diff options
author | Zach Hilman <zachhilman@gmail.com> | 2019-05-26 19:01:42 +0200 |
---|---|---|
committer | Zach Hilman <zachhilman@gmail.com> | 2019-07-08 03:38:33 +0200 |
commit | 50d541407507edc2f29ad6a46f3f17724e52f7f7 (patch) | |
tree | 2a63feb14069c769a85a512a42d1447c05634027 /src/core/crypto/key_manager.cpp | |
parent | es: Populate/synthesize tickets on construction (diff) | |
download | yuzu-50d541407507edc2f29ad6a46f3f17724e52f7f7.tar yuzu-50d541407507edc2f29ad6a46f3f17724e52f7f7.tar.gz yuzu-50d541407507edc2f29ad6a46f3f17724e52f7f7.tar.bz2 yuzu-50d541407507edc2f29ad6a46f3f17724e52f7f7.tar.lz yuzu-50d541407507edc2f29ad6a46f3f17724e52f7f7.tar.xz yuzu-50d541407507edc2f29ad6a46f3f17724e52f7f7.tar.zst yuzu-50d541407507edc2f29ad6a46f3f17724e52f7f7.zip |
Diffstat (limited to '')
-rw-r--r-- | src/core/crypto/key_manager.cpp | 91 |
1 files changed, 56 insertions, 35 deletions
diff --git a/src/core/crypto/key_manager.cpp b/src/core/crypto/key_manager.cpp index 3c51e3dc2..46aceec3d 100644 --- a/src/core/crypto/key_manager.cpp +++ b/src/core/crypto/key_manager.cpp @@ -56,6 +56,13 @@ const std::map<std::pair<S128KeyType, u64>, std::string> KEYS_VARIABLE_LENGTH{ {{S128KeyType::KeyblobMAC, 0}, "keyblob_mac_key_"}, }; +namespace { +template <std::size_t Size> +bool IsAllZeroArray(const std::array<u8, Size>& array) { + return std::all_of(array.begin(), array.end(), [](const auto& elem) { return elem == 0; }); +} +} // namespace + u64 GetSignatureTypeDataSize(SignatureType type) { switch (type) { case SignatureType::RSA_4096_SHA1: @@ -85,47 +92,61 @@ u64 GetSignatureTypePaddingSize(SignatureType type) { UNREACHABLE(); } +SignatureType Ticket::GetSignatureType() const { + if (auto ticket = std::get_if<RSA4096Ticket>(&data)) { + return ticket->sig_type; + } + if (auto ticket = std::get_if<RSA2048Ticket>(&data)) { + return ticket->sig_type; + } + if (auto ticket = std::get_if<ECDSATicket>(&data)) { + return ticket->sig_type; + } + + UNREACHABLE(); +} + TicketData& Ticket::GetData() { - switch (sig_type) { - case SignatureType::RSA_4096_SHA1: - case SignatureType::RSA_4096_SHA256: - return rsa_4096.data; - case SignatureType::RSA_2048_SHA1: - case SignatureType::RSA_2048_SHA256: - return rsa_2048.data; - case SignatureType::ECDSA_SHA1: - case SignatureType::ECDSA_SHA256: - return ecdsa.data; + if (auto ticket = std::get_if<RSA4096Ticket>(&data)) { + return ticket->data; } + if (auto ticket = std::get_if<RSA2048Ticket>(&data)) { + return ticket->data; + } + if (auto ticket = std::get_if<ECDSATicket>(&data)) { + return ticket->data; + } + UNREACHABLE(); } const TicketData& Ticket::GetData() const { - switch (sig_type) { - case SignatureType::RSA_4096_SHA1: - case SignatureType::RSA_4096_SHA256: - return rsa_4096.data; - case SignatureType::RSA_2048_SHA1: - case SignatureType::RSA_2048_SHA256: - return rsa_2048.data; - case SignatureType::ECDSA_SHA1: - case SignatureType::ECDSA_SHA256: - return ecdsa.data; + if (auto ticket = std::get_if<RSA4096Ticket>(&data)) { + return ticket->data; + } + if (auto ticket = std::get_if<RSA2048Ticket>(&data)) { + return ticket->data; } + if (auto ticket = std::get_if<ECDSATicket>(&data)) { + return ticket->data; + } + UNREACHABLE(); } u64 Ticket::GetSize() const { + const auto sig_type = GetSignatureType(); + return sizeof(SignatureType) + GetSignatureTypeDataSize(sig_type) + GetSignatureTypePaddingSize(sig_type) + sizeof(TicketData); } -Ticket Ticket::SynthesizeCommon(Key128 title_key, std::array<u8, 16> rights_id) { - Ticket out{}; +Ticket Ticket::SynthesizeCommon(Key128 title_key, const std::array<u8, 16>& rights_id) { + RSA2048Ticket out{}; out.sig_type = SignatureType::RSA_2048_SHA256; - out.GetData().rights_id = rights_id; - out.GetData().title_key_common = title_key; - return out; + out.data.rights_id = rights_id; + out.data.title_key_common = title_key; + return Ticket{out}; } Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, Key128 key_seed) { @@ -208,14 +229,13 @@ void KeyManager::DeriveGeneralPurposeKeys(std::size_t crypto_revision) { } } -RSAKeyPair<2048> KeyManager::GetETicketRSAKey() { - if (eticket_extended_kek == std::array<u8, 576>{} || !HasKey(S128KeyType::ETicketRSAKek)) +RSAKeyPair<2048> KeyManager::GetETicketRSAKey() const { + if (IsAllZeroArray(eticket_extended_kek) || !HasKey(S128KeyType::ETicketRSAKek)) return {}; const auto eticket_final = GetKey(S128KeyType::ETicketRSAKek); - std::vector<u8> extended_iv(0x10); - std::memcpy(extended_iv.data(), eticket_extended_kek.data(), extended_iv.size()); + std::vector<u8> extended_iv(eticket_extended_kek.begin(), eticket_extended_kek.begin() + 0x10); std::array<u8, 0x230> extended_dec{}; AESCipher<Key128> rsa_1(eticket_final, Mode::CTR); rsa_1.SetIV(extended_iv); @@ -1001,13 +1021,14 @@ void KeyManager::PopulateTickets() { void KeyManager::SynthesizeTickets() { for (const auto& key : s128_keys) { - if (key.first.type == S128KeyType::Titlekey) { - u128 rights_id{key.first.field1, key.first.field2}; - Key128 rights_id_2; - std::memcpy(rights_id_2.data(), rights_id.data(), rights_id_2.size()); - const auto ticket = Ticket::SynthesizeCommon(key.second, rights_id_2); - common_tickets.insert_or_assign(rights_id, ticket); + if (key.first.type != S128KeyType::Titlekey) { + continue; } + u128 rights_id{key.first.field1, key.first.field2}; + Key128 rights_id_2; + std::memcpy(rights_id_2.data(), rights_id.data(), rights_id_2.size()); + const auto ticket = Ticket::SynthesizeCommon(key.second, rights_id_2); + common_tickets.insert_or_assign(rights_id, ticket); } } |