X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/20f9a2a1d54952ed15066c93490f0e8fb0d43b67..refs/pull/969/head:/armsrc/mifareutil.c
diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c
index ede1cbc9..e46c5515 100644
--- a/armsrc/mifareutil.c
+++ b/armsrc/mifareutil.c
@@ -1,63 +1,133 @@
//-----------------------------------------------------------------------------
-// Merlok, May 2011
-// Many authors, that makes it possible
+// Merlok, May 2011, 2012
+// Many authors, whom made it possible
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
// at your option, any later version. See the LICENSE.txt file for the text of
// the license.
//-----------------------------------------------------------------------------
-// code for work with mifare cards.
+// Work with mifare cards.
//-----------------------------------------------------------------------------
+#include "mifareutil.h"
+
+#include <string.h>
+#include <stdbool.h>
+
#include "proxmark3.h"
#include "apps.h"
#include "util.h"
-#include "string.h"
-
+#include "parity.h"
#include "iso14443crc.h"
#include "iso14443a.h"
-#include "crapto1.h"
-#include "mifareutil.h"
+#include "crapto1/crapto1.h"
+#include "mbedtls/des.h"
+#include "protocols.h"
-uint8_t* mifare_get_bigbufptr(void) {
- return (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes
+int MF_DBGLEVEL = MF_DBG_INFO;
+
+// crypto1 helpers
+void mf_crypto1_decryptEx(struct Crypto1State *pcs, uint8_t *data_in, int len, uint8_t *data_out){
+ uint8_t bt = 0;
+ int i;
+
+ if (len != 1) {
+ for (i = 0; i < len; i++)
+ data_out[i] = crypto1_byte(pcs, 0x00, 0) ^ data_in[i];
+ } else {
+ bt = 0;
+ for (i = 0; i < 4; i++)
+ bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data_in[0], i)) << i;
+
+ data_out[0] = bt;
+ }
+ return;
}
-int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t* answer)
-{
- uint8_t dcmd[4], ecmd[4];
- uint32_t pos, par, res;
+void mf_crypto1_decrypt(struct Crypto1State *pcs, uint8_t *data, int len){
+ mf_crypto1_decryptEx(pcs, data, len, data);
+}
+
+void mf_crypto1_encryptEx(struct Crypto1State *pcs, uint8_t *data, uint8_t *in, uint16_t len, uint8_t *par) {
+ uint8_t bt = 0;
+ int i;
+ par[0] = 0;
+
+ for (i = 0; i < len; i++) {
+ bt = data[i];
+ data[i] = crypto1_byte(pcs, in==NULL?0x00:in[i], 0) ^ data[i];
+ if((i&0x0007) == 0)
+ par[i>>3] = 0;
+ par[i>>3] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));
+ }
+ return;
+}
+
+void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, uint8_t *par) {
+ mf_crypto1_encryptEx(pcs, data, NULL, len, par);
+}
+uint8_t mf_crypto1_encrypt4bit(struct Crypto1State *pcs, uint8_t data) {
+ uint8_t bt = 0;
+ int i;
+
+ for (i = 0; i < 4; i++)
+ bt |= (crypto1_bit(pcs, 0, 0) ^ BIT(data, i)) << i;
+
+ return bt;
+}
+
+// send X byte basic commands
+int mifare_sendcmd(uint8_t cmd, uint8_t* data, uint8_t data_size, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing) {
+ uint8_t dcmd[data_size+3];
+ dcmd[0] = cmd;
+ memcpy(dcmd+1,data,data_size);
+ AppendCrc14443a(dcmd, data_size+1);
+ ReaderTransmit(dcmd, sizeof(dcmd), timing);
+ int len = ReaderReceive(answer, answer_parity);
+ if(!len) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("%02X Cmd failed. Card timeout.", cmd);
+ len = ReaderReceive(answer,answer_parity);
+ //return 0;
+ }
+ return len;
+}
+
+// send 2 byte commands
+int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t data, uint8_t *answer, uint8_t *answer_parity, uint32_t *timing) {
+ uint8_t dcmd[4], ecmd[4];
+ uint16_t pos, res;
+ uint8_t par[1]; // 1 Byte parity is enough here
dcmd[0] = cmd;
dcmd[1] = data;
AppendCrc14443a(dcmd, 2);
-
+
memcpy(ecmd, dcmd, sizeof(dcmd));
-
+
if (crypted) {
- par = 0;
+ par[0] = 0;
for (pos = 0; pos < 4; pos++)
{
ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];
- par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) * 0x08 );
- }
-
- ReaderTransmitPar(ecmd, sizeof(ecmd), par);
-
+ par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));
+ }
+ ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);
} else {
- ReaderTransmit(dcmd, sizeof(dcmd));
+ ReaderTransmit(dcmd, sizeof(dcmd), timing);
}
- int len = ReaderReceive(answer);
+ int len = ReaderReceive(answer, par);
- if (crypted) {
+ if (answer_parity) *answer_parity = par[0];
+
+ if (crypted == CRYPT_ALL) {
if (len == 1) {
res = 0;
for (pos = 0; pos < 4; pos++)
res |= (crypto1_bit(pcs, 0, 0) ^ BIT(answer[0], pos)) << pos;
-
+
answer[0] = res;
-
+
} else {
for (pos = 0; pos < len; pos++)
{
@@ -65,175 +135,810 @@ int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd,
}
}
}
-
+
return len;
}
-int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint64_t isNested)
-{
- // variables
- int len;
+
+// mifare classic commands
+int mifare_classic_auth(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested, uint32_t *auth_timeout) {
+
+ return mifare_classic_authex(pcs, uid, blockNo, keyType, ui64Key, isNested, NULL, NULL, auth_timeout);
+}
+
+
+int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t keyType, uint64_t ui64Key, uint8_t isNested, uint32_t *ntptr, uint32_t *timing, uint32_t *auth_timeout) {
+
+ int len;
uint32_t pos;
- uint8_t tmp4[4];
- byte_t par = 0;
- byte_t ar[4];
+ uint8_t par[1] = {0x00};
+ byte_t nr[4];
uint32_t nt, ntpp; // Supplied tag nonce
-
+
uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
- uint8_t* receivedAnswer = mifare_get_bigbufptr();
-
- // Transmit MIFARE_CLASSIC_AUTH
- len = mifare_sendcmd_short(pcs, isNested, 0x60 + (keyType & 0x01), blockNo, receivedAnswer);
-// Dbprintf("rand nonce len: %x", len);
- if (len != 4) return 1;
-
- ar[0] = 0x55;
- ar[1] = 0x41;
- ar[2] = 0x49;
- ar[3] = 0x92;
-
+ uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+
+ // Transmit MIFARE_CLASSIC_AUTH
+ len = mifare_sendcmd_short(pcs, isNested, keyType & 0x01 ? MIFARE_AUTH_KEYB : MIFARE_AUTH_KEYA, blockNo, receivedAnswer, receivedAnswerPar, timing);
+ if (MF_DBGLEVEL >= 4) Dbprintf("rand tag nonce len: %x", len);
+ if (len != 4) return 1;
+
+ // "random" reader nonce:
+ nr[0] = 0x55;
+ nr[1] = 0x41;
+ nr[2] = 0x49;
+ nr[3] = 0x92;
+
// Save the tag nonce (nt)
nt = bytes_to_num(receivedAnswer, 4);
- Dbprintf("uid: %x nt: %x", uid, nt);
// ----------------------------- crypto1 create
- // Init cipher with key
+ if (isNested)
+ crypto1_destroy(pcs);
+
+ // Init cipher with key
crypto1_create(pcs, ui64Key);
- // Load (plain) uid^nt into the cipher
- crypto1_word(pcs, nt ^ uid, 0);
+ if (isNested == AUTH_NESTED) {
+ // decrypt nt with help of new key
+ nt = crypto1_word(pcs, nt ^ uid, 1) ^ nt;
+ } else {
+ // Load (plain) uid^nt into the cipher
+ crypto1_word(pcs, nt ^ uid, 0);
+ }
+
+ // some statistic
+ if (!ntptr && (MF_DBGLEVEL >= 3))
+ Dbprintf("auth uid: %08x nt: %08x", uid, nt);
+
+ // save Nt
+ if (ntptr)
+ *ntptr = nt;
- par = 0;
- // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
- for (pos = 0; pos < 4; pos++)
- {
- mf_nr_ar[pos] = crypto1_byte(pcs, ar[pos], 0) ^ ar[pos];
- par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(ar[pos])) & 0x01) * 0x80 );
- }
-
- // Skip 32 bits in pseudo random generator
- nt = prng_successor(nt,32);
+ // Generate (encrypted) nr+parity by loading it into the cipher (Nr)
+ par[0] = 0;
+ for (pos = 0; pos < 4; pos++) {
+ mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];
+ par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));
+ }
+
+ // Skip 32 bits in pseudo random generator
+ nt = prng_successor(nt,32);
// ar+parity
- for (pos = 4; pos < 8; pos++)
- {
+ for (pos = 4; pos < 8; pos++) {
nt = prng_successor(nt,8);
- mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);
- par = (par >> 1)| ( ((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) * 0x80 );
- }
-
- // Transmit reader nonce and reader answer
- ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par);
-
- // Receive 4 bit answer
- len = ReaderReceive(receivedAnswer);
- if (!len)
- {
- Dbprintf("Authentication failed. Card timeout.");
+ mf_nr_ar[pos] = crypto1_byte(pcs, 0x00, 0) ^ (nt & 0xff);
+ par[0] |= (((filter(pcs->odd) ^ oddparity8(nt)) & 0x01) << (7-pos));
+ }
+
+ // Transmit reader nonce and reader answer
+ ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
+
+ // Receive 4 byte tag answer
+ uint32_t save_timeout = iso14a_get_timeout(); // save standard timeout
+ if (auth_timeout && *auth_timeout) {
+ iso14a_set_timeout(*auth_timeout); // set timeout for authentication response
+ }
+ uint32_t auth_timeout_start = GetCountSspClk();
+ len = ReaderReceive(receivedAnswer, receivedAnswerPar);
+ iso14a_set_timeout(save_timeout); // restore standard timeout
+ if (!len) {
+ if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Card timeout.");
return 2;
- }
-
- memcpy(tmp4, receivedAnswer, 4);
- ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0,0);
-
- if (ntpp != bytes_to_num(tmp4, 4)) {
- Dbprintf("Authentication failed. Error card response.");
+ }
+ if (auth_timeout && !*auth_timeout) { // measure time for future authentication response timeout
+ *auth_timeout = (GetCountSspClk() - auth_timeout_start - (len * 9 + 2) * 8) / 8 + 1;
+ }
+
+ ntpp = prng_successor(nt, 32) ^ crypto1_word(pcs, 0, 0);
+
+ if (ntpp != bytes_to_num(receivedAnswer, 4)) {
+ if (MF_DBGLEVEL >= 1) Dbprintf("Authentication failed. Error card response.");
return 3;
}
return 0;
}
-int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
-{
+
+int mifare_classic_readblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData) {
// variables
- int len;
- uint8_t bt[2];
-
- uint8_t* receivedAnswer = mifare_get_bigbufptr();
-
- // command MIFARE_CLASSIC_READBLOCK
- len = mifare_sendcmd_short(pcs, 1, 0x30, blockNo, receivedAnswer);
+ int len;
+ uint8_t bt[2];
+
+ uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+
+ // command MIFARE_CLASSIC_READBLOCK
+ len = mifare_sendcmd_short(pcs, 1, MIFARE_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
if (len == 1) {
- Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
+ if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
return 1;
}
if (len != 18) {
- Dbprintf("Cmd Error: card timeout. len: %x", len);
+ if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: card timeout. len: %x", len);
return 2;
}
memcpy(bt, receivedAnswer + 16, 2);
- AppendCrc14443a(receivedAnswer, 16);
+ AppendCrc14443a(receivedAnswer, 16);
if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
- Dbprintf("Cmd CRC response error.");
+ if (MF_DBGLEVEL >= 1) Dbprintf("Cmd CRC response error.");
return 3;
}
-
+
memcpy(blockData, receivedAnswer, 16);
return 0;
}
-int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
+// mifare ultralight commands
+int mifare_ul_ev1_auth(uint8_t *keybytes, uint8_t *pack){
+
+ uint16_t len;
+ uint8_t resp[4];
+ uint8_t respPar[1];
+ uint8_t key[4] = {0x00};
+ memcpy(key, keybytes, 4);
+
+ if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
+ Dbprintf("EV1 Auth : %02x%02x%02x%02x", key[0], key[1], key[2], key[3]);
+ len = mifare_sendcmd(MIFARE_ULEV1_AUTH, key, sizeof(key), resp, respPar, NULL);
+ //len = mifare_sendcmd_short_mfuev1auth(NULL, 0, 0x1B, key, resp, respPar, NULL);
+ if (len != 4) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x %u", resp[0], len);
+ return 0;
+ }
+
+ if (MF_DBGLEVEL >= MF_DBG_EXTENDED)
+ Dbprintf("Auth Resp: %02x%02x%02x%02x", resp[0],resp[1],resp[2],resp[3]);
+
+ memcpy(pack, resp, 4);
+ return 1;
+}
+
+int mifare_ultra_auth(uint8_t *keybytes){
+
+ /// 3des2k
+
+ mbedtls_des3_context ctx = { {0} };
+ uint8_t random_a[8] = {1,1,1,1,1,1,1,1};
+ uint8_t random_b[8] = {0x00};
+ uint8_t enc_random_b[8] = {0x00};
+ uint8_t rnd_ab[16] = {0x00};
+ uint8_t IV[8] = {0x00};
+ uint8_t key[16] = {0x00};
+ memcpy(key, keybytes, 16);
+
+ uint16_t len;
+ uint8_t resp[19] = {0x00};
+ uint8_t respPar[3] = {0,0,0};
+
+ // REQUEST AUTHENTICATION
+ len = mifare_sendcmd_short(NULL, 1, MIFARE_ULC_AUTH_1, 0x00, resp, respPar ,NULL);
+ if (len != 11) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
+ return 0;
+ }
+
+ // tag nonce.
+ memcpy(enc_random_b,resp+1,8);
+
+ // decrypt nonce.
+ // tdes_2key_dec(random_b, enc_random_b, sizeof(random_b), key, IV );
+ mbedtls_des3_set2key_dec(&ctx, key);
+ mbedtls_des3_crypt_cbc(&ctx // des3_context
+ , MBEDTLS_DES_DECRYPT // int mode
+ , sizeof(random_b) // length
+ , IV // iv[8]
+ , enc_random_b // input
+ , random_b // output
+ );
+
+ rol(random_b,8);
+ memcpy(rnd_ab ,random_a,8);
+ memcpy(rnd_ab+8,random_b,8);
+
+ if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
+ Dbprintf("enc_B: %02x %02x %02x %02x %02x %02x %02x %02x",
+ enc_random_b[0],enc_random_b[1],enc_random_b[2],enc_random_b[3],enc_random_b[4],enc_random_b[5],enc_random_b[6],enc_random_b[7]);
+
+ Dbprintf(" B: %02x %02x %02x %02x %02x %02x %02x %02x",
+ random_b[0],random_b[1],random_b[2],random_b[3],random_b[4],random_b[5],random_b[6],random_b[7]);
+
+ Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
+ rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
+
+ Dbprintf("rnd_ab: %02x %02x %02x %02x %02x %02x %02x %02x",
+ rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15] );
+ }
+
+ // encrypt out, in, length, key, iv
+ //tdes_2key_enc(rnd_ab, rnd_ab, sizeof(rnd_ab), key, enc_random_b);
+ mbedtls_des3_set2key_enc(&ctx, key);
+ mbedtls_des3_crypt_cbc(&ctx // des3_context
+ , MBEDTLS_DES_ENCRYPT // int mode
+ , sizeof(rnd_ab) // length
+ , enc_random_b // iv[8]
+ , rnd_ab // input
+ , rnd_ab // output
+ );
+
+ //len = mifare_sendcmd_short_mfucauth(NULL, 1, 0xAF, rnd_ab, resp, respPar, NULL);
+ len = mifare_sendcmd(MIFARE_ULC_AUTH_2, rnd_ab, sizeof(rnd_ab), resp, respPar, NULL);
+ if (len != 11) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", resp[0]);
+ return 0;
+ }
+
+ uint8_t enc_resp[8] = { 0,0,0,0,0,0,0,0 };
+ uint8_t resp_random_a[8] = { 0,0,0,0,0,0,0,0 };
+ memcpy(enc_resp, resp+1, 8);
+
+ // decrypt out, in, length, key, iv
+ // tdes_2key_dec(resp_random_a, enc_resp, 8, key, enc_random_b);
+ mbedtls_des3_set2key_dec(&ctx, key);
+ mbedtls_des3_crypt_cbc(&ctx // des3_context
+ , MBEDTLS_DES_DECRYPT // int mode
+ , 8 // length
+ , enc_random_b // iv[8]
+ , enc_resp // input
+ , resp_random_a // output
+ );
+ if ( memcmp(resp_random_a, random_a, 8) != 0 ) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("failed authentication");
+ return 0;
+ }
+
+ if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
+ Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
+ rnd_ab[0],rnd_ab[1],rnd_ab[2],rnd_ab[3],
+ rnd_ab[4],rnd_ab[5],rnd_ab[6],rnd_ab[7]);
+
+ Dbprintf("e_AB: %02x %02x %02x %02x %02x %02x %02x %02x",
+ rnd_ab[8],rnd_ab[9],rnd_ab[10],rnd_ab[11],
+ rnd_ab[12],rnd_ab[13],rnd_ab[14],rnd_ab[15]);
+
+ Dbprintf("a: %02x %02x %02x %02x %02x %02x %02x %02x",
+ random_a[0],random_a[1],random_a[2],random_a[3],
+ random_a[4],random_a[5],random_a[6],random_a[7]);
+
+ Dbprintf("b: %02x %02x %02x %02x %02x %02x %02x %02x",
+ resp_random_a[0],resp_random_a[1],resp_random_a[2],resp_random_a[3],
+ resp_random_a[4],resp_random_a[5],resp_random_a[6],resp_random_a[7]);
+ }
+ return 1;
+}
+
+
+#define MFU_MAX_RETRIES 5
+int mifare_ultra_readblock(uint8_t blockNo, uint8_t *blockData)
+{
+ uint16_t len;
+ uint8_t bt[2];
+ uint8_t receivedAnswer[MAX_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
+ uint8_t retries;
+ int result = 0;
+
+ for (retries = 0; retries < MFU_MAX_RETRIES; retries++) {
+ len = mifare_sendcmd_short(NULL, 1, MIFARE_CMD_READBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
+ if (len == 1) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
+ result = 1;
+ continue;
+ }
+ if (len != 18) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd Error: card timeout. len: %x", len);
+ result = 2;
+ continue;
+ }
+
+ memcpy(bt, receivedAnswer + 16, 2);
+ AppendCrc14443a(receivedAnswer, 16);
+ if (bt[0] != receivedAnswer[16] || bt[1] != receivedAnswer[17]) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("Cmd CRC response error.");
+ result = 3;
+ continue;
+ }
+
+ // No errors encountered; don't retry
+ result = 0;
+ break;
+ }
+
+ if (result != 0) {
+ Dbprintf("Cmd Error: too many retries; read failed");
+ return result;
+ }
+
+ memcpy(blockData, receivedAnswer, 16);
+ return 0;
+}
+
+int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t blockNo, uint8_t *blockData)
{
// variables
- int len, i;
+ uint16_t len, i;
uint32_t pos;
- uint32_t par = 0;
- byte_t res;
-
+ uint8_t par[3] = {0}; // enough for 18 Bytes to send
+ byte_t res;
+
uint8_t d_block[18], d_block_enc[18];
- uint8_t* receivedAnswer = mifare_get_bigbufptr();
-
- // command MIFARE_CLASSIC_WRITEBLOCK
- len = mifare_sendcmd_short(pcs, 1, 0xA0, blockNo, receivedAnswer);
+ uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+
+ // command MIFARE_CLASSIC_WRITEBLOCK
+ len = mifare_sendcmd_short(pcs, 1, MIFARE_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
- Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
+ if (MF_DBGLEVEL >= 1) Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
return 1;
}
-
+
memcpy(d_block, blockData, 16);
AppendCrc14443a(d_block, 16);
-
+
// crypto
- par = 0;
- for (pos = 0; pos < 18; pos++)
- {
- d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
- par = (par >> 1) | ( ((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) * 0x20000 );
- }
+ for (pos = 0; pos < 18; pos++)
+ {
+ d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];
+ par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));
+ }
- ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par);
+ ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);
- // Receive the response
- len = ReaderReceive(receivedAnswer);
+ // Receive the response
+ len = ReaderReceive(receivedAnswer, receivedAnswerPar);
res = 0;
for (i = 0; i < 4; i++)
res |= (crypto1_bit(pcs, 0, 0) ^ BIT(receivedAnswer[0], i)) << i;
if ((len != 1) || (res != 0x0A)) {
- Dbprintf("Cmd send data2 Error: %02x", res);
+ if (MF_DBGLEVEL >= 1) Dbprintf("Cmd send data2 Error: %02x", res);
return 2;
}
-
+
return 0;
}
-int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
+/* // command not needed, but left for future testing
+int mifare_ultra_writeblock_compat(uint8_t blockNo, uint8_t *blockData)
{
- // variables
- int len;
-
- // Mifare HALT
- uint8_t* receivedAnswer = mifare_get_bigbufptr();
-
- len = mifare_sendcmd_short(pcs, 1, 0x50, 0x00, receivedAnswer);
- if (len != 0) {
- Dbprintf("halt error. response len: %x", len);
+ uint16_t len;
+ uint8_t par[3] = {0}; // enough for 18 parity bits
+ uint8_t d_block[18] = {0x00};
+ uint8_t receivedAnswer[MAX_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
+
+ len = mifare_sendcmd_short(NULL, true, MIFARE_CMD_WRITEBLOCK, blockNo, receivedAnswer, receivedAnswerPar, NULL);
+
+ if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
+ if (MF_DBGLEVEL >= MF_DBG_ERROR)
+ Dbprintf("Cmd Addr Error: %02x", receivedAnswer[0]);
return 1;
}
+ memcpy(d_block, blockData, 16);
+ AppendCrc14443a(d_block, 16);
+
+ ReaderTransmitPar(d_block, sizeof(d_block), par, NULL);
+
+ len = ReaderReceive(receivedAnswer, receivedAnswerPar);
+
+ if ((len != 1) || (receivedAnswer[0] != 0x0A)) { // 0x0a - ACK
+ if (MF_DBGLEVEL >= MF_DBG_ERROR)
+ Dbprintf("Cmd Data Error: %02x %d", receivedAnswer[0],len);
+ return 2;
+ }
+ return 0;
+}
+*/
+
+int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
+{
+ uint16_t len;
+ uint8_t d_block[5] = {0x00};
+ uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+
+ // command MIFARE_CLASSIC_WRITEBLOCK
+ d_block[0]= blockNo;
+ memcpy(d_block+1,blockData,4);
+ //AppendCrc14443a(d_block, 6);
+
+ len = mifare_sendcmd(0xA2, d_block, sizeof(d_block), receivedAnswer, receivedAnswerPar, NULL);
+
+ if (receivedAnswer[0] != 0x0A) { // 0x0a - ACK
+ if (MF_DBGLEVEL >= MF_DBG_ERROR)
+ Dbprintf("Cmd Send Error: %02x %d", receivedAnswer[0],len);
+ return 1;
+ }
return 0;
}
+
+int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid)
+{
+ uint16_t len;
+ uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+
+ len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, ISO14443A_CMD_HALT, 0x00, receivedAnswer, receivedAnswerPar, NULL);
+ if (len != 0) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR)
+ Dbprintf("halt error. response len: %x", len);
+ return 1;
+ }
+
+ return 0;
+}
+
+int mifare_ultra_halt()
+{
+ uint16_t len;
+ uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+
+ len = mifare_sendcmd_short(NULL, true, ISO14443A_CMD_HALT, 0x00, receivedAnswer, receivedAnswerPar, NULL);
+ if (len != 0) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR)
+ Dbprintf("halt error. response len: %x", len);
+ return 1;
+ }
+ return 0;
+}
+
+
+// Mifare Memory Structure: up to 32 Sectors with 4 blocks each (1k and 2k cards),
+// plus evtl. 8 sectors with 16 blocks each (4k cards)
+uint8_t NumBlocksPerSector(uint8_t sectorNo)
+{
+ if (sectorNo < 32)
+ return 4;
+ else
+ return 16;
+}
+
+uint8_t FirstBlockOfSector(uint8_t sectorNo)
+{
+ if (sectorNo < 32)
+ return sectorNo * 4;
+ else
+ return 32*4 + (sectorNo - 32) * 16;
+
+}
+
+uint8_t SectorTrailer(uint8_t blockNo)
+{
+ if (blockNo < 32*4) {
+ return (blockNo | 0x03);
+ } else {
+ return (blockNo | 0x0f);
+ }
+}
+
+bool IsSectorTrailer(uint8_t blockNo)
+{
+ return (blockNo == SectorTrailer(blockNo));
+}
+
+// work with emulator memory
+void emlSetMem(uint8_t *data, int blockNum, int blocksCount) {
+ uint8_t* emCARD = BigBuf_get_EM_addr();
+ memcpy(emCARD + blockNum * 16, data, blocksCount * 16);
+}
+
+void emlGetMem(uint8_t *data, int blockNum, int blocksCount) {
+ uint8_t* emCARD = BigBuf_get_EM_addr();
+ memcpy(data, emCARD + blockNum * 16, blocksCount * 16);
+}
+
+void emlGetMemBt(uint8_t *data, int bytePtr, int byteCount) {
+ uint8_t* emCARD = BigBuf_get_EM_addr();
+ memcpy(data, emCARD + bytePtr, byteCount);
+}
+
+int emlCheckValBl(int blockNum) {
+ uint8_t* emCARD = BigBuf_get_EM_addr();
+ uint8_t* data = emCARD + blockNum * 16;
+
+ if ((data[0] != (data[4] ^ 0xff)) || (data[0] != data[8]) ||
+ (data[1] != (data[5] ^ 0xff)) || (data[1] != data[9]) ||
+ (data[2] != (data[6] ^ 0xff)) || (data[2] != data[10]) ||
+ (data[3] != (data[7] ^ 0xff)) || (data[3] != data[11]) ||
+ (data[12] != (data[13] ^ 0xff)) || (data[12] != data[14]) ||
+ (data[12] != (data[15] ^ 0xff))
+ )
+ return 1;
+ return 0;
+}
+
+int emlGetValBl(uint32_t *blReg, uint8_t *blBlock, int blockNum) {
+ uint8_t* emCARD = BigBuf_get_EM_addr();
+ uint8_t* data = emCARD + blockNum * 16;
+
+ if (emlCheckValBl(blockNum)) {
+ return 1;
+ }
+
+ memcpy(blReg, data, 4);
+ *blBlock = data[12];
+ return 0;
+}
+
+int emlSetValBl(uint32_t blReg, uint8_t blBlock, int blockNum) {
+ uint8_t* emCARD = BigBuf_get_EM_addr();
+ uint8_t* data = emCARD + blockNum * 16;
+
+ memcpy(data + 0, &blReg, 4);
+ memcpy(data + 8, &blReg, 4);
+ blReg = blReg ^ 0xffffffff;
+ memcpy(data + 4, &blReg, 4);
+
+ data[12] = blBlock;
+ data[13] = blBlock ^ 0xff;
+ data[14] = blBlock;
+ data[15] = blBlock ^ 0xff;
+
+ return 0;
+}
+
+uint64_t emlGetKey(int sectorNum, int keyType) {
+ uint8_t key[6];
+ uint8_t* emCARD = BigBuf_get_EM_addr();
+
+ memcpy(key, emCARD + 16 * (FirstBlockOfSector(sectorNum) + NumBlocksPerSector(sectorNum) - 1) + keyType * 10, 6);
+ return bytes_to_num(key, 6);
+}
+
+void emlClearMem(void) {
+ int b;
+
+ const uint8_t trailer[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0x07, 0x80, 0x69, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};
+ const uint8_t uid[] = {0xe6, 0x84, 0x87, 0xf3, 0x16, 0x88, 0x04, 0x00, 0x46, 0x8e, 0x45, 0x55, 0x4d, 0x70, 0x41, 0x04};
+ uint8_t* emCARD = BigBuf_get_EM_addr();
+
+ memset(emCARD, 0, CARD_MEMORY_SIZE);
+
+ // fill sectors trailer data
+ for(b = 3; b < 256; b<127?(b+=4):(b+=16)) {
+ emlSetMem((uint8_t *)trailer, b , 1);
+ }
+
+ // uid
+ emlSetMem((uint8_t *)uid, 0, 1);
+ return;
+}
+
+
+// Mifare desfire commands
+int mifare_sendcmd_special(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer, uint8_t *answer_parity, uint32_t *timing)
+{
+ uint8_t dcmd[5] = {0x00};
+ dcmd[0] = cmd;
+ memcpy(dcmd+1,data,2);
+ AppendCrc14443a(dcmd, 3);
+
+ ReaderTransmit(dcmd, sizeof(dcmd), NULL);
+ int len = ReaderReceive(answer, answer_parity);
+ if(!len) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR)
+ Dbprintf("Authentication failed. Card timeout.");
+ return 1;
+ }
+ return len;
+}
+
+int mifare_sendcmd_special2(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd, uint8_t* data, uint8_t* answer,uint8_t *answer_parity, uint32_t *timing)
+{
+ uint8_t dcmd[20] = {0x00};
+ dcmd[0] = cmd;
+ memcpy(dcmd+1,data,17);
+ AppendCrc14443a(dcmd, 18);
+
+ ReaderTransmit(dcmd, sizeof(dcmd), NULL);
+ int len = ReaderReceive(answer, answer_parity);
+ if(!len){
+ if (MF_DBGLEVEL >= MF_DBG_ERROR)
+ Dbprintf("Authentication failed. Card timeout.");
+ return 1;
+ }
+ return len;
+}
+
+int mifare_desfire_des_auth1(uint32_t uid, uint8_t *blockData){
+
+ int len;
+ // load key, keynumber
+ uint8_t data[2]={0x0a, 0x00};
+ uint8_t receivedAnswer[MAX_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_PARITY_SIZE];
+
+ len = mifare_sendcmd_special(NULL, 1, 0x02, data, receivedAnswer,receivedAnswerPar,NULL);
+ if (len == 1) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR)
+ Dbprintf("Cmd Error: %02x", receivedAnswer[0]);
+ return 1;
+ }
+
+ if (len == 12) {
+ if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
+ Dbprintf("Auth1 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+ receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
+ receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
+ receivedAnswer[10],receivedAnswer[11]);
+ }
+ memcpy(blockData, receivedAnswer, 12);
+ return 0;
+ }
+ return 1;
+}
+
+int mifare_desfire_des_auth2(uint32_t uid, uint8_t *key, uint8_t *blockData){
+
+ int len;
+ uint8_t data[17] = {0x00};
+ data[0] = 0xAF;
+ memcpy(data+1,key,16);
+
+ uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+
+ len = mifare_sendcmd_special2(NULL, 1, 0x03, data, receivedAnswer, receivedAnswerPar ,NULL);
+
+ if ((receivedAnswer[0] == 0x03) && (receivedAnswer[1] == 0xae)) {
+ if (MF_DBGLEVEL >= MF_DBG_ERROR)
+ Dbprintf("Auth Error: %02x %02x", receivedAnswer[0], receivedAnswer[1]);
+ return 1;
+ }
+
+ if (len == 12){
+ if (MF_DBGLEVEL >= MF_DBG_EXTENDED) {
+ Dbprintf("Auth2 Resp: %02x%02x%02x%02x%02x%02x%02x%02x%02x%02x",
+ receivedAnswer[0],receivedAnswer[1],receivedAnswer[2],receivedAnswer[3],receivedAnswer[4],
+ receivedAnswer[5],receivedAnswer[6],receivedAnswer[7],receivedAnswer[8],receivedAnswer[9],
+ receivedAnswer[10],receivedAnswer[11]);
+ }
+ memcpy(blockData, receivedAnswer, 12);
+ return 0;
+ }
+ return 1;
+}
+
+//-----------------------------------------------------------------------------
+// MIFARE check keys
+//
+//-----------------------------------------------------------------------------
+// one key check
+static int MifareChkBlockKey(uint8_t *uid, uint32_t *cuid, uint8_t *cascade_levels, uint8_t *key, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel, bool fixed_nonce) {
+
+ struct Crypto1State mpcs = {0, 0};
+ struct Crypto1State *pcs;
+ pcs = &mpcs;
+
+ if (*cascade_levels == 0) { // need a full select cycle to get the uid first
+ iso14a_card_select_t card_info;
+ if (!iso14443a_select_card(uid, &card_info, cuid, true, 0, true)) {
+ if (debugLevel >= 1) Dbprintf("ChkKeys: Can't select card");
+ return -1;
+ }
+ switch (card_info.uidlen) {
+ case 4 : *cascade_levels = 1; break;
+ case 7 : *cascade_levels = 2; break;
+ case 10: *cascade_levels = 3; break;
+ default: break;
+ }
+ } else { // no need for anticollision. We can directly select the card
+ if (!iso14443a_select_card(uid, NULL, NULL, false, *cascade_levels, true)) {
+ if (debugLevel >= 1) Dbprintf("ChkKeys: Can't select card (UID) lvl=%d", *cascade_levels);
+ return -1;
+ }
+ }
+
+ if (!fixed_nonce) {
+ uint64_t ui64Key = bytes_to_num(key, 6);
+ if (mifare_classic_auth(pcs, *cuid, blockNo, keyType, ui64Key, AUTH_FIRST, auth_timeout)) { // authentication failed
+ return -2;
+ } else {
+ mifare_classic_halt(pcs, *cuid);
+ }
+ } else {
+ uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];
+ uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];
+ // Transmit MIFARE_CLASSIC_AUTH
+ int len = mifare_sendcmd_short(pcs, false, keyType & 0x01 ? MIFARE_AUTH_KEYB : MIFARE_AUTH_KEYA, blockNo, receivedAnswer, receivedAnswerPar, NULL);
+ if (len != 4) return -2;
+ // Transmit encrypted reader nonce and reader answer
+ uint8_t mf_nr_ar[8] = NESTED_FIXED_NR_ENC;
+ memcpy(mf_nr_ar + 4, key, 4);
+ ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), key + 4, NULL);
+ uint32_t save_timeout = iso14a_get_timeout(); // save standard timeout
+ iso14a_set_timeout(*auth_timeout); // set timeout for authentication response
+ len = ReaderReceive(receivedAnswer, receivedAnswerPar);
+ iso14a_set_timeout(save_timeout); // restore standard timeout
+ if (!len) return -2;
+ }
+
+ return 0; // success
+}
+
+// multi key check
+static int MifareChkBlockKeysEx(uint8_t *keys, uint8_t keyCount, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel, bool fixed_nonce) {
+
+ uint8_t uid[10];
+ uint32_t cuid = 0;
+ uint8_t cascade_levels = 0;
+
+ int retryCount = 0;
+ for (uint8_t i = 0; i < keyCount; i++) {
+ uint8_t bytes_per_key = fixed_nonce ? 5 : 6;
+ int res = MifareChkBlockKey(uid, &cuid, &cascade_levels, keys + i*bytes_per_key, blockNo, keyType, auth_timeout, debugLevel, fixed_nonce);
+ if (res == -1) { // couldn't select
+ retryCount++;
+ if (retryCount >= 5) {
+ Dbprintf("ChkKeys: block=%d key=%d. Couldn't select. Exit...", blockNo, keyType);
+ return -1;
+ } else {
+ --i; // try the same key once again
+ SpinDelay(20);
+ // Dbprintf("ChkKeys: block=%d key=%d. Try the same key once again...", blockNo, keyType);
+ continue;
+ }
+ }
+ if (res == -2) { // couldn't authenticate with this key
+ retryCount = 0;
+ continue;
+ }
+
+ return i + 1; // successful authentication
+
+ }
+
+ if (BUTTON_PRESS()) {
+ return -2;
+ }
+
+ return 0; // couldn't authenticate with any key
+}
+
+
+int MifareChkBlockKeys(uint8_t *keys, uint8_t keyCount, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel) {
+ return MifareChkBlockKeysEx(keys, keyCount, blockNo, keyType, auth_timeout, debugLevel, false);
+}
+
+
+// fixed nonce check
+int MifareChkBlockKeysFixedNonce(uint8_t *ar_par, uint8_t ar_par_cnt, uint8_t blockNo, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel) {
+ return MifareChkBlockKeysEx(ar_par, ar_par_cnt, blockNo, keyType, auth_timeout, debugLevel, true);
+}
+
+
+// multisector multikey check
+int MifareMultisectorChk(uint8_t *keys, uint8_t keyCount, uint8_t SectorCount, uint8_t keyType, uint32_t *auth_timeout, uint8_t debugLevel, TKeyIndex *keyIndex) {
+ int res = 0;
+
+// int clk = GetCountSspClk();
+
+ for(int sc = 0; sc < SectorCount; sc++){
+ WDT_HIT();
+
+ int keyAB = keyType;
+ do {
+ res = MifareChkBlockKeys(keys, keyCount, FirstBlockOfSector(sc), keyAB & 0x01, auth_timeout, debugLevel);
+ if (res < 0) {
+ return res;
+ }
+ if (res > 0) {
+ (*keyIndex)[keyAB & 0x01][sc] = res;
+ }
+ } while(--keyAB > 0);
+ }
+
+// Dbprintf("%d %d", GetCountSspClk() - clk, (GetCountSspClk() - clk)/(SectorCount*keyCount*(keyType==2?2:1)));
+
+ return 1;
+}
+
+