CHG: adjusted timing according to @sentinel 's traces

[proxmark3-svn] / client / cmdhflegic.c

diff --git a/client/cmdhflegic.c b/client/cmdhflegic.c
index 31d5900548c6bf01a2682c97cb2a664aabecdeaf..2cfb286ea90acac200de0eab914ccafaa8cca59c 100644 (file)
--- a/client/cmdhflegic.c
+++ b/client/cmdhflegic.c
@@ -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}
 };