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Modified iclass recover operations

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1- Renamed legreclookup to legbrute to be in line with the command name
2- Updated estimate values with speed increase gains
3- Improved some if statements readability in iclass.c and added start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER; to increase speed by ~8% (1.86 loops per second to 2.01 loops per second = ~560 more loops per hour).

Tried disabling some arm communications/comments but the speed increase was negligible (~1 sec / 1000 updates).
This commit is contained in:
Antiklesys 2025-05-30 12:36:42 +08:00
commit 04cfe2a43e
3 changed files with 25 additions and 16 deletions
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6
client/src/cmdhficlass.c
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@ -4578,7 +4578,7 @@ void generate_key_block_inverted(const uint8_t *startingKey, uint64_t index, uin
}
}
static int CmdHFiClassLegRecLookUp(const char *Cmd) {
static int CmdHFiClassLegBrute(const char *Cmd) {
//Standalone Command Start
CLIParserContext *ctx;
@ -4805,7 +4805,7 @@ static int CmdHFiClassLegacyRecSim(void) {
PrintAndLogEx(SUCCESS, "Original Key: " _GREEN_("%s"), sprint_hex(original_key, sizeof(original_key)));
PrintAndLogEx(SUCCESS, "Weak Key: " _GREEN_("%s"), sprint_hex(key, sizeof(key)));
PrintAndLogEx(SUCCESS, "Key Updates Required to Weak Key: " _GREEN_("%d"), index);
PrintAndLogEx(SUCCESS, "Estimated Time: ~" _GREEN_("%d")" hours", index / 6545);
PrintAndLogEx(SUCCESS, "Estimated Time: ~" _GREEN_("%d")" hours", index / 7250);
}
index++;
@ -5896,7 +5896,7 @@ static command_t CommandTable[] = {
{"loclass", CmdHFiClass_loclass, AlwaysAvailable, "Use loclass to perform bruteforce reader attack"},
{"lookup", CmdHFiClassLookUp, AlwaysAvailable, "Uses authentication trace to check for key in dictionary file"},
{"legrec", CmdHFiClassLegacyRecover, IfPm3Iclass, "Recovers 24 bits of the diversified key of a legacy card provided a valid nr-mac combination"},
{"legbrute", CmdHFiClassLegRecLookUp, AlwaysAvailable, "Bruteforces 40 bits of a partial diversified key, provided 24 bits of the key and two valid nr-macs"},
{"legbrute", CmdHFiClassLegBrute, AlwaysAvailable, "Bruteforces 40 bits of a partial diversified key, provided 24 bits of the key and two valid nr-macs"},
{"unhash", CmdHFiClassUnhash, AlwaysAvailable, "Reverses a diversified key to retrieve hash0 pre-images after DES encryption"},
{"-----------", CmdHelp, IfPm3Iclass, "-------------------- " _CYAN_("Simulation") " -------------------"},
{"sim", CmdHFiClassSim, IfPm3Iclass, "Simulate iCLASS tag"},