X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/ef3f88bca9fbf8f228781f7e7b41fb6435130d84..7779d73c71c248e05574b85f82df4e4f543d522e:/client/nonce2key/nonce2key.c diff --git a/client/nonce2key/nonce2key.c b/client/nonce2key/nonce2key.c deleted file mode 100644 index 5647c424..00000000 --- a/client/nonce2key/nonce2key.c +++ /dev/null @@ -1,288 +0,0 @@ -//----------------------------------------------------------------------------- -// Merlok - June 2011 -// Roel - Dec 2009 -// Unknown author -// -// 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. -//----------------------------------------------------------------------------- -// MIFARE Darkside hack -//----------------------------------------------------------------------------- - -#define __STDC_FORMAT_MACROS -#include -#define llx PRIx64 - -#include "nonce2key.h" -#include "mifarehost.h" -#include "ui.h" - -int compar_state(const void * a, const void * b) { - // didn't work: (the result is truncated to 32 bits) - //return (*(int64_t*)b - *(int64_t*)a); - - // better: - if (*(int64_t*)b == *(int64_t*)a) return 0; - else if (*(int64_t*)b > *(int64_t*)a) return 1; - else return -1; -} - -int nonce2key(uint32_t uid, uint32_t nt, uint32_t nr, uint64_t par_info, uint64_t ks_info, uint64_t * key) { - struct Crypto1State *state; - uint32_t i, pos, rr, nr_diff, key_count;//, ks1, ks2; - byte_t bt, ks3x[8], par[8][8]; - uint64_t key_recovered; - int64_t *state_s; - static uint32_t last_uid; - static int64_t *last_keylist; - rr = 0; - - if (last_uid != uid && last_keylist != NULL) - { - free(last_keylist); - last_keylist = NULL; - } - last_uid = uid; - - // Reset the last three significant bits of the reader nonce - nr &= 0xffffff1f; - - PrintAndLog("\nuid(%08x) nt(%08x) par(%016"llx") ks(%016"llx") nr(%08"llx")\n\n",uid,nt,par_info,ks_info,nr); - - for (pos=0; pos<8; pos++) - { - ks3x[7-pos] = (ks_info >> (pos*8)) & 0x0f; - bt = (par_info >> (pos*8)) & 0xff; - for (i=0; i<8; i++) - { - par[7-pos][i] = (bt >> i) & 0x01; - } - } - - printf("|diff|{nr} |ks3|ks3^5|parity |\n"); - printf("+----+--------+---+-----+---------------+\n"); - for (i=0; i<8; i++) - { - nr_diff = nr | i << 5; - printf("| %02x |%08x|",i << 5, nr_diff); - printf(" %01x | %01x |",ks3x[i], ks3x[i]^5); - for (pos=0; pos<7; pos++) printf("%01x,", par[i][pos]); - printf("%01x|\n", par[i][7]); - } - - if (par_info==0) - PrintAndLog("parity is all zero,try special attack!just wait for few more seconds..."); - - state = lfsr_common_prefix(nr, rr, ks3x, par, par_info==0); - state_s = (int64_t*)state; - - //char filename[50] ; - //sprintf(filename, "nt_%08x_%d.txt", nt, nr); - //printf("name %s\n", filename); - //FILE* fp = fopen(filename,"w"); - for (i = 0; (state) && ((state + i)->odd != -1); i++) - { - lfsr_rollback_word(state+i, uid^nt, 0); - crypto1_get_lfsr(state + i, &key_recovered); - *(state_s + i) = key_recovered; - //fprintf(fp, "%012llx\n",key_recovered); - } - //fclose(fp); - - if(!state) - return 1; - - qsort(state_s, i, sizeof(*state_s), compar_state); - *(state_s + i) = -1; - - //Create the intersection: - if (par_info == 0 ) - if ( last_keylist != NULL) - { - int64_t *p1, *p2, *p3; - p1 = p3 = last_keylist; - p2 = state_s; - while ( *p1 != -1 && *p2 != -1 ) { - if (compar_state(p1, p2) == 0) { - printf("p1:%"llx" p2:%"llx" p3:%"llx" key:%012"llx"\n",(uint64_t)(p1-last_keylist),(uint64_t)(p2-state_s),(uint64_t)(p3-last_keylist),*p1); - *p3++ = *p1++; - p2++; - } - else { - while (compar_state(p1, p2) == -1) ++p1; - while (compar_state(p1, p2) == 1) ++p2; - } - } - key_count = p3 - last_keylist;; - } - else - key_count = 0; - else - { - last_keylist = state_s; - key_count = i; - } - - printf("key_count:%d\n", key_count); - - // The list may still contain several key candidates. Test each of them with mfCheckKeys - for (i = 0; i < key_count; i++) { - uint8_t keyBlock[6]; - uint64_t key64; - key64 = *(last_keylist + i); - num_to_bytes(key64, 6, keyBlock); - key64 = 0; - if (!mfCheckKeys(0, 0, false, 1, keyBlock, &key64)) { - *key = key64; - free(last_keylist); - last_keylist = NULL; - if (par_info ==0) - free(state); - return 0; - } - } - - - free(last_keylist); - last_keylist = state_s; - - return 1; -} - -// 32 bit recover key from 2 nonces -bool mfkey32(nonces_t data, uint64_t *outputkey) { - struct Crypto1State *s,*t; - uint64_t outkey = 0; - uint64_t key=0; // recovered key - uint32_t uid = data.cuid; - uint32_t nt = data.nonce; // first tag challenge (nonce) - uint32_t nr0_enc = data.nr; // first encrypted reader challenge - uint32_t ar0_enc = data.ar; // first encrypted reader response - uint32_t nr1_enc = data.nr2; // second encrypted reader challenge - uint32_t ar1_enc = data.ar2; // second encrypted reader response - clock_t t1 = clock(); - bool isSuccess = FALSE; - uint8_t counter=0; - - 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))) { - //PrintAndLog("Found Key: [%012"llx"]",key); - outkey = key; - counter++; - if (counter==20) break; - } - } - isSuccess = (counter == 1); - t1 = clock() - t1; - //if ( t1 > 0 ) PrintAndLog("Time in mfkey32: %.0f ticks \nFound %d possible keys", (float)t1, counter); - *outputkey = ( isSuccess ) ? outkey : 0; - crypto1_destroy(s); - /* //un-comment to save all keys to a stats.txt file - FILE *fout; - if ((fout = fopen("stats.txt","ab")) == NULL) { - PrintAndLog("Could not create file name stats.txt"); - return 1; - } - fprintf(fout, "mfkey32,%d,%08x,%d,%s,%04x%08x,%.0Lf\r\n", counter, data.cuid, data.sector, (data.keytype) ? "B" : "A", (uint32_t)(outkey>>32) & 0xFFFF,(uint32_t)(outkey&0xFFFFFFFF),(long double)t1); - fclose(fout); - */ - return isSuccess; -} - -bool tryMfk32_moebius(nonces_t data, uint64_t *outputkey) { - struct Crypto1State *s, *t; - uint64_t outkey = 0; - uint64_t key = 0; // recovered key - uint32_t uid = data.cuid; - uint32_t nt0 = data.nonce; // first tag challenge (nonce) - uint32_t nr0_enc = data.nr; // first encrypted reader challenge - uint32_t ar0_enc = data.ar; // first encrypted reader response - uint32_t nt1 = data.nonce2; // second tag challenge (nonce) - uint32_t nr1_enc = data.nr2; // second encrypted reader challenge - uint32_t ar1_enc = data.ar2; // second encrypted reader response - bool isSuccess = FALSE; - int counter = 0; - - //PrintAndLog("Enter mfkey32_moebius"); - clock_t t1 = clock(); - - s = lfsr_recovery32(ar0_enc ^ prng_successor(nt0, 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 ^ nt0, 0); - crypto1_get_lfsr(t, &key); - - crypto1_word(t, uid ^ nt1, 0); - crypto1_word(t, nr1_enc, 1); - if (ar1_enc == (crypto1_word(t, 0, 0) ^ prng_successor(nt1, 64))) { - //PrintAndLog("Found Key: [%012"llx"]",key); - outkey=key; - ++counter; - if (counter==20) - break; - } - } - isSuccess = (counter == 1); - t1 = clock() - t1; - //if ( t1 > 0 ) PrintAndLog("Time in mfkey32_moebius: %.0f ticks \nFound %d possible keys", (float)t1,counter); - *outputkey = ( isSuccess ) ? outkey : 0; - crypto1_destroy(s); - /* // un-comment to output all keys to stats.txt - FILE *fout; - if ((fout = fopen("stats.txt","ab")) == NULL) { - PrintAndLog("Could not create file name stats.txt"); - return 1; - } - fprintf(fout, "moebius,%d,%08x,%d,%s,%04x%08x,%0.Lf\r\n", counter, data.cuid, data.sector, (data.keytype) ? "B" : "A", (uint32_t) (outkey>>32),(uint32_t)(outkey&0xFFFFFFFF),(long double)t1); - fclose(fout); - */ - return isSuccess; -} - -int tryMfk64_ex(uint8_t *data, uint64_t *outputkey){ - uint32_t uid = le32toh(data); - uint32_t nt = le32toh(data+4); // tag challenge - uint32_t nr_enc = le32toh(data+8); // encrypted reader challenge - uint32_t ar_enc = le32toh(data+12); // encrypted reader response - uint32_t at_enc = le32toh(data+16); // encrypted tag response - return tryMfk64(uid, nt, nr_enc, ar_enc, at_enc, outputkey); -} - -int tryMfk64(uint32_t uid, uint32_t nt, uint32_t nr_enc, uint32_t ar_enc, uint32_t at_enc, uint64_t *outputkey){ - uint64_t key = 0; // recovered key - uint32_t ks2; // keystream used to encrypt reader response - uint32_t ks3; // keystream used to encrypt tag response - struct Crypto1State *revstate; - - PrintAndLog("Enter mfkey64"); - clock_t t1 = clock(); - - // Extract the keystream from the messages - ks2 = ar_enc ^ prng_successor(nt, 64); - ks3 = at_enc ^ prng_successor(nt, 96); - 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); - PrintAndLog("Found Key: [%012"llx"]", key); - crypto1_destroy(revstate); - *outputkey = key; - - t1 = clock() - t1; - if ( t1 > 0 ) PrintAndLog("Time in mfkey64: %.0f ticks \n", (float)t1); - return 0; -} -