{
u8 zeros[GcAesKeyLength] = {};
R_UNLESS(!crypto::IsSameBytes(kek, zeros, sizeof(zeros)), fs::ResultGameCardPreconditionViolation());
}
/*Generate the key. */
u8 key[GcAesKeyLength];
{
crypto::AesDecryptor128 aes;
aes.Initialize(kek, GcAesKeyLength);
aes.DecryptBlock(key, sizeof(key), initial_data, 0x10);
}
/* Get data buffer as type. */
const auto * const data = static_cast<const CardInitialData *>(initial_data);
R_UNLESS(dst_size == sizeof(data->payload.auth_data), fs::ResultGameCardPreconditionViolation());
/* Verify padding is all-zero. */
bool any_nonzero = false;
for (size_t i = 0; i < util::size(data->padding); ++i) {
any_nonzero |= data->padding[i] != 0;
}
R_UNLESS(!any_nonzero, fs::ResultGameCardInitialNotFilledWithZero());
/* Decrypt the auth data. */
u8 mac[sizeof(data->payload.auth_mac)];
crypto::DecryptAes128Ccm(dst, dst_size, mac, sizeof(mac), key, GcAesKeyLength, data->payload.auth_nonce, sizeof(data->payload.auth_nonce), data->payload.auth_data, sizeof(data->payload.auth_data), nullptr, 0, sizeof(mac));
/* Check the mac. */
R_UNLESS(crypto::IsSameBytes(mac, data->payload.auth_mac, sizeof(mac)), fs::ResultGameCardKekIndexMismatch());
R_SUCCEED();
}
}

1
libraries/libvapours/include/vapours/crypto.hpp
View file

@ -26,6 +26,7 @@
#include <vapours/crypto/crypto_aes_encryptor.hpp>
#include <vapours/crypto/crypto_aes_decryptor.hpp>
#include <vapours/crypto/crypto_aes_cbc_encryptor_decryptor.hpp>
#include <vapours/crypto/crypto_aes_ccm_encryptor_decryptor.hpp>
#include <vapours/crypto/crypto_aes_ctr_encryptor_decryptor.hpp>
#include <vapours/crypto/crypto_aes_xts_encryptor_decryptor.hpp>
#include <vapours/crypto/crypto_aes_gcm_encryptor.hpp>

115
libraries/libvapours/include/vapours/crypto/crypto_aes_ccm_encryptor_decryptor.hpp Normal file
View file

@ -0,0 +1,115 @@
/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#include <vapours/util.hpp>
#include <vapours/crypto/crypto_aes_encryptor.hpp>
#include <vapours/crypto/crypto_ccm_encryptor.hpp>
#include <vapours/crypto/crypto_ccm_decryptor.hpp>
namespace ams::crypto {
namespace impl {
template<template<typename> typename _CcmImpl, typename _AesImpl>
class AesCcmCryptor {
NON_COPYABLE(AesCcmCryptor);
NON_MOVEABLE(AesCcmCryptor);
private:
using AesImpl = _AesImpl;
using CcmImpl = _CcmImpl<AesImpl>;
public:
static constexpr size_t KeySize = CcmImpl::KeySize;
static constexpr size_t BlockSize = CcmImpl::BlockSize;
static constexpr size_t MaxMacSize = CcmImpl::MaxMacSize;
static constexpr size_t MaxNonceSize = CcmImpl::MaxNonceSize;
private:
AesImpl m_aes_impl;
CcmImpl m_ccm_impl;
public:
AesCcmCryptor() { /* ... */ }
void Initialize(const void *key, size_t key_size, const void *nonce, size_t nonce_size, s64 aad_size, s64 data_size, size_t mac_size) {
AMS_ASSERT(key_size == KeySize);
AMS_ASSERT(nonce_size <= MaxNonceSize);
AMS_ASSERT(mac_size <= MaxMacSize);
m_aes_impl.Initialize(key, key_size);
m_ccm_impl.Initialize(std::addressof(m_aes_impl), nonce, nonce_size, aad_size, data_size, mac_size);
}
size_t Update(void *dst, size_t dst_size, const void *src, size_t src_size) {
return m_ccm_impl.Update(dst, dst_size, src, src_size);
}
void UpdateAad(const void *aad, size_t aad_size) {
return m_ccm_impl.UpdateAad(aad, aad_size);
}
void GetMac(void *dst, size_t dst_size) {
return m_ccm_impl.GetMac(dst, dst_size);
}
};
}
using Aes128CcmEncryptor = impl::AesCcmCryptor<CcmEncryptor, AesEncryptor128>;
using Aes128CcmDecryptor = impl::AesCcmCryptor<CcmDecryptor, AesEncryptor128>;
inline size_t EncryptAes128Ccm(void *dst, size_t dst_size, void *mac, size_t mac_buf_size, const void *key, size_t key_size, const void *nonce, size_t nonce_size, const void *src, size_t src_size, const void *aad, size_t aad_size, size_t mac_size) {
/* Create encryptor. */
Aes128CcmEncryptor ccm;
ccm.Initialize(key, key_size, nonce, nonce_size, aad_size, src_size, mac_size);
/* Process aad. */
if (aad_size > 0) {
ccm.UpdateAad(aad, aad_size);
}
/* Process data. */
size_t processed = 0;
if (src_size > 0) {
processed = ccm.Update(dst, dst_size, src, src_size);
}
/* Get mac. */
ccm.GetMac(mac, mac_buf_size);
return processed;
}
inline size_t DecryptAes128Ccm(void *dst, size_t dst_size, void *mac, size_t mac_buf_size, const void *key, size_t key_size, const void *nonce, size_t nonce_size, const void *src, size_t src_size, const void *aad, size_t aad_size, size_t mac_size) {
/* Create decryptor. */
Aes128CcmDecryptor ccm;
ccm.Initialize(key, key_size, nonce, nonce_size, aad_size, src_size, mac_size);
/* Process aad. */
if (aad_size > 0) {
ccm.UpdateAad(aad, aad_size);
}
/* Process data. */
size_t processed = 0;
if (src_size > 0) {
processed = ccm.Update(dst, dst_size, src, src_size);
}
/* Get mac. */
ccm.GetMac(mac, mac_buf_size);
return processed;
}
}

58
libraries/libvapours/include/vapours/crypto/crypto_ccm_decryptor.hpp Normal file
View file

@ -0,0 +1,58 @@
/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#include <vapours/util.hpp>
#include <vapours/crypto/impl/crypto_ccm_mode_impl.hpp>
namespace ams::crypto {
template<typename BlockCipher>
class CcmDecryptor {
NON_COPYABLE(CcmDecryptor);
NON_MOVEABLE(CcmDecryptor);
private:
using Impl = impl::CcmModeImpl<BlockCipher>;
public:
static constexpr size_t KeySize = Impl::KeySize;
static constexpr size_t BlockSize = Impl::BlockSize;
static constexpr size_t MaxMacSize = BlockSize;
static constexpr size_t MaxNonceSize = 13;
private:
Impl m_impl;
public:
CcmDecryptor() { /* ... */ }
void Initialize(const BlockCipher *cipher, const void *nonce, size_t nonce_size, s64 aad_size, s64 data_size, size_t mac_size) {
m_impl.Initialize(cipher, nonce, nonce_size, aad_size, data_size, mac_size);
}
size_t Update(void *dst, size_t dst_size, const void *src, size_t src_size) {
return m_impl.UpdateDecryption(dst, dst_size, src, src_size);
}
void UpdateAad(const void *aad, size_t aad_size) {
return m_impl.UpdateAad(aad, aad_size);
}
void GetMac(void *dst, size_t dst_size) {
return m_impl.GetMac(dst, dst_size);
}
};
}

58
libraries/libvapours/include/vapours/crypto/crypto_ccm_encryptor.hpp Normal file
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@ -0,0 +1,58 @@
/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#include <vapours/util.hpp>
#include <vapours/crypto/impl/crypto_ccm_mode_impl.hpp>
namespace ams::crypto {
template<typename BlockCipher>
class CcmEncryptor {
NON_COPYABLE(CcmEncryptor);
NON_MOVEABLE(CcmEncryptor);
private:
using Impl = impl::CcmModeImpl<BlockCipher>;
public:
static constexpr size_t KeySize = Impl::KeySize;
static constexpr size_t BlockSize = Impl::BlockSize;
static constexpr size_t MaxMacSize = BlockSize;
static constexpr size_t MaxNonceSize = 13;
private:
Impl m_impl;
public:
CcmEncryptor() { /* ... */ }
void Initialize(const BlockCipher *cipher, const void *nonce, size_t nonce_size, s64 aad_size, s64 data_size, size_t mac_size) {
m_impl.Initialize(cipher, nonce, nonce_size, aad_size, data_size, mac_size);
}
size_t Update(void *dst, size_t dst_size, const void *src, size_t src_size) {
return m_impl.UpdateEncryption(dst, dst_size, src, src_size);
}
void UpdateAad(const void *aad, size_t aad_size) {
return m_impl.UpdateAad(aad, aad_size);
}
void GetMac(void *dst, size_t dst_size) {
return m_impl.GetMac(dst, dst_size);
}
};
}

103
libraries/libvapours/include/vapours/crypto/impl/crypto_cbc_mac_impl.hpp Normal file
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@ -0,0 +1,103 @@
/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#include <vapours/util.hpp>
#include <vapours/crypto/crypto_memory_clear.hpp>
#include <vapours/crypto/crypto_aes_encryptor.hpp>
namespace ams::crypto::impl {
class CbcMacImpl {
NON_COPYABLE(CbcMacImpl);
NON_MOVEABLE(CbcMacImpl);
public:
static constexpr size_t BlockSize = 0x10;
private:
enum State {
State_None,
State_Initialized,
State_Done,
};
private:
u8 m_mac[BlockSize];
u8 m_buffer[BlockSize];
size_t m_buffered_bytes;
const void *m_cipher_context;
void (*m_cipher_function)(void *dst, const void *src, const void *ctx);
State m_state;
public:
CbcMacImpl() : m_buffered_bytes(0), m_state(State_None) { /* ... */ }
~CbcMacImpl() {
ClearMemory(this, sizeof(*this));
}
template<typename BlockCipher>
void Initialize(const BlockCipher *block_cipher) {
static_assert(BlockCipher::BlockSize == BlockSize);
/* Set our context. */
m_cipher_context = block_cipher;
m_cipher_function = &EncryptBlockCallback<BlockCipher>;
m_buffered_bytes = 0;
std::memset(m_mac, 0, sizeof(m_mac));
m_state = State_Initialized;
}
template<typename BlockCipher>
void Update(const void *data, size_t size) {
this->UpdateGeneric(data, size);
}
template<typename BlockCipher>
void ProcessBlocks(const void *data, size_t size) {
this->ProcessBlocksGeneric(data, size);
}
size_t GetBlockSize() const {
return BlockSize;
}
size_t GetBufferedDataSize() const {
return m_buffered_bytes;
}
void UpdateGeneric(const void *data, size_t size);
void ProcessBlocksGeneric(const void *data, size_t num_blocks);
void ProcessPartialData(const void *data, size_t size);
void ProcessRemainingData(const void *data, size_t size);
void GetMac(void *mac, size_t mac_size);
void MaskBufferedData(const void *data, size_t size);
private:
void ProcessBlock(const void *data);
template<typename BlockCipher>
static void EncryptBlockCallback(void *dst, const void *src, const void *cipher) {
static_assert(BlockCipher::BlockSize == BlockSize);
static_cast<const BlockCipher *>(cipher)->EncryptBlock(dst, BlockCipher::BlockSize, src, BlockCipher::BlockSize);
}
};
template<>
void CbcMacImpl::Update<AesEncryptor128>(const void *data, size_t size);
}

274
libraries/libvapours/include/vapours/crypto/impl/crypto_ccm_mode_impl.hpp Normal file
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@ -0,0 +1,274 @@
/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#pragma once
#include <vapours/common.hpp>
#include <vapours/assert.hpp>
#include <vapours/util.hpp>
#include <vapours/crypto/crypto_memory_clear.hpp>
#include <vapours/crypto/impl/crypto_ctr_mode_impl.hpp>
#include <vapours/crypto/impl/crypto_cbc_mac_impl.hpp>
namespace ams::crypto::impl {
template<typename BlockCipher>
class CcmModeImpl {
NON_COPYABLE(CcmModeImpl);
NON_MOVEABLE(CcmModeImpl);
public:
static constexpr size_t KeySize = BlockCipher::KeySize;
static constexpr size_t BlockSize = BlockCipher::BlockSize;
private:
enum State {
State_None,
State_ProcessingAad,
State_ProcessingData,
State_DataInputDone,
State_Done,
};
private:
u8 m_mac[BlockSize];
s64 m_given_data_size;
s64 m_given_aad_size;
size_t m_given_mac_size;
s64 m_processed_data_size;
s64 m_processed_aad_size;
State m_state;
CtrModeImpl<BlockCipher> m_ctr_mode_impl;
CbcMacImpl m_cbc_mac_impl;
public:
CcmModeImpl() : m_state(State_None) { /* ... */ }
~CcmModeImpl() {
ClearMemory(this, sizeof(*this));
}
void Initialize(const BlockCipher *cipher, const void *nonce, size_t nonce_size, s64 aad_size, s64 data_size, size_t mac_size) {
/* Check pre-conditions. */
AMS_ASSERT(7 <= nonce_size && nonce_size <= 13);
AMS_ASSERT(4 <= mac_size && mac_size <= 16 && (mac_size % 2) == 0);
AMS_ASSERT(aad_size >= 0);
AMS_ASSERT(data_size >= 0);
if (nonce_size == 7) {
AMS_ASSERT(data_size <= std::numeric_limits<s64>::max());
} else {
AMS_ASSERT(data_size < (INT64_C(1) << ((15 - nonce_size) * 8)));
}
/* Set various size fields. */
m_given_aad_size = aad_size;
m_given_data_size = data_size;
m_given_mac_size = mac_size;
m_processed_aad_size = 0;
m_processed_data_size = 0;
/* Make the initial counter. */
u8 tmp[BlockSize];
MakeInitialCounter(tmp, nonce, nonce_size);
/* Encrypt the block. */
cipher->EncryptBlock(m_mac, BlockSize, tmp, BlockSize);
/* Initialize our ctr mode impl. */
m_ctr_mode_impl.Initialize(cipher, tmp, BlockSize);
m_ctr_mode_impl.IncrementCounter();
/* Make the header block. */
MakeHeaderBlock(tmp, nonce, nonce_size, aad_size, data_size, mac_size);
/* Initialize our cbc mac impl. */
m_cbc_mac_impl.Initialize(cipher);
m_cbc_mac_impl.template Update<BlockCipher>(tmp, BlockSize);
/* Process aad size block. */
if (aad_size > 0) {
this->ProcessEncodedAadSize();
m_state = State_ProcessingAad;
} else {
m_state = State_ProcessingData;
}
}
void UpdateAad(const void *aad, size_t aad_size) {
/* Check pre-conditions. */
AMS_ASSERT(m_state == State_ProcessingAad);
AMS_ASSERT(m_processed_aad_size + static_cast<s64>(aad_size) <= m_given_aad_size);
/* Update on the aad. */
m_cbc_mac_impl.template Update<BlockCipher>(aad, aad_size);
m_processed_aad_size += aad_size;
/* Check if we're done with aad. */
if (m_processed_aad_size == m_given_aad_size) {
/* Pad the aad to block size. */
this->ProcessPadding();
/* Update our state. */
if (m_given_data_size > 0) {
m_state = State_ProcessingData;
} else {
m_state = State_DataInputDone;
}
}
}
size_t UpdateEncryption(void *dst, size_t dst_size, const void *src, size_t src_size) {
/* Check pre-conditions. */
AMS_ASSERT(m_state == State_ProcessingData);
AMS_ASSERT(m_processed_data_size + static_cast<s64>(src_size) <= m_given_data_size);
AMS_ASSERT(dst_size >= src_size);
/* Update mac on decrypted data. */
m_cbc_mac_impl.template Update<BlockCipher>(src, src_size);
/* Encrypt. */
const size_t processed = m_ctr_mode_impl.Update(dst, dst_size, src, src_size);
m_processed_data_size += src_size;
/* Check if we're done with data. */
if (m_processed_data_size == m_given_data_size) {
/* Pad the data to block size. */
this->ProcessPadding();
m_state = State_DataInputDone;
}
return processed;
}
size_t UpdateDecryption(void *dst, size_t dst_size, const void *src, size_t src_size) {
/* Check pre-conditions. */
AMS_ASSERT(m_state == State_ProcessingData);
AMS_ASSERT(m_processed_data_size + static_cast<s64>(src_size) <= m_given_data_size);
AMS_ASSERT(dst_size >= src_size);
/* Decrypt. */
const size_t processed = m_ctr_mode_impl.Update(dst, dst_size, src, src_size);
m_processed_data_size += src_size;
/* Update mac on decrypted data. */
m_cbc_mac_impl.template Update<BlockCipher>(dst, dst_size);
/* Check if we're done with data. */
if (m_processed_data_size == m_given_data_size) {
/* Pad the data to block size. */
this->ProcessPadding();
m_state = State_DataInputDone;
}
return processed;
}
void GetMac(void *mac, size_t mac_size) {
/* Check pre-conditions. */
AMS_ASSERT(m_state == State_DataInputDone || m_state == State_Done);
AMS_ASSERT(mac_size >= m_given_mac_size);
AMS_UNUSED(mac_size);
/* Generate the mac, if we haven't already. */
if (m_state == State_DataInputDone) {
this->GenerateMac();
m_state = State_Done;
}
/* Copy out the mac. */
std::memcpy(mac, m_mac, m_given_mac_size);
}
private:
void MakeInitialCounter(void *dst, const void *nonce, size_t nonce_size) {
/* Clear the counter. */
u8 *ctr = static_cast<u8 *>(dst);
std::memset(ctr, 0, BlockSize);
/* Set the nonce. */
ctr[0] = (((BlockSize - 1 - nonce_size) & 0xFF) - 1) & 0x07;
std::memcpy(ctr + 1, nonce, nonce_size);
}
void MakeHeaderBlock(void *dst, const void *nonce, size_t nonce_size, s64 aad_size, s64 data_size, size_t mac_size) {
/* Clear the block. */
u8 *hdr = static_cast<u8 *>(dst);
std::memset(hdr, 0, BlockSize);
/* Encode the flags. */
hdr[0] = (((BlockSize - 1 - nonce_size) & 0xFF) - 1) & 0x07;
hdr[0] |= (((mac_size - 2) / 2) & 0x07) << 3;
hdr[0] |= (aad_size > 0) ? 0x40 : 0x00;
/* Encode the data size. */
for (size_t i = 0; i < sizeof(s64); ++i) {
hdr[BlockSize - 1 - i] = static_cast<u64>(data_size) >> (BITSIZEOF(u8) * i);
}
/* Copy the nonce. */
std::memcpy(hdr + 1, nonce, nonce_size);
}
void ProcessEncodedAadSize() {
u8 encoded_aad[10];
size_t encoded_aad_size;
if (m_given_aad_size < ((1 << 16) - (1 << 8))) {
encoded_aad[0] = (m_given_aad_size >> (BITSIZEOF(u8) * 1)) & 0xFF;
encoded_aad[1] = (m_given_aad_size >> (BITSIZEOF(u8) * 0)) & 0xFF;
encoded_aad_size = 2;
} else if (m_given_aad_size <= 0xFFFFFFFFu) {
encoded_aad[0] = 0xFF;
encoded_aad[1] = 0xFE;
encoded_aad[2] = (m_given_aad_size >> (BITSIZEOF(u8) * 3)) & 0xFF;
encoded_aad[3] = (m_given_aad_size >> (BITSIZEOF(u8) * 2)) & 0xFF;
encoded_aad[4] = (m_given_aad_size >> (BITSIZEOF(u8) * 1)) & 0xFF;
encoded_aad[5] = (m_given_aad_size >> (BITSIZEOF(u8) * 0)) & 0xFF;
encoded_aad_size = 6;
} else {
encoded_aad[0] = 0xFF;
encoded_aad[1] = 0xFE;
encoded_aad[2] = (static_cast<u64>(m_given_aad_size) >> (BITSIZEOF(u8) * 7)) & 0xFF;
encoded_aad[3] = (static_cast<u64>(m_given_aad_size) >> (BITSIZEOF(u8) * 6)) & 0xFF;
encoded_aad[4] = (static_cast<u64>(m_given_aad_size) >> (BITSIZEOF(u8) * 5)) & 0xFF;
encoded_aad[5] = (static_cast<u64>(m_given_aad_size) >> (BITSIZEOF(u8) * 4)) & 0xFF;
encoded_aad[6] = (static_cast<u64>(m_given_aad_size) >> (BITSIZEOF(u8) * 3)) & 0xFF;
encoded_aad[7] = (static_cast<u64>(m_given_aad_size) >> (BITSIZEOF(u8) * 2)) & 0xFF;
encoded_aad[8] = (static_cast<u64>(m_given_aad_size) >> (BITSIZEOF(u8) * 1)) & 0xFF;
encoded_aad[9] = (static_cast<u64>(m_given_aad_size) >> (BITSIZEOF(u8) * 0)) & 0xFF;
encoded_aad_size = 10;
}
m_cbc_mac_impl.template Update<BlockCipher>(encoded_aad, encoded_aad_size);
}
void ProcessPadding() {
/* Process any remaining padding. */
if (const auto buffered = m_cbc_mac_impl.GetBufferedDataSize(); buffered > 0) {
u8 zeros[BlockSize] = {};
m_cbc_mac_impl.template Update<BlockCipher>(zeros, BlockSize - buffered);
}
}
void GenerateMac() {
/* Get the cbc mac. */
u8 tmp[BlockSize];
m_cbc_mac_impl.GetMac(tmp, BlockSize);
/* Xor into our mac. */
for (size_t i = 0; i < BlockSize; ++i) {
m_mac[i] ^= tmp[i];
}
}
};
}

5
libraries/libvapours/include/vapours/results/fs_results.hpp
View file

@ -51,6 +51,11 @@ namespace ams::fs {
R_DEFINE_ERROR_RESULT(GameCardPreconditionViolation, 2503);
R_DEFINE_ERROR_RANGE(GameCardCardAccessFailure, 2530, 2559);
R_DEFINE_ERROR_RANGE(CameCardWrongCard, 2543, 2546);
R_DEFINE_ERROR_RESULT(GameCardInitialDataMismatch, 2544);
R_DEFINE_ERROR_RESULT(GameCardInitialNotFilledWithZero, 2545);
R_DEFINE_ERROR_RESULT(GameCardKekIndexMismatch, 2546);
R_DEFINE_ERROR_RESULT(GameCardInvalidCardHeader, 2554);
R_DEFINE_ERROR_RESULT(GameCardInvalidT1CardCertificate, 2555);
R_DEFINE_ERROR_RESULT(GameCardInvalidCa10Certificate, 2557);

61
libraries/libvapours/source/crypto/impl/crypto_cbc_mac_impl.arch.generic.cpp Normal file
View file

@ -0,0 +1,61 @@
/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <vapours.hpp>
#include "crypto_update_impl.hpp"
namespace ams::crypto::impl {
void CbcMacImpl::UpdateGeneric(const void *data, size_t size) {
/* Check pre-conditions. */
AMS_ASSERT(m_state == State_Initialized);
/* Update. */
UpdateImpl<void>(this, data, size);
}
void CbcMacImpl::ProcessBlocksGeneric(const void *data, size_t num_blocks) {
/* If we have a block remaining, process it. */
if (m_buffered_bytes == BlockSize) {
this->ProcessBlock(m_buffer);
m_buffered_bytes = 0;
}
/* Process blocks. */
const u8 *data8 = static_cast<const u8 *>(data);
u8 block[BlockSize];
while ((--num_blocks) > 0) {
for (size_t i = 0; i < BlockSize; ++i) {
block[i] = data8[i] ^ m_mac[i];
}
m_cipher_function(m_mac, block, m_cipher_context);
data8 += BlockSize;
}
/* Process the last block. */
std::memcpy(m_buffer, data8, BlockSize);
m_buffered_bytes = BlockSize;
}
template<>
void CbcMacImpl::Update<AesEncryptor128>(const void *data, size_t size) {
this->UpdateGeneric(data, size);
}
}

80
libraries/libvapours/source/crypto/impl/crypto_cbc_mac_impl.cpp Normal file
View file

@ -0,0 +1,80 @@
/*
* Copyright (c) Atmosphère-NX
*
* This program is free software; you can redistribute it and/or modify it
* under the terms and conditions of the GNU General Public License,
* version 2, as published by the Free Software Foundation.
*
* This program is distributed in the hope it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
* more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#include <vapours.hpp>
namespace ams::crypto::impl {
void CbcMacImpl::ProcessBlock(const void *data) {
/* Procses the block. */
const u8 *data8 = static_cast<const u8 *>(data);
u8 block[BlockSize];
for (size_t i = 0; i < BlockSize; ++i) {
block[i] = data8[i] ^ m_mac[i];
}
m_cipher_function(m_mac, block, m_cipher_context);
}
void CbcMacImpl::ProcessPartialData(const void *data, size_t size) {
/* Copy in the data. */
std::memcpy(m_buffer + m_buffered_bytes, data, size);
m_buffered_bytes += size;
}
void CbcMacImpl::ProcessRemainingData(const void *data, size_t size) {
/* If we have a block remaining, process it. */
if (m_buffered_bytes == BlockSize) {
this->ProcessBlock(m_buffer);
m_buffered_bytes = 0;
}
/* Copy the remaining data. */
std::memcpy(m_buffer, data, size);
m_buffered_bytes = size;
}
void CbcMacImpl::GetMac(void *mac, size_t mac_size) {
/* Check pre-conditions. */
AMS_ASSERT(m_state == State_Initialized || m_state == State_Done);
AMS_ASSERT(mac_size >= BlockSize);
/* Ensure we're done. */
if (m_state == State_Initialized) {
if (m_buffered_bytes == BlockSize) {
this->ProcessBlock(m_buffer);
m_buffered_bytes = 0;
}
m_state = State_Done;
}
/* Copy out the mac. */
std::memcpy(mac, m_mac, sizeof(m_mac));
}
void CbcMacImpl::MaskBufferedData(const void *data, size_t size) {
/* Check pre-conditions. */
AMS_ASSERT(m_buffered_bytes == BlockSize);
AMS_ASSERT(size == BlockSize);
AMS_UNUSED(size);
/* Mask the data. */
for (size_t i = 0; i < BlockSize; ++i) {
m_buffer[i] ^= static_cast<const u8 *>(data)[i];
}
}
}