diff options
Diffstat (limited to 'src/core/hle/service/nfp/amiibo_crypto.h')
-rw-r--r-- | src/core/hle/service/nfp/amiibo_crypto.h | 106 |
1 files changed, 0 insertions, 106 deletions
diff --git a/src/core/hle/service/nfp/amiibo_crypto.h b/src/core/hle/service/nfp/amiibo_crypto.h deleted file mode 100644 index f6208ee6b..000000000 --- a/src/core/hle/service/nfp/amiibo_crypto.h +++ /dev/null @@ -1,106 +0,0 @@ -// SPDX-FileCopyrightText: Copyright 2022 yuzu Emulator Project -// SPDX-License-Identifier: GPL-3.0-or-later - -#pragma once - -#include <array> - -#include "core/hle/service/nfp/nfp_types.h" - -struct mbedtls_md_context_t; - -namespace Service::NFP::AmiiboCrypto { -// Byte locations in Service::NFP::NTAG215File -constexpr std::size_t HMAC_DATA_START = 0x8; -constexpr std::size_t SETTINGS_START = 0x2c; -constexpr std::size_t WRITE_COUNTER_START = 0x29; -constexpr std::size_t HMAC_TAG_START = 0x1B4; -constexpr std::size_t UUID_START = 0x1D4; -constexpr std::size_t DYNAMIC_LOCK_START = 0x208; - -using HmacKey = std::array<u8, 0x10>; -using DrgbOutput = std::array<u8, 0x20>; - -struct HashSeed { - u16_be magic; - std::array<u8, 0xE> padding; - UniqueSerialNumber uid_1; - u8 nintendo_id_1; - UniqueSerialNumber uid_2; - u8 nintendo_id_2; - std::array<u8, 0x20> keygen_salt; -}; -static_assert(sizeof(HashSeed) == 0x40, "HashSeed is an invalid size"); - -struct InternalKey { - HmacKey hmac_key; - std::array<char, 0xE> type_string; - u8 reserved; - u8 magic_length; - std::array<u8, 0x10> magic_bytes; - std::array<u8, 0x20> xor_pad; -}; -static_assert(sizeof(InternalKey) == 0x50, "InternalKey is an invalid size"); -static_assert(std::is_trivially_copyable_v<InternalKey>, "InternalKey must be trivially copyable."); - -struct CryptoCtx { - std::array<char, 480> buffer; - bool used; - std::size_t buffer_size; - s16 counter; -}; - -struct DerivedKeys { - std::array<u8, 0x10> aes_key; - std::array<u8, 0x10> aes_iv; - std::array<u8, 0x10> hmac_key; -}; -static_assert(sizeof(DerivedKeys) == 0x30, "DerivedKeys is an invalid size"); - -/// Validates that the amiibo file is not corrupted -bool IsAmiiboValid(const EncryptedNTAG215File& ntag_file); - -/// Validates that the amiibo file is not corrupted -bool IsAmiiboValid(const NTAG215File& ntag_file); - -/// Converts from encrypted file format to encoded file format -NTAG215File NfcDataToEncodedData(const EncryptedNTAG215File& nfc_data); - -/// Converts from encoded file format to encrypted file format -EncryptedNTAG215File EncodedDataToNfcData(const NTAG215File& encoded_data); - -/// Returns password needed to allow write access to protected memory -u32 GetTagPassword(const TagUuid& uuid); - -// Generates Seed needed for key derivation -HashSeed GetSeed(const NTAG215File& data); - -// Middle step on the generation of derived keys -std::vector<u8> GenerateInternalKey(const InternalKey& key, const HashSeed& seed); - -// Initializes mbedtls context -void CryptoInit(CryptoCtx& ctx, mbedtls_md_context_t& hmac_ctx, const HmacKey& hmac_key, - const std::vector<u8>& seed); - -// Feeds data to mbedtls context to generate the derived key -void CryptoStep(CryptoCtx& ctx, mbedtls_md_context_t& hmac_ctx, DrgbOutput& output); - -// Generates the derived key from amiibo data -DerivedKeys GenerateKey(const InternalKey& key, const NTAG215File& data); - -// Encodes or decodes amiibo data -void Cipher(const DerivedKeys& keys, const NTAG215File& in_data, NTAG215File& out_data); - -/// Loads both amiibo keys from key_retail.bin -bool LoadKeys(InternalKey& locked_secret, InternalKey& unfixed_info); - -/// Returns true if key_retail.bin exist -bool IsKeyAvailable(); - -/// Decodes encrypted amiibo data returns true if output is valid -bool DecodeAmiibo(const EncryptedNTAG215File& encrypted_tag_data, NTAG215File& tag_data); - -/// Encodes plain amiibo data returns true if output is valid -bool EncodeAmiibo(const NTAG215File& tag_data, EncryptedNTAG215File& encrypted_tag_data); - -} // namespace Service::NFP::AmiiboCrypto |