if (param == 'f') {
ShowWaitCycles = true;
}
-
- uint8_t got[1920];
- GetFromBigBuf(got,sizeof(got),0);
- WaitForResponse(CMD_ACK,NULL);
+
+// 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("-----------|-----------|-----|--------");
-
- int i = 0;
- uint32_t first_timestamp = 0;
+ PrintAndLog(" Start | End | Src | Data (! denotes parity error) | CRC ");
+ PrintAndLog("-----------|-----------|-----|-----------------------------------------------------------------------");
+
+ uint16_t tracepos = 0;
+ uint16_t duration;
+ uint16_t data_len;
+ uint16_t parity_len;
+ bool isResponse;
uint32_t timestamp;
- uint32_t EndOfTransmissionTimestamp = 0;
+ uint32_t first_timestamp;
+ uint32_t EndOfTransmissionTimestamp;
for (;;) {
- if(i >= 1900) {
+
+ if(tracepos >= TRACE_SIZE) {
break;
}
- bool isResponse;
- timestamp = *((uint32_t *)(got+i));
- if (timestamp & 0x80000000) {
- timestamp &= 0x7fffffff;
+ timestamp = *((uint32_t *)(trace + tracepos));
+ if(tracepos == 0) {
+ first_timestamp = timestamp;
+ }
+
+ // Break and stick with current result if buffer was not completely full
+ if (timestamp == 0x44444444) break;
+
+ 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;
}
- if(i==0) {
- first_timestamp = timestamp;
- }
-
- int parityBits = *((uint32_t *)(got+i+4));
+ parity_len = (data_len-1)/8 + 1;
- int len = got[i+8];
-
- if (len > 100) {
- break;
- }
- if (i + len >= 1900) {
+ 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;
+
+ char line[16][110];
+ for (int j = 0; j < data_len; j++) {
+ int oddparity = 0x01;
+ int k;
+
+ for (k=0;k<8;k++) {
+ oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
+ }
- uint8_t *frame = (got+i+9);
-
- // Break and stick with current result if buffer was not completely full
- if (frame[0] == 0x44 && frame[1] == 0x44 && frame[2] == 0x44 && frame[3] == 0x44) break;
-
- char line[1000] = "";
- int j;
- if (len) {
- for (j = 0; j < len; j++) {
- int oddparity = 0x01;
- int k;
+ uint8_t parityBits = parityBytes[j>>3];
+ if (isResponse && (oddparity != ((parityBits >> (7-(j&0x0007))) & 0x01))) {
+ sprintf(line[j/16]+((j%16)*4), "%02x! ", frame[j]);
+ } else {
+ sprintf(line[j/16]+((j%16)*4), "%02x ", frame[j]);
+ }
- for (k=0;k<8;k++) {
- oddparity ^= (((frame[j] & 0xFF) >> k) & 0x01);
- }
+ }
- //if((parityBits >> (len - j - 1)) & 0x01) {
- if (isResponse && (oddparity != ((parityBits >> (len - j - 1)) & 0x01))) {
- sprintf(line+(j*4), "%02x! ", frame[j]);
- } else {
- sprintf(line+(j*4), "%02x ", frame[j]);
- }
- }
- } else {
- if (ShowWaitCycles) {
- uint32_t next_timestamp = (*((uint32_t *)(got+i+9))) & 0x7fffffff;
- sprintf(line, "fdt (Frame Delay Time): %d", (next_timestamp - timestamp));
+ char crc[5] = "";
+ 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, "");
}
}
- char *crc;
- crc = "";
- if (len > 2) {
- uint8_t b1, b2;
- for (j = 0; j < (len - 1); j++) {
- // gives problems... search for the reason..
- /*if(frame[j] == 0xAA) {
- switch(frame[j+1]) {
- case 0x01:
- crc = "[1] Two drops close after each other";
- break;
- case 0x02:
- crc = "[2] Potential SOC with a drop in second half of bitperiod";
- break;
- case 0x03:
- crc = "[3] Segment Z after segment X is not possible";
- break;
- case 0x04:
- crc = "[4] Parity bit of a fully received byte was wrong";
- break;
- default:
- crc = "[?] Unknown error";
- break;
- }
- break;
- }*/
+ EndOfTransmissionTimestamp = timestamp + duration;
+
+ int num_lines = (data_len - 1)/16 + 1;
+ for (int j = 0; j < num_lines; j++) {
+ if (j == 0) {
+ PrintAndLog(" %9d | %9d | %s | %-64s| %s",
+ (timestamp - first_timestamp),
+ (EndOfTransmissionTimestamp - first_timestamp),
+ (isResponse ? "Tag" : "Rdr"),
+ line[j],
+ (j == num_lines-1)?crc:"");
+ } else {
+ PrintAndLog(" | | | %-64s| %s",
+ line[j],
+ (j == num_lines-1)?crc:"");
}
+ }
- if (strlen(crc)==0) {
- ComputeCrc14443(CRC_14443_A, frame, len-2, &b1, &b2);
- if (b1 != frame[len-2] || b2 != frame[len-1]) {
- crc = (isResponse & (len < 6)) ? "" : " !crc";
- } else {
- 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));
}
- } else {
- crc = ""; // SHORT
}
-
- i += (len + 9);
-
- EndOfTransmissionTimestamp = (*((uint32_t *)(got+i))) & 0x7fffffff;
-
- if (!ShowWaitCycles) i += 9;
-
- PrintAndLog(" %9d | %9d | %s | %s %s",
- (timestamp - first_timestamp),
- (EndOfTransmissionTimestamp - first_timestamp),
- (len?(isResponse ? "Tag" : "Rdr"):" "),
- line, crc);
-
+
}
+
return 0;
}
iso14a_card_select_t card;
memcpy(&card, (iso14a_card_select_t *)resp.d.asBytes, sizeof(iso14a_card_select_t));
- uint64_t select_status = resp.arg[0];
+ 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");
+ // disconnect
+ c.arg[0] = 0;
+ c.arg[1] = 0;
+ c.arg[2] = 0;
+ SendCommand(&c);
return 0;
}
WaitForResponse(CMD_ACK,&resp);
memcpy(&card.ats, resp.d.asBytes, resp.arg[0]);
- card.ats_len = resp.arg[0];
+ card.ats_len = resp.arg[0]; // note: ats_len includes CRC Bytes
}
// disconnect
SendCommand(&c);
- if(card.ats_len >= 3) { // a valid ATS consists of at least the length byte TL and 2 CRC bytes
+ 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;
- if (!(card.sak & 0x02)) {
+ if (select_status == 2) {
PrintAndLog("SAK incorrectly claims that card doesn't support RATS");
}
PrintAndLog(" ATS : %s", sprint_hex(card.ats, card.ats_len));
- if (card.ats_len > 0) {
- PrintAndLog(" - TL : length is %d bytes", card.ats[0]);
+ PrintAndLog(" - TL : length is %d bytes", card.ats[0]);
+ if (card.ats[0] != card.ats_len - 2) {
+ PrintAndLog("ATS may be corrupted. Length of ATS (%d bytes incl. 2 Bytes CRC) doesn't match TL", card.ats_len);
}
- if (card.ats_len > 1) {
+
+ if (card.ats[0] > 1) { // there is a format byte (T0)
ta1 = (card.ats[1] & 0x10) == 0x10;
tb1 = (card.ats[1] & 0x20) == 0x20;
tc1 = (card.ats[1] & 0x40) == 0x40;
+ int16_t fsci = card.ats[1] & 0x0f;
PrintAndLog(" - T0 : TA1 is%s present, TB1 is%s present, "
- "TC1 is%s present, FSCI is %d",
+ "TC1 is%s present, FSCI is %d (FSC = %ld)",
(ta1 ? "" : " NOT"), (tb1 ? "" : " NOT"), (tc1 ? "" : " NOT"),
- (card.ats[1] & 0x0f));
+ fsci,
+ fsci < 5 ? (fsci - 2) * 8 :
+ fsci < 8 ? (fsci - 3) * 32 :
+ fsci == 8 ? 256 :
+ -1
+ );
}
pos = 2;
- if (ta1 && card.ats_len > pos) {
+ if (ta1) {
char dr[16], ds[16];
dr[0] = ds[0] = '\0';
if (card.ats[pos] & 0x10) strcat(ds, "2, ");
(card.ats[pos] & 0x80 ? " NOT" : ""), dr, ds);
pos++;
}
- if (tb1 && card.ats_len > pos) {
- PrintAndLog(" - TB1 : SFGI = %d, FWI = %d",
- (card.ats[pos] & 0x08),
- (card.ats[pos] & 0x80) >> 4);
+ if (tb1) {
+ uint32_t sfgi = card.ats[pos] & 0x0F;
+ uint32_t fwi = card.ats[pos] >> 4;
+ PrintAndLog(" - TB1 : SFGI = %d (SFGT = %s%ld/fc), FWI = %d (FWT = %ld/fc)",
+ (sfgi),
+ sfgi ? "" : "(not needed) ",
+ sfgi ? (1 << 12) << sfgi : 0,
+ fwi,
+ (1 << 12) << fwi
+ );
pos++;
}
- if (tc1 && card.ats_len > pos) {
+ if (tc1) {
PrintAndLog(" - TC1 : NAD is%s supported, CID is%s supported",
(card.ats[pos] & 0x01) ? "" : " NOT",
(card.ats[pos] & 0x02) ? "" : " NOT");
pos++;
}
- if (card.ats_len > pos) {
+ if (card.ats[0] > pos) {
char *tip = "";
- if (card.ats_len - pos > 7) {
+ if (card.ats[0] - pos >= 7) {
if (memcmp(card.ats + pos, "\xC1\x05\x2F\x2F\x01\xBC\xD6", 7) == 0) {
tip = "-> MIFARE Plus X 2K or 4K";
} else if (memcmp(card.ats + pos, "\xC1\x05\x2F\x2F\x00\x35\xC7", 7) == 0) {
tip = "-> MIFARE Plus S 2K or 4K";
}
}
- PrintAndLog(" - HB : %s%s", sprint_hex(card.ats + pos, card.ats_len - pos - 2), tip);
+ PrintAndLog(" - HB : %s%s", sprint_hex(card.ats + pos, card.ats[0] - pos), tip);
if (card.ats[pos] == 0xC1) {
PrintAndLog(" c1 -> Mifare or (multiple) virtual cards of various type");
PrintAndLog(" %02x -> Length is %d bytes",
projects / proxmark3-svn / blobdiff