From: roel@libnfc.org Date: Thu, 7 Mar 2013 12:23:31 +0000 (+0000) Subject: added all files for mfkeys X-Git-Tag: v1.0.0~130^2 X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/cda056bb9e8a6b6345cbd1a4034b71f3e3dcd527?ds=inline;hp=17331e14ee99bebaef8d84fba44a90818bc5c817 added all files for mfkeys --- diff --git a/tools/mfkey/mfkey.c b/tools/mfkey/mfkey.c deleted file mode 100755 index 71e35589..00000000 --- a/tools/mfkey/mfkey.c +++ /dev/null @@ -1,66 +0,0 @@ -// Test-file: test2.c -#include "crapto1.h" -#include - -int main (int argc, char *argv[]) { - struct Crypto1State *revstate; - uint64_t lfsr; - uint8_t* plfsr = (uint8_t*)&lfsr; - uint32_t uid; // serial number - uint32_t nt; // tag challenge - uint32_t nr_enc; // encrypted reader challenge - uint32_t ar_enc; // encrypted reader response - uint32_t at_enc; // encrypted tag response - uint32_t ks2; // keystream used to encrypt reader response - uint32_t ks3; // keystream used to encrypt tag response - - printf("MIFARE Classic key recovery\n\n"); - - if (argc < 6) { - printf(" syntax: %s <{nr}> <{ar}> <{at}>\n\n",argv[0]); - return 1; - } - - sscanf(argv[1],"%x",&uid); - sscanf(argv[2],"%x",&nt); - sscanf(argv[3],"%x",&nr_enc); - sscanf(argv[4],"%x",&ar_enc); - sscanf(argv[5],"%x",&at_enc); - - printf("Recovering key for:\n"); - printf(" uid: %08x\n",uid); - printf(" nt: %08x\n",nt); - printf(" {nr}: %08x\n",nr_enc); - printf(" {ar}: %08x\n",ar_enc); - printf(" {at}: %08x\n",at_enc); - -/* - uint32_t uid = 0x9c599b32; - uint32_t tag_challenge = 0x82a4166c; - uint32_t nr_enc = 0xa1e458ce; - uint32_t reader_response = 0x6eea41e0; - uint32_t tag_response = 0x5cadf439; -*/ - // Generate lfsr succesors of the tag challenge - printf("\nLFSR succesors of the tag challenge:\n"); - printf(" nt': %08x\n",prng_successor(nt, 64)); - printf(" nt'': %08x\n",prng_successor(nt, 96)); - - // Extract the keystream from the messages - printf("\nKeystream used to generate {ar} and {at}:\n"); - ks2 = ar_enc ^ prng_successor(nt, 64); - ks3 = at_enc ^ prng_successor(nt, 96); - printf(" ks2: %08x\n",ks2); - printf(" ks3: %08x\n",ks3); - - revstate = lfsr_recovery64(ks2, ks3); - lfsr_rollback_word(revstate, 0, 0); - lfsr_rollback_word(revstate, 0, 0); - lfsr_rollback_word(revstate, nr_enc, 1); - lfsr_rollback_word(revstate, uid ^ nt, 0); - crypto1_get_lfsr(revstate, &lfsr); - printf("\nFound Key: [%02x %02x %02x %02x %02x %02x]\n\n",plfsr[5],plfsr[4],plfsr[3],plfsr[2],plfsr[1],plfsr[0]); - crypto1_destroy(revstate); - - return 0; -} diff --git a/tools/mfkey/mfkey32.c b/tools/mfkey/mfkey32.c new file mode 100755 index 00000000..0e64a3e8 --- /dev/null +++ b/tools/mfkey/mfkey32.c @@ -0,0 +1,72 @@ +#define __STDC_FORMAT_MACROS +#include +#define llx PRIx64 +#define lli PRIi64 + +// Test-file: test2.c +#include "crapto1.h" +#include +#include + +int main (int argc, char *argv[]) { + struct Crypto1State *s,*t; + uint64_t key; // recovered key + uint32_t uid; // serial number + uint32_t nt; // tag challenge + uint32_t nr0_enc; // first encrypted reader challenge + uint32_t ar0_enc; // first encrypted reader response + uint32_t nr1_enc; // second encrypted reader challenge + uint32_t ar1_enc; // second encrypted reader response + uint32_t ks2; // keystream used to encrypt reader response + + printf("MIFARE Classic key recovery - based 32 bits of keystream\n"); + printf("Recover key from two 32-bit reader authentication answers only!\n\n"); + + if (argc < 7) { + printf(" syntax: %s <{nr_0}> <{ar_0}> <{nr_1}> <{ar_1}>\n\n",argv[0]); + return 1; + } + + sscanf(argv[1],"%x",&uid); + sscanf(argv[2],"%x",&nt); + sscanf(argv[3],"%x",&nr0_enc); + sscanf(argv[4],"%x",&ar0_enc); + sscanf(argv[5],"%x",&nr1_enc); + sscanf(argv[6],"%x",&ar1_enc); + + printf("Recovering key for:\n"); + printf(" uid: %08x\n",uid); + printf(" nt: %08x\n",nt); + printf(" {nr_0}: %08x\n",nr0_enc); + printf(" {ar_0}: %08x\n",ar0_enc); + printf(" {nr_1}: %08x\n",nr1_enc); + printf(" {ar_1}: %08x\n",ar1_enc); + + // Generate lfsr succesors of the tag challenge + printf("\nLFSR succesors of the tag challenge:\n"); + printf(" nt': %08x\n",prng_successor(nt, 64)); + printf(" nt'': %08x\n",prng_successor(nt, 96)); + + // Extract the keystream from the messages + printf("\nKeystream used to generate {ar} and {at}:\n"); + ks2 = ar0_enc ^ prng_successor(nt, 64); + printf(" ks2: %08x\n",ks2); + + s = lfsr_recovery32(ar0_enc ^ prng_successor(nt, 64), 0); + + for(t = s; t->odd | t->even; ++t) { + lfsr_rollback_word(t, 0, 0); + lfsr_rollback_word(t, nr0_enc, 1); + lfsr_rollback_word(t, uid ^ nt, 0); + crypto1_get_lfsr(t, &key); + crypto1_word(t, uid ^ nt, 0); + crypto1_word(t, nr1_enc, 1); + if (ar1_enc == (crypto1_word(t, 0, 0) ^ prng_successor(nt, 64))) { + printf("\nFound Key: [%012"llx"]\n\n",key); + break; + } + } + free(s); + + return 0; +} diff --git a/tools/mfkey/mfkey64.c b/tools/mfkey/mfkey64.c new file mode 100755 index 00000000..448cb2ac --- /dev/null +++ b/tools/mfkey/mfkey64.c @@ -0,0 +1,71 @@ +#define __STDC_FORMAT_MACROS +#include +#define llx PRIx64 +#define lli PRIi64 + +// Test-file: test2.c +#include "crapto1.h" +#include + +int main (int argc, char *argv[]) { + struct Crypto1State *revstate; + uint64_t key; // recovered key + uint32_t uid; // serial number + uint32_t nt; // tag challenge + uint32_t nr_enc; // encrypted reader challenge + uint32_t ar_enc; // encrypted reader response + uint32_t at_enc; // encrypted tag response + uint32_t ks2; // keystream used to encrypt reader response + uint32_t ks3; // keystream used to encrypt tag response + + printf("MIFARE Classic key recovery - based 64 bits of keystream\n"); + printf("Recover key from only one complete authentication!\n\n"); + + if (argc < 6) { + printf(" syntax: %s <{nr}> <{ar}> <{at}>\n\n",argv[0]); + return 1; + } + + sscanf(argv[1],"%x",&uid); + sscanf(argv[2],"%x",&nt); + sscanf(argv[3],"%x",&nr_enc); + sscanf(argv[4],"%x",&ar_enc); + sscanf(argv[5],"%x",&at_enc); + + printf("Recovering key for:\n"); + printf(" uid: %08x\n",uid); + printf(" nt: %08x\n",nt); + printf(" {nr}: %08x\n",nr_enc); + printf(" {ar}: %08x\n",ar_enc); + printf(" {at}: %08x\n",at_enc); + +/* + uint32_t uid = 0x9c599b32; + uint32_t tag_challenge = 0x82a4166c; + uint32_t nr_enc = 0xa1e458ce; + uint32_t reader_response = 0x6eea41e0; + uint32_t tag_response = 0x5cadf439; +*/ + // Generate lfsr succesors of the tag challenge + printf("\nLFSR succesors of the tag challenge:\n"); + printf(" nt': %08x\n",prng_successor(nt, 64)); + printf(" nt'': %08x\n",prng_successor(nt, 96)); + + // Extract the keystream from the messages + printf("\nKeystream used to generate {ar} and {at}:\n"); + ks2 = ar_enc ^ prng_successor(nt, 64); + ks3 = at_enc ^ prng_successor(nt, 96); + printf(" ks2: %08x\n",ks2); + printf(" ks3: %08x\n",ks3); + + revstate = lfsr_recovery64(ks2, ks3); + lfsr_rollback_word(revstate, 0, 0); + lfsr_rollback_word(revstate, 0, 0); + lfsr_rollback_word(revstate, nr_enc, 1); + lfsr_rollback_word(revstate, uid ^ nt, 0); + crypto1_get_lfsr(revstate, &key); + printf("\nFound Key: [%012"llx"]\n\n",key); + crypto1_destroy(revstate); + + return 0; +}