CHG: minor change initializing array.

[proxmark3-svn] / armsrc / mifareutil.c

diff --git a/armsrc/mifareutil.c b/armsrc/mifareutil.c
index eab8a9308604a1a4ed86166ecd2c7a90f20bfab9..84477a2b046c29da292e3a8675da213c639c4324 100644 (file)
--- a/armsrc/mifareutil.c
+++ b/armsrc/mifareutil.c
@@ -18,6 +18,7 @@
 #include "iso14443a.h"\r
 #include "crapto1.h"\r
 #include "mifareutil.h"\r
+#include "parity.h"\r
 #include "des.h"\r
 \r
 int MF_DBGLEVEL = MF_DBG_ALL;\r
@@ -50,7 +51,7 @@ void mf_crypto1_encrypt(struct Crypto1State *pcs, uint8_t *data, uint16_t len, u
                data[i] = crypto1_byte(pcs, 0x00, 0) ^ data[i];\r
                if((i&0x0007) == 0) \r
                        par[i>>3] = 0;\r
-               par[i>>3] |= (((filter(pcs->odd) ^ oddparity(bt)) & 0x01)<<(7-(i&0x0007)));\r
+               par[i>>3] |= (((filter(pcs->odd) ^ oddparity8(bt)) & 0x01)<<(7-(i&0x0007)));\r
        }       \r
        return;\r
 }\r
@@ -99,7 +100,7 @@ int mifare_sendcmd_short(struct Crypto1State *pcs, uint8_t crypted, uint8_t cmd,
                for (pos = 0; pos < 4; pos++)\r
                {\r
                        ecmd[pos] = crypto1_byte(pcs, 0x00, 0) ^ dcmd[pos];\r
-                       par[0] |= (((filter(pcs->odd) ^ oddparity(dcmd[pos])) & 0x01) << (7-pos));\r
+                       par[0] |= (((filter(pcs->odd) ^ oddparity8(dcmd[pos])) & 0x01) << (7-pos));\r
                }       \r
 \r
                ReaderTransmitPar(ecmd, sizeof(ecmd), par, timing);\r
@@ -144,7 +145,11 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN
        uint32_t pos;\r
        uint8_t tmp4[4];\r
        uint8_t par[1] = {0x00};\r
-       byte_t nr[4];\r
+\r
+       // "random" reader nonce:\r
+       byte_t nr[4] = {0x55, 0x41, 0x49, 0x92};\r
+       //byte_t nr[4] = {0x01, 0x01, 0x01, 0x01};\r
+       \r
        uint32_t nt, ntpp; // Supplied tag nonce\r
        \r
        uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };\r
@@ -156,12 +161,6 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN
        if (MF_DBGLEVEL >= 4)   Dbprintf("rand tag nonce len: %x", len);  \r
        if (len != 4) return 1;\r
        \r
-       // "random" reader nonce:\r
-       nr[0] = 0x55;\r
-       nr[1] = 0x41;\r
-       nr[2] = 0x49;\r
-       nr[3] = 0x92; \r
-       \r
        // Save the tag nonce (nt)\r
        nt = bytes_to_num(receivedAnswer, 4);\r
 \r
@@ -193,7 +192,7 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN
        for (pos = 0; pos < 4; pos++)\r
        {\r
                mf_nr_ar[pos] = crypto1_byte(pcs, nr[pos], 0) ^ nr[pos];\r
-               par[0] |= (((filter(pcs->odd) ^ oddparity(nr[pos])) & 0x01) << (7-pos));\r
+               par[0] |= (((filter(pcs->odd) ^ oddparity8(nr[pos])) & 0x01) << (7-pos));\r
        }       \r
                \r
        // Skip 32 bits in pseudo random generator\r
@@ -204,7 +203,7 @@ int mifare_classic_authex(struct Crypto1State *pcs, uint32_t uid, uint8_t blockN
        {\r
                nt = prng_successor(nt,8);\r
                mf_nr_ar[pos] = crypto1_byte(pcs,0x00,0) ^ (nt & 0xff);\r
-               par[0] |= (((filter(pcs->odd) ^ oddparity(nt & 0xff)) & 0x01) << (7-pos));\r
+               par[0] |= (((filter(pcs->odd) ^ oddparity8(nt & 0xff)) & 0x01) << (7-pos));\r
        }       \r
                \r
        // Transmit reader nonce and reader answer\r
@@ -427,7 +426,7 @@ int mifare_classic_writeblock(struct Crypto1State *pcs, uint32_t uid, uint8_t bl
        for (pos = 0; pos < 18; pos++)\r
        {\r
                d_block_enc[pos] = crypto1_byte(pcs, 0x00, 0) ^ d_block[pos];\r
-               par[pos>>3] |= (((filter(pcs->odd) ^ oddparity(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));\r
+               par[pos>>3] |= (((filter(pcs->odd) ^ oddparity8(d_block[pos])) & 0x01) << (7 - (pos&0x0007)));\r
        }       \r
 \r
        ReaderTransmitPar(d_block_enc, sizeof(d_block_enc), par, NULL);\r
@@ -501,22 +500,21 @@ int mifare_ultra_writeblock(uint8_t blockNo, uint8_t *blockData)
     }\r
     return 0;\r
 }\r
-\r
-int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) \r
-{\r
+int mifare_classic_halt_ex(struct Crypto1State *pcs) {\r
        uint16_t len;   \r
-       uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];\r
-       uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];\r
+       uint8_t receivedAnswer[4];\r
+       uint8_t receivedAnswerPar[4];\r
 \r
        len = mifare_sendcmd_short(pcs, pcs == NULL ? false:true, 0x50, 0x00, receivedAnswer, receivedAnswerPar, NULL);\r
        if (len != 0) {\r
-               if (MF_DBGLEVEL >= MF_DBG_ERROR)\r
-                       Dbprintf("halt error. response len: %x", len);  \r
+               if (MF_DBGLEVEL >= MF_DBG_ERROR) Dbprintf("halt error. response len: %x", len);  \r
                return 1;\r
        }\r
-\r
        return 0;\r
 }\r
+int mifare_classic_halt(struct Crypto1State *pcs, uint32_t uid) {\r
+       return mifare_classic_halt_ex(pcs);\r
+}\r
 \r
 int mifare_ultra_halt()\r
 {\r