X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/6bfa18eab4750123d0e24090597b0d4c7bd58daf..fd4f21b766a715303f0b1436c9970f5965e644dc:/client/cmdhfepa.c?ds=inline

diff --git a/client/cmdhfepa.c b/client/cmdhfepa.c
index 8f6a6af2..f9f69a88 100644
--- a/client/cmdhfepa.c
+++ b/client/cmdhfepa.c
@@ -9,7 +9,7 @@
 //-----------------------------------------------------------------------------
 
 #include "util.h"
-//#include "proxusb.h"
+
 #include "proxmark3.h"
 #include "ui.h"
 #include "cmdparser.h"
@@ -29,9 +29,9 @@ int CmdHFEPACollectPACENonces(const char *Cmd)
 	unsigned int n = 0;
 	// delay between requests
 	unsigned int d = 0;
-	
+
 	sscanf(Cmd, "%u %u %u", &m, &n, &d);
-	
+
 	// values are expected to be > 0
 	m = m > 0 ? m : 1;
 	n = n > 0 ? n : 1;
@@ -44,8 +44,8 @@ int CmdHFEPACollectPACENonces(const char *Cmd)
 		UsbCommand c = {CMD_EPA_PACE_COLLECT_NONCE, {(int)m, 0, 0}};
 		SendCommand(&c);
 		UsbCommand resp;
-    
-    WaitForResponse(CMD_ACK,&resp);
+
+		WaitForResponse(CMD_ACK,&resp);
 
 		// check if command failed
 		if (resp.arg[0] != 0) {
@@ -58,6 +58,7 @@ int CmdHFEPACollectPACENonces(const char *Cmd)
 			}
 			// print nonce
 			PrintAndLog("Length: %d, Nonce: %s", nonce_length, nonce);
+			free(nonce);
 		}
 		if (i < n - 1) {
 			sleep(d);
@@ -68,13 +69,123 @@ int CmdHFEPACollectPACENonces(const char *Cmd)
 	return 1;
 }
 
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+////////////////////////////////The commands lie below here/////////////////////////////////////////////////////////////////////////////////////////
+
+// perform the PACE protocol by replaying APDUs
+int CmdHFEPAPACEReplay(const char *Cmd)
+{
+	// the 4 APDUs which are replayed + their lengths
+	uint8_t msesa_apdu[41], gn_apdu[8], map_apdu[75];
+	uint8_t pka_apdu[75], ma_apdu[18], apdu_lengths[5] = {0};
+	// pointers to the arrays to be able to iterate
+	uint8_t *apdus[] = {msesa_apdu, gn_apdu, map_apdu, pka_apdu, ma_apdu};
+
+	// usage message
+	static const char const *usage_msg =
+		"Please specify 5 APDUs separated by spaces. "
+		"Example:\n preplay 0022C1A4 1068000000 1086000002 1234ABCDEF 1A2B3C4D";
+
+	// Proxmark response
+	UsbCommand resp;
+
+	int skip = 0, skip_add = 0, scan_return = 0;
+	// for each APDU
+	for (int i = 0; i < sizeof(apdu_lengths); i++) {
+		// scan to next space or end of string
+		while (Cmd[skip] != ' ' && Cmd[skip] != '\0') {
+			// convert
+			scan_return = sscanf(Cmd + skip, "%2X%n",
+			                     (unsigned int *) (apdus[i] + apdu_lengths[i]),
+			                     &skip_add);
+			if (scan_return < 1) {
+				PrintAndLog((char *)usage_msg);
+				PrintAndLog("Not enough APDUs! Try again!");
+				return 0;
+			}
+			skip += skip_add;
+            apdu_lengths[i]++;
+		}
+
+		// break on EOF
+		if (Cmd[skip] == '\0') {
+			if (i < sizeof(apdu_lengths) - 1) {
+
+				PrintAndLog((char *)usage_msg);
+				return 0;
+			}
+			break;
+		}
+		// skip the space
+		skip++;
+	}
+
+	// transfer the APDUs to the Proxmark
+	UsbCommand usb_cmd;
+	usb_cmd.cmd = CMD_EPA_PACE_REPLAY;
+	for (int i = 0; i < sizeof(apdu_lengths); i++) {
+		// APDU number
+		usb_cmd.arg[0] = i + 1;
+		// transfer the APDU in several parts if necessary
+		for (int j = 0; j * sizeof(usb_cmd.d.asBytes) < apdu_lengths[i]; j++) {
+			// offset into the APDU
+			usb_cmd.arg[1] = j * sizeof(usb_cmd.d.asBytes);
+			// amount of data in this packet
+			int packet_length = apdu_lengths[i] - (j * sizeof(usb_cmd.d.asBytes));
+			if (packet_length > sizeof(usb_cmd.d.asBytes)) {
+				packet_length = sizeof(usb_cmd.d.asBytes);
+			}
+			usb_cmd.arg[2] = packet_length;
+
+			memcpy(usb_cmd.d.asBytes, // + (j * sizeof(usb_cmd.d.asBytes)),
+			       apdus[i] + (j * sizeof(usb_cmd.d.asBytes)),
+			       packet_length);
+			SendCommand(&usb_cmd);
+			WaitForResponse(CMD_ACK, &resp);
+			if (resp.arg[0] != 0) {
+				PrintAndLog("Transfer of APDU #%d Part %d failed!", i, j);
+				return 0;
+			}
+		}
+	}
+
+	// now perform the replay
+	usb_cmd.arg[0] = 0;
+	SendCommand(&usb_cmd);
+	WaitForResponse(CMD_ACK, &resp);
+	if (resp.arg[0] != 0) {
+		PrintAndLog("\nPACE replay failed in step %u!", (uint32_t)resp.arg[0]);
+		PrintAndLog("Measured times:");
+		PrintAndLog("MSE Set AT: %u us", resp.d.asDwords[0]);
+		PrintAndLog("GA Get Nonce: %u us", resp.d.asDwords[1]);
+		PrintAndLog("GA Map Nonce: %u us", resp.d.asDwords[2]);
+		PrintAndLog("GA Perform Key Agreement: %u us", resp.d.asDwords[3]);
+		PrintAndLog("GA Mutual Authenticate: %u us", resp.d.asDwords[4]);
+	} else {
+		PrintAndLog("PACE replay successfull!");
+		PrintAndLog("MSE Set AT: %u us", resp.d.asDwords[0]);
+		PrintAndLog("GA Get Nonce: %u us", resp.d.asDwords[1]);
+		PrintAndLog("GA Map Nonce: %u us", resp.d.asDwords[2]);
+		PrintAndLog("GA Perform Key Agreement: %u us", resp.d.asDwords[3]);
+		PrintAndLog("GA Mutual Authenticate: %u us", resp.d.asDwords[4]);
+	}
+
+
+	return 1;
+}
+
+////////////////////////////////The new commands lie above here/////////////////////////////////////////////////////////////////////////////////////
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
 // UI-related stuff
 
-static const command_t CommandTable[] = 
+static const command_t CommandTable[] =
 {
   {"help",    CmdHelp,                   1, "This help"},
   {"cnonces", CmdHFEPACollectPACENonces, 0,
               "<m> <n> <d> Acquire n>0 encrypted PACE nonces of size m>0 with d sec pauses"},
+  {"preplay", CmdHFEPAPACEReplay,        0,
+   "<mse> <get> <map> <pka> <ma> Perform PACE protocol by replaying given APDUs"},
   {NULL, NULL, 0, NULL}
 };
 
@@ -92,4 +203,4 @@ int CmdHFEPA(const char *Cmd)
 	// parse
   CmdsParse(CommandTable, Cmd);
   return 0;
-}
\ No newline at end of file
+}