CHG: removed unused variable

[proxmark3-svn] / client / cmdhfmf.c

diff --git a/client/cmdhfmf.c b/client/cmdhfmf.c
index 99a91ced7a8418e95665ffdc6eae7dc218cffae7..7114945d6744906fedd8455e1e9a3dc5e12ba0fa 100644 (file)
--- a/client/cmdhfmf.c
+++ b/client/cmdhfmf.c
@@ -32,6 +32,7 @@ int usage_hf14_mf1ksim(void){
        PrintAndLog("      i    (Optional) Interactive, means that console will not be returned until simulation finishes or is aborted");\r
        PrintAndLog("      x    (Optional) Crack, performs the 'reader attack', nr/ar attack against a legitimate reader, fishes out the key(s)");\r
        PrintAndLog("      e    (Optional) Fill simulator keys from what we crack");\r
+       PrintAndLog("      v    (Optional) Show maths used for cracking reader. Useful for debugging.");\r
        PrintAndLog("samples:");\r
        PrintAndLog("           hf mf sim u 0a0a0a0a");\r
        PrintAndLog("           hf mf sim u 11223344556677");\r
@@ -213,14 +214,14 @@ start:
                }\r
        }       \r
        printf("\n");\r
+       // error\r
+       if (isOK != 1) return 1;\r
        \r
-       // par == 0,  and -4\r
-       if (isOK == -4 && par_list == 0) {\r
+       if (par_list == 0 && ks_list != 0) {\r
                // this special attack when parities is zero, uses checkkeys. Which now with block/keytype option also needs. \r
                // but it uses 0|1 instead of 0x60|0x61...\r
                if (nonce2key_ex(blockNo, keytype - 0x60 , uid, nt, nr, ks_list, &r_key) ){\r
-                       PrintAndLog("Key not found (lfsr_common_prefix list is null).");        \r
-                       PrintAndLog("Failing is expected to happen in 25%% of all cases. Trying again with a different reader nonce...");\r
+                       PrintAndLog("Trying again with a different reader nonce...");\r
                        c.arg[0] = false;\r
                        goto start;\r
                } else {\r
@@ -228,10 +229,7 @@ start:
                        goto END;\r
                }\r
        }\r
-       \r
-       // error\r
-       if (isOK != 1) return 1;\r
-       \r
+\r
        // execute original function from util nonce2key\r
        if (nonce2key(uid, nt, nr, par_list, ks_list, &r_key)) {\r
                isOK = 2;\r
@@ -1364,7 +1362,7 @@ int CmdHF14AMfChk(const char *Cmd) {
 #define ATTACK_KEY_COUNT 8\r
 sector *k_sector = NULL;\r
 uint8_t k_sectorsCount = 16;\r
-void readerAttack(nonces_t data[], bool setEmulatorMem) {\r
+void readerAttack(nonces_t data[], bool setEmulatorMem, bool verbose) {\r
 \r
        // initialize storage for found keys\r
        if (k_sector == NULL)\r
@@ -1388,7 +1386,7 @@ void readerAttack(nonces_t data[], bool setEmulatorMem) {
 \r
                        // We can probably skip this, mfkey32v2 is more reliable.\r
 #ifdef HFMF_TRYMFK32\r
-                       if (tryMfk32(data[i], &key)) {\r
+                       if (tryMfk32(data[i], &key, verbose)) {\r
                                PrintAndLog("Found Key%s for sector %02d: [%012"llx"]"\r
                                        , (data[i].keytype) ? "B" : "A"\r
                                        , data[i].sector\r
@@ -1413,7 +1411,7 @@ void readerAttack(nonces_t data[], bool setEmulatorMem) {
                        }\r
 #endif\r
                        //moebius attack                        \r
-                       if (tryMfk32_moebius(data[i+ATTACK_KEY_COUNT], &key)) {\r
+                       if (tryMfk32_moebius(data[i+ATTACK_KEY_COUNT], &key, verbose)) {\r
                                uint8_t sectorNum = data[i+ATTACK_KEY_COUNT].sector;\r
                                uint8_t keyType = data[i+ATTACK_KEY_COUNT].keytype;\r
 \r
@@ -1449,11 +1447,14 @@ int CmdHF14AMf1kSim(const char *Cmd) {
        uint8_t uid[10] = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0};\r
        uint8_t exitAfterNReads = 0;\r
        uint8_t flags = (FLAG_UID_IN_EMUL | FLAG_4B_UID_IN_DATA);\r
-       int uidlen = 0; \r
+       int uidlen = 0;\r
        bool setEmulatorMem = false;\r
        uint8_t cmdp = 0;\r
        bool errors = false;\r
 \r
+       // If set to true, we should show our workings when doing NR_AR_ATTACK.\r
+       bool verbose = false;\r
+\r
        while(param_getchar(Cmd, cmdp) != 0x00) {\r
                switch(param_getchar(Cmd, cmdp)) {\r
                case 'e':\r
@@ -1485,6 +1486,11 @@ int CmdHF14AMf1kSim(const char *Cmd) {
                        }\r
                        cmdp +=2;\r
                        break;\r
+               case 'v':\r
+               case 'V':\r
+                       verbose = true;\r
+                       cmdp++;\r
+                       break;\r
                case 'x':\r
                case 'X':\r
                        flags |= FLAG_NR_AR_ATTACK;\r
@@ -1524,7 +1530,7 @@ int CmdHF14AMf1kSim(const char *Cmd) {
                        if ( (resp.arg[0] & 0xffff) != CMD_SIMULATE_MIFARE_CARD ) break;\r
 \r
                        memcpy( data, resp.d.asBytes, sizeof(data) );                   \r
-                       readerAttack(data, setEmulatorMem);\r
+                       readerAttack(data, setEmulatorMem, verbose);\r
                }\r
                \r
                if (k_sector != NULL) {\r