mirror of
https://github.com/Proxmark/proxmark3.git
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Deduplicate mfkey32 and mfkey64
- rename client/nonce2key.[ch] to mfkey.[ch] - leave only main() wrapper in tools/mfkey - add mfkey32 and mfkey64 to .gitignore
This commit is contained in:
pwpiwi
parent
bd2797de15
commit
4cb4b588c2
8
.gitignore
vendored
8
.gitignore
vendored
@ -14,14 +14,16 @@
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*.dll
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*.moc.cpp
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*.z
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version.c
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*.exe
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proxmark
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proxmark3
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flasher
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version.c
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lua
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luac
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fpga_compress
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mfkey32
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mfkey64
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fpga/*
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!fpga/tests
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@ -34,5 +36,3 @@ fpga/*
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!fpga/xst_hf.scr
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!fpga/go.bat
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!fpga/sim.tcl
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@ -58,7 +58,7 @@ CORESRCS = uart.c \
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CMDSRCS = crapto1/crapto1.c\
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crapto1/crypto1.c\
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nonce2key.c\
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mfkey.c\
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loclass/cipher.c \
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loclass/cipherutils.c \
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loclass/des.c \
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@ -19,7 +19,7 @@
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#include "ui.h"
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#include "mifarehost.h"
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#include "mifare.h"
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#include "nonce2key.h"
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#include "mfkey.h"
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#define NESTED_SECTOR_RETRY 10 // how often we try mfested() until we give up
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@ -10,15 +10,11 @@
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// MIFARE Darkside hack
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//-----------------------------------------------------------------------------
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#include "nonce2key.h"
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#include "mfkey.h"
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#include <inttypes.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "mifarehost.h"
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#include "util.h"
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#include "crapto1/crapto1.h"
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// recover key from 2 different reader responses on same tag challenge
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bool mfkey32(nonces_t data, uint64_t *outputkey) {
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struct Crypto1State *s,*t;
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@ -27,8 +23,6 @@ bool mfkey32(nonces_t data, uint64_t *outputkey) {
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bool isSuccess = false;
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uint8_t counter = 0;
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uint64_t t1 = msclock();
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s = lfsr_recovery32(data.ar ^ prng_successor(data.nonce, 64), 0);
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for(t = s; t->odd | t->even; ++t) {
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@ -46,8 +40,6 @@ bool mfkey32(nonces_t data, uint64_t *outputkey) {
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}
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}
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isSuccess = (counter == 1);
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t1 = msclock() - t1;
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//if ( t1 > 0 ) PrintAndLog("Time in mfkey32: %.1f seconds \nFound %d possible keys", (float)t1/1000.0, counter);
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*outputkey = ( isSuccess ) ? outkey : 0;
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crypto1_destroy(s);
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/* //un-comment to save all keys to a stats.txt file
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@ -70,9 +62,6 @@ bool mfkey32_moebius(nonces_t data, uint64_t *outputkey) {
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bool isSuccess = false;
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int counter = 0;
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//PrintAndLog("Enter mfkey32_moebius");
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uint64_t t1 = msclock();
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s = lfsr_recovery32(data.ar ^ prng_successor(data.nonce, 64), 0);
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for(t = s; t->odd | t->even; ++t) {
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@ -92,8 +81,6 @@ bool mfkey32_moebius(nonces_t data, uint64_t *outputkey) {
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}
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}
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isSuccess = (counter == 1);
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t1 = msclock() - t1;
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// PrintAndLog("Time in mfkey32_moebius: %.1f seconds \nFound %d possible keys", (float)t1/1000.0, counter);
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*outputkey = ( isSuccess ) ? outkey : 0;
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crypto1_destroy(s);
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/* // un-comment to output all keys to stats.txt
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@ -115,9 +102,6 @@ int mfkey64(nonces_t data, uint64_t *outputkey){
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uint32_t ks3; // keystream used to encrypt tag response
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struct Crypto1State *revstate;
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// PrintAndLog("Enter mfkey64");
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uint64_t t1 = msclock();
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// Extract the keystream from the messages
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ks2 = data.ar ^ prng_successor(data.nonce, 64);
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ks3 = data.at ^ prng_successor(data.nonce, 96);
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@ -131,7 +115,7 @@ int mfkey64(nonces_t data, uint64_t *outputkey){
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crypto1_destroy(revstate);
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*outputkey = key;
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t1 = msclock() - t1;
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// PrintAndLog("Time in mfkey64: %.1f seconds \n", (float)t1/1000.0);
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return 0;
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}
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@ -10,8 +10,8 @@
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// MIFARE Darkside hack
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//-----------------------------------------------------------------------------
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#ifndef __NONCE2KEY_H
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#define __NONCE2KEY_H
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#ifndef MFKEY_H
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#define MFKEY_H
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#include <stdint.h>
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#include <stdbool.h>
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@ -29,8 +29,8 @@ typedef struct {
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uint32_t nr2;
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} nonces_t;
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bool mfkey32(nonces_t data, uint64_t *outputkey);
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bool mfkey32_moebius(nonces_t data, uint64_t *outputkey);
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int mfkey64(nonces_t data, uint64_t *outputkey);
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extern bool mfkey32(nonces_t data, uint64_t *outputkey);
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extern bool mfkey32_moebius(nonces_t data, uint64_t *outputkey);
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extern int mfkey64(nonces_t data, uint64_t *outputkey);
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#endif
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@ -8,6 +8,8 @@
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// mifare commands
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//-----------------------------------------------------------------------------
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#include "mifarehost.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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@ -20,7 +22,6 @@
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#include "ui.h"
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#include "util.h"
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#include "iso14443crc.h"
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#include "mifarehost.h"
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// mifare tracer flags used in mfTraceDecode()
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#define TRACE_IDLE 0x00
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@ -8,6 +8,9 @@
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// High frequency ISO14443A commands
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//-----------------------------------------------------------------------------
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#ifndef MIFAREHOST_H
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#define MIFAREHOST_H
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#include <stdint.h>
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#include <stdbool.h>
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#include "data.h"
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@ -42,3 +45,5 @@ extern int isBlockTrailer(int blockN);
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extern int loadTraceCard(uint8_t *tuid);
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extern int saveTraceCard(void);
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extern int tryDecryptWord(uint32_t nt, uint32_t ar_enc, uint32_t at_enc, uint8_t *data, int len);
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#endif
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27
common/crapto1/readme
Normal file
27
common/crapto1/readme
Normal file
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CRAPTO1
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-------
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Provides a set of library functions which aid the verification
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of crypto1 weaknesses.
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In short a partial implementation of:
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Dismantling MIFARE Classic
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URL: http://www.sos.cs.ru.nl/applications/rfid/2008-esorics.pdf
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Flavio D. Garcia, Gerhard de Koning Gans, Ruben Muijrers,
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Peter van Rossum, Roel Verdult, Ronny Wichers Schreur, Bart Jacobs
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Institute for Computing and Information Sciences,
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Radboud University Nijmegen, The Netherlands
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{{flaviog,petervr,ronny,bart}@cs, {gkoningg,rmuijrer,rverdult}@sci}.ru.nl
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and
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Wirelessly Pickpocketing a Mifare Classic Card
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URL: http://www.cs.ru.nl/~flaviog/publications/Pickpocketing.Mifare.pdf
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Flavio D. Garcia, Peter van Rossum, Roel Verdult, Ronny Wichers Schreur
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Radboud University Nijmegen, The Netherlands
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{flaviog,petervr,rverdult,ronny}@cs.ru.nl
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and
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THE DARK SIDE OF SECURITY BY OBSCURITY
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URL: http://eprint.iacr.org/2009/137
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and Cloning MiFare Classic Rail and Building Passes, Anywhere, Anytime
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Nicolas T. Courtois
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University College London, Computer Science,
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Gower street, WC1E 6BT, London, UK
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@ -1,10 +1,10 @@
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VPATH = ../../common/crapto1
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VPATH = ../../common/crapto1 ../../client
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CC = gcc
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LD = gcc
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CFLAGS = -I../../common -Wall -O4
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CFLAGS = -I../../common -I../../client -Wall -O4
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LDFLAGS =
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OBJS = crypto1.o crapto1.o
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OBJS = crypto1.o crapto1.o util.o mfkey.o
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EXES = mfkey32 mfkey64
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WINEXES = $(patsubst %, %.exe, $(EXES))
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@ -13,7 +13,7 @@ all: $(OBJS) $(EXES)
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%.o : %.c
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$(CC) $(CFLAGS) -c -o $@ $<
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% : %.c
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% : %.c $(OBJS)
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$(CC) $(CFLAGS) $(LDFLAGS) -o $@ $(OBJS) $<
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clean:
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@ -1,67 +1,77 @@
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#include <inttypes.h>
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#include "crapto1/crapto1.h"
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "crapto1/crapto1.h"
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#include "mfkey.h"
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#include "util.h"
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// 32 bit recover key from 2 nonces
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#include <stdio.h>
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int main (int argc, char *argv[]) {
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struct Crypto1State *s,*t;
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uint64_t key; // recovered key
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uint32_t uid; // serial number
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uint32_t nt; // tag challenge
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uint32_t nr0_enc; // first encrypted reader challenge
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uint32_t ar0_enc; // first encrypted reader response
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uint32_t nr1_enc; // second encrypted reader challenge
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uint32_t ar1_enc; // second encrypted reader response
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uint32_t ks2; // keystream used to encrypt reader response
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printf("MIFARE Classic key recovery - based 32 bits of keystream\n");
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nonces_t data;
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uint32_t ks2; // keystream used to encrypt reader response
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uint64_t key; // recovered key
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printf("MIFARE Classic key recovery - based on 32 bits of keystream\n");
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printf("Recover key from two 32-bit reader authentication answers only!\n\n");
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if (argc < 7) {
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printf(" syntax: %s <uid> <nt> <{nr_0}> <{ar_0}> <{nr_1}> <{ar_1}>\n\n",argv[0]);
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if (argc != 7 && argc != 8) {
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printf(" syntax: %s <uid> <nt0> <{nr_0}> <{ar_0}> [<nt1>] <{nr_1}> <{ar_1}>\n", argv[0]);
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printf(" (you may omit nt1 if it is equal to nt0)\n\n");
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return 1;
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}
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sscanf(argv[1],"%x",&uid);
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sscanf(argv[2],"%x",&nt);
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sscanf(argv[3],"%x",&nr0_enc);
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sscanf(argv[4],"%x",&ar0_enc);
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sscanf(argv[5],"%x",&nr1_enc);
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sscanf(argv[6],"%x",&ar1_enc);
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bool moebius_attack = (argc == 8);
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sscanf(argv[1],"%x",&data.cuid);
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sscanf(argv[2],"%x",&data.nonce);
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data.nonce2 = data.nonce;
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sscanf(argv[3],"%x",&data.nr);
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sscanf(argv[4],"%x",&data.ar);
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if (moebius_attack) {
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sscanf(argv[5],"%x",&data.nonce2);
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sscanf(argv[6],"%x",&data.nr2);
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sscanf(argv[7],"%x",&data.ar2);
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} else {
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sscanf(argv[5],"%x",&data.nr2);
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sscanf(argv[6],"%x",&data.ar2);
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}
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printf("Recovering key for:\n");
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printf(" uid: %08x\n",uid);
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printf(" nt: %08x\n",nt);
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printf(" {nr_0}: %08x\n",nr0_enc);
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printf(" {ar_0}: %08x\n",ar0_enc);
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printf(" {nr_1}: %08x\n",nr1_enc);
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printf(" {ar_1}: %08x\n",ar1_enc);
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printf(" uid: %08x\n",data.cuid);
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printf(" nt0: %08x\n",data.nonce);
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printf(" {nr_0}: %08x\n",data.nr);
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printf(" {ar_0}: %08x\n",data.ar);
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printf(" nt1: %08x\n",data.nonce2);
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printf(" {nr_1}: %08x\n",data.nr2);
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printf(" {ar_1}: %08x\n",data.ar2);
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uint64_t start_time = msclock();
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// Generate lfsr succesors of the tag challenge
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printf("\nLFSR succesors of the tag challenge:\n");
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printf(" nt': %08x\n",prng_successor(nt, 64));
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printf(" nt'': %08x\n",prng_successor(nt, 96));
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printf(" nt': %08x\n",prng_successor(data.nonce, 64));
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printf(" nt'': %08x\n",prng_successor(data.nonce, 96));
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// Extract the keystream from the messages
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printf("\nKeystream used to generate {ar} and {at}:\n");
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ks2 = ar0_enc ^ prng_successor(nt, 64);
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ks2 = data.ar ^ prng_successor(data.nonce, 64);
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printf(" ks2: %08x\n",ks2);
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s = lfsr_recovery32(ar0_enc ^ prng_successor(nt, 64), 0);
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for(t = s; t->odd | t->even; ++t) {
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lfsr_rollback_word(t, 0, 0);
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lfsr_rollback_word(t, nr0_enc, 1);
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lfsr_rollback_word(t, uid ^ nt, 0);
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crypto1_get_lfsr(t, &key);
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crypto1_word(t, uid ^ nt, 0);
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crypto1_word(t, nr1_enc, 1);
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if (ar1_enc == (crypto1_word(t, 0, 0) ^ prng_successor(nt, 64))) {
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printf("\nFound Key: [%012" PRIx64 "]\n\n",key);
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break;
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}
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bool success;
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if (moebius_attack) {
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success = mfkey32_moebius(data, &key);
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} else {
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success = mfkey32(data, &key);
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}
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if (success) {
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printf("Recovered key: %012" PRIx64 "\n", key);
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} else {
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printf("Couldn't recover key.\n");
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}
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free(s);
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return 0;
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printf("Time spent: %1.2f seconds\n", (float)(msclock() - start_time)/1000.0);
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}
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@ -1,105 +1,101 @@
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#include <stdio.h>
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#include <strings.h>
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#include <inttypes.h>
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#include "crapto1/crapto1.h"
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#include <stdio.h>
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#include <string.h>
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#include "util.h"
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int main (int argc, char *argv[]) {
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struct Crypto1State *revstate;
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uint64_t key; // recovered key
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uint32_t uid; // serial number
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uint32_t nt; // tag challenge
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uint32_t nr_enc; // encrypted reader challenge
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uint32_t ar_enc; // encrypted reader response
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uint32_t at_enc; // encrypted tag response
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uint32_t ks2; // keystream used to encrypt reader response
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uint32_t ks3; // keystream used to encrypt tag response
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int main (int argc, char *argv[])
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{
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uint32_t uid; // serial numDber
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uint32_t nt; // tag challenge
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uint32_t nr_enc; // encrypted reader challenge
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uint32_t ar_enc; // encrypted reader response
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uint32_t at_enc; // encrypted tag response
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uint64_t key = 0; // recovered key
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struct Crypto1State *revstate;
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uint32_t ks2; // keystream used to encrypt reader response
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uint32_t ks3; // keystream used to encrypt tag response
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printf("MIFARE Classic key recovery - based 64 bits of keystream\n");
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printf("Recover key from only one complete authentication!\n\n");
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printf("MIFARE Classic key recovery - based on 64 bits of keystream\n");
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printf("Recover key from only one complete authentication!\n\n");
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if (argc < 6 ) {
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printf(" syntax: %s <uid> <nt> <{nr}> <{ar}> <{at}> [enc] [enc...]\n\n", argv[0]);
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return 1;
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}
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if (argc < 6 ) {
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printf(" syntax: %s <uid> <nt> <{nr}> <{ar}> <{at}> [enc] [enc...]\n\n", argv[0]);
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return 1;
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}
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int encc = argc - 6;
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int enclen[encc];
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uint8_t enc[encc][120];
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int encc = argc - 6;
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int enclen[encc];
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uint8_t enc[encc][120];
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sscanf(argv[1], "%x", &uid);
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sscanf(argv[2], "%x", &nt);
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sscanf(argv[3], "%x", &nr_enc);
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sscanf(argv[4], "%x", &ar_enc);
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sscanf(argv[5], "%x", &at_enc);
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for (int i = 0; i < encc; i++) {
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enclen[i] = strlen(argv[i + 6]) / 2;
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for (int i2 = 0; i2 < enclen[i]; i2++) {
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sscanf(argv[i+6] + i2*2,"%2x", (unsigned int *)&enc[i][i2]);
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}
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}
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printf("Recovering key for:\n");
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sscanf(argv[1], "%x", &uid);
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sscanf(argv[2], "%x", &nt);
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sscanf(argv[3], "%x", &nr_enc);
|
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sscanf(argv[4], "%x", &ar_enc);
|
||||
sscanf(argv[5], "%x", &at_enc);
|
||||
for (int i = 0; i < encc; i++) {
|
||||
enclen[i] = strlen(argv[i + 6]) / 2;
|
||||
for (int i2 = 0; i2 < enclen[i]; i2++) {
|
||||
sscanf(argv[i+6] + i2*2,"%2x", (unsigned int*)&enc[i][i2]);
|
||||
}
|
||||
}
|
||||
|
||||
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);
|
||||
for (int i = 0; i < encc; i++) {
|
||||
printf("{enc%d}: ", i);
|
||||
for (int i2 = 0; i2 < enclen[i]; i2++) {
|
||||
printf("%02x", enc[i][i2]);
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
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);
|
||||
for (int i = 0; i < encc; i++) {
|
||||
printf("{enc%d}: ", i);
|
||||
for (int i2 = 0; i2 < enclen[i]; i2++) {
|
||||
printf("%02x", enc[i][i2]);
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
|
||||
printf("\nLFSR successors of the tag challenge:\n");
|
||||
printf(" nt' : %08x\n",prng_successor(nt, 64));
|
||||
printf(" nt'': %08x\n",prng_successor(nt, 96));
|
||||
|
||||
/*
|
||||
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
|
||||
ks2 = ar_enc ^ prng_successor(nt, 64);
|
||||
ks3 = at_enc ^ prng_successor(nt, 96);
|
||||
|
||||
uint64_t start_time = msclock();
|
||||
revstate = lfsr_recovery64(ks2, ks3);
|
||||
uint64_t time_spent = msclock() - start_time;
|
||||
printf("Time spent in lfsr_recovery64(): %1.2f seconds\n", (float)time_spent/1000.0);
|
||||
printf("\nKeystream used to generate {ar} and {at}:\n");
|
||||
printf(" ks2: %08x\n",ks2);
|
||||
printf(" ks3: %08x\n",ks3);
|
||||
|
||||
// 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);
|
||||
// Decrypting communication using keystream if presented
|
||||
if (argc > 6 ) {
|
||||
printf("\nDecrypted communication:\n");
|
||||
uint8_t ks4;
|
||||
int rollb = 0;
|
||||
for (int i = 0; i < encc; i++) {
|
||||
printf("{dec%d}: ", i);
|
||||
for (int i2 = 0; i2 < enclen[i]; i2++) {
|
||||
ks4 = crypto1_byte(revstate, 0, 0);
|
||||
printf("%02x", ks4 ^ enc[i][i2]);
|
||||
rollb += 1;
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
for (int i = 0; i < rollb; i++) {
|
||||
lfsr_rollback_byte(revstate, 0, 0);
|
||||
}
|
||||
}
|
||||
|
||||
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);
|
||||
crypto1_destroy(revstate);
|
||||
|
||||
// Decrypting communication using keystream if presented
|
||||
if (argc > 6 ) {
|
||||
printf("\nDecrypted communication:\n");
|
||||
uint8_t ks4;
|
||||
int rollb = 0;
|
||||
for (int i = 0; i < encc; i++) {
|
||||
printf("{dec%d}: ", i);
|
||||
for (int i2 = 0; i2 < enclen[i]; i2++) {
|
||||
ks4 = crypto1_byte(revstate, 0, 0);
|
||||
printf("%02x", ks4 ^ enc[i][i2]);
|
||||
rollb += 1;
|
||||
}
|
||||
printf("\n");
|
||||
}
|
||||
for (int i = 0; i < rollb; i++) {
|
||||
lfsr_rollback_byte(revstate, 0, 0);
|
||||
}
|
||||
}
|
||||
|
||||
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" PRIx64"]\n\n",key);
|
||||
crypto1_destroy(revstate);
|
||||
|
||||
return 0;
|
||||
printf("\nFound Key: [%012" PRIx64"]\n\n",key);
|
||||
|
||||
}
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user