From c79d2ca6cf076bb5704ad221ff2a500cb8a94b84 Mon Sep 17 00:00:00 2001 From: Zach Hilman Date: Sun, 23 Sep 2018 20:51:44 -0400 Subject: [PATCH] key_manager: Add keyblob support --- src/core/crypto/key_manager.cpp | 10 ++++++++++ src/core/crypto/key_manager.h | 4 ++++ 2 files changed, 14 insertions(+) diff --git a/src/core/crypto/key_manager.cpp b/src/core/crypto/key_manager.cpp index 85776cdcbd..0f1a86d1ee 100644 --- a/src/core/crypto/key_manager.cpp +++ b/src/core/crypto/key_manager.cpp @@ -21,6 +21,8 @@ namespace Core::Crypto { +constexpr u64 CURRENT_CRYPTO_REVISION = 0x5; + Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, Key128 key_seed) { Key128 out{}; @@ -37,6 +39,14 @@ Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, K return out; } +Key128 DeriveKeyblobKey(Key128 sbk, Key128 tsec, Key128 source) { + AESCipher sbk_cipher(sbk, Mode::ECB); + AESCipher tsec_cipher(tsec, Mode::ECB); + tsec_cipher.Transcode(source.data(), source.size(), source.data(), Op::Decrypt); + sbk_cipher.Transcode(source.data(), source.size(), source.data(), Op::Decrypt); + return source; +} + boost::optional DeriveSDSeed() { const FileUtil::IOFile save_43(FileUtil::GetUserPath(FileUtil::UserPath::NANDDir) + "/system/save/8000000000000043", diff --git a/src/core/crypto/key_manager.h b/src/core/crypto/key_manager.h index ffc13fa8fc..b2c386bfbd 100644 --- a/src/core/crypto/key_manager.h +++ b/src/core/crypto/key_manager.h @@ -109,6 +109,8 @@ public: private: boost::container::flat_map, Key128> s128_keys; boost::container::flat_map, Key256> s256_keys; + std::array, 0x20> encrypted_keyblobs{}; + std::array, 0x20> keyblobs{}; bool dev_mode; void LoadFromFile(const std::string& filename, bool is_title_keys); @@ -122,6 +124,8 @@ private: }; Key128 GenerateKeyEncryptionKey(Key128 source, Key128 master, Key128 kek_seed, Key128 key_seed); +Key128 DeriveKeyblobKey(Key128 sbk, Key128 tsec, Key128 source); + boost::optional DeriveSDSeed(); Loader::ResultStatus DeriveSDKeys(std::array& sd_keys, const KeyManager& keys);