X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/3d057cfb918fb7e296cd27d6ced98008ea967753..fdd9395d1a0f331f9cc74d6cdd6dd71447524e6c:/client/mfkey.c?ds=inline diff --git a/client/mfkey.c b/client/mfkey.c deleted file mode 100644 index 0c72a37c..00000000 --- a/client/mfkey.c +++ /dev/null @@ -1,122 +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 -//----------------------------------------------------------------------------- - -#include "mfkey.h" - -#include "mifare.h" -#include "crapto1/crapto1.h" - - -// recover key from 2 different reader responses on same tag challenge -bool mfkey32(nonces_t data, uint64_t *outputkey) { - struct Crypto1State *s,*t; - uint64_t outkey = 0; - uint64_t key = 0; // recovered key - bool isSuccess = false; - uint8_t counter = 0; - - s = lfsr_recovery32(data.ar ^ prng_successor(data.nonce, 64), 0); - - for(t = s; t->odd | t->even; ++t) { - lfsr_rollback_word(t, 0, 0); - lfsr_rollback_word(t, data.nr, 1); - lfsr_rollback_word(t, data.cuid ^ data.nonce, 0); - crypto1_get_lfsr(t, &key); - crypto1_word(t, data.cuid ^ data.nonce, 0); - crypto1_word(t, data.nr2, 1); - if (data.ar2 == (crypto1_word(t, 0, 0) ^ prng_successor(data.nonce, 64))) { - //PrintAndLog("Found Key: [%012" PRIx64 "]",key); - outkey = key; - counter++; - if (counter == 20) break; - } - } - isSuccess = (counter == 1); - *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; -} - -// recover key from 2 reader responses on 2 different tag challenges -bool mfkey32_moebius(nonces_t data, uint64_t *outputkey) { - struct Crypto1State *s, *t; - uint64_t outkey = 0; - uint64_t key = 0; // recovered key - bool isSuccess = false; - int counter = 0; - - s = lfsr_recovery32(data.ar ^ prng_successor(data.nonce, 64), 0); - - for(t = s; t->odd | t->even; ++t) { - lfsr_rollback_word(t, 0, 0); - lfsr_rollback_word(t, data.nr, 1); - lfsr_rollback_word(t, data.cuid ^ data.nonce, 0); - crypto1_get_lfsr(t, &key); - - crypto1_word(t, data.cuid ^ data.nonce2, 0); - crypto1_word(t, data.nr2, 1); - if (data.ar2 == (crypto1_word(t, 0, 0) ^ prng_successor(data.nonce2, 64))) { - //PrintAndLog("Found Key: [%012" PRIx64 "]",key); - outkey=key; - ++counter; - if (counter==20) - break; - } - } - isSuccess = (counter == 1); - *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; -} - -// recover key from reader response and tag response of one authentication sequence -int mfkey64(nonces_t data, 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; - - // Extract the keystream from the messages - ks2 = data.ar ^ prng_successor(data.nonce, 64); - ks3 = data.at ^ prng_successor(data.nonce, 96); - revstate = lfsr_recovery64(ks2, ks3); - lfsr_rollback_word(revstate, 0, 0); - lfsr_rollback_word(revstate, 0, 0); - lfsr_rollback_word(revstate, data.nr, 1); - lfsr_rollback_word(revstate, data.cuid ^ data.nonce, 0); - crypto1_get_lfsr(revstate, &key); - // PrintAndLog("Found Key: [%012" PRIx64 "]", key); - crypto1_destroy(revstate); - *outputkey = key; - - return 0; -} - -