/*
* 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 .
*/
#include
#include "fssystem_key_slot_cache.hpp"
namespace ams::fssystem {
namespace {
constexpr inline const size_t KeySize = crypto::AesDecryptor128::KeySize;
constexpr inline const size_t NxAcidSignatureKeyGenerationMax = 1;
constexpr inline const size_t NxAcidSignatureKeyModulusSize = NcaCryptoConfiguration::Rsa2048KeyModulusSize;
constexpr inline const u8 NxAcidSignatureKeyModulusDev[NxAcidSignatureKeyGenerationMax + 1][NxAcidSignatureKeyModulusSize] = {
{
0xD6, 0x34, 0xA5, 0x78, 0x6C, 0x68, 0xCE, 0x5A, 0xC2, 0x37, 0x17, 0xF3, 0x82, 0x45, 0xC6, 0x89,
0xE1, 0x2D, 0x06, 0x67, 0xBF, 0xB4, 0x06, 0x19, 0x55, 0x6B, 0x27, 0x66, 0x0C, 0xA4, 0xB5, 0x87,
0x81, 0x25, 0xF4, 0x30, 0xBC, 0x53, 0x08, 0x68, 0xA2, 0x48, 0x49, 0x8C, 0x3F, 0x38, 0x40, 0x9C,
0xC4, 0x26, 0xF4, 0x79, 0xE2, 0xA1, 0x85, 0xF5, 0x5C, 0x7F, 0x58, 0xBA, 0xA6, 0x1C, 0xA0, 0x8B,
0x84, 0x16, 0x14, 0x6F, 0x85, 0xD9, 0x7C, 0xE1, 0x3C, 0x67, 0x22, 0x1E, 0xFB, 0xD8, 0xA7, 0xA5,
0x9A, 0xBF, 0xEC, 0x0E, 0xCF, 0x96, 0x7E, 0x85, 0xC2, 0x1D, 0x49, 0x5D, 0x54, 0x26, 0xCB, 0x32,
0x7C, 0xF6, 0xBB, 0x58, 0x03, 0x80, 0x2B, 0x5D, 0xF7, 0xFB, 0xD1, 0x9D, 0xC7, 0xC6, 0x2E, 0x53,
0xC0, 0x6F, 0x39, 0x2C, 0x1F, 0xA9, 0x92, 0xF2, 0x4D, 0x7D, 0x4E, 0x74, 0xFF, 0xE4, 0xEF, 0xE4,
0x7C, 0x3D, 0x34, 0x2A, 0x71, 0xA4, 0x97, 0x59, 0xFF, 0x4F, 0xA2, 0xF4, 0x66, 0x78, 0xD8, 0xBA,
0x99, 0xE3, 0xE6, 0xDB, 0x54, 0xB9, 0xE9, 0x54, 0xA1, 0x70, 0xFC, 0x05, 0x1F, 0x11, 0x67, 0x4B,
0x26, 0x8C, 0x0C, 0x3E, 0x03, 0xD2, 0xA3, 0x55, 0x5C, 0x7D, 0xC0, 0x5D, 0x9D, 0xFF, 0x13, 0x2F,
0xFD, 0x19, 0xBF, 0xED, 0x44, 0xC3, 0x8C, 0xA7, 0x28, 0xCB, 0xE5, 0xE0, 0xB1, 0xA7, 0x9C, 0x33,
0x8D, 0xB8, 0x6E, 0xDE, 0x87, 0x18, 0x22, 0x60, 0xC4, 0xAE, 0xF2, 0x87, 0x9F, 0xCE, 0x09, 0x5C,
0xB5, 0x99, 0xA5, 0x9F, 0x49, 0xF2, 0xD7, 0x58, 0xFA, 0xF9, 0xC0, 0x25, 0x7D, 0xD6, 0xCB, 0xF3,
0xD8, 0x6C, 0xA2, 0x69, 0x91, 0x68, 0x73, 0xB1, 0x94, 0x6F, 0xA3, 0xF3, 0xB9, 0x7D, 0xF8, 0xE0,
0x72, 0x9E, 0x93, 0x7B, 0x7A, 0xA2, 0x57, 0x60, 0xB7, 0x5B, 0xA9, 0x84, 0xAE, 0x64, 0x88, 0x69
},
{
0xBC, 0xA5, 0x6A, 0x7E, 0xEA, 0x38, 0x34, 0x62, 0xA6, 0x10, 0x18, 0x3C, 0xE1, 0x63, 0x7B, 0xF0,
0xD3, 0x08, 0x8C, 0xF5, 0xC5, 0xC4, 0xC7, 0x93, 0xE9, 0xD9, 0xE6, 0x32, 0xF3, 0xA0, 0xF6, 0x6E,
0x8A, 0x98, 0x76, 0x47, 0x33, 0x47, 0x65, 0x02, 0x70, 0xDC, 0x86, 0x5F, 0x3D, 0x61, 0x5A, 0x70,
0xBC, 0x5A, 0xCA, 0xCA, 0x50, 0xAD, 0x61, 0x7E, 0xC9, 0xEC, 0x27, 0xFF, 0xE8, 0x64, 0x42, 0x9A,
0xEE, 0xBE, 0xC3, 0xD1, 0x0B, 0xC0, 0xE9, 0xBF, 0x83, 0x8D, 0xC0, 0x0C, 0xD8, 0x00, 0x5B, 0x76,
0x90, 0xD2, 0x4B, 0x30, 0x84, 0x35, 0x8B, 0x1E, 0x20, 0xB7, 0xE4, 0xDC, 0x63, 0xE5, 0xDF, 0xCD,
0x00, 0x5F, 0x81, 0x5F, 0x67, 0xC5, 0x8B, 0xDF, 0xFC, 0xE1, 0x37, 0x5F, 0x07, 0xD9, 0xDE, 0x4F,
0xE6, 0x7B, 0xF1, 0xFB, 0xA1, 0x5A, 0x71, 0x40, 0xFE, 0xBA, 0x1E, 0xAE, 0x13, 0x22, 0xD2, 0xFE,
0x37, 0xA2, 0xB6, 0x8B, 0xAB, 0xEB, 0x84, 0x81, 0x4E, 0x7C, 0x1E, 0x02, 0xD1, 0xFB, 0xD7, 0x5D,
0x11, 0x84, 0x64, 0xD2, 0x4D, 0xBB, 0x50, 0x00, 0x67, 0x54, 0xE2, 0x77, 0x89, 0xBA, 0x0B, 0xE7,
0x05, 0x57, 0x9A, 0x22, 0x5A, 0xEC, 0x76, 0x1C, 0xFD, 0xE8, 0xA8, 0x18, 0x16, 0x41, 0x65, 0x03,
0xFA, 0xC4, 0xA6, 0x31, 0x5C, 0x1A, 0x7F, 0xAB, 0x11, 0xC8, 0x4A, 0x99, 0xB9, 0xE6, 0xCF, 0x62,
0x21, 0xA6, 0x72, 0x47, 0xDB, 0xBA, 0x96, 0x26, 0x4E, 0x2E, 0xD4, 0x8C, 0x46, 0xD6, 0xA7, 0x1A,
0x6C, 0x32, 0xA7, 0xDF, 0x85, 0x1C, 0x03, 0xC3, 0x6D, 0xA9, 0xE9, 0x68, 0xF4, 0x17, 0x1E, 0xB2,
0x70, 0x2A, 0xA1, 0xE5, 0xE1, 0xF3, 0x8F, 0x6F, 0x63, 0xAC, 0xEB, 0x72, 0x0B, 0x4C, 0x4A, 0x36,
0x3C, 0x60, 0x91, 0x9F, 0x6E, 0x1C, 0x71, 0xEA, 0xD0, 0x78, 0x78, 0xA0, 0x2E, 0xC6, 0x32, 0x6B
}
};
constexpr inline const u8 NxAcidSignatureKeyModulusProd[NxAcidSignatureKeyGenerationMax + 1][NxAcidSignatureKeyModulusSize] = {
{
0xDD, 0xC8, 0xDD, 0xF2, 0x4E, 0x6D, 0xF0, 0xCA, 0x9E, 0xC7, 0x5D, 0xC7, 0x7B, 0xAD, 0xFE, 0x7D,
0x23, 0x89, 0x69, 0xB6, 0xF2, 0x06, 0xA2, 0x02, 0x88, 0xE1, 0x55, 0x91, 0xAB, 0xCB, 0x4D, 0x50,
0x2E, 0xFC, 0x9D, 0x94, 0x76, 0xD6, 0x4C, 0xD8, 0xFF, 0x10, 0xFA, 0x5E, 0x93, 0x0A, 0xB4, 0x57,
0xAC, 0x51, 0xC7, 0x16, 0x66, 0xF4, 0x1A, 0x54, 0xC2, 0xC5, 0x04, 0x3D, 0x1B, 0xFE, 0x30, 0x20,
0x8A, 0xAC, 0x6F, 0x6F, 0xF5, 0xC7, 0xB6, 0x68, 0xB8, 0xC9, 0x40, 0x6B, 0x42, 0xAD, 0x11, 0x21,
0xE7, 0x8B, 0xE9, 0x75, 0x01, 0x86, 0xE4, 0x48, 0x9B, 0x0A, 0x0A, 0xF8, 0x7F, 0xE8, 0x87, 0xF2,
0x82, 0x01, 0xE6, 0xA3, 0x0F, 0xE4, 0x66, 0xAE, 0x83, 0x3F, 0x4E, 0x9F, 0x5E, 0x01, 0x30, 0xA4,
0x00, 0xB9, 0x9A, 0xAE, 0x5F, 0x03, 0xCC, 0x18, 0x60, 0xE5, 0xEF, 0x3B, 0x5E, 0x15, 0x16, 0xFE,
0x1C, 0x82, 0x78, 0xB5, 0x2F, 0x47, 0x7C, 0x06, 0x66, 0x88, 0x5D, 0x35, 0xA2, 0x67, 0x20, 0x10,
0xE7, 0x6C, 0x43, 0x68, 0xD3, 0xE4, 0x5A, 0x68, 0x2A, 0x5A, 0xE2, 0x6D, 0x73, 0xB0, 0x31, 0x53,
0x1C, 0x20, 0x09, 0x44, 0xF5, 0x1A, 0x9D, 0x22, 0xBE, 0x12, 0xA1, 0x77, 0x11, 0xE2, 0xA1, 0xCD,
0x40, 0x9A, 0xA2, 0x8B, 0x60, 0x9B, 0xEF, 0xA0, 0xD3, 0x48, 0x63, 0xA2, 0xF8, 0xA3, 0x2C, 0x08,
0x56, 0x52, 0x2E, 0x60, 0x19, 0x67, 0x5A, 0xA7, 0x9F, 0xDC, 0x3F, 0x3F, 0x69, 0x2B, 0x31, 0x6A,
0xB7, 0x88, 0x4A, 0x14, 0x84, 0x80, 0x33, 0x3C, 0x9D, 0x44, 0xB7, 0x3F, 0x4C, 0xE1, 0x75, 0xEA,
0x37, 0xEA, 0xE8, 0x1E, 0x7C, 0x77, 0xB7, 0xC6, 0x1A, 0xA2, 0xF0, 0x9F, 0x10, 0x61, 0xCD, 0x7B,
0x5B, 0x32, 0x4C, 0x37, 0xEF, 0xB1, 0x71, 0x68, 0x53, 0x0A, 0xED, 0x51, 0x7D, 0x35, 0x22, 0xFD
},
{
0xE7, 0xAA, 0x25, 0xC8, 0x01, 0xA5, 0x14, 0x6B, 0x01, 0x60, 0x3E, 0xD9, 0x96, 0x5A, 0xBF, 0x90,
0xAC, 0xA7, 0xFD, 0x9B, 0x5B, 0xBD, 0x8A, 0x26, 0xB0, 0xCB, 0x20, 0x28, 0x9A, 0x72, 0x12, 0xF5,
0x20, 0x65, 0xB3, 0xB9, 0x84, 0x58, 0x1F, 0x27, 0xBC, 0x7C, 0xA2, 0xC9, 0x9E, 0x18, 0x95, 0xCF,
0xC2, 0x73, 0x2E, 0x74, 0x8C, 0x66, 0xE5, 0x9E, 0x79, 0x2B, 0xB8, 0x07, 0x0C, 0xB0, 0x4E, 0x8E,
0xAB, 0x85, 0x21, 0x42, 0xC4, 0xC5, 0x6D, 0x88, 0x9C, 0xDB, 0x15, 0x95, 0x3F, 0x80, 0xDB, 0x7A,
0x9A, 0x7D, 0x41, 0x56, 0x25, 0x17, 0x18, 0x42, 0x4D, 0x8C, 0xAC, 0xA5, 0x7B, 0xDB, 0x42, 0x5D,
0x59, 0x35, 0x45, 0x5D, 0x8A, 0x02, 0xB5, 0x70, 0xC0, 0x72, 0x35, 0x46, 0xD0, 0x1D, 0x60, 0x01,
0x4A, 0xCC, 0x1C, 0x46, 0xD3, 0xD6, 0x35, 0x52, 0xD6, 0xE1, 0xF8, 0x3B, 0x5D, 0xEA, 0xDD, 0xB8,
0xFE, 0x7D, 0x50, 0xCB, 0x35, 0x23, 0x67, 0x8B, 0xB6, 0xE4, 0x74, 0xD2, 0x60, 0xFC, 0xFD, 0x43,
0xBF, 0x91, 0x08, 0x81, 0xC5, 0x4F, 0x5D, 0x16, 0x9A, 0xC4, 0x9A, 0xC6, 0xF6, 0xF3, 0xE1, 0xF6,
0x5C, 0x07, 0xAA, 0x71, 0x6C, 0x13, 0xA4, 0xB1, 0xB3, 0x66, 0xBF, 0x90, 0x4C, 0x3D, 0xA2, 0xC4,
0x0B, 0xB8, 0x3D, 0x7A, 0x8C, 0x19, 0xFA, 0xFF, 0x6B, 0xB9, 0x1F, 0x02, 0xCC, 0xB6, 0xD3, 0x0C,
0x7D, 0x19, 0x1F, 0x47, 0xF9, 0xC7, 0x40, 0x01, 0xFA, 0x46, 0xEA, 0x0B, 0xD4, 0x02, 0xE0, 0x3D,
0x30, 0x9A, 0x1A, 0x0F, 0xEA, 0xA7, 0x66, 0x55, 0xF7, 0xCB, 0x28, 0xE2, 0xBB, 0x99, 0xE4, 0x83,
0xC3, 0x43, 0x03, 0xEE, 0xDC, 0x1F, 0x02, 0x23, 0xDD, 0xD1, 0x2D, 0x39, 0xA4, 0x65, 0x75, 0x03,
0xEF, 0x37, 0x9C, 0x06, 0xD6, 0xFA, 0xA1, 0x15, 0xF0, 0xDB, 0x17, 0x47, 0x26, 0x4F, 0x49, 0x03
}
};
static_assert(sizeof(NxAcidSignatureKeyModulusProd) == sizeof(NxAcidSignatureKeyModulusDev));
constexpr inline const u8 AcidSignatureKeyPublicExponent[] = {
0x01, 0x00, 0x01
};
NcaCryptoConfiguration g_nca_crypto_configuration_dev;
NcaCryptoConfiguration g_nca_crypto_configuration_prod;
constexpr inline s32 KeySlotCacheEntryCount = 3;
constinit KeySlotCache g_key_slot_cache;
constinit util::optional g_key_slot_cache_entry[KeySlotCacheEntryCount];
spl::AccessKey &GetNcaKekAccessKey(s32 key_type) {
AMS_FUNCTION_LOCAL_STATIC_CONSTINIT(spl::AccessKey, s_nca_kek_access_key_array[KeyAreaEncryptionKeyCount]);
AMS_FUNCTION_LOCAL_STATIC_CONSTINIT(spl::AccessKey, s_nca_header_kek_access_key);
AMS_FUNCTION_LOCAL_STATIC_CONSTINIT(spl::AccessKey, s_invalid_nca_kek_access_key);
if (key_type > static_cast(KeyType::NcaHeaderKey2) || IsInvalidKeyTypeValue(key_type)) {
return s_invalid_nca_kek_access_key;
} else if (key_type == static_cast(KeyType::NcaHeaderKey1) || key_type == static_cast(KeyType::NcaHeaderKey2)) {
return s_nca_header_kek_access_key;
} else {
return s_nca_kek_access_key_array[key_type];
}
}
void GenerateNcaKey(void *dst, size_t dst_size, const void *src, size_t src_size, s32 key_type) {
R_ABORT_UNLESS(spl::GenerateAesKey(dst, dst_size, GetNcaKekAccessKey(key_type), src, src_size));
}
void ComputeCtr(void *dst, size_t dst_size, int key_slot_idx, const void *src, size_t src_size, const void *iv, size_t iv_size) {
if (dst == src) {
/* If the destination and source are the same, we'll use an intermediate buffer. */
constexpr size_t MinimumSizeToRequireLocking = 256_KB;
constexpr size_t MinimumWorkBufferSize = 16_KB;
/* If the request is large enough, acquire a lock to prevent too many large requests in flight simultaneously. */
static constinit os::SdkMutex s_large_work_buffer_mutex;
util::optional> lk = util::nullopt;
if (dst_size >= MinimumSizeToRequireLocking) {
lk.emplace(s_large_work_buffer_mutex);
}
/* Allocate a pooled buffer. */
PooledBuffer pooled_buffer;
pooled_buffer.AllocateParticularlyLarge(dst_size, MinimumWorkBufferSize);
/* Copy the iv locally. */
AMS_ASSERT(iv_size == crypto::Aes128CtrEncryptor::IvSize);
u8 work_iv[crypto::Aes128CtrEncryptor::IvSize];
std::memcpy(work_iv, iv, sizeof(work_iv));
/* Process all data. */
size_t processed = 0;
while (processed < dst_size) {
/* Determine the currently processable size. */
const size_t cur_size = std::min(dst_size - processed, pooled_buffer.GetSize());
/* Process. */
R_ABORT_UNLESS(spl::ComputeCtr(pooled_buffer.GetBuffer(), cur_size, key_slot_idx, static_cast(src) + processed, cur_size, work_iv, sizeof(work_iv)));
/* Copy to dst. */
std::memcpy(static_cast(dst) + processed, pooled_buffer.GetBuffer(), cur_size);
/* Advance. */
processed += cur_size;
/* Increment the counter. */
fssystem::AddCounter(work_iv, sizeof(work_iv), cur_size / crypto::Aes128CtrEncryptor::BlockSize);
}
} else {
/* If the destination and source are different, we can just call ComputeCtr directly. */
R_ABORT_UNLESS(spl::ComputeCtr(dst, dst_size, key_slot_idx, src, src_size, iv, iv_size));
}
}
void DecryptAesCtr(void *dst, size_t dst_size, u8 key_index, u8 key_generation, const void *enc_key, size_t enc_key_size, const void *iv, size_t iv_size, const void *src, size_t src_size) {
std::unique_ptr accessor;
const s32 key_type = GetKeyTypeValue(key_index, key_generation);
R_TRY_CATCH(g_key_slot_cache.Find(std::addressof(accessor), enc_key, enc_key_size, key_type)) {
R_CATCH(fs::ResultTargetNotFound) {
R_ABORT_UNLESS(g_key_slot_cache.AllocateHighPriority(std::addressof(accessor), enc_key, enc_key_size, key_type));
R_ABORT_UNLESS(spl::LoadAesKey(accessor->GetKeySlotIndex(), GetNcaKekAccessKey(key_type), enc_key, enc_key_size));
}
} R_END_TRY_CATCH_WITH_ABORT_UNLESS;
ComputeCtr(dst, dst_size, accessor->GetKeySlotIndex(), src, src_size, iv, iv_size);
}
void DecryptAesCtrForPreparedKey(void *dst, size_t dst_size, u8 key_index, u8 key_generation, const void *enc_key, size_t enc_key_size, const void *iv, size_t iv_size, const void *src, size_t src_size) {
std::unique_ptr accessor;
AMS_UNUSED(key_index, key_generation);
const s32 key_type = static_cast(KeyType::NcaExternalKey);
R_TRY_CATCH(g_key_slot_cache.Find(std::addressof(accessor), enc_key, enc_key_size, key_type)) {
R_CATCH(fs::ResultTargetNotFound) {
R_ABORT_UNLESS(g_key_slot_cache.AllocateHighPriority(std::addressof(accessor), enc_key, enc_key_size, key_type));
spl::AccessKey access_key;
AMS_ABORT_UNLESS(enc_key_size == sizeof(access_key));
std::memcpy(std::addressof(access_key), enc_key, sizeof(access_key));
R_ABORT_UNLESS(spl::LoadPreparedAesKey(accessor->GetKeySlotIndex(), access_key));
}
} R_END_TRY_CATCH_WITH_ABORT_UNLESS;
ComputeCtr(dst, dst_size, accessor->GetKeySlotIndex(), src, src_size, iv, iv_size);
}
bool VerifySign1Prod(const void *sig, size_t sig_size, const void *data, size_t data_size, u8 generation) {
const u8 *mod = g_nca_crypto_configuration_prod.header_1_sign_key_moduli[generation];
const size_t mod_size = NcaCryptoConfiguration::Rsa2048KeyModulusSize;
const u8 *exp = g_nca_crypto_configuration_prod.header_1_sign_key_public_exponent;
const size_t exp_size = NcaCryptoConfiguration::Rsa2048KeyPublicExponentSize;
return crypto::VerifyRsa2048PssSha256(sig, sig_size, mod, mod_size, exp, exp_size, data, data_size);
}
bool VerifySign1Dev(const void *sig, size_t sig_size, const void *data, size_t data_size, u8 generation) {
const u8 *mod = g_nca_crypto_configuration_dev.header_1_sign_key_moduli[generation];
const size_t mod_size = NcaCryptoConfiguration::Rsa2048KeyModulusSize;
const u8 *exp = g_nca_crypto_configuration_dev.header_1_sign_key_public_exponent;
const size_t exp_size = NcaCryptoConfiguration::Rsa2048KeyPublicExponentSize;
return crypto::VerifyRsa2048PssSha256(sig, sig_size, mod, mod_size, exp, exp_size, data, data_size);
}
}
const ::ams::fssystem::NcaCryptoConfiguration *GetNcaCryptoConfiguration(bool prod) {
/* Decide which configuration to use. */
NcaCryptoConfiguration * const cfg = prod ? std::addressof(g_nca_crypto_configuration_prod) : std::addressof(g_nca_crypto_configuration_dev);
std::memcpy(cfg, fssrv::GetDefaultNcaCryptoConfiguration(prod), sizeof(NcaCryptoConfiguration));
/* Set the key generation functions. */
cfg->generate_key = GenerateNcaKey;
cfg->decrypt_aes_xts_external = nullptr;
cfg->encrypt_aes_xts_external = nullptr;
cfg->decrypt_aes_ctr = DecryptAesCtr;
cfg->decrypt_aes_ctr_external = DecryptAesCtrForPreparedKey;
cfg->verify_sign1 = prod ? VerifySign1Prod : VerifySign1Dev;
cfg->is_plaintext_header_available = !prod;
cfg->is_available_sw_key = true;
/* TODO: Should this default to false for host tools with api to set explicitly? */
#if !defined(ATMOSPHERE_BOARD_NINTENDO_NX)
cfg->is_unsigned_header_available_for_host_tool = true;
#endif
return cfg;
}
void SetUpKekAccessKeys(bool prod) {
/* Get the crypto configuration. */
const NcaCryptoConfiguration *nca_crypto_cfg = GetNcaCryptoConfiguration(prod);
/* Setup the nca keys. */
{
constexpr s32 Option = 0;
/* Setup the key area encryption keys. */
for (u8 i = 0; i < NcaCryptoConfiguration::KeyGenerationMax; ++i) {
spl::GenerateAesKek(std::addressof(GetNcaKekAccessKey(GetKeyTypeValue(0, i))), nca_crypto_cfg->key_area_encryption_key_source[0], KeySize, i, Option);
spl::GenerateAesKek(std::addressof(GetNcaKekAccessKey(GetKeyTypeValue(1, i))), nca_crypto_cfg->key_area_encryption_key_source[1], KeySize, i, Option);
spl::GenerateAesKek(std::addressof(GetNcaKekAccessKey(GetKeyTypeValue(2, i))), nca_crypto_cfg->key_area_encryption_key_source[2], KeySize, i, Option);
}
/* Setup the header encryption key. */
R_ABORT_UNLESS(spl::GenerateAesKek(std::addressof(GetNcaKekAccessKey(static_cast(KeyType::NcaHeaderKey1))), nca_crypto_cfg->header_encryption_key_source, KeySize, 0, Option));
}
/* TODO FS-REIMPL: Save stuff. */
/* Setup the keyslot cache. */
for (s32 i = 0; i < KeySlotCacheEntryCount; i++) {
s32 slot_index = -1;
R_ABORT_UNLESS(spl::AllocateAesKeySlot(std::addressof(slot_index)));
g_key_slot_cache_entry[i].emplace(slot_index);
g_key_slot_cache.AddEntry(std::addressof(g_key_slot_cache_entry[i].value()));
}
}
void InvalidateHardwareAesKey() {
constexpr u8 InvalidKey[KeySize] = {};
for (s32 i = 0; i < KeySlotCacheEntryCount; ++i) {
std::unique_ptr accessor;
R_ABORT_UNLESS(g_key_slot_cache.AllocateHighPriority(std::addressof(accessor), InvalidKey, KeySize, -1 - i));
}
}
bool IsValidSignatureKeyGeneration(ncm::ContentMetaPlatform platform, size_t key_generation) {
switch (platform) {
case ncm::ContentMetaPlatform::Nx:
return key_generation <= NxAcidSignatureKeyGenerationMax;
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
const u8 *GetAcidSignatureKeyModulus(ncm::ContentMetaPlatform platform, bool prod, size_t key_generation, bool unk_unused) {
AMS_ASSERT(IsValidSignatureKeyGeneration(platform, key_generation));
AMS_UNUSED(unk_unused);
switch (platform) {
case ncm::ContentMetaPlatform::Nx:
{
const size_t used_keygen = (key_generation % (NxAcidSignatureKeyGenerationMax + 1));
return prod ? NxAcidSignatureKeyModulusProd[used_keygen] : NxAcidSignatureKeyModulusDev[used_keygen];
}
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
size_t GetAcidSignatureKeyModulusSize(ncm::ContentMetaPlatform platform, bool unk_unused) {
AMS_UNUSED(unk_unused);
switch (platform) {
case ncm::ContentMetaPlatform::Nx:
return NxAcidSignatureKeyModulusSize;
AMS_UNREACHABLE_DEFAULT_CASE();
}
}
const u8 *GetAcidSignatureKeyPublicExponent() {
return AcidSignatureKeyPublicExponent;
}
}