From: mwalker33 Date: Sat, 22 Jun 2019 05:26:56 +0000 (+1000) Subject: T55xx Downlink - Updates X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/4be71814b4a7f5647a01d55882664c5889f4e605?hp=6763dc17a3f76370c766bfdb39179bde3ff7619f T55xx Downlink - Updates Improved code. --- diff --git a/CHANGELOG.md b/CHANGELOG.md index 399f87f9..55f1d1f9 100644 --- a/CHANGELOG.md +++ b/CHANGELOG.md @@ -4,6 +4,34 @@ This project uses the changelog in accordance with [keepchangelog](http://keepac ## [unreleased][unreleased] +## T55xx Downlink Protocol - 22 Jun 2019 + +# armsrc/lfops + +### Added +- Added typedef T55xx_Timing to hold downlink timings. +- Added Timing Records for long leading reference (llr), Leading 0 and 1 of 4 +- Added some constant defines for code readability +- Added function T55xx_SetBits to build a bit stream for writing to T55xx +- Added function T55xx_SendCMD to build the bit stream and send to T55xx + +### Changed +- Converted Timing for default/fixed bit to T55xx_Timing +- Updated T55xxWriteBit (and calls) to support all downlink protocols +- Updated T55xxWriteBlock to call T55xx_SendCMD (removed local bit writes) +- Updated T55xxReadBlock to call T55xx_SendCMD (removed local bit writes) + +# client/cmdlft55xx + +### Added +- Added function T55xx_Print_DownlinkMode to print downlink mode information when uesd + +### Changes +- Added downlink mode options r [ 0 (or missing) default/fixed bit, 1 long leading, leading 0 and 1 of 4 ] +- Added r 4 option to bruteforce to try all downlink modes (0,1,2 and 3) +- Updated help messages for each support functions t55xx_read, t55xx_write, t55_detect, t55xx_bruteforce + + ### Changed - Changed hf mfp security. Now it works in all the modes. (drHatson) - `hf fido` - show/check DER certificate and signatures (Merlok) diff --git a/armsrc/lfops.c b/armsrc/lfops.c index 112a1173..c1f32f87 100644 --- a/armsrc/lfops.c +++ b/armsrc/lfops.c @@ -1198,287 +1198,151 @@ void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol) * and enlarge the gap ones. * Q5 tags seems to have issues when these values changes. */ + /* + // Original Timings for reference + #define START_GAP 31*8 // was 250 // SPEC: 1*8 to 50*8 - typ 15*8 (or 15fc) #define WRITE_GAP 20*8 // was 160 // SPEC: 1*8 to 20*8 - typ 10*8 (or 10fc) #define WRITE_0 18*8 // was 144 // SPEC: 16*8 to 32*8 - typ 24*8 (or 24fc) #define WRITE_1 50*8 // was 400 // SPEC: 48*8 to 64*8 - typ 56*8 (or 56fc) 432 for T55x7; 448 for E5550 #define READ_GAP 15*8 -// Long Leading Reference -#define Reference_llr (136+18)*8 // Needs to be WRITR_0 + 136 clocks. - -void TurnReadLFOn(int delay) { - FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); - // Give it a bit of time for the resonant antenna to settle. - WaitUS(delay); //155*8 //50*8 -} - -// Write one bit to card -void T55xxWriteBit(int bit) { - if (!bit) - TurnReadLFOn(WRITE_0); - else - TurnReadLFOn(WRITE_1); - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - WaitUS(WRITE_GAP); -} - -void T55xxWrite_LLR (void) -{ - TurnReadLFOn (Reference_llr); - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - WaitUS(WRITE_GAP); -} - -#define START_GAPlz 31*8 -#define WRITE_GAPlz 20*8 -#define WRITElz_0 18*8 -#define WRITElz_1 40*8 -#define READ_GAP 15*8 - -void T55xxWriteBit_Leading0(int bit) { - if (!bit) - TurnReadLFOn(WRITElz_0); - else - TurnReadLFOn(WRITElz_1); - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - WaitUS(WRITE_GAPlz); -// WaitUS(160); -} +*/ -#define START_GAP1of4 31*8 // SPEC: 1*8 to 50*8 - typ 10*8 (or 15fc) -#define WRITE_GAP1of4 20*8 // SPEC: 1*8 to 20*8 - typ 10*8 (or 10fc) -// 00 = reference // 8 * 8 - - 68 * 8 -#define WRITE1of4_00 18*8 // SPEC: 8*8 to 68*8 - typ 24*8 (or 24fc) -#define WRITE1of4_01 34*8 // SPEC: dref+9 - dref+16 - dref+24 -#define WRITE1of4_10 50*8 // SPEC: dref+25 - dref+32 - dref+40 -#define WRITE1of4_11 66*8 // SPEC: dref+41 - dref+48 - dref+56 -#define READ1of4_GAP 15*8 +// Structure to hold Timing values. In future will be simplier to add user changable timings. +typedef struct { + uint16_t START_GAP; + uint16_t WRITE_GAP; + uint16_t WRITE_0; + uint16_t WRITE_1; + uint16_t WRITE_2; + uint16_t WRITE_3; + uint16_t READ_GAP; +} T55xx_Timing; -void T55xxWriteBit_1of4(int bits) { +/* + T5577 Timeing from datasheet for reference - switch (bits) - { - case 0 : TurnReadLFOn(WRITE1of4_00); break; - case 1 : TurnReadLFOn(WRITE1of4_01); break; - case 2 : TurnReadLFOn(WRITE1of4_10); break; - case 3 : TurnReadLFOn(WRITE1of4_11); break; - default: - TurnReadLFOn(WRITE1of4_00); - } - - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - WaitUS(WRITE_GAP1of4); -// WaitUS(160); -} - -void T55xxWriteBlockExt_Leading0 (uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) { - - LED_A_ON(); - bool PwdMode = arg & 0x1; - uint8_t Page = (arg & 0x2)>>1; - bool testMode = arg & 0x4; - uint32_t i = 0; + Fixed bit length + ---------------- + Normal Down Link Fast Downlink + Min Typ Max Min Typ Max + Start gap 8 15 50 8 15 50 + Write gap 8 10 20 8 10 20 + 0 data 16 24 32 8 12 16 + 1 data 48 56 64 24 28 32 - // Set up FPGA, 125kHz - LFSetupFPGAForADC(95, true); - StartTicks(); - // make sure tag is fully powered up... - WaitMS(5); - // Trigger T55x7 in mode. - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - - WaitUS(START_GAPlz); + Long Leading Reference + ---------------------- + Normal Down Link Fast Downlink + Min Typ Max Min Typ Max + Start gap 8 10 50 8 10 50 + Write gap 8 10 20 8 10 20 + Reference(r) 152 160 168 140 144 148 + 136 + 0 data 132 + 0 data + 0 data r - 143 r - 136 r - 128 r - 135 r - 132 r - 124 + 1 data r - 111 r - 104 r - 96 r - 119 r - 116 r - 112 - /* - 0 : Leading Zero - 11 : Opcode - 00 : Fixed 00 if protected write (i.e. have password) - <32 bit Password> - 0 : Lock Bit - <32 bit data> - <3 bit addr> - - Standard Write : 0 1p L <32 data bits> <3 bit addr> - 0 10 0 00000000000000000000000000000000 001 - Protected Write: 0 1p 00 <32 pwd bits> L <32 data bits> <3 bit addr> - 0 10 00 00000000000000000000000000000000 0 00000000000000000000000000000000 001 - Wake Up 0 10 00 <32 pwd bits> - Protected Read 0 1p 00 <32 pwd bits> 0 <3 bit addr> - Standard Read 0 1p 0 <3 bit addr> - Page 0/1 read 0 1p - Reset 0 00 - - */ - T55xxWriteBit_Leading0 (0); //T55xxWriteBit(0); - - if (testMode) Dbprintf("TestMODE"); - // Std Opcode 10 - T55xxWriteBit_Leading0 (testMode ? 0 : 1); - T55xxWriteBit_Leading0 (testMode ? 1 : Page); //Page 0 - + Leading Zero Reference + ---------------------- + Normal Down Link Fast Downlink + Min Typ Max Min Typ Max + Start gap 8 10 50 8 10 50 + Write gap 8 10 20 8 10 20 + Reference(r) 12 - 72 8 - 68 + 0 data r - 7 r r + 8 r - 3 r r + 4 + 1 data r + 9 r + 16 r + 24 r + 5 r + 8 r + 12 - if (PwdMode) { - // Leading zero - insert two fixed 00 between opcode and password - T55xxWriteBit_Leading0 (0); - T55xxWriteBit_Leading0 (0); - // Send Pwd - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit_Leading0 (Pwd & i); - } - // Send Lock bit - T55xxWriteBit_Leading0 (0); + 1 of 4 Coding + ------------- + Normal Down Link Fast Downlink + Min Typ Max Min Typ Max + Start gap 8 10 50 8 10 50 + Write gap 8 10 20 8 10 20 + Reference(r) 8 - 68 12 - 72 + 00 data r - 7 r r + 8 r - 3 r r + 4 + 01 data r + 9 r + 16 r + 24 r + 5 r + 8 r + 12 + 10 data r + 25 r + 32 r + 40 r + 13 r + 16 r + 20 + 11 data r + 41 r + 48 r + 56 r + 21 r + 24 r + 28 + +*/ - // Send Data - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit_Leading0(Data & i); +// Set Initial/Default Values. Note: *8 can occure when used. This should keep things simplier here. +T55xx_Timing T55xx_Timing_FixedBit = { 31 * 8 , 20 * 8 , 18 * 8 , 50 * 8 , 0 , 0 , 15 * 8 }; +T55xx_Timing T55xx_Timing_LLR = { 31 * 8 , 20 * 8 , 18 * 8 , 50 * 8 , 0 , 0 , 15 * 8 }; +T55xx_Timing T55xx_Timing_Leading0 = { 31 * 8 , 20 * 8 , 18 * 8 , 40 * 8 , 0 , 0 , 15 * 8 }; +T55xx_Timing T55xx_Timing_1of4 = { 31 * 8 , 20 * 8 , 18 * 8 , 34 * 8 , 50 * 8 , 66 * 8 , 15 * 8 }; - // Send Block number - for (i = 0x04; i != 0; i >>= 1) - T55xxWriteBit_Leading0 (Block & i); - - // Perform write (nominal is 5.6 ms for T55x7 and 18ms for E5550, - // so wait a little more) - // "there is a clock delay before programming" - // - programming takes ~5.6ms for t5577 ~18ms for E5550 or t5567 - // so we should wait 1 clock + 5.6ms then read response? - // but we need to know we are dealing with t5577 vs t5567 vs e5550 (or q5) marshmellow... - if (testMode) { - //TESTMODE TIMING TESTS: - // <566us does nothing - // 566-568 switches between wiping to 0s and doing nothing - // 5184 wipes and allows 1 block to be programmed. - // indefinite power on wipes and then programs all blocks with bitshifted data sent. - TurnReadLFOn(5184); - } else { - TurnReadLFOn(20 * 1000); - //could attempt to do a read to confirm write took - // as the tag should repeat back the new block - // until it is reset, but to confirm it we would - // need to know the current block 0 config mode for - // modulation clock an other details to demod the response... - // response should be (for t55x7) a 0 bit then (ST if on) - // block data written in on repeat until reset. - - //DoPartialAcquisition(20, true, 12000); - } +// Some defines for readability +#define T55xx_LongLeadingReference 4 // Value to tell Write Bit to send long reference +#define T55xx_DLMode_Fixed 0 // Default Mode +#define T55xx_DLMode_LLR 1 // Long Leading Reference +#define T55xx_DLMode_Leading0 2 // Leading Zero +#define T55xx_DLMode_1of4 3 // 1 of 4 - // turn field off - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_A_OFF(); - +void TurnReadLFOn(int delay) { + FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_ADC | FPGA_LF_ADC_READER_FIELD); + // Give it a bit of time for the resonant antenna to settle. + WaitUS(delay); //155*8 //50*8 } -void T55xxWriteBlockExt_1of4 (uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) { - LED_A_ON(); - bool PwdMode = arg & 0x1; - uint8_t Page = (arg & 0x2)>>1; - bool testMode = arg & 0x4; - int bitpos; - uint8_t bits; - - // Set up FPGA, 125kHz - LFSetupFPGAForADC(95, true); - StartTicks(); - // make sure tag is fully powered up... - WaitMS(5); - // Trigger T55x7 in mode. - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); +// Write one bit to card +void T55xxWriteBit(int bit, T55xx_Timing *Timings) { - - WaitUS(START_GAP1of4); - - - /* - 00 : 1 if 4 - 11 : Opcode - 00 : Fixed 00 if protected write (i.e. have password) - <32 bit Password> - 0 : Lock Bit - <32 bit data> - <3 bit addr> - - Standard Write : 00 1p L <32 data bits> <3 bit addr> - 00 10 0 00000000000000000000000000000000 001 - Protected Write: 00 1p 00 <32 pwd bits> L <32 data bits> <3 bit addr> - 00 10 00 00000000000000000000000000000000 0 00000000000000000000000000000000 001 - Wake Up 00 10 00 <32 pwd bits> - Protected Read 00 1p 00 <32 pwd bits> 0 <3 bit addr> - Standard Read 00 1p 0 <3 bit addr> - Page 0/1 read 00 1p - Reset 00 00 - - */ - T55xxWriteBit_1of4 (0); //Send Reference 00 - - if (testMode) Dbprintf("TestMODE"); - // Std Opcode 10 - if (testMode) bits = 0; else bits = 2; // 0x or 1x - if (testMode) bits |= 1; else bits += (Page); // x0 or x1 - T55xxWriteBit_1of4 (bits); - - if (PwdMode) { - // 1 of 4 00 - insert two fixed 00 between opcode and password - T55xxWriteBit_1of4 (0); // 00 - - // Send Pwd - for (bitpos = 31; bitpos >= 1; bitpos -= 2) { // 2 bits at a time - bits = (((Pwd >> bitpos) & 1) << 1) + ((Pwd >> (bitpos-1)) & 1); - T55xxWriteBit_1of4 (bits); - } - } - - // Send Lock bit - bits = 0; // Add lock bit (Not Set) to the next 2 bits - - // Send Data - offset by 1 bit due to lock bit - // 2 bits at a time - Initilised with lock bit above - for (bitpos = 31; bitpos >= 1; bitpos -= 2) { - bits |= ((Data >> bitpos) & 1); // Add Low bit - T55xxWriteBit_1of4 (bits); - bits = ((Data >> (bitpos-1)) & 1) << 1; // Set next high bit - } + // If bit = 4 Send Long Leading Reference which is 138 + WRITE_0 - // Send Block number - bits |= ((Block >> 2) & 1); - T55xxWriteBit_1of4 (bits); - bits = (Block & 3);// 1) & 2) + (Block & 1); - T55xxWriteBit_1of4 (bits); - - // Perform write (nominal is 5.6 ms for T55x7 and 18ms for E5550, - // so wait a little more) - // "there is a clock delay before programming" - // - programming takes ~5.6ms for t5577 ~18ms for E5550 or t5567 - // so we should wait 1 clock + 5.6ms then read response? - // but we need to know we are dealing with t5577 vs t5567 vs e5550 (or q5) marshmellow... - if (testMode) { - //TESTMODE TIMING TESTS: - // <566us does nothing - // 566-568 switches between wiping to 0s and doing nothing - // 5184 wipes and allows 1 block to be programmed. - // indefinite power on wipes and then programs all blocks with bitshifted data sent. - TurnReadLFOn(5184); + switch (bit){ + case 0 : TurnReadLFOn(Timings->WRITE_0); break; // Send bit 0/00 + case 1 : TurnReadLFOn(Timings->WRITE_1); break; // Send bit 1/01 + case 2 : TurnReadLFOn(Timings->WRITE_2); break; // Send bits 10 + case 3 : TurnReadLFOn(Timings->WRITE_3); break; // Send bits 11 + case 4 : TurnReadLFOn(Timings->WRITE_0 + (136 * 8)); break; // Send Long Leading Reference + } + FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); + WaitUS(Timings->WRITE_GAP); +} - } else { - TurnReadLFOn(20 * 1000); - //could attempt to do a read to confirm write took - // as the tag should repeat back the new block - // until it is reset, but to confirm it we would - // need to know the current block 0 config mode for - // modulation clock an other details to demod the response... - // response should be (for t55x7) a 0 bit then (ST if on) - // block data written in on repeat until reset. - - //DoPartialAcquisition(20, true, 12000); - } - // turn field off - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_A_OFF(); - +// Function to abstract an Arbitrary length byte array to store bit pattern. +// bit_array - Array to hold data/bit pattern +// start_offset - bit location to start storing new bits. +// data - upto 32 bits of data to store +// num_bits - how many bits (low x bits of data) Max 32 bits at a time +// max_len - how many bytes can the bit_array hold (ensure no buffer overflow) +// returns "Next" bit offset / bits stored (for next store) +int T55xx_SetBits (uint8_t *bit_array, int start_offset, uint32_t data , int num_bits, int max_len) +{ + int bit,byte_idx, bit_idx; + int offset; + int NextOffset = start_offset; + + // Check if data will fit. + if ((start_offset + num_bits) <= (max_len*8)) { + + // Loop through the data and store + for (offset = (num_bits-1); offset >= 0; offset--) { + + bit = (data >> offset) & 1; // Get data bit value (0/1) + byte_idx = (NextOffset / 8); // Get Array Byte Index to Store + bit_idx = NextOffset - (byte_idx * 8); // Get Bit Index to set/clr + + // If set (1) we OR, if clear (0) we AND with inverse + // Dbprintf ("Add Bit : %d at byte %d bit %d",bit,byte_idx,bit_idx); + if (bit == 1) + bit_array[byte_idx] |= (1 << bit_idx); // Set the bit to 1 + + else + bit_array[byte_idx] &= (0xff ^ (1 << bit_idx)); // Set the bit to 0 (clr) + + NextOffset++; + } + } + else + Dbprintf ("Too Many Bits to fit into bit buffer"); + return NextOffset; } // Send T5577 reset command then read stream (see if we can identify the start of the stream) @@ -1495,13 +1359,13 @@ void T55xxResetRead(void) { // Trigger T55x7 in mode. FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - WaitUS(START_GAP); + WaitUS(T55xx_Timing_FixedBit.START_GAP); // reset tag - op code 00 - T55xxWriteBit(0); - T55xxWriteBit(0); + T55xxWriteBit(0,&T55xx_Timing_FixedBit); + T55xxWriteBit(0,&T55xx_Timing_FixedBit); - TurnReadLFOn(READ_GAP); + TurnReadLFOn(T55xx_Timing_FixedBit.READ_GAP); // Acquisition DoPartialAcquisition(0, true, BigBuf_max_traceLen(), 0); @@ -1512,18 +1376,85 @@ void T55xxResetRead(void) { LED_A_OFF(); } -// Write one card block in page 0, no lock -void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) { - LED_A_ON(); - bool PwdMode = arg & 0x1; - uint8_t Page = (arg & 0x2)>>1; - bool testMode = arg & 0x4; - uint32_t i = 0; - uint8_t downlink_mode; +// Send one downlink command to the card +void T55xx_SendCMD (uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) { //, bool read_cmd) {//, struct T55xx_Timing *Timing) { + + /* + arg bits + xxxxxxx1 0x01 PwdMode + xxxxxx1x 0x02 Page + xxxxx1xx 0x04 testMode + xxx11xxx 0x18 downlink mode + xx1xxxxx 0x20 reg_readmode + x1xxxxxx 0x40 called for a read, so no data packet + + */ + bool PwdMode = ((arg & 0x01) == 0x01); + uint8_t Page = (arg & 0x02) >> 1; + bool testMode = ((arg & 0x04) == 0x04); + uint8_t downlink_mode = (arg >> 3) & 0x03;; + bool reg_readmode = ((arg & 0x20) == 0x20); + bool read_cmd = ((arg & 0x40) == 0x40); + + int i = 0; + uint8_t BitStream[10]; // Max Downlink Command size ~75 bits, so 10 bytes (80 bits) + uint8_t BitStreamLen; + int byte_idx, bit_idx; + T55xx_Timing *Timing; + + + // Assigning Downlink Timeing for write + switch (downlink_mode) + { + case T55xx_DLMode_Fixed : Timing = &T55xx_Timing_FixedBit; break; + case T55xx_DLMode_LLR : Timing = &T55xx_Timing_LLR; break; + case T55xx_DLMode_Leading0 : Timing = &T55xx_Timing_Leading0; break; + case T55xx_DLMode_1of4 : Timing = &T55xx_Timing_1of4; break; + default: + Timing = &T55xx_Timing_FixedBit; + } + + // Build Bit Stream to send. + memset (BitStream,0x00,sizeof(BitStream)); - downlink_mode = (arg >> 3) & 0x03; + BitStreamLen = 0; + // Add Leading 0 and 1 of 4 reference bit + if ((downlink_mode == T55xx_DLMode_Leading0) || (downlink_mode == T55xx_DLMode_1of4)) + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, 0, 1,sizeof(BitStream)); + // Add extra reference 0 for 1 of 4 + if (downlink_mode == T55xx_DLMode_1of4) + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, 0, 1,sizeof(BitStream)); + + // Add Opcode + if (testMode) Dbprintf("TestMODE"); + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen,testMode ? 0 : 1 , 1,sizeof(BitStream)); + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen,testMode ? 1 : Page , 1,sizeof(BitStream)); + + if (PwdMode) { + + // Leading 0 and 1 of 4 00 fixed bits if passsword used + if ((downlink_mode == T55xx_DLMode_Leading0) || (downlink_mode == T55xx_DLMode_1of4)) { + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, 0, 1,sizeof(BitStream)); + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, 0, 1,sizeof(BitStream)); + } + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, Pwd, 32,sizeof(BitStream)); + + } + // Add Lock bit + BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, 0, 1,sizeof(BitStream)); + + // Add Data if a write command + if (!read_cmd) BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, Data, 32,sizeof(BitStream)); + + // Add Address + if (!reg_readmode) BitStreamLen = T55xx_SetBits (BitStream, BitStreamLen, Block, 3,sizeof(BitStream)); + + + + // Send Bits to T55xx + // Set up FPGA, 125kHz LFSetupFPGAForADC(95, true); StartTicks(); @@ -1531,31 +1462,56 @@ void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg WaitMS(5); // Trigger T55x7 in mode. FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - WaitUS(START_GAP); + WaitUS(Timing->START_GAP); - // Long Leading Reference, same as fixed/default just with leading reference - if (downlink_mode == 1) T55xxWrite_LLR (); - if (testMode) Dbprintf("TestMODE"); - // Std Opcode 10 - T55xxWriteBit(testMode ? 0 : 1); - T55xxWriteBit(testMode ? 1 : Page); //Page 0 + // If long leading 0 send long reference pulse + if (downlink_mode == T55xx_DLMode_LLR) + T55xxWriteBit (T55xx_LongLeadingReference,Timing); // Send Long Leading Start Reference - if (PwdMode) { - // Send Pwd - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Pwd & i); + uint8_t SendBits; + + if (downlink_mode == T55xx_DLMode_1of4) { // 1 of 4 need to send 2 bits at a time + for (i = 0; i < BitStreamLen; i+=2) { + byte_idx = i / 8; + bit_idx = i - (byte_idx * 8); + SendBits = ((BitStream[byte_idx] >> bit_idx) & 1) << 1; + + byte_idx = (i+1) / 8; + bit_idx = (i+1) - (byte_idx * 8); + SendBits += (BitStream[byte_idx] >> bit_idx) & 1; + + T55xxWriteBit (SendBits,Timing); + } } - // Send Lock bit - T55xxWriteBit(0); - - // Send Data - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Data & i); + else { + for (i = 0; i < BitStreamLen; i++) { + byte_idx = i / 8; + bit_idx = i - (byte_idx * 8); + SendBits = (BitStream[byte_idx] >> bit_idx) & 1; + T55xxWriteBit (SendBits,Timing); + } + } + +} - // Send Block number - for (i = 0x04; i != 0; i >>= 1) - T55xxWriteBit(Block & i); +// Write one card block in page 0, no lock +void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) { + /* + arg bits + xxxxxxx1 0x01 PwdMode + xxxxxx1x 0x02 Page + xxxxx1xx 0x04 testMode + xxx11xxx 0x18 downlink mode + xx1xxxxx 0x20 reg_readmode + x1xxxxxx 0x40 called for a read, so no data packet + */ + + bool testMode = ((arg & 0x04) == 0x04); + arg &= (0xff ^ 0x40); // Called for a write, so ensure it is clear/0 + + LED_A_ON (); + T55xx_SendCMD (Data, Block, Pwd, arg) ;//, false); // Perform write (nominal is 5.6 ms for T55x7 and 18ms for E5550, // so wait a little more) @@ -1584,145 +1540,43 @@ void T55xxWriteBlockExt(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg //DoPartialAcquisition(20, true, 12000); } - // turn field off FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LED_A_OFF(); -} - -// Write one card block in page 0, no lock -void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t arg) { -// arg 8 bit 00000000 -// 0000000x Password -// 000000x0 Page -// 00000x00 Test Mode -// 000xx000 (0x18) where xx : 00 - Normal Write, 01 - Long Leading Reference -// 10 - Leading 0, 11 - 1 of 4 - uint8_t downlink_mode; - - downlink_mode = (arg >> 3) & 0x03; - - switch (downlink_mode) - { - case 0 :// T55xxWriteBlockExt (Data, Block, Pwd, arg); break; - case 1 : // T55xxWrite_LLR (); - T55xxWriteBlockExt (Data, Block, Pwd, arg); - break; - case 2 : T55xxWriteBlockExt_Leading0 (Data, Block, Pwd, arg); break; - case 3 : T55xxWriteBlockExt_1of4 (Data, Block, Pwd, arg); break; - default: - T55xxWriteBlockExt (Data, Block, Pwd, arg); - } - cmd_send(CMD_ACK,0,0,0,0,0); + + LED_A_OFF (); } // Read one card block in page [page] -void T55xxReadBlockExt (uint16_t arg0, uint8_t Block, uint32_t Pwd) { - LED_A_ON(); - bool PwdMode = arg0 & 0x1; - uint8_t Page = (arg0 & 0x2) >> 1; - uint32_t i = 0; - bool RegReadMode = (Block == 0xFF);//regular read mode - uint8_t downlink_mode; +void T55xxReadBlock (uint16_t arg0, uint8_t Block, uint32_t Pwd) {//, struct T55xx_Timing *Timing) { - downlink_mode = (arg0 >> 3) & 0x03; + LED_A_ON(); + + /* + arg bits + xxxxxxx1 0x01 PwdMode + xxxxxx1x 0x02 Page + xxxxx1xx 0x04 testMode + xxx11xxx 0x18 downlink mode + xx1xxxxx 0x20 reg_readmode + x1xxxxxx 0x40 called for a read, so no data packet + */ - //clear buffer now so it does not interfere with timing later - BigBuf_Clear_ext(false); + // Set Read Flag to ensure SendCMD does not add "data" to the packet + arg0 |= 0x40; + + if (Block == 0xff) arg0 |= 0x20; + //make sure block is at max 7 Block &= 0x7; - - // Set up FPGA, 125kHz to power up the tag - LFSetupFPGAForADC(95, true); - StartTicks(); - // make sure tag is fully powered up... - WaitMS(5); - // Trigger T55x7 Direct Access Mode with start gap - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - WaitUS(START_GAP); - - // Long Leading Reference, same as fixed/default just with leading reference - if (downlink_mode == 1) T55xxWrite_LLR (); - - // Opcode 1[page] - T55xxWriteBit(1); - T55xxWriteBit(Page); //Page 0 - - if (PwdMode){ - // Send Pwd - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Pwd & i); - } - // Send a zero bit separation - T55xxWriteBit(0); - - // Send Block number (if direct access mode) - if (!RegReadMode) - for (i = 0x04; i != 0; i >>= 1) - T55xxWriteBit(Block & i); - - // Turn field on to read the response - // 137*8 seems to get to the start of data pretty well... - // but we want to go past the start and let the repeating data settle in... - TurnReadLFOn(210*8); - - // Acquisition - // Now do the acquisition - DoPartialAcquisition(0, true, 12000, 0); - - // Turn the field off - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off -// cmd_send(CMD_ACK,0,0,0,0,0); - LED_A_OFF(); -} - -void T55xxReadBlockExt_Leading0 (uint16_t arg0, uint8_t Block, uint32_t Pwd) { - LED_A_ON(); - bool PwdMode = arg0 & 0x1; - uint8_t Page = (arg0 & 0x2) >> 1; - uint32_t i = 0; - bool RegReadMode = (Block == 0xFF);//regular read mode - //clear buffer now so it does not interfere with timing later BigBuf_Clear_ext(false); - - //make sure block is at max 7 - Block &= 0x7; - - // Set up FPGA, 125kHz to power up the tag - LFSetupFPGAForADC(95, true); - StartTicks(); - // make sure tag is fully powered up... - WaitMS(5); - // Trigger T55x7 Direct Access Mode with start gap - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - WaitUS(START_GAPlz); - - T55xxWriteBit_Leading0 (0); - - // Opcode 1[page] - T55xxWriteBit_Leading0 (1); - T55xxWriteBit_Leading0 (Page); //Page 0 - - if (PwdMode){ - // Send Pwd - T55xxWriteBit_Leading0 (0); - T55xxWriteBit_Leading0 (0); + + T55xx_SendCMD (0, Block, Pwd, arg0); //, true); + - for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit_Leading0 (Pwd & i); - } - // Send a zero bit separation - T55xxWriteBit_Leading0(0); - - // Send Block number (if direct access mode) - if (!RegReadMode) - for (i = 0x04; i != 0; i >>= 1) - T55xxWriteBit_Leading0(Block & i); - // Turn field on to read the response // 137*8 seems to get to the start of data pretty well... // but we want to go past the start and let the repeating data settle in... @@ -1734,104 +1588,11 @@ void T55xxReadBlockExt_Leading0 (uint16_t arg0, uint8_t Block, uint32_t Pwd) { // Turn the field off FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off -// cmd_send(CMD_ACK,0,0,0,0,0); - LED_A_OFF(); -} - -void T55xxReadBlockExt_1of4 (uint16_t arg0, uint8_t Block, uint32_t Pwd) { - LED_A_ON(); - bool PwdMode = arg0 & 0x1; - uint8_t Page = (arg0 & 0x2) >> 1; - //uint32_t i = 0; - bool RegReadMode = (Block == 0xFF);//regular read mode - uint8_t bits; - int bitpos; - - //clear buffer now so it does not interfere with timing later - BigBuf_Clear_ext(false); - - //make sure block is at max 7 - Block &= 0x7; - - // Set up FPGA, 125kHz to power up the tag - LFSetupFPGAForADC(95, true); - StartTicks(); - // make sure tag is fully powered up... - WaitMS(5); - // Trigger T55x7 Direct Access Mode with start gap - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - WaitUS(START_GAP1of4); - - T55xxWriteBit_1of4 (0); // 2 Bit 00 leading reference - - // Opcode 1[page] - bits = 2 + Page; - T55xxWriteBit_1of4 (bits); - - if (PwdMode) { - // 1 of 4 00 - insert two fixed 00 between opcode and password - T55xxWriteBit_1of4 (0); // 00 - - // Send Pwd - for (bitpos = 31; bitpos >= 1; bitpos -= 2) { // 2 bits at a time - bits = (((Pwd >> bitpos) & 1) << 1) + ((Pwd >> (bitpos-1)) & 1); - T55xxWriteBit_1of4 (bits); - } - } - - // Send Lock bit - bits = 0; // Add lock bit (Not Set) to the next 2 bits - - // Send Block number (if direct access mode) - if (!RegReadMode){ - // Send Block number - bits += ((Block >> 2) & 1); - T55xxWriteBit_1of4 (bits); - bits = (Block & 3); // + (Block & 1); - T55xxWriteBit_1of4 (bits); - } - - // Turn field on to read the response - // 137*8 seems to get to the start of data pretty well... - // but we want to go past the start and let the repeating data settle in... - TurnReadLFOn(210*8); + cmd_send(CMD_ACK,0,0,0,0,0); - // Acquisition - // Now do the acquisition - DoPartialAcquisition(0, true, 12000, 0); - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); // field off -// cmd_send(CMD_ACK,0,0,0,0,0); LED_A_OFF(); } -void T55xxReadBlock (uint16_t arg0, uint8_t Block, uint32_t Pwd) { -// arg0 16 bit 00000000 -// 0000000x Password -// 000000x0 Page -// 00000x00 -// 000xx000 (0x18) where xx : 00 - Normal Write, 01 - Long Leading Reference -// 10 - Leading 0, 11 - 1 of 4 - uint8_t downlink_mode; - - downlink_mode = (arg0 >> 3) & 0x03; - - // downlink mode id set to match the 2 bit as per Tech Sheet - switch (downlink_mode) - { - case 0 :// T55xxReadBlockExt (arg0, Block, Pwd); break; - case 1 : // T55xxWrite_LLR (); - T55xxReadBlockExt (arg0, Block, Pwd); - break; - case 2 : T55xxReadBlockExt_Leading0 (arg0, Block, Pwd); break; - case 3 : T55xxReadBlockExt_1of4 (arg0, Block, Pwd); break; - default: - T55xxReadBlockExt (arg0, Block, Pwd) ; - } - -// T55xxReadBlockExt (arg0, Block, Pwd) ; - cmd_send(CMD_ACK,0,0,0,0,0); -} - void T55xxWakeUp(uint32_t Pwd){ LED_B_ON(); uint32_t i = 0; @@ -1844,15 +1605,16 @@ void T55xxWakeUp(uint32_t Pwd){ // Trigger T55x7 Direct Access Mode FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - WaitUS(START_GAP); + WaitUS(T55xx_Timing_FixedBit.START_GAP); // Opcode 10 - T55xxWriteBit(1); - T55xxWriteBit(0); //Page 0 + T55xxWriteBit(1,&T55xx_Timing_FixedBit); + T55xxWriteBit(0,&T55xx_Timing_FixedBit); //Page 0 // Send Pwd + for (i = 0x80000000; i != 0; i >>= 1) - T55xxWriteBit(Pwd & i); + T55xxWriteBit(Pwd & i,&T55xx_Timing_FixedBit); // Turn and leave field on to let the begin repeating transmission TurnReadLFOn(20*1000); @@ -1863,7 +1625,8 @@ void T55xxWakeUp(uint32_t Pwd){ void WriteT55xx(uint32_t *blockdata, uint8_t startblock, uint8_t numblocks) { // write last block first and config block last (if included) for (uint8_t i = numblocks+startblock; i > startblock; i--) { - T55xxWriteBlockExt(blockdata[i-1],i-1,0,0); + T55xxWriteBlock(blockdata[i-1],i-1,0,0);//,false); //,&T55xx_Timing_FixedBit); + // T55xx_SendCMD (blockdata[i-1],i-1,0,0);//,false); //,&T55xx_Timing_FixedBit); } } diff --git a/client/cmdlft55xx.c b/client/cmdlft55xx.c index ed980f9b..c64e5ef2 100644 --- a/client/cmdlft55xx.c +++ b/client/cmdlft55xx.c @@ -311,13 +311,13 @@ int CmdT55xxSetConfig(const char *Cmd) { } // No args - if (cmdp == 0) return printConfiguration( config ); + if (cmdp == 0) return printConfiguration( config); //Validations if (errors) return usage_t55xx_config(); config.block0 = 0; - return printConfiguration ( config ); + return printConfiguration ( config); } int T55xxReadBlock(uint8_t block, bool page1, bool usepwd, bool override, uint32_t password, uint8_t downlink_mode){ @@ -476,6 +476,25 @@ bool DecodeT5555TraceBlock() { return (bool) ASKDemod("64 0 1", false, false, 1); } +void T55xx_Print_DownlinkMode (uint8_t downlink_mode) +{ + char Msg[80]; + sprintf (Msg,"Downlink Mode used : "); + + switch (downlink_mode) { + case 0 : strcat (Msg,"default/fixed bit length"); break; + case 1 : strcat (Msg,"long leading reference (r 1)"); break; + case 2 : strcat (Msg,"leading zero reference (r 2)"); break; + case 3 : strcat (Msg,"1 of 4 coding reference (r 3)"); break; + default : + strcat (Msg,"default/fixed bit length"); break; + + } + + PrintAndLog (Msg); + +} + int CmdT55xxDetect(const char *Cmd){ bool errors = false; bool useGB = false; @@ -522,13 +541,8 @@ int CmdT55xxDetect(const char *Cmd){ if ( !tryDetectModulation() ) PrintAndLog("Could not detect modulation automatically. Try setting it manually with \'lf t55xx config\'"); else { - // Add downlink mode to reference. - switch (downlink_mode) { - case 0 : PrintAndLog ("Downlink : r 0 - default/fixed bit length"); break; - case 1 : PrintAndLog ("Downlink : r 1 - long leading reference"); break; - case 2 : PrintAndLog ("Downlink : r 2 - leading zero reference"); break; - case 3 : PrintAndLog ("Downlink : r 3 - 1 of 4 coding reference"); break; - } + // Add downlink mode for reference. + T55xx_Print_DownlinkMode (downlink_mode); } return 1; } @@ -681,7 +695,8 @@ bool tryDetectModulation(){ config.block0 = tests[0].block0; config.Q5 = tests[0].Q5; config.ST = tests[0].ST; - printConfiguration( config ); + + printConfiguration( config); return true; } @@ -689,7 +704,7 @@ bool tryDetectModulation(){ PrintAndLog("Found [%d] possible matches for modulation.",hits); for(int i=0; i 3 or set to 0, so loop from 0 - 3 for (dl_mode = downlink_mode; dl_mode <= 3; dl_mode++){ if ( !AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, true, testpwd, dl_mode)) { - PrintAndLog("Aquireing data from device failed. Quitting"); + PrintAndLog("Acquiring data from device failed. Quitting"); free(keyBlock); return 0; } @@ -1551,12 +1566,9 @@ int CmdT55xxBruteForce(const char *Cmd) { if ( found ) { PrintAndLog("Found valid password: [%08X]", testpwd); free(keyBlock); - switch (dl_mode) { - case 0 : PrintAndLog ("Downlink : r 0 - default/fixed bit length"); break; - case 1 : PrintAndLog ("Downlink : r 1 - long leading reference"); break; - case 2 : PrintAndLog ("Downlink : r 2 - leading zero reference"); break; - case 3 : PrintAndLog ("Downlink : r 3 - 1 of 4 coding reference"); break; - } + + T55xx_Print_DownlinkMode (dl_mode); + return 0; } if (!try_all_dl_modes) // Exit loop if not trying all downlink modes @@ -1597,7 +1609,7 @@ int CmdT55xxBruteForce(const char *Cmd) { // donwlink_mode will = 0 if > 3 or set to 0, so loop from 0 - 3 for (dl_mode = downlink_mode; dl_mode <= 3; dl_mode++){ if (!AquireData(T55x7_PAGE0, T55x7_CONFIGURATION_BLOCK, true, i,dl_mode)) { - PrintAndLog("Aquireing data from device failed. Quitting"); + PrintAndLog("Acquiring data from device failed. Quitting"); free(keyBlock); return 0; } @@ -1613,12 +1625,7 @@ int CmdT55xxBruteForce(const char *Cmd) { if (found){ PrintAndLog("Found valid password: [%08x]", i); - switch (dl_mode) { - case 0 : PrintAndLog ("Downlink : r 0 - default/fixed bit length"); break; - case 1 : PrintAndLog ("Downlink : r 1 - long leading reference"); break; - case 2 : PrintAndLog ("Downlink : r 2 - leading Zero reference"); break; - case 3 : PrintAndLog ("Downlink : r 3 - 1 of 4 coding reference"); break; - } + T55xx_Print_DownlinkMode (downlink_mode); } else{ PrintAndLog("");