From 7f0f37fca781a578c7736f59cf70c859fdde271a Mon Sep 17 00:00:00 2001 From: Lioncash Date: Mon, 3 Aug 2020 13:18:43 -0400 Subject: partition_data_manager: Make data arrays constexpr Previously the constructor for all of these would run at program startup, consuming time before the application can enter main(). This is also particularly dangerous, given the logging system wouldn't have been initialized properly yet, yet the program would use the logs to signify an error. To rectify this, we can replace the literals with constexpr functions that perform the conversion at compile-time, completely eliminating the runtime cost of initializing these arrays. --- src/common/hex_util.cpp | 34 ----- src/common/hex_util.h | 29 +++- src/core/crypto/key_manager.cpp | 10 +- src/core/crypto/partition_data_manager.cpp | 206 ++++++++++++++++------------- 4 files changed, 141 insertions(+), 138 deletions(-) (limited to 'src') diff --git a/src/common/hex_util.cpp b/src/common/hex_util.cpp index c2f6cf0f6..74f52dd11 100644 --- a/src/common/hex_util.cpp +++ b/src/common/hex_util.cpp @@ -3,21 +3,9 @@ // Refer to the license.txt file included. #include "common/hex_util.h" -#include "common/logging/log.h" namespace Common { -u8 ToHexNibble(char c1) { - if (c1 >= 65 && c1 <= 70) - return c1 - 55; - if (c1 >= 97 && c1 <= 102) - return c1 - 87; - if (c1 >= 48 && c1 <= 57) - return c1 - 48; - LOG_ERROR(Common, "Invalid hex digit: 0x{:02X}", c1); - return 0; -} - std::vector HexStringToVector(std::string_view str, bool little_endian) { std::vector out(str.size() / 2); if (little_endian) { @@ -30,26 +18,4 @@ std::vector HexStringToVector(std::string_view str, bool little_endian) { return out; } -std::array operator""_array16(const char* str, std::size_t len) { - if (len != 32) { - LOG_ERROR(Common, - "Attempting to parse string to array that is not of correct size (expected=32, " - "actual={}).", - len); - return {}; - } - return HexStringToArray<16>(str); -} - -std::array operator""_array32(const char* str, std::size_t len) { - if (len != 64) { - LOG_ERROR(Common, - "Attempting to parse string to array that is not of correct size (expected=64, " - "actual={}).", - len); - return {}; - } - return HexStringToArray<32>(str); -} - } // namespace Common diff --git a/src/common/hex_util.h b/src/common/hex_util.h index bb4736f96..a0a0e78a4 100644 --- a/src/common/hex_util.h +++ b/src/common/hex_util.h @@ -14,19 +14,31 @@ namespace Common { -u8 ToHexNibble(char c1); +constexpr u8 ToHexNibble(char c) { + if (c >= 65 && c <= 70) { + return c - 55; + } + + if (c >= 97 && c <= 102) { + return c - 87; + } + + return c - 48; +} std::vector HexStringToVector(std::string_view str, bool little_endian); template -std::array HexStringToArray(std::string_view str) { +constexpr std::array HexStringToArray(std::string_view str) { std::array out{}; if constexpr (le) { - for (std::size_t i = 2 * Size - 2; i <= 2 * Size; i -= 2) + for (std::size_t i = 2 * Size - 2; i <= 2 * Size; i -= 2) { out[i / 2] = (ToHexNibble(str[i]) << 4) | ToHexNibble(str[i + 1]); + } } else { - for (std::size_t i = 0; i < 2 * Size; i += 2) + for (std::size_t i = 0; i < 2 * Size; i += 2) { out[i / 2] = (ToHexNibble(str[i]) << 4) | ToHexNibble(str[i + 1]); + } } return out; } @@ -48,7 +60,12 @@ std::string HexToString(const ContiguousContainer& data, bool upper = true) { return out; } -std::array operator"" _array16(const char* str, std::size_t len); -std::array operator"" _array32(const char* str, std::size_t len); +constexpr std::array AsArray(const char (&data)[17]) { + return HexStringToArray<16>(data); +} + +constexpr std::array AsArray(const char (&data)[65]) { + return HexStringToArray<32>(data); +} } // namespace Common diff --git a/src/core/crypto/key_manager.cpp b/src/core/crypto/key_manager.cpp index f87fe0abc..c09f7ad41 100644 --- a/src/core/crypto/key_manager.cpp +++ b/src/core/crypto/key_manager.cpp @@ -40,12 +40,14 @@ namespace Core::Crypto { constexpr u64 CURRENT_CRYPTO_REVISION = 0x5; constexpr u64 FULL_TICKET_SIZE = 0x400; -using namespace Common; +using Common::AsArray; -const std::array eticket_source_hashes{ - "B71DB271DC338DF380AA2C4335EF8873B1AFD408E80B3582D8719FC81C5E511C"_array32, // eticket_rsa_kek_source - "E8965A187D30E57869F562D04383C996DE487BBA5761363D2D4D32391866A85C"_array32, // eticket_rsa_kekek_source +// clang-format off +constexpr std::array eticket_source_hashes{ + AsArray("B71DB271DC338DF380AA2C4335EF8873B1AFD408E80B3582D8719FC81C5E511C"), // eticket_rsa_kek_source + AsArray("E8965A187D30E57869F562D04383C996DE487BBA5761363D2D4D32391866A85C"), // eticket_rsa_kekek_source }; +// clang-format on const std::map, std::string> KEYS_VARIABLE_LENGTH{ {{S128KeyType::Master, 0}, "master_key_"}, diff --git a/src/core/crypto/partition_data_manager.cpp b/src/core/crypto/partition_data_manager.cpp index 7ed71ac3a..4548ee2b2 100644 --- a/src/core/crypto/partition_data_manager.cpp +++ b/src/core/crypto/partition_data_manager.cpp @@ -27,7 +27,7 @@ #include "core/file_sys/vfs_offset.h" #include "core/file_sys/vfs_vector.h" -using namespace Common; +using Common::AsArray; namespace Core::Crypto { @@ -47,105 +47,123 @@ struct Package2Header { }; static_assert(sizeof(Package2Header) == 0x200, "Package2Header has incorrect size."); -const std::array source_hashes{ - "B24BD293259DBC7AC5D63F88E60C59792498E6FC5443402C7FFE87EE8B61A3F0"_array32, // keyblob_mac_key_source - "7944862A3A5C31C6720595EFD302245ABD1B54CCDCF33000557681E65C5664A4"_array32, // master_key_source - "21E2DF100FC9E094DB51B47B9B1D6E94ED379DB8B547955BEF8FE08D8DD35603"_array32, // package2_key_source - "FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"_array32, // aes_kek_generation_source - "FBD10056999EDC7ACDB96098E47E2C3606230270D23281E671F0F389FC5BC585"_array32, // aes_key_generation_source - "C48B619827986C7F4E3081D59DB2B460C84312650E9A8E6B458E53E8CBCA4E87"_array32, // titlekek_source - "04AD66143C726B2A139FB6B21128B46F56C553B2B3887110304298D8D0092D9E"_array32, // key_area_key_application_source - "FD434000C8FF2B26F8E9A9D2D2C12F6BE5773CBB9DC86300E1BD99F8EA33A417"_array32, // key_area_key_ocean_source - "1F17B1FD51AD1C2379B58F152CA4912EC2106441E51722F38700D5937A1162F7"_array32, // key_area_key_system_source - "6B2ED877C2C52334AC51E59ABFA7EC457F4A7D01E46291E9F2EAA45F011D24B7"_array32, // sd_card_kek_source - "D482743563D3EA5DCDC3B74E97C9AC8A342164FA041A1DC80F17F6D31E4BC01C"_array32, // sd_card_save_key_source - "2E751CECF7D93A2B957BD5FFCB082FD038CC2853219DD3092C6DAB9838F5A7CC"_array32, // sd_card_nca_key_source - "1888CAED5551B3EDE01499E87CE0D86827F80820EFB275921055AA4E2ABDFFC2"_array32, // header_kek_source - "8F783E46852DF6BE0BA4E19273C4ADBAEE16380043E1B8C418C4089A8BD64AA6"_array32, // header_key_source - "D1757E52F1AE55FA882EC690BC6F954AC46A83DC22F277F8806BD55577C6EED7"_array32, // rsa_kek_seed3 - "FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"_array32, // rsa_kek_mask0 +// clang-format off +constexpr std::array source_hashes{ + AsArray("B24BD293259DBC7AC5D63F88E60C59792498E6FC5443402C7FFE87EE8B61A3F0"), // keyblob_mac_key_source + AsArray("7944862A3A5C31C6720595EFD302245ABD1B54CCDCF33000557681E65C5664A4"), // master_key_source + AsArray("21E2DF100FC9E094DB51B47B9B1D6E94ED379DB8B547955BEF8FE08D8DD35603"), // package2_key_source + AsArray("FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"), // aes_kek_generation_source + AsArray("FBD10056999EDC7ACDB96098E47E2C3606230270D23281E671F0F389FC5BC585"), // aes_key_generation_source + AsArray("C48B619827986C7F4E3081D59DB2B460C84312650E9A8E6B458E53E8CBCA4E87"), // titlekek_source + AsArray("04AD66143C726B2A139FB6B21128B46F56C553B2B3887110304298D8D0092D9E"), // key_area_key_application_source + AsArray("FD434000C8FF2B26F8E9A9D2D2C12F6BE5773CBB9DC86300E1BD99F8EA33A417"), // key_area_key_ocean_source + AsArray("1F17B1FD51AD1C2379B58F152CA4912EC2106441E51722F38700D5937A1162F7"), // key_area_key_system_source + AsArray("6B2ED877C2C52334AC51E59ABFA7EC457F4A7D01E46291E9F2EAA45F011D24B7"), // sd_card_kek_source + AsArray("D482743563D3EA5DCDC3B74E97C9AC8A342164FA041A1DC80F17F6D31E4BC01C"), // sd_card_save_key_source + AsArray("2E751CECF7D93A2B957BD5FFCB082FD038CC2853219DD3092C6DAB9838F5A7CC"), // sd_card_nca_key_source + AsArray("1888CAED5551B3EDE01499E87CE0D86827F80820EFB275921055AA4E2ABDFFC2"), // header_kek_source + AsArray("8F783E46852DF6BE0BA4E19273C4ADBAEE16380043E1B8C418C4089A8BD64AA6"), // header_key_source + AsArray("D1757E52F1AE55FA882EC690BC6F954AC46A83DC22F277F8806BD55577C6EED7"), // rsa_kek_seed3 + AsArray("FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"), // rsa_kek_mask0 }; - -const std::array keyblob_source_hashes{ - "8A06FE274AC491436791FDB388BCDD3AB9943BD4DEF8094418CDAC150FD73786"_array32, // keyblob_key_source_00 - "2D5CAEB2521FEF70B47E17D6D0F11F8CE2C1E442A979AD8035832C4E9FBCCC4B"_array32, // keyblob_key_source_01 - "61C5005E713BAE780641683AF43E5F5C0E03671117F702F401282847D2FC6064"_array32, // keyblob_key_source_02 - "8E9795928E1C4428E1B78F0BE724D7294D6934689C11B190943923B9D5B85903"_array32, // keyblob_key_source_03 - "95FA33AF95AFF9D9B61D164655B32710ED8D615D46C7D6CC3CC70481B686B402"_array32, // keyblob_key_source_04 - "3F5BE7B3C8B1ABD8C10B4B703D44766BA08730562C172A4FE0D6B866B3E2DB3E"_array32, // keyblob_key_source_05 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_06 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_07 - - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_08 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_09 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0A - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0B - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0C - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0D - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0E - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0F - - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_10 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_11 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_12 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_13 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_14 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_15 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_16 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_17 - - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_18 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_19 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1A - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1B - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1C - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1D - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1E - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1F +// clang-format on + +// clang-format off +constexpr std::array keyblob_source_hashes{ + AsArray("8A06FE274AC491436791FDB388BCDD3AB9943BD4DEF8094418CDAC150FD73786"), // keyblob_key_source_00 + AsArray("2D5CAEB2521FEF70B47E17D6D0F11F8CE2C1E442A979AD8035832C4E9FBCCC4B"), // keyblob_key_source_01 + AsArray("61C5005E713BAE780641683AF43E5F5C0E03671117F702F401282847D2FC6064"), // keyblob_key_source_02 + AsArray("8E9795928E1C4428E1B78F0BE724D7294D6934689C11B190943923B9D5B85903"), // keyblob_key_source_03 + AsArray("95FA33AF95AFF9D9B61D164655B32710ED8D615D46C7D6CC3CC70481B686B402"), // keyblob_key_source_04 + AsArray("3F5BE7B3C8B1ABD8C10B4B703D44766BA08730562C172A4FE0D6B866B3E2DB3E"), // keyblob_key_source_05 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_06 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_07 + + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_08 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_09 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0A + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0B + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0C + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0D + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0E + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0F + + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_10 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_11 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_12 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_13 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_14 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_15 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_16 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_17 + + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_18 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_19 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1A + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1B + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1C + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1D + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1E + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1F }; - -const std::array master_key_hashes{ - "0EE359BE3C864BB0782E1D70A718A0342C551EED28C369754F9C4F691BECF7CA"_array32, // master_key_00 - "4FE707B7E4ABDAF727C894AAF13B1351BFE2AC90D875F73B2E20FA94B9CC661E"_array32, // master_key_01 - "79277C0237A2252EC3DFAC1F7C359C2B3D121E9DB15BB9AB4C2B4408D2F3AE09"_array32, // master_key_02 - "4F36C565D13325F65EE134073C6A578FFCB0008E02D69400836844EAB7432754"_array32, // master_key_03 - "75FF1D95D26113550EE6FCC20ACB58E97EDEB3A2FF52543ED5AEC63BDCC3DA50"_array32, // master_key_04 - "EBE2BCD6704673EC0F88A187BB2AD9F1CC82B718C389425941BDC194DC46B0DD"_array32, // master_key_05 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_06 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_07 - - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_08 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_09 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0A - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0B - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0C - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0D - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0E - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0F - - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_10 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_11 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_12 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_13 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_14 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_15 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_16 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_17 - - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_18 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_19 - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1A - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1B - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1C - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1D - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1E - "0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1F +// clang-format on + +// clang-format off +constexpr std::array master_key_hashes{ + AsArray("0EE359BE3C864BB0782E1D70A718A0342C551EED28C369754F9C4F691BECF7CA"), // master_key_00 + AsArray("4FE707B7E4ABDAF727C894AAF13B1351BFE2AC90D875F73B2E20FA94B9CC661E"), // master_key_01 + AsArray("79277C0237A2252EC3DFAC1F7C359C2B3D121E9DB15BB9AB4C2B4408D2F3AE09"), // master_key_02 + AsArray("4F36C565D13325F65EE134073C6A578FFCB0008E02D69400836844EAB7432754"), // master_key_03 + AsArray("75FF1D95D26113550EE6FCC20ACB58E97EDEB3A2FF52543ED5AEC63BDCC3DA50"), // master_key_04 + AsArray("EBE2BCD6704673EC0F88A187BB2AD9F1CC82B718C389425941BDC194DC46B0DD"), // master_key_05 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_06 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_07 + + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_08 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_09 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0A + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0B + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0C + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0D + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0E + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0F + + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_10 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_11 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_12 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_13 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_14 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_15 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_16 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_17 + + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_18 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_19 + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1A + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1B + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1C + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1D + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1E + AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1F }; +// clang-format on + +static constexpr u8 CalculateMaxKeyblobSourceHash() { + const auto is_zero = [](const auto& data) { + // TODO: Replace with std::all_of whenever mingw decides to update their + // libraries to include the constexpr variant of it. + for (const auto element : data) { + if (element != 0) { + return false; + } + } + return true; + }; -static u8 CalculateMaxKeyblobSourceHash() { for (s8 i = 0x1F; i >= 0; --i) { - if (keyblob_source_hashes[i] != SHA256Hash{}) + if (!is_zero(keyblob_source_hashes[i])) { return static_cast(i + 1); + } } return 0; -- cgit v1.2.3