github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-21 13:53:55 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

CHG: adjusted timing according to @sentinel 's traces

Browse source
This commit is contained in:
iceman1001 2016-09-14 16:18:04 +02:00
commit 87342aadbc
3 changed files with 99 additions and 55 deletions
Download patch file Download diff file Expand all files Collapse all files

52
client/cmdhflegic.c
View file

@ -418,11 +418,14 @@ int CmdLegicRFRead(const char *Cmd) {
if (WaitForResponseTimeout(CMD_ACK, &resp, 2000)) {
uint8_t isOK = resp.arg[0] & 0xFF;
uint16_t len = resp.arg[1] & 0x3FF;
if ( isOK ) {
PrintAndLog("use 'hf legic decode' or");
PrintAndLog("'data hexsamples %d' to view results", len);
}
if ( isOK ) {
PrintAndLog("use 'hf legic decode'");
}
uint8_t *data = resp.d.asBytes;
PrintAndLog("\nData |");
PrintAndLog("-----------------------------");
PrintAndLog(" %s|\n", sprint_hex(data, len));
// }
} else {
PrintAndLog("command execution time out");
return 1;
@ -685,6 +688,37 @@ int CmdLegicRfFill(const char *Cmd) {
return 0;
}
void static calc4(uint8_t *cmd, uint8_t len){
crc_t crc;
//crc_init_ref(&crc, 4, 0x19 >> 1, 0x5, 0, TRUE, TRUE);
crc_init(&crc, 4, 0x19 >> 1, 0x5, 0);
crc_clear(&crc);
crc_update(&crc, 1, 1); /* CMD_READ */
crc_update(&crc, cmd[0], 8);
crc_update(&crc, cmd[1], 8);
printf("crc4 %X\n", reflect(crc_finish(&crc), 4) ) ;
crc_clear(&crc);
crc_update(&crc, 1, 1); /* CMD_READ */
crc_update(&crc, cmd[0], 8);
crc_update(&crc, cmd[1], 8);
printf("crc4 %X\n", crc_finish(&crc), 4 ) ;
printf("---- old ---\n");
crc_update2(&crc, 1, 1); /* CMD_READ */
crc_update2(&crc, cmd[0], 8);
crc_update2(&crc, cmd[1], 8);
printf("crc4 %X \n", reflect(crc_finish(&crc), 4) ) ;
crc_clear(&crc);
crc_update2(&crc, 1, 1); /* CMD_READ */
crc_update2(&crc, cmd[0], 8);
crc_update2(&crc, cmd[1], 8);
printf("crc4 %X\n", crc_finish(&crc), 4 ) ;
}
int CmdLegicCalcCrc8(const char *Cmd){
uint8_t *data = NULL;
@ -760,10 +794,13 @@ int CmdLegicCalcCrc8(const char *Cmd){
switch (type){
case 16:
PrintAndLog("LEGIC CRC16: %X", CRC16Legic(data, len, uidcrc));
PrintAndLog("Legic crc16: %X", CRC16Legic(data, len, uidcrc));
break;
case 4:
calc4(data, 0);
break;
default:
PrintAndLog("LEGIC CRC8: %X", CRC8Legic(data, len) );
PrintAndLog("Legic crc8: %X", CRC8Legic(data, len) );
break;
}
@ -782,6 +819,7 @@ static command_t CommandTable[] = {
{"writeraw",CmdLegicRfRawWrite, 0, "<address> <value> <iv> -- Write direct to address"},
{"fill", CmdLegicRfFill, 0, "<offset> <length> <value> -- Fill/Write tag with constant value"},
{"crc8", CmdLegicCalcCrc8, 1, "Calculate Legic CRC8 over given hexbytes"},
{"info", CmdLegicCalcCrc8, 1, "Information"},
{NULL, NULL, 0, NULL}
};