X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/6a1f2d82bb7d33cd49f9c191f36144ca10d5b629..b7eddc14db9262a51ad3100ade7386d03500ace8:/client/cmdhf14a.c?ds=sidebyside

diff --git a/client/cmdhf14a.c b/client/cmdhf14a.c
index 5d1c4853..9a761864 100644
--- a/client/cmdhf14a.c
+++ b/client/cmdhf14a.c
@@ -23,147 +23,111 @@
 #include "common.h"
 #include "cmdmain.h"
 #include "mifare.h"
+#include "cmdhfmfu.h"
 
 static int CmdHelp(const char *Cmd);
 static void waitCmd(uint8_t iLen);
 
-int CmdHF14AList(const char *Cmd)
-{
-	bool ShowWaitCycles = false;
-	char param = param_getchar(Cmd, 0);
-	
-	if (param == 'h' || (param != 0 && param != 'f')) {
-		PrintAndLog("List data in trace buffer.");
-		PrintAndLog("Usage:  hf 14a list [f]");
-		PrintAndLog("f - show frame delay times as well");
-		PrintAndLog("sample: hf 14a list f");
-		return 0;
-	}	
-
-	if (param == 'f') {
-		ShowWaitCycles = true;
-	}
-
-// for the time being. Need better Bigbuf handling.	
-#define TRACE_SIZE 3000	
-
-	uint8_t trace[TRACE_SIZE];
-	GetFromBigBuf(trace, TRACE_SIZE, 0);
-	WaitForResponse(CMD_ACK, NULL);
-
-	PrintAndLog("Recorded Activity");
-	PrintAndLog("");
-	PrintAndLog("Start = Start of Start Bit, End = End of last modulation. Src = Source of Transfer");
-	PrintAndLog("All times are in carrier periods (1/13.56Mhz)");
-	PrintAndLog("");
-	PrintAndLog("     Start |       End | Src | Data");
-	PrintAndLog("-----------|-----------|-----|--------");
-
-	uint16_t tracepos = 0;
-	uint16_t duration;
-	uint16_t data_len;
-	uint16_t parity_len;
-	bool isResponse;
-	uint32_t timestamp;
-	uint32_t first_timestamp;
-	uint32_t EndOfTransmissionTimestamp;
-	
-	for (;;) {
-
-		if(tracepos >= TRACE_SIZE) {
-			break;
-		}
-
-		timestamp = *((uint32_t *)(trace + tracepos));
-		if(tracepos == 0) {
-			first_timestamp = timestamp;
-		}
-		tracepos += 4;
-		duration = *((uint16_t *)(trace + tracepos));
-		tracepos += 2;
-		data_len = *((uint16_t *)(trace + tracepos));
-		tracepos += 2;
-		
-		if (data_len & 0x8000) {
-		  data_len &= 0x7fff;
-		  isResponse = true;
-		} else {
-		  isResponse = false;
-		}
-
-		parity_len = (data_len-1)/8 + 1;
-
-		if (tracepos + data_len + parity_len >= TRACE_SIZE) {
-			break;
-		}
-		
-		uint8_t *frame = trace + tracepos;
-		tracepos += data_len;
-		uint8_t *parityBytes = trace + tracepos;
-		tracepos += parity_len;
-
-		// Break and stick with current result if buffer was not completely full
-		if (timestamp == 0x44444444) break; 
-
-		char line[1000] = "";
-		int j;
-		for (j = 0; j < data_len; j++) {
-			int oddparity = 0x01;
-			int k;
-
-			for (k=0;k<8;k++) {
-				oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
-			}
+// structure and database for uid -> tagtype lookups 
+typedef struct { 
+	uint8_t uid;
+	char* desc;
+} manufactureName; 
+
+const manufactureName manufactureMapping[] = {
+	// ID,  "Vendor Country"
+	{ 0x01, "Motorola UK" },
+	{ 0x02, "ST Microelectronics SA France" },
+	{ 0x03, "Hitachi, Ltd Japan" }, 
+	{ 0x04, "NXP Semiconductors Germany" }, 
+	{ 0x05, "Infineon Technologies AG Germany" }, 
+	{ 0x06, "Cylink USA" }, 
+	{ 0x07, "Texas Instrument France" },
+	{ 0x08, "Fujitsu Limited Japan" }, 
+	{ 0x09, "Matsushita Electronics Corporation, Semiconductor Company Japan" }, 
+	{ 0x0A, "NEC Japan" }, 
+	{ 0x0B, "Oki Electric Industry Co. Ltd Japan" },
+	{ 0x0C, "Toshiba Corp. Japan" },
+	{ 0x0D, "Mitsubishi Electric Corp. Japan" },
+	{ 0x0E, "Samsung Electronics Co. Ltd Korea" },
+	{ 0x0F, "Hynix / Hyundai, Korea" },
+	{ 0x10, "LG-Semiconductors Co. Ltd Korea" },
+	{ 0x11, "Emosyn-EM Microelectronics USA" },
+	{ 0x12, "INSIDE Technology France" },
+	{ 0x13, "ORGA Kartensysteme GmbH Germany" },
+	{ 0x14, "SHARP Corporation Japan" },
+	{ 0x15, "ATMEL France" },
+	{ 0x16, "EM Microelectronic-Marin SA Switzerland" },
+	{ 0x17, "KSW Microtec GmbH Germany" },
+	{ 0x18, "ZMD AG Germany" },
+	{ 0x19, "XICOR, Inc. USA" },
+	{ 0x1A, "Sony Corporation Japan Identifier Company Country" },
+	{ 0x1B, "Malaysia Microelectronic Solutions Sdn. Bhd Malaysia" },
+	{ 0x1C, "Emosyn USA" },
+	{ 0x1D, "Shanghai Fudan Microelectronics Co. Ltd. P.R. China" },
+	{ 0x1E, "Magellan Technology Pty Limited Australia" },
+	{ 0x1F, "Melexis NV BO Switzerland" },
+	{ 0x20, "Renesas Technology Corp. Japan" },
+	{ 0x21, "TAGSYS France" },
+	{ 0x22, "Transcore USA" },
+	{ 0x23, "Shanghai belling corp., ltd. China" },
+	{ 0x24, "Masktech Germany Gmbh Germany" },
+	{ 0x25, "Innovision Research and Technology Plc UK" },
+	{ 0x26, "Hitachi ULSI Systems Co., Ltd. Japan" },
+	{ 0x27, "Cypak AB Sweden" },
+	{ 0x28, "Ricoh Japan" },
+	{ 0x29, "ASK France" },
+	{ 0x2A, "Unicore Microsystems, LLC Russian Federation" },
+	{ 0x2B, "Dallas Semiconductor/Maxim USA" },
+	{ 0x2C, "Impinj, Inc. USA" },
+	{ 0x2D, "RightPlug Alliance USA" },
+	{ 0x2E, "Broadcom Corporation USA" },
+	{ 0x2F, "MStar Semiconductor, Inc Taiwan, ROC" },
+	{ 0x30, "BeeDar Technology Inc. USA" },
+	{ 0x31, "RFIDsec Denmark" },
+	{ 0x32, "Schweizer Electronic AG Germany" },
+	{ 0x33, "AMIC Technology Corp Taiwan" }, 
+	{ 0x34, "Mikron JSC Russia" },
+	{ 0x35, "Fraunhofer Institute for Photonic Microsystems Germany" },
+	{ 0x36, "IDS Microchip AG Switzerland" },
+	{ 0x37, "Kovio USA" },
+	{ 0x38, "HMT Microelectronic Ltd Switzerland Identifier Company Country" },
+	{ 0x39, "Silicon Craft Technology Thailand" },
+	{ 0x3A, "Advanced Film Device Inc. Japan" },
+	{ 0x3B, "Nitecrest Ltd UK" },
+	{ 0x3C, "Verayo Inc. USA" },
+	{ 0x3D, "HID Global USA" },
+	{ 0x3E, "Productivity Engineering Gmbh Germany" },
+	{ 0x3F, "Austriamicrosystems AG (reserved) Austria" }, 
+	{ 0x40, "Gemalto SA France" },
+	{ 0x41, "Renesas Electronics Corporation Japan" },
+	{ 0x42, "3Alogics Inc Korea" },
+	{ 0x43, "Top TroniQ Asia Limited Hong Kong" },
+	{ 0x44, "Gentag Inc (USA) USA" },
+	{ 0x00, "no tag-info available" } // must be the last entry
+};
 
-			uint8_t parityBits = parityBytes[j>>3];
-			if (isResponse && (oddparity != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
-				sprintf(line+(j*4), "%02x!  ", frame[j]);
-			} else {
-				sprintf(line+(j*4), "%02x   ", frame[j]);
-			}
-		}
 
-		char crc[6] = ""; 
-		if (data_len > 2) {
-		uint8_t b1, b2;
-			ComputeCrc14443(CRC_14443_A, frame, data_len-2, &b1, &b2);
-			if (b1 != frame[data_len-2] || b2 != frame[data_len-1]) {
-				sprintf(crc, (isResponse & (data_len < 6)) ? "" : " !crc");
-			} else {
-				sprintf(crc, "");
-			}
-		}
+// get a product description based on the UID
+//		uid[8] 	tag uid
+// returns description of the best match	
+char* getTagInfo(uint8_t uid) {
 
-		EndOfTransmissionTimestamp = timestamp + duration;
-		
-		PrintAndLog(" %9d | %9d | %s | %s %s",
-			(timestamp - first_timestamp),
-			(EndOfTransmissionTimestamp - first_timestamp),
-			(isResponse ? "Tag" : "Rdr"),
-			line, 
-			crc);
-
-		bool next_isResponse = *((uint16_t *)(trace + tracepos + 6)) & 0x8000;
-		
-		if (ShowWaitCycles && !isResponse && next_isResponse) {
-			uint32_t next_timestamp = *((uint32_t *)(trace + tracepos));
-			if (next_timestamp != 0x44444444) {
-				PrintAndLog(" %9d | %9d | %s | fdt (Frame Delay Time): %d",
-					(EndOfTransmissionTimestamp - first_timestamp),
-					(next_timestamp - first_timestamp),
-					"   ",
-					(next_timestamp - EndOfTransmissionTimestamp));
-			}
-		}
-			
-	}
+	int i;
+	int len = sizeof(manufactureMapping) / sizeof(manufactureName);
 	
-	return 0;
+	for ( i = 0; i < len; ++i ) 
+		if ( uid == manufactureMapping[i].uid) 
+			return manufactureMapping[i].desc;
+
+	//No match, return default
+	return manufactureMapping[len-1].desc; 
 }
 
-void iso14a_set_timeout(uint32_t timeout) {
-	UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_SET_TIMEOUT, 0, timeout}};
-	SendCommand(&c);
+int CmdHF14AList(const char *Cmd)
+{
+	PrintAndLog("Deprecated command, use 'hf list 14a' instead");
+	return 0;
 }
 
 int CmdHF14AReader(const char *Cmd)
@@ -180,16 +144,89 @@ int CmdHF14AReader(const char *Cmd)
 	uint64_t select_status = resp.arg[0];		// 0: couldn't read, 1: OK, with ATS, 2: OK, no ATS
 	
 	if(select_status == 0) {
-		PrintAndLog("iso14443a card select failed");
+		if (Cmd[0] != 's') PrintAndLog("iso14443a card select failed");
+		// disconnect
+		c.arg[0] = 0;
+		c.arg[1] = 0;
+		c.arg[2] = 0;
+		SendCommand(&c);
+		return 0;
+	}
+
+	if(select_status == 3) {
+		PrintAndLog("Card doesn't support standard iso14443-3 anticollision");
+		PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
+		// disconnect
+		c.arg[0] = 0;
+		c.arg[1] = 0;
+		c.arg[2] = 0;
+		SendCommand(&c);
 		return 0;
 	}
 
-	PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
 	PrintAndLog(" UID : %s", sprint_hex(card.uid, card.uidlen));
+	PrintAndLog("ATQA : %02x %02x", card.atqa[1], card.atqa[0]);
 	PrintAndLog(" SAK : %02x [%d]", card.sak, resp.arg[0]);
 
 	switch (card.sak) {
-		case 0x00: PrintAndLog("TYPE : NXP MIFARE Ultralight | Ultralight C"); break;
+		case 0x00: 
+
+			//***************************************test****************
+			// disconnect
+			c.arg[0] = 0;
+			c.arg[1] = 0;
+			c.arg[2] = 0;
+			SendCommand(&c);
+			
+			uint32_t tagT = GetHF14AMfU_Type();
+			ul_print_type(tagT, 0);
+
+			//reconnect for further tests
+			c.arg[0] = ISO14A_CONNECT | ISO14A_NO_DISCONNECT;
+			c.arg[1] = 0;
+			c.arg[2] = 0;
+
+			SendCommand(&c);
+
+			UsbCommand resp;
+			WaitForResponse(CMD_ACK,&resp);
+			
+			memcpy(&card, (iso14a_card_select_t *)resp.d.asBytes, sizeof(iso14a_card_select_t));
+
+			select_status = resp.arg[0];		// 0: couldn't read, 1: OK, with ATS, 2: OK, no ATS
+			
+			if(select_status == 0) {
+				//PrintAndLog("iso14443a card select failed");
+				// disconnect
+				c.arg[0] = 0;
+				c.arg[1] = 0;
+				c.arg[2] = 0;
+				SendCommand(&c);
+				return 0;
+			}
+
+			/*  orig
+			// check if the tag answers to GETVERSION (0x60)
+			c.arg[0] = ISO14A_RAW | ISO14A_APPEND_CRC | ISO14A_NO_DISCONNECT;
+			c.arg[1] = 1;
+			c.arg[2] = 0;
+			c.d.asBytes[0] = 0x60;
+			SendCommand(&c);
+			WaitForResponse(CMD_ACK,&resp);
+
+			uint8_t version[10] = {0};
+			memcpy(version, resp.d.asBytes, resp.arg[0] < sizeof(version) ? resp.arg[0] : sizeof(version));
+			uint8_t len = resp.arg[0] & 0xff;
+			switch ( len ){
+				// todo, identify "Magic UL-C tags". // they usually have a static nonce response to 0x1A command.
+				// UL-EV1, size, check version[6] == 0x0b (smaller)  0x0b * 4 == 48
+				case 0x0A:PrintAndLog("TYPE : NXP MIFARE Ultralight EV1 %d bytes", (version[6] == 0xB) ? 48 : 128);break;
+				case 0x01:PrintAndLog("TYPE : NXP MIFARE Ultralight C");break;
+				case 0x00:PrintAndLog("TYPE : NXP MIFARE Ultralight");break;	
+			}
+			*/
+			break;
+		case 0x01: PrintAndLog("TYPE : NXP TNP3xxx Activision Game Appliance"); break;
 		case 0x04: PrintAndLog("TYPE : NXP MIFARE (various !DESFire !DESFire EV1)"); break;
 		case 0x08: PrintAndLog("TYPE : NXP MIFARE CLASSIC 1k | Plus 2k SL1"); break;
 		case 0x09: PrintAndLog("TYPE : NXP MIFARE Mini 0.3k"); break;
@@ -205,7 +242,12 @@ int CmdHF14AReader(const char *Cmd)
 		default: ;
 	}
 
-	
+	// Double & triple sized UID, can be mapped to a manufacturer.
+	// HACK: does this apply for Ultralight cards?
+	if ( card.uidlen > 4 ) {
+		PrintAndLog("MANUFACTURER : %s", getTagInfo(card.uid[0]));
+	}
+
 	// try to request ATS even if tag claims not to support it
 	if (select_status == 2) {
 		uint8_t rats[] = { 0xE0, 0x80 }; // FSDI=8 (FSD=256), CID=0
@@ -216,17 +258,10 @@ int CmdHF14AReader(const char *Cmd)
 		SendCommand(&c);
 		WaitForResponse(CMD_ACK,&resp);
 		
-	    memcpy(&card.ats, resp.d.asBytes, resp.arg[0]);
+	    memcpy(card.ats, resp.d.asBytes, resp.arg[0]);
 		card.ats_len = resp.arg[0];				// note: ats_len includes CRC Bytes
 	} 
 
-	// disconnect
-	c.arg[0] = 0;
-	c.arg[1] = 0;
-	c.arg[2] = 0;
-	SendCommand(&c);
-
-	
 	if(card.ats_len >= 3) {			// a valid ATS consists of at least the length byte (TL) and 2 CRC bytes
 		bool ta1 = 0, tb1 = 0, tc1 = 0;
 		int pos;
@@ -365,6 +400,24 @@ int CmdHF14AReader(const char *Cmd)
 		PrintAndLog("proprietary non iso14443-4 card found, RATS not supported");
 	}
 
+	
+	// try to see if card responses to "chinese magic backdoor" commands.
+	c.cmd = CMD_MIFARE_CIDENT;
+	c.arg[0] = 0;
+	c.arg[1] = 0;
+	c.arg[2] = 0;	
+	SendCommand(&c);
+	WaitForResponse(CMD_ACK,&resp);
+	uint8_t isOK  = resp.arg[0] & 0xff;
+	PrintAndLog("Answers to chinese magic backdoor commands: %s", (isOK ? "YES" : "NO") );
+	
+	// disconnect
+	c.cmd = CMD_READER_ISO_14443a;
+	c.arg[0] = 0;
+	c.arg[1] = 0;
+	c.arg[2] = 0;
+	SendCommand(&c);
+
 	return select_status;
 }
 
@@ -422,8 +475,9 @@ int CmdHF14ASim(const char *Cmd)
 		PrintAndLog("   syntax: hf 14a sim <type> <uid>");
 		PrintAndLog("    types: 1 = MIFARE Classic");
 		PrintAndLog("           2 = MIFARE Ultralight");
-		PrintAndLog("           3 = MIFARE DESFIRE");
+		PrintAndLog("           3 = MIFARE Desfire");
 		PrintAndLog("           4 = ISO/IEC 14443-4");
+		PrintAndLog("           5 = MIFARE Tnp3xxx");		
 		PrintAndLog("");
 		return 1;
 	}
@@ -451,10 +505,6 @@ int CmdHF14ASim(const char *Cmd)
 		// At lease save the mandatory first part of the UID
 		c.arg[0] = long_uid & 0xffffffff;
 
-	
-	// At lease save the mandatory first part of the UID
-	c.arg[0] = long_uid & 0xffffffff;
-	
 	if (c.arg[1] == 0) {
 		PrintAndLog("Emulating ISO/IEC 14443 type A tag with UID %01d %08x %08x",c.arg[0],c.arg[1],c.arg[2]);
 	}
@@ -493,9 +543,10 @@ int CmdHF14ASim(const char *Cmd)
 int CmdHF14ASnoop(const char *Cmd) {
 	int param = 0;
 	
-	if (param_getchar(Cmd, 0) == 'h') {
+	uint8_t ctmp = param_getchar(Cmd, 0) ;
+	if (ctmp == 'h' || ctmp == 'H') {
 		PrintAndLog("It get data from the field and saves it into command buffer.");
-		PrintAndLog("Buffer accessible from command hf 14a list.");
+		PrintAndLog("Buffer accessible from command hf list 14a.");
 		PrintAndLog("Usage:  hf 14a snoop [c][r]");
 		PrintAndLog("c - triggered by first data from card");
 		PrintAndLog("r - triggered by first 7-bit request from reader (REQ,WUP,...)");
@@ -504,7 +555,7 @@ int CmdHF14ASnoop(const char *Cmd) {
 	}	
 	
 	for (int i = 0; i < 2; i++) {
-		char ctmp = param_getchar(Cmd, i);
+		ctmp = param_getchar(Cmd, i);
 		if (ctmp == 'c' || ctmp == 'C') param |= 0x01;
 		if (ctmp == 'r' || ctmp == 'R') param |= 0x02;
 	}
@@ -522,19 +573,23 @@ int CmdHF14ACmdRaw(const char *cmd) {
     uint8_t active=0;
     uint8_t active_select=0;
     uint16_t numbits=0;
+	uint32_t timeout=0;
+	uint8_t bTimeout=0;
     char buf[5]="";
     int i=0;
-    uint8_t data[100];
-    unsigned int datalen=0, temp;
+    uint8_t data[USB_CMD_DATA_SIZE];
+	uint16_t datalen=0;
+	uint32_t temp;
 
     if (strlen(cmd)<2) {
-        PrintAndLog("Usage: hf 14a raw [-r] [-c] [-p] [-f] [-b] <number of bits> <0A 0B 0C ... hex>");
+        PrintAndLog("Usage: hf 14a raw [-r] [-c] [-p] [-f] [-b] [-t] <number of bits> <0A 0B 0C ... hex>");
         PrintAndLog("       -r    do not read response");
         PrintAndLog("       -c    calculate and append CRC");
         PrintAndLog("       -p    leave the signal field ON after receive");
         PrintAndLog("       -a    active signal field ON without select");
         PrintAndLog("       -s    active signal field ON with select");
         PrintAndLog("       -b    number of bits to send. Useful for send partial byte");
+		PrintAndLog("       -t    timeout in ms");
         return 0;
     }
 
@@ -567,6 +622,14 @@ int CmdHF14ACmdRaw(const char *cmd) {
                     while(cmd[i]!=' ' && cmd[i]!='\0') { i++; }
                     i-=2;
                     break;
+				case 't':
+					bTimeout=1;
+					sscanf(cmd+i+2,"%d",&temp);
+					timeout = temp;
+					i+=3;
+					while(cmd[i]!=' ' && cmd[i]!='\0') { i++; }
+					i-=2;
+					break;
                 default:
                     PrintAndLog("Invalid option");
                     return 0;
@@ -584,15 +647,19 @@ int CmdHF14ACmdRaw(const char *cmd) {
             if (strlen(buf)>=2) {
                 sscanf(buf,"%x",&temp);
                 data[datalen]=(uint8_t)(temp & 0xff);
-                datalen++;
                 *buf=0;
+				if (++datalen>sizeof(data)){
+					if (crc)
+						PrintAndLog("Buffer is full, we can't add CRC to your data");
+					break;
+				}
             }
             continue;
         }
         PrintAndLog("Invalid char on input");
         return 0;
     }
-    if(crc && datalen>0)
+    if(crc && datalen>0 && datalen<sizeof(data)-2)
     {
         uint8_t first, second;
         ComputeCrc14443(CRC_14443_A, data, datalen, &first, &second);
@@ -606,13 +673,23 @@ int CmdHF14ACmdRaw(const char *cmd) {
         if(active)
             c.arg[0] |= ISO14A_NO_SELECT;
     }
+
+	if(bTimeout){
+	    #define MAX_TIMEOUT 40542464 	// (2^32-1) * (8*16) / 13560000Hz * 1000ms/s = 
+        c.arg[0] |= ISO14A_SET_TIMEOUT;
+        if(timeout > MAX_TIMEOUT) {
+            timeout = MAX_TIMEOUT;
+            PrintAndLog("Set timeout to 40542 seconds (11.26 hours). The max we can wait for response");
+        }
+		c.arg[2] = 13560000 / 1000 / (8*16) * timeout; // timeout in ETUs (time to transfer 1 bit, approx. 9.4 us)
+	}
     if(power)
         c.arg[0] |= ISO14A_NO_DISCONNECT;
     if(datalen>0)
         c.arg[0] |= ISO14A_RAW;
 
-    c.arg[1] = datalen;
-    c.arg[2] = numbits;
+	// Max buffer is USB_CMD_DATA_SIZE
+    c.arg[1] = (datalen & 0xFFFF) | (numbits << 16);
     memcpy(c.d.asBytes,data,datalen);
 
     SendCommand(&c);
@@ -632,7 +709,7 @@ static void waitCmd(uint8_t iSelect)
     UsbCommand resp;
     char *hexout;
 
-    if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {
+    if (WaitForResponseTimeout(CMD_ACK,&resp,1500)) {
         recv = resp.d.asBytes;
         uint8_t iLen = iSelect ? resp.arg[1] : resp.arg[0];
         PrintAndLog("received %i octets",iLen);
@@ -656,10 +733,10 @@ static void waitCmd(uint8_t iSelect)
 static command_t CommandTable[] = 
 {
   {"help",   CmdHelp,              1, "This help"},
-  {"list",   CmdHF14AList,         0, "List ISO 14443a history"},
+  {"list",   CmdHF14AList,         0, "[Deprecated] List ISO 14443a history"},
   {"reader", CmdHF14AReader,       0, "Act like an ISO14443 Type A reader"},
   {"cuids",  CmdHF14ACUIDs,        0, "<n> Collect n>0 ISO14443 Type A UIDs in one go"},
-  {"sim",    CmdHF14ASim,          0, "<UID> -- Fake ISO 14443a tag"},
+  {"sim",    CmdHF14ASim,          0, "<UID> -- Simulate ISO 14443a tag"},
   {"snoop",  CmdHF14ASnoop,        0, "Eavesdrop ISO 14443 Type A"},
   {"raw",    CmdHF14ACmdRaw,       0, "Send raw hex data to tag"},
   {NULL, NULL, 0, NULL}