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key_manager/partition_data_manager: Silence truncation compiler warnings
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f56a8da46a
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6da2ed4232
@ -98,7 +98,7 @@ std::array<u8, 144> DecryptKeyblob(const std::array<u8, 176>& encrypted_keyblob,
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return keyblob;
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}
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void KeyManager::DeriveGeneralPurposeKeys(u8 crypto_revision) {
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void KeyManager::DeriveGeneralPurposeKeys(std::size_t crypto_revision) {
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const auto kek_generation_source =
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GetKey(S128KeyType::Source, static_cast<u64>(SourceKeyType::AESKekGeneration));
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const auto key_generation_source =
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@ -270,6 +270,9 @@ static std::array<u8, size> operator^(const std::array<u8, size>& lhs,
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template <size_t target_size, size_t in_size>
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static std::array<u8, target_size> MGF1(const std::array<u8, in_size>& seed) {
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// Avoids truncation overflow within the loop below.
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static_assert(target_size <= 0xFF);
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std::array<u8, in_size + 4> seed_exp{};
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std::memcpy(seed_exp.data(), seed.data(), in_size);
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@ -277,7 +280,7 @@ static std::array<u8, target_size> MGF1(const std::array<u8, in_size>& seed) {
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size_t i = 0;
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while (out.size() < target_size) {
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out.resize(out.size() + 0x20);
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seed_exp[in_size + 3] = i;
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seed_exp[in_size + 3] = static_cast<u8>(i);
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mbedtls_sha256(seed_exp.data(), seed_exp.size(), out.data() + out.size() - 0x20, 0);
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++i;
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}
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@ -175,7 +175,7 @@ private:
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void WriteKeyToFile(KeyCategory category, std::string_view keyname,
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const std::array<u8, Size>& key);
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void DeriveGeneralPurposeKeys(u8 crypto_revision);
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void DeriveGeneralPurposeKeys(std::size_t crypto_revision);
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void SetKeyWrapped(S128KeyType id, Key128 key, u64 field1 = 0, u64 field2 = 0);
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void SetKeyWrapped(S256KeyType id, Key256 key, u64 field1 = 0, u64 field2 = 0);
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@ -332,7 +332,8 @@ FileSys::VirtualFile PartitionDataManager::GetBoot0Raw() const {
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return boot0;
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}
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PartitionDataManager::EncryptedKeyBlob PartitionDataManager::GetEncryptedKeyblob(u8 index) const {
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PartitionDataManager::EncryptedKeyBlob PartitionDataManager::GetEncryptedKeyblob(
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std::size_t index) const {
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if (HasBoot0() && index < NUM_ENCRYPTED_KEYBLOBS)
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return GetEncryptedKeyblobs()[index];
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return {};
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@ -389,7 +390,7 @@ std::array<u8, 16> PartitionDataManager::GetKeyblobMACKeySource() const {
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return FindKeyFromHex(package1_decrypted_bytes, source_hashes[0]);
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}
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std::array<u8, 16> PartitionDataManager::GetKeyblobKeySource(u8 revision) const {
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std::array<u8, 16> PartitionDataManager::GetKeyblobKeySource(std::size_t revision) const {
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if (keyblob_source_hashes[revision] == SHA256Hash{}) {
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LOG_WARNING(Crypto,
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"No keyblob source hash for crypto revision {:02X}! Cannot derive keys...",
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@ -456,11 +457,12 @@ void PartitionDataManager::DecryptPackage2(std::array<std::array<u8, 16>, 0x20>
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if (file->ReadObject(&header) != sizeof(Package2Header))
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return;
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u8 revision = 0xFF;
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std::size_t revision = 0xFF;
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if (header.magic != Common::MakeMagic('P', 'K', '2', '1')) {
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for (size_t i = 0; i < package2_keys.size(); ++i) {
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if (AttemptDecrypt(package2_keys[i], header))
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for (std::size_t i = 0; i < package2_keys.size(); ++i) {
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if (AttemptDecrypt(package2_keys[i], header)) {
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revision = i;
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}
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}
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}
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@ -34,7 +34,7 @@ public:
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// BOOT0
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bool HasBoot0() const;
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FileSys::VirtualFile GetBoot0Raw() const;
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EncryptedKeyBlob GetEncryptedKeyblob(u8 index) const;
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EncryptedKeyBlob GetEncryptedKeyblob(std::size_t index) const;
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EncryptedKeyBlobs GetEncryptedKeyblobs() const;
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std::vector<u8> GetSecureMonitor() const;
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std::array<u8, 0x10> GetPackage2KeySource() const;
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@ -46,7 +46,7 @@ public:
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std::vector<u8> GetPackage1Decrypted() const;
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std::array<u8, 0x10> GetMasterKeySource() const;
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std::array<u8, 0x10> GetKeyblobMACKeySource() const;
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std::array<u8, 0x10> GetKeyblobKeySource(u8 revision) const;
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std::array<u8, 0x10> GetKeyblobKeySource(std::size_t revision) const;
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// Fuses
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bool HasFuses() const;
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