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.
This commit is contained in:
Lioncash 2020-08-03 13:18:43 -04:00
parent 9b75481755
commit 7f0f37fca7
4 changed files with 133 additions and 130 deletions

View file

@ -3,21 +3,9 @@
// Refer to the license.txt file included. // Refer to the license.txt file included.
#include "common/hex_util.h" #include "common/hex_util.h"
#include "common/logging/log.h"
namespace Common { 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<u8> HexStringToVector(std::string_view str, bool little_endian) { std::vector<u8> HexStringToVector(std::string_view str, bool little_endian) {
std::vector<u8> out(str.size() / 2); std::vector<u8> out(str.size() / 2);
if (little_endian) { if (little_endian) {
@ -30,26 +18,4 @@ std::vector<u8> HexStringToVector(std::string_view str, bool little_endian) {
return out; return out;
} }
std::array<u8, 16> 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<u8, 32> 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 } // namespace Common

View file

@ -14,20 +14,32 @@
namespace Common { 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<u8> HexStringToVector(std::string_view str, bool little_endian); std::vector<u8> HexStringToVector(std::string_view str, bool little_endian);
template <std::size_t Size, bool le = false> template <std::size_t Size, bool le = false>
std::array<u8, Size> HexStringToArray(std::string_view str) { constexpr std::array<u8, Size> HexStringToArray(std::string_view str) {
std::array<u8, Size> out{}; std::array<u8, Size> out{};
if constexpr (le) { 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]); out[i / 2] = (ToHexNibble(str[i]) << 4) | ToHexNibble(str[i + 1]);
}
} else { } 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]); out[i / 2] = (ToHexNibble(str[i]) << 4) | ToHexNibble(str[i + 1]);
} }
}
return out; return out;
} }
@ -48,7 +60,12 @@ std::string HexToString(const ContiguousContainer& data, bool upper = true) {
return out; return out;
} }
std::array<u8, 0x10> operator"" _array16(const char* str, std::size_t len); constexpr std::array<u8, 16> AsArray(const char (&data)[17]) {
std::array<u8, 0x20> operator"" _array32(const char* str, std::size_t len); return HexStringToArray<16>(data);
}
constexpr std::array<u8, 32> AsArray(const char (&data)[65]) {
return HexStringToArray<32>(data);
}
} // namespace Common } // namespace Common

View file

@ -40,12 +40,14 @@ namespace Core::Crypto {
constexpr u64 CURRENT_CRYPTO_REVISION = 0x5; constexpr u64 CURRENT_CRYPTO_REVISION = 0x5;
constexpr u64 FULL_TICKET_SIZE = 0x400; constexpr u64 FULL_TICKET_SIZE = 0x400;
using namespace Common; using Common::AsArray;
const std::array<SHA256Hash, 2> eticket_source_hashes{ // clang-format off
"B71DB271DC338DF380AA2C4335EF8873B1AFD408E80B3582D8719FC81C5E511C"_array32, // eticket_rsa_kek_source constexpr std::array eticket_source_hashes{
"E8965A187D30E57869F562D04383C996DE487BBA5761363D2D4D32391866A85C"_array32, // eticket_rsa_kekek_source AsArray("B71DB271DC338DF380AA2C4335EF8873B1AFD408E80B3582D8719FC81C5E511C"), // eticket_rsa_kek_source
AsArray("E8965A187D30E57869F562D04383C996DE487BBA5761363D2D4D32391866A85C"), // eticket_rsa_kekek_source
}; };
// clang-format on
const std::map<std::pair<S128KeyType, u64>, std::string> KEYS_VARIABLE_LENGTH{ const std::map<std::pair<S128KeyType, u64>, std::string> KEYS_VARIABLE_LENGTH{
{{S128KeyType::Master, 0}, "master_key_"}, {{S128KeyType::Master, 0}, "master_key_"},

View file

@ -27,7 +27,7 @@
#include "core/file_sys/vfs_offset.h" #include "core/file_sys/vfs_offset.h"
#include "core/file_sys/vfs_vector.h" #include "core/file_sys/vfs_vector.h"
using namespace Common; using Common::AsArray;
namespace Core::Crypto { namespace Core::Crypto {
@ -47,106 +47,124 @@ struct Package2Header {
}; };
static_assert(sizeof(Package2Header) == 0x200, "Package2Header has incorrect size."); static_assert(sizeof(Package2Header) == 0x200, "Package2Header has incorrect size.");
const std::array<SHA256Hash, 0x10> source_hashes{ // clang-format off
"B24BD293259DBC7AC5D63F88E60C59792498E6FC5443402C7FFE87EE8B61A3F0"_array32, // keyblob_mac_key_source constexpr std::array source_hashes{
"7944862A3A5C31C6720595EFD302245ABD1B54CCDCF33000557681E65C5664A4"_array32, // master_key_source AsArray("B24BD293259DBC7AC5D63F88E60C59792498E6FC5443402C7FFE87EE8B61A3F0"), // keyblob_mac_key_source
"21E2DF100FC9E094DB51B47B9B1D6E94ED379DB8B547955BEF8FE08D8DD35603"_array32, // package2_key_source AsArray("7944862A3A5C31C6720595EFD302245ABD1B54CCDCF33000557681E65C5664A4"), // master_key_source
"FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"_array32, // aes_kek_generation_source AsArray("21E2DF100FC9E094DB51B47B9B1D6E94ED379DB8B547955BEF8FE08D8DD35603"), // package2_key_source
"FBD10056999EDC7ACDB96098E47E2C3606230270D23281E671F0F389FC5BC585"_array32, // aes_key_generation_source AsArray("FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"), // aes_kek_generation_source
"C48B619827986C7F4E3081D59DB2B460C84312650E9A8E6B458E53E8CBCA4E87"_array32, // titlekek_source AsArray("FBD10056999EDC7ACDB96098E47E2C3606230270D23281E671F0F389FC5BC585"), // aes_key_generation_source
"04AD66143C726B2A139FB6B21128B46F56C553B2B3887110304298D8D0092D9E"_array32, // key_area_key_application_source AsArray("C48B619827986C7F4E3081D59DB2B460C84312650E9A8E6B458E53E8CBCA4E87"), // titlekek_source
"FD434000C8FF2B26F8E9A9D2D2C12F6BE5773CBB9DC86300E1BD99F8EA33A417"_array32, // key_area_key_ocean_source AsArray("04AD66143C726B2A139FB6B21128B46F56C553B2B3887110304298D8D0092D9E"), // key_area_key_application_source
"1F17B1FD51AD1C2379B58F152CA4912EC2106441E51722F38700D5937A1162F7"_array32, // key_area_key_system_source AsArray("FD434000C8FF2B26F8E9A9D2D2C12F6BE5773CBB9DC86300E1BD99F8EA33A417"), // key_area_key_ocean_source
"6B2ED877C2C52334AC51E59ABFA7EC457F4A7D01E46291E9F2EAA45F011D24B7"_array32, // sd_card_kek_source AsArray("1F17B1FD51AD1C2379B58F152CA4912EC2106441E51722F38700D5937A1162F7"), // key_area_key_system_source
"D482743563D3EA5DCDC3B74E97C9AC8A342164FA041A1DC80F17F6D31E4BC01C"_array32, // sd_card_save_key_source AsArray("6B2ED877C2C52334AC51E59ABFA7EC457F4A7D01E46291E9F2EAA45F011D24B7"), // sd_card_kek_source
"2E751CECF7D93A2B957BD5FFCB082FD038CC2853219DD3092C6DAB9838F5A7CC"_array32, // sd_card_nca_key_source AsArray("D482743563D3EA5DCDC3B74E97C9AC8A342164FA041A1DC80F17F6D31E4BC01C"), // sd_card_save_key_source
"1888CAED5551B3EDE01499E87CE0D86827F80820EFB275921055AA4E2ABDFFC2"_array32, // header_kek_source AsArray("2E751CECF7D93A2B957BD5FFCB082FD038CC2853219DD3092C6DAB9838F5A7CC"), // sd_card_nca_key_source
"8F783E46852DF6BE0BA4E19273C4ADBAEE16380043E1B8C418C4089A8BD64AA6"_array32, // header_key_source AsArray("1888CAED5551B3EDE01499E87CE0D86827F80820EFB275921055AA4E2ABDFFC2"), // header_kek_source
"D1757E52F1AE55FA882EC690BC6F954AC46A83DC22F277F8806BD55577C6EED7"_array32, // rsa_kek_seed3 AsArray("8F783E46852DF6BE0BA4E19273C4ADBAEE16380043E1B8C418C4089A8BD64AA6"), // header_key_source
"FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"_array32, // rsa_kek_mask0 AsArray("D1757E52F1AE55FA882EC690BC6F954AC46A83DC22F277F8806BD55577C6EED7"), // rsa_kek_seed3
AsArray("FC02B9D37B42D7A1452E71444F1F700311D1132E301A83B16062E72A78175085"), // rsa_kek_mask0
};
// 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
};
// 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;
}; };
const std::array<SHA256Hash, 0x20> 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
};
const std::array<SHA256Hash, 0x20> 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
};
static u8 CalculateMaxKeyblobSourceHash() {
for (s8 i = 0x1F; i >= 0; --i) { for (s8 i = 0x1F; i >= 0; --i) {
if (keyblob_source_hashes[i] != SHA256Hash{}) if (!is_zero(keyblob_source_hashes[i])) {
return static_cast<u8>(i + 1); return static_cast<u8>(i + 1);
} }
}
return 0; return 0;
} }