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Merge pull request #4483 from lioncash/constexpr-hex 

partition_data_manager: Make data arrays constexpr
This commit is contained in:
bunnei 2020-08-06 23:14:14 -04:00 committed by GitHub
parent 5cc2f99fab 4f2acc54f5
commit f5d538f118
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
4 changed files with 133 additions and 130 deletions
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34
src/common/hex_util.cpp
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

29
src/common/hex_util.h
View File

@ -14,19 +14,31 @@
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

10
src/core/crypto/key_manager.cpp
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_"},

190
src/core/crypto/partition_data_manager.cpp
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 {
@ -47,105 +47,123 @@ 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
const std::array<SHA256Hash, 0x20> keyblob_source_hashes{ // clang-format off
"8A06FE274AC491436791FDB388BCDD3AB9943BD4DEF8094418CDAC150FD73786"_array32, // keyblob_key_source_00 constexpr std::array keyblob_source_hashes{
"2D5CAEB2521FEF70B47E17D6D0F11F8CE2C1E442A979AD8035832C4E9FBCCC4B"_array32, // keyblob_key_source_01 AsArray("8A06FE274AC491436791FDB388BCDD3AB9943BD4DEF8094418CDAC150FD73786"), // keyblob_key_source_00
"61C5005E713BAE780641683AF43E5F5C0E03671117F702F401282847D2FC6064"_array32, // keyblob_key_source_02 AsArray("2D5CAEB2521FEF70B47E17D6D0F11F8CE2C1E442A979AD8035832C4E9FBCCC4B"), // keyblob_key_source_01
"8E9795928E1C4428E1B78F0BE724D7294D6934689C11B190943923B9D5B85903"_array32, // keyblob_key_source_03 AsArray("61C5005E713BAE780641683AF43E5F5C0E03671117F702F401282847D2FC6064"), // keyblob_key_source_02
"95FA33AF95AFF9D9B61D164655B32710ED8D615D46C7D6CC3CC70481B686B402"_array32, // keyblob_key_source_04 AsArray("8E9795928E1C4428E1B78F0BE724D7294D6934689C11B190943923B9D5B85903"), // keyblob_key_source_03
"3F5BE7B3C8B1ABD8C10B4B703D44766BA08730562C172A4FE0D6B866B3E2DB3E"_array32, // keyblob_key_source_05 AsArray("95FA33AF95AFF9D9B61D164655B32710ED8D615D46C7D6CC3CC70481B686B402"), // keyblob_key_source_04
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_06 AsArray("3F5BE7B3C8B1ABD8C10B4B703D44766BA08730562C172A4FE0D6B866B3E2DB3E"), // keyblob_key_source_05
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_07 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_06
AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_07
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_08 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_08
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_09 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_09
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0A AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0A
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0B AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0B
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0C AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0C
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0D AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0D
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0E AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0E
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_0F AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_0F
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_10 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_10
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_11 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_11
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_12 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_12
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_13 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_13
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_14 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_14
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_15 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_15
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_16 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_16
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_17 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_17
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_18 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_18
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_19 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_19
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1A AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1A
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1B AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1B
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1C AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1C
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1D AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1D
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1E AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1E
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // keyblob_key_source_1F AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // keyblob_key_source_1F
}; };
// clang-format on
const std::array<SHA256Hash, 0x20> master_key_hashes{ // clang-format off
"0EE359BE3C864BB0782E1D70A718A0342C551EED28C369754F9C4F691BECF7CA"_array32, // master_key_00 constexpr std::array master_key_hashes{
"4FE707B7E4ABDAF727C894AAF13B1351BFE2AC90D875F73B2E20FA94B9CC661E"_array32, // master_key_01 AsArray("0EE359BE3C864BB0782E1D70A718A0342C551EED28C369754F9C4F691BECF7CA"), // master_key_00
"79277C0237A2252EC3DFAC1F7C359C2B3D121E9DB15BB9AB4C2B4408D2F3AE09"_array32, // master_key_02 AsArray("4FE707B7E4ABDAF727C894AAF13B1351BFE2AC90D875F73B2E20FA94B9CC661E"), // master_key_01
"4F36C565D13325F65EE134073C6A578FFCB0008E02D69400836844EAB7432754"_array32, // master_key_03 AsArray("79277C0237A2252EC3DFAC1F7C359C2B3D121E9DB15BB9AB4C2B4408D2F3AE09"), // master_key_02
"75FF1D95D26113550EE6FCC20ACB58E97EDEB3A2FF52543ED5AEC63BDCC3DA50"_array32, // master_key_04 AsArray("4F36C565D13325F65EE134073C6A578FFCB0008E02D69400836844EAB7432754"), // master_key_03
"EBE2BCD6704673EC0F88A187BB2AD9F1CC82B718C389425941BDC194DC46B0DD"_array32, // master_key_05 AsArray("75FF1D95D26113550EE6FCC20ACB58E97EDEB3A2FF52543ED5AEC63BDCC3DA50"), // master_key_04
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_06 AsArray("EBE2BCD6704673EC0F88A187BB2AD9F1CC82B718C389425941BDC194DC46B0DD"), // master_key_05
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_07 AsArray("9497E6779F5D840F2BBA1DE4E95BA1D6F21EFC94717D5AE5CA37D7EC5BD37A19"), // master_key_06
AsArray("4EC96B8CB01B8DCE382149443430B2B6EBCB2983348AFA04A25E53609DABEDF6"), // master_key_07
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_08 AsArray("2998E2E23609BC2675FF062A2D64AF5B1B78DFF463B24119D64A1B64F01B2D51"), // master_key_08
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_09 AsArray("9D486A98067C44B37CF173D3BF577891EB6081FF6B4A166347D9DBBF7025076B"), // master_key_09
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0A AsArray("4EC5A237A75A083A9C5F6CF615601522A7F822D06BD4BA32612C9CEBBB29BD45"), // master_key_0A
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0B AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0B
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0C AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0C
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0D AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0D
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0E AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0E
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_0F AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_0F
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_10 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_10
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_11 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_11
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_12 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_12
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_13 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_13
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_14 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_14
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_15 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_15
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_16 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_16
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_17 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_17
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_18 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_18
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_19 AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_19
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1A AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1A
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1B AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1B
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1C AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1C
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1D AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1D
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1E AsArray("0000000000000000000000000000000000000000000000000000000000000000"), // master_key_1E
"0000000000000000000000000000000000000000000000000000000000000000"_array32, // master_key_1F 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) { 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;