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key_manager: Add keyblob support

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This commit is contained in:
Zach Hilman
2018-09-23 20:51:44 -04:00
parent e4602748d6
commit c79d2ca6cf
2 changed files with 14 additions and 0 deletions
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10
src/core/crypto/key_manager.cpp
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@ -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<Key128> sbk_cipher(sbk, Mode::ECB);
AESCipher<Key128> 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<Key128> DeriveSDSeed() {
const FileUtil::IOFile save_43(FileUtil::GetUserPath(FileUtil::UserPath::NANDDir) +
"/system/save/8000000000000043",