+ switch(cmd[0]) {
+ case TOPAZ_REQA :snprintf(exp, size, "REQA");break;
+ case TOPAZ_WUPA :snprintf(exp, size, "WUPA");break;
+ case TOPAZ_RID :snprintf(exp, size, "RID");break;
+ case TOPAZ_RALL :snprintf(exp, size, "RALL");break;
+ case TOPAZ_READ :snprintf(exp, size, "READ");break;
+ case TOPAZ_WRITE_E :snprintf(exp, size, "WRITE-E");break;
+ case TOPAZ_WRITE_NE :snprintf(exp, size, "WRITE-NE");break;
+ case TOPAZ_RSEG :snprintf(exp, size, "RSEG");break;
+ case TOPAZ_READ8 :snprintf(exp, size, "READ8");break;
+ case TOPAZ_WRITE_E8 :snprintf(exp, size, "WRITE-E8");break;
+ case TOPAZ_WRITE_NE8 :snprintf(exp, size, "WRITE-NE8");break;
+ default: snprintf(exp,size,"?"); break;
+ }
+}
+
+
+/**
+06 00 = INITIATE
+0E xx = SELECT ID (xx = Chip-ID)
+0B = Get UID
+08 yy = Read Block (yy = block number)
+09 yy dd dd dd dd = Write Block (yy = block number; dd dd dd dd = data to be written)
+0C = Reset to Inventory
+0F = Completion
+0A 11 22 33 44 55 66 = Authenticate (11 22 33 44 55 66 = data to authenticate)
+**/
+
+void annotateIso14443b(char *exp, size_t size, uint8_t* cmd, uint8_t cmdsize)
+{
+ switch(cmd[0]){
+ case ISO14443B_REQB : snprintf(exp,size,"REQB");break;
+ case ISO14443B_ATTRIB : snprintf(exp,size,"ATTRIB");break;
+ case ISO14443B_HALT : snprintf(exp,size,"HALT");break;
+ case ISO14443B_INITIATE : snprintf(exp,size,"INITIATE");break;
+ case ISO14443B_SELECT : snprintf(exp,size,"SELECT(%d)",cmd[1]);break;
+ case ISO14443B_GET_UID : snprintf(exp,size,"GET UID");break;
+ case ISO14443B_READ_BLK : snprintf(exp,size,"READ_BLK(%d)", cmd[1]);break;
+ case ISO14443B_WRITE_BLK : snprintf(exp,size,"WRITE_BLK(%d)",cmd[1]);break;
+ case ISO14443B_RESET : snprintf(exp,size,"RESET");break;
+ case ISO14443B_COMPLETION : snprintf(exp,size,"COMPLETION");break;
+ case ISO14443B_AUTHENTICATE : snprintf(exp,size,"AUTHENTICATE");break;
+ default : snprintf(exp,size ,"?");break;
+ }
+
+}
+
+/**
+ * @brief iso14443A_CRC_check Checks CRC in command or response
+ * @param isResponse
+ * @param data
+ * @param len
+ * @return 0 : CRC-command, CRC not ok
+ * 1 : CRC-command, CRC ok
+ * 2 : Not crc-command
+ */
+
+uint8_t iso14443A_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
+{
+ uint8_t b1,b2;
+
+ if(len <= 2) return 2;
+
+ if(isResponse & (len < 6)) return 2;
+
+ ComputeCrc14443(CRC_14443_A, data, len-2, &b1, &b2);
+ if (b1 != data[len-2] || b2 != data[len-1]) {
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
+
+/**
+ * @brief iso14443B_CRC_check Checks CRC in command or response
+ * @param isResponse
+ * @param data
+ * @param len
+ * @return 0 : CRC-command, CRC not ok
+ * 1 : CRC-command, CRC ok
+ * 2 : Not crc-command
+ */
+
+uint8_t iso14443B_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
+{
+ uint8_t b1,b2;
+
+ if(len <= 2) return 2;
+
+ ComputeCrc14443(CRC_14443_B, data, len-2, &b1, &b2);
+ if(b1 != data[len-2] || b2 != data[len-1]) {
+ return 0;
+ } else {
+ return 1;
+ }
+}
+
+/**
+ * @brief iclass_CRC_Ok Checks CRC in command or response
+ * @param isResponse
+ * @param data
+ * @param len
+ * @return 0 : CRC-command, CRC not ok
+ * 1 : CRC-command, CRC ok
+ * 2 : Not crc-command
+ */
+uint8_t iclass_CRC_check(bool isResponse, uint8_t* data, uint8_t len)
+{
+ if(len < 4) return 2;//CRC commands (and responses) are all at least 4 bytes
+
+ uint8_t b1, b2;
+
+ if(!isResponse)//Commands to tag
+ {
+ /**
+ These commands should have CRC. Total length leftmost
+ 4 READ
+ 4 READ4
+ 12 UPDATE - unsecured, ends with CRC16
+ 14 UPDATE - secured, ends with signature instead
+ 4 PAGESEL
+ **/
+ if(len == 4 || len == 12)//Covers three of them
+ {
+ //Don't include the command byte
+ ComputeCrc14443(CRC_ICLASS, (data+1), len-3, &b1, &b2);
+ return b1 == data[len -2] && b2 == data[len-1];
+ }
+ return 2;
+ }else{
+ /**
+ These tag responses should have CRC. Total length leftmost
+
+ 10 READ data[8] crc[2]
+ 34 READ4 data[32]crc[2]
+ 10 UPDATE data[8] crc[2]
+ 10 SELECT csn[8] crc[2]
+ 10 IDENTIFY asnb[8] crc[2]
+ 10 PAGESEL block1[8] crc[2]
+ 10 DETECT csn[8] crc[2]
+
+ These should not
+
+ 4 CHECK chip_response[4]
+ 8 READCHECK data[8]
+ 1 ACTALL sof[1]
+ 1 ACT sof[1]
+
+ In conclusion, without looking at the command; any response
+ of length 10 or 34 should have CRC
+ **/
+ if(len != 10 && len != 34) return true;
+
+ ComputeCrc14443(CRC_ICLASS, data, len-2, &b1, &b2);
+ return b1 == data[len -2] && b2 == data[len-1];
+ }
+}
+
+
+bool is_last_record(uint16_t tracepos, uint8_t *trace, uint16_t traceLen)
+{
+ return(tracepos + sizeof(uint32_t) + sizeof(uint16_t) + sizeof(uint16_t) >= traceLen);
+}
+
+
+bool next_record_is_response(uint16_t tracepos, uint8_t *trace)
+{
+ uint16_t next_records_datalen = *((uint16_t *)(trace + tracepos + sizeof(uint32_t) + sizeof(uint16_t)));
+
+ return(next_records_datalen & 0x8000);
+}
+
+
+bool merge_topaz_reader_frames(uint32_t timestamp, uint32_t *duration, uint16_t *tracepos, uint16_t traceLen, uint8_t *trace, uint8_t *frame, uint8_t *topaz_reader_command, uint16_t *data_len)
+{
+
+#define MAX_TOPAZ_READER_CMD_LEN 16
+
+ uint32_t last_timestamp = timestamp + *duration;
+
+ if ((*data_len != 1) || (frame[0] == TOPAZ_WUPA) || (frame[0] == TOPAZ_REQA)) return false;
+
+ memcpy(topaz_reader_command, frame, *data_len);
+
+ while (!is_last_record(*tracepos, trace, traceLen) && !next_record_is_response(*tracepos, trace)) {
+ uint32_t next_timestamp = *((uint32_t *)(trace + *tracepos));
+ *tracepos += sizeof(uint32_t);
+ uint16_t next_duration = *((uint16_t *)(trace + *tracepos));
+ *tracepos += sizeof(uint16_t);
+ uint16_t next_data_len = *((uint16_t *)(trace + *tracepos)) & 0x7FFF;
+ *tracepos += sizeof(uint16_t);
+ uint8_t *next_frame = (trace + *tracepos);
+ *tracepos += next_data_len;
+ if ((next_data_len == 1) && (*data_len + next_data_len <= MAX_TOPAZ_READER_CMD_LEN)) {
+ memcpy(topaz_reader_command + *data_len, next_frame, next_data_len);
+ *data_len += next_data_len;
+ last_timestamp = next_timestamp + next_duration;
+ } else {
+ // rewind and exit
+ *tracepos = *tracepos - next_data_len - sizeof(uint16_t) - sizeof(uint16_t) - sizeof(uint32_t);
+ break;
+ }
+ uint16_t next_parity_len = (next_data_len-1)/8 + 1;
+ *tracepos += next_parity_len;
+ }
+
+ *duration = last_timestamp - timestamp;
+
+ return true;
+}
projects / proxmark3-svn / blobdiff