From: Martin Holst Swende Date: Thu, 26 Feb 2015 19:35:54 +0000 (+0100) Subject: Merge branch 'master' of github.com:Proxmark/proxmark3 X-Git-Tag: v2.0.0-rc1~5 X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/188b2dbec4594e057a981d1d2b85b1a0c8745d78?hp=0387cd3393d87edf07cdd37dc942b6e561ce499a Merge branch 'master' of github.com:Proxmark/proxmark3 --- diff --git a/armsrc/Makefile b/armsrc/Makefile index be08e56b..75ccdece 100644 --- a/armsrc/Makefile +++ b/armsrc/Makefile @@ -43,8 +43,7 @@ ARMSRC = fpgaloader.c \ legic_prng.c \ iclass.c \ BigBuf.c \ - cipher.c \ - cipherutils.c\ + optimized_cipher.c # stdint.h provided locally until GCC 4.5 becomes C99 compliant APP_CFLAGS += -I. diff --git a/armsrc/cipher.c b/armsrc/cipher.c deleted file mode 100644 index 7c9cc873..00000000 --- a/armsrc/cipher.c +++ /dev/null @@ -1,272 +0,0 @@ -/***************************************************************************** - * WARNING - * - * THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY. - * - * USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL - * PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL, - * AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES. - * - * THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS. - * - ***************************************************************************** - * - * This file is part of loclass. It is a reconstructon of the cipher engine - * used in iClass, and RFID techology. - * - * The implementation is based on the work performed by - * Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and - * Milosch Meriac in the paper "Dismantling IClass". - * - * Copyright (C) 2014 Martin Holst Swende - * - * This is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This file is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with loclass. If not, see . - * - * - * - ****************************************************************************/ - - -#include "cipher.h" -#include "cipherutils.h" -#include -#include -#include -#include -#ifndef ON_DEVICE -#include "fileutils.h" -#endif - - -/** -* Definition 1 (Cipher state). A cipher state of iClass s is an element of F 40/2 -* consisting of the following four components: -* 1. the left register l = (l 0 . . . l 7 ) ∈ F 8/2 ; -* 2. the right register r = (r 0 . . . r 7 ) ∈ F 8/2 ; -* 3. the top register t = (t 0 . . . t 15 ) ∈ F 16/2 . -* 4. the bottom register b = (b 0 . . . b 7 ) ∈ F 8/2 . -**/ -typedef struct { - uint8_t l; - uint8_t r; - uint8_t b; - uint16_t t; -} State; - -/** -* Definition 2. The feedback function for the top register T : F 16/2 → F 2 -* is defined as -* T (x 0 x 1 . . . . . . x 15 ) = x 0 ⊕ x 1 ⊕ x 5 ⊕ x 7 ⊕ x 10 ⊕ x 11 ⊕ x 14 ⊕ x 15 . -**/ -bool T(State state) -{ - bool x0 = state.t & 0x8000; - bool x1 = state.t & 0x4000; - bool x5 = state.t & 0x0400; - bool x7 = state.t & 0x0100; - bool x10 = state.t & 0x0020; - bool x11 = state.t & 0x0010; - bool x14 = state.t & 0x0002; - bool x15 = state.t & 0x0001; - return x0 ^ x1 ^ x5 ^ x7 ^ x10 ^ x11 ^ x14 ^ x15; -} -/** -* Similarly, the feedback function for the bottom register B : F 8/2 → F 2 is defined as -* B(x 0 x 1 . . . x 7 ) = x 1 ⊕ x 2 ⊕ x 3 ⊕ x 7 . -**/ -bool B(State state) -{ - bool x1 = state.b & 0x40; - bool x2 = state.b & 0x20; - bool x3 = state.b & 0x10; - bool x7 = state.b & 0x01; - - return x1 ^ x2 ^ x3 ^ x7; - -} - - -/** -* Definition 3 (Selection function). The selection function select : F 2 × F 2 × -* F 8/2 → F 3/2 is defined as select(x, y, r) = z 0 z 1 z 2 where -* z 0 = (r 0 ∧ r 2 ) ⊕ (r 1 ∧ r 3 ) ⊕ (r 2 ∨ r 4 ) -* z 1 = (r 0 ∨ r 2 ) ⊕ (r 5 ∨ r 7 ) ⊕ r 1 ⊕ r 6 ⊕ x ⊕ y -* z 2 = (r 3 ∧ r 5 ) ⊕ (r 4 ∧ r 6 ) ⊕ r 7 ⊕ x -**/ -uint8_t _select(bool x, bool y, uint8_t r) -{ - bool r0 = r >> 7 & 0x1; - bool r1 = r >> 6 & 0x1; - bool r2 = r >> 5 & 0x1; - bool r3 = r >> 4 & 0x1; - bool r4 = r >> 3 & 0x1; - bool r5 = r >> 2 & 0x1; - bool r6 = r >> 1 & 0x1; - bool r7 = r & 0x1; - - bool z0 = (r0 & r2) ^ (r1 & ~r3) ^ (r2 | r4); - bool z1 = (r0 | r2) ^ ( r5 | r7) ^ r1 ^ r6 ^ x ^ y; - bool z2 = (r3 & ~r5) ^ (r4 & r6 ) ^ r7 ^ x; - - // The three bitz z0.. z1 are packed into a uint8_t: - // 00000ZZZ - //Return value is a uint8_t - uint8_t retval = 0; - retval |= (z0 << 2) & 4; - retval |= (z1 << 1) & 2; - retval |= z2 & 1; - - // Return value 0 <= retval <= 7 - return retval; -} - -/** -* Definition 4 (Successor state). Let s = l, r, t, b be a cipher state, k ∈ (F 82 ) 8 -* be a key and y ∈ F 2 be the input bit. Then, the successor cipher state s ′ = -* l ′ , r ′ , t ′ , b ′ is defined as -* t ′ := (T (t) ⊕ r 0 ⊕ r 4 )t 0 . . . t 14 l ′ := (k [select(T (t),y,r)] ⊕ b ′ ) ⊞ l ⊞ r -* b ′ := (B(b) ⊕ r 7 )b 0 . . . b 6 r ′ := (k [select(T (t),y,r)] ⊕ b ′ ) ⊞ l -* -* @param s - state -* @param k - array containing 8 bytes -**/ -State successor(uint8_t* k, State s, bool y) -{ - bool r0 = s.r >> 7 & 0x1; - bool r4 = s.r >> 3 & 0x1; - bool r7 = s.r & 0x1; - - State successor = {0,0,0,0}; - - successor.t = s.t >> 1; - successor.t |= (T(s) ^ r0 ^ r4) << 15; - - successor.b = s.b >> 1; - successor.b |= (B(s) ^ r7) << 7; - - bool Tt = T(s); - - successor.l = ((k[_select(Tt,y,s.r)] ^ successor.b) + s.l+s.r ) & 0xFF; - successor.r = ((k[_select(Tt,y,s.r)] ^ successor.b) + s.l ) & 0xFF; - - return successor; -} -/** -* We define the successor function suc which takes a key k ∈ (F 82 ) 8 , a state s and -* an input y ∈ F 2 and outputs the successor state s ′ . We overload the function suc -* to multiple bit input x ∈ F n 2 which we define as -* @param k - array containing 8 bytes -**/ -State suc(uint8_t* k,State s, BitstreamIn *bitstream) -{ - if(bitsLeft(bitstream) == 0) - { - return s; - } - bool lastbit = tailBit(bitstream); - return successor(k,suc(k,s,bitstream), lastbit); -} - -/** -* Definition 5 (Output). Define the function output which takes an internal -* state s =< l, r, t, b > and returns the bit r 5 . We also define the function output -* on multiple bits input which takes a key k, a state s and an input x ∈ F n 2 as -* output(k, s, ǫ) = ǫ -* output(k, s, x 0 . . . x n ) = output(s) · output(k, s ′ , x 1 . . . x n ) -* where s ′ = suc(k, s, x 0 ). -**/ -void output(uint8_t* k,State s, BitstreamIn* in, BitstreamOut* out) -{ - if(bitsLeft(in) == 0) - { - return; - } - pushBit(out,(s.r >> 2) & 1); - //Remove first bit - uint8_t x0 = headBit(in); - State ss = successor(k,s,x0); - output(k,ss,in, out); -} - -/** -* Definition 6 (Initial state). Define the function init which takes as input a -* key k ∈ (F 82 ) 8 and outputs the initial cipher state s =< l, r, t, b > -**/ - -State init(uint8_t* k) -{ - State s = { - ((k[0] ^ 0x4c) + 0xEC) & 0xFF,// l - ((k[0] ^ 0x4c) + 0x21) & 0xFF,// r - 0x4c, // b - 0xE012 // t - }; - return s; -} -void MAC(uint8_t* k, BitstreamIn input, BitstreamOut out) -{ - uint8_t zeroes_32[] = {0,0,0,0}; - BitstreamIn input_32_zeroes = {zeroes_32,sizeof(zeroes_32)*8,0}; - State initState = suc(k,init(k),&input); - output(k,initState,&input_32_zeroes,&out); -} - -void doMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4]) -{ - uint8_t cc_nr[13] = { 0 }; - uint8_t div_key[8]; - //cc_nr=(uint8_t*)malloc(length+1); - - memcpy(cc_nr,cc_nr_p,12); - memcpy(div_key,div_key_p,8); - - reverse_arraybytes(cc_nr,12); - BitstreamIn bitstream = {cc_nr,12 * 8,0}; - uint8_t dest []= {0,0,0,0,0,0,0,0}; - BitstreamOut out = { dest, sizeof(dest)*8, 0 }; - MAC(div_key,bitstream, out); - //The output MAC must also be reversed - reverse_arraybytes(dest, sizeof(dest)); - memcpy(mac, dest, 4); - //free(cc_nr); - return; -} -#ifndef ON_DEVICE -int testMAC() -{ - prnlog("[+] Testing MAC calculation..."); - - //From the "dismantling.IClass" paper: - uint8_t cc_nr[] = {0xFE,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0,0,0,0}; - //From the paper - uint8_t div_key[8] = {0xE0,0x33,0xCA,0x41,0x9A,0xEE,0x43,0xF9}; - uint8_t correct_MAC[4] = {0x1d,0x49,0xC9,0xDA}; - - uint8_t calculated_mac[4] = {0}; - doMAC(cc_nr,div_key, calculated_mac); - - if(memcmp(calculated_mac, correct_MAC,4) == 0) - { - prnlog("[+] MAC calculation OK!"); - - }else - { - prnlog("[+] FAILED: MAC calculation failed:"); - printarr(" Calculated_MAC", calculated_mac, 4); - printarr(" Correct_MAC ", correct_MAC, 4); - return 1; - } - - return 0; -} -#endif diff --git a/armsrc/cipher.h b/armsrc/cipher.h deleted file mode 100644 index bdea9432..00000000 --- a/armsrc/cipher.h +++ /dev/null @@ -1,49 +0,0 @@ -/***************************************************************************** - * WARNING - * - * THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY. - * - * USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL - * PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL, - * AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES. - * - * THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS. - * - ***************************************************************************** - * - * This file is part of loclass. It is a reconstructon of the cipher engine - * used in iClass, and RFID techology. - * - * The implementation is based on the work performed by - * Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and - * Milosch Meriac in the paper "Dismantling IClass". - * - * Copyright (C) 2014 Martin Holst Swende - * - * This is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This file is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with loclass. If not, see . - * - * - * - ****************************************************************************/ - - -#ifndef CIPHER_H -#define CIPHER_H -#include - -void doMAC(uint8_t *cc_nr_p, uint8_t *div_key_p, uint8_t mac[4]); -#ifndef ON_DEVICE -int testMAC(); -#endif - -#endif // CIPHER_H diff --git a/armsrc/cipherutils.c b/armsrc/cipherutils.c deleted file mode 100644 index c00e2be2..00000000 --- a/armsrc/cipherutils.c +++ /dev/null @@ -1,292 +0,0 @@ -/***************************************************************************** - * WARNING - * - * THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY. - * - * USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL - * PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL, - * AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES. - * - * THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS. - * - ***************************************************************************** - * - * This file is part of loclass. It is a reconstructon of the cipher engine - * used in iClass, and RFID techology. - * - * The implementation is based on the work performed by - * Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and - * Milosch Meriac in the paper "Dismantling IClass". - * - * Copyright (C) 2014 Martin Holst Swende - * - * This is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This file is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with loclass. If not, see . - * - * - * - ****************************************************************************/ - -#include -#include -#include -#include "cipherutils.h" -#ifndef ON_DEVICE -#include "fileutils.h" -#endif -/** - * - * @brief Return and remove the first bit (x0) in the stream : - * @param stream - * @return - */ -bool headBit( BitstreamIn *stream) -{ - int bytepos = stream->position >> 3; // divide by 8 - int bitpos = (stream->position++) & 7; // mask out 00000111 - return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1; -} -/** - * @brief Return and remove the last bit (xn) in the stream: - * @param stream - * @return - */ -bool tailBit( BitstreamIn *stream) -{ - int bitpos = stream->numbits -1 - (stream->position++); - - int bytepos= bitpos >> 3; - bitpos &= 7; - return (*(stream->buffer + bytepos) >> (7-bitpos)) & 1; -} -/** - * @brief Pushes bit onto the stream - * @param stream - * @param bit - */ -void pushBit( BitstreamOut* stream, bool bit) -{ - int bytepos = stream->position >> 3; // divide by 8 - int bitpos = stream->position & 7; - *(stream->buffer+bytepos) |= (bit & 1) << (7 - bitpos); - stream->position++; - stream->numbits++; -} - -/** - * @brief Pushes the lower six bits onto the stream - * as b0 b1 b2 b3 b4 b5 b6 - * @param stream - * @param bits - */ -void push6bits( BitstreamOut* stream, uint8_t bits) -{ - pushBit(stream, bits & 0x20); - pushBit(stream, bits & 0x10); - pushBit(stream, bits & 0x08); - pushBit(stream, bits & 0x04); - pushBit(stream, bits & 0x02); - pushBit(stream, bits & 0x01); -} - -/** - * @brief bitsLeft - * @param stream - * @return number of bits left in stream - */ -int bitsLeft( BitstreamIn *stream) -{ - return stream->numbits - stream->position; -} -/** - * @brief numBits - * @param stream - * @return Number of bits stored in stream - */ -int numBits(BitstreamOut *stream) -{ - return stream->numbits; -} - -void x_num_to_bytes(uint64_t n, size_t len, uint8_t* dest) -{ - while (len--) { - dest[len] = (uint8_t) n; - n >>= 8; - } -} - -uint64_t x_bytes_to_num(uint8_t* src, size_t len) -{ - uint64_t num = 0; - while (len--) - { - num = (num << 8) | (*src); - src++; - } - return num; -} -uint8_t reversebytes(uint8_t b) { - b = (b & 0xF0) >> 4 | (b & 0x0F) << 4; - b = (b & 0xCC) >> 2 | (b & 0x33) << 2; - b = (b & 0xAA) >> 1 | (b & 0x55) << 1; - return b; -} -void reverse_arraybytes(uint8_t* arr, size_t len) -{ - uint8_t i; - for( i =0; i< len ; i++) - { - arr[i] = reversebytes(arr[i]); - } -} -void reverse_arraycopy(uint8_t* arr, uint8_t* dest, size_t len) -{ - uint8_t i; - for( i =0; i< len ; i++) - { - dest[i] = reversebytes(arr[i]); - } -} -#ifndef ON_DEVICE -void printarr(char * name, uint8_t* arr, int len) -{ - int cx; - size_t outsize = 40+strlen(name)+len*5; - char* output = malloc(outsize); - memset(output, 0,outsize); - - int i ; - cx = snprintf(output,outsize, "uint8_t %s[] = {", name); - for(i =0 ; i< len ; i++) - { - cx += snprintf(output+cx,outsize-cx,"0x%02x,",*(arr+i));//5 bytes per byte - } - cx += snprintf(output+cx,outsize-cx,"};"); - prnlog(output); -} - -void printvar(char * name, uint8_t* arr, int len) -{ - int cx; - size_t outsize = 40+strlen(name)+len*2; - char* output = malloc(outsize); - memset(output, 0,outsize); - - int i ; - cx = snprintf(output,outsize,"%s = ", name); - for(i =0 ; i< len ; i++) - { - cx += snprintf(output+cx,outsize-cx,"%02x",*(arr+i));//2 bytes per byte - } - - prnlog(output); -} - -void printarr_human_readable(char * title, uint8_t* arr, int len) -{ - int cx; - size_t outsize = 100+strlen(title)+len*4; - char* output = malloc(outsize); - memset(output, 0,outsize); - - - int i; - cx = snprintf(output,outsize, "\n\t%s\n", title); - for(i =0 ; i< len ; i++) - { - if(i % 16 == 0) - cx += snprintf(output+cx,outsize-cx,"\n%02x| ", i ); - cx += snprintf(output+cx,outsize-cx, "%02x ",*(arr+i)); - } - prnlog(output); - free(output); -} -#endif -//----------------------------- -// Code for testing below -//----------------------------- - -#ifndef ON_DEVICE -int testBitStream() -{ - uint8_t input [] = {0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF}; - uint8_t output [] = {0,0,0,0,0,0,0,0}; - BitstreamIn in = { input, sizeof(input) * 8,0}; - BitstreamOut out ={ output, 0,0} - ; - while(bitsLeft(&in) > 0) - { - pushBit(&out, headBit(&in)); - //printf("Bits left: %d\n", bitsLeft(&in)); - //printf("Bits out: %d\n", numBits(&out)); - } - if(memcmp(input, output, sizeof(input)) == 0) - { - prnlog(" Bitstream test 1 ok"); - }else - { - prnlog(" Bitstream test 1 failed"); - uint8_t i; - for(i = 0 ; i < sizeof(input) ; i++) - { - prnlog(" IN %02x, OUT %02x", input[i], output[i]); - } - return 1; - } - return 0; -} - -int testReversedBitstream() -{ - uint8_t input [] = {0xDE,0xAD,0xBE,0xEF,0xDE,0xAD,0xBE,0xEF}; - uint8_t reverse [] = {0,0,0,0,0,0,0,0}; - uint8_t output [] = {0,0,0,0,0,0,0,0}; - BitstreamIn in = { input, sizeof(input) * 8,0}; - BitstreamOut out ={ output, 0,0}; - BitstreamIn reversed_in ={ reverse, sizeof(input)*8,0}; - BitstreamOut reversed_out ={ reverse,0 ,0}; - - while(bitsLeft(&in) > 0) - { - pushBit(&reversed_out, tailBit(&in)); - } - while(bitsLeft(&reversed_in) > 0) - { - pushBit(&out, tailBit(&reversed_in)); - } - if(memcmp(input, output, sizeof(input)) == 0) - { - prnlog(" Bitstream test 2 ok"); - }else - { - prnlog(" Bitstream test 2 failed"); - uint8_t i; - for(i = 0 ; i < sizeof(input) ; i++) - { - prnlog(" IN %02x, MIDDLE: %02x, OUT %02x", input[i],reverse[i], output[i]); - } - return 1; - } - return 0; -} - - -int testCipherUtils(void) -{ - prnlog("[+] Testing some internals..."); - int retval = 0; - retval |= testBitStream(); - retval |= testReversedBitstream(); - return retval; -} -#endif diff --git a/armsrc/cipherutils.h b/armsrc/cipherutils.h deleted file mode 100644 index ee4939e3..00000000 --- a/armsrc/cipherutils.h +++ /dev/null @@ -1,76 +0,0 @@ -/***************************************************************************** - * WARNING - * - * THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY. - * - * USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL - * PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL, - * AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES. - * - * THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS. - * - ***************************************************************************** - * - * This file is part of loclass. It is a reconstructon of the cipher engine - * used in iClass, and RFID techology. - * - * The implementation is based on the work performed by - * Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and - * Milosch Meriac in the paper "Dismantling IClass". - * - * Copyright (C) 2014 Martin Holst Swende - * - * This is free software: you can redistribute it and/or modify - * it under the terms of the GNU General Public License version 2 as published - * by the Free Software Foundation. - * - * This file is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with loclass. If not, see . - * - * - * - ****************************************************************************/ - - -#ifndef CIPHERUTILS_H -#define CIPHERUTILS_H -#include -#include -#include - -typedef struct { - uint8_t * buffer; - uint8_t numbits; - uint8_t position; -} BitstreamIn; - -typedef struct { - uint8_t * buffer; - uint8_t numbits; - uint8_t position; -}BitstreamOut; - -bool headBit( BitstreamIn *stream); -bool tailBit( BitstreamIn *stream); -void pushBit( BitstreamOut *stream, bool bit); -int bitsLeft( BitstreamIn *stream); -#ifndef ON_DEVICE -int testCipherUtils(void); -int testMAC(); -void printarr(char * name, uint8_t* arr, int len); -void printvar(char * name, uint8_t* arr, int len); -void printarr_human_readable(char * title, uint8_t* arr, int len); -#endif -void push6bits( BitstreamOut* stream, uint8_t bits); -void EncryptDES(bool key[56], bool outBlk[64], bool inBlk[64], int verbose) ; -void x_num_to_bytes(uint64_t n, size_t len, uint8_t* dest); -uint64_t x_bytes_to_num(uint8_t* src, size_t len); -uint8_t reversebytes(uint8_t b); -void reverse_arraybytes(uint8_t* arr, size_t len); -void reverse_arraycopy(uint8_t* arr, uint8_t* dest, size_t len); -#endif // CIPHERUTILS_H diff --git a/armsrc/iclass.c b/armsrc/iclass.c index a976217d..ca6d9a7e 100644 --- a/armsrc/iclass.c +++ b/armsrc/iclass.c @@ -47,8 +47,9 @@ // different initial value (CRC_ICLASS) #include "iso14443crc.h" #include "iso15693tools.h" -#include "cipher.h" #include "protocols.h" +#include "optimized_cipher.h" + static int timeout = 4096; @@ -1085,7 +1086,7 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) // Tag CSN uint8_t *modulated_response; - int modulated_response_size; + int modulated_response_size = 0; uint8_t* trace_data = NULL; int trace_data_size = 0; @@ -1132,8 +1133,10 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) CodeIClassTagAnswer(card_challenge_data, sizeof(card_challenge_data)); memcpy(resp_cc, ToSend, ToSendMax); resp_cc_len = ToSendMax; - //This is used for responding to READ-block commands + //This is used for responding to READ-block commands or other data which is dynamically generated uint8_t *data_response = BigBuf_malloc(8 * 2 + 2); + //This is used for responding to READ-block commands or other data which is dynamically generated + uint8_t *data_generic_trace = BigBuf_malloc(8 * 2 + 2); // Start from off (no field generated) //FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); @@ -1201,7 +1204,8 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) //Reader just sent us NR and MAC(k,cc * nr) //The diversified key should be stored on block 3 //However, from a typical dump, the key will not be there - uint8_t *diversified_key = { 0 }; + uint8_t diversified_key[8] = { 0 }; + //Get the diversified key from emulator memory memcpy(diversified_key, emulator+(8*3),8); uint8_t ccnr[12] = { 0 }; @@ -1210,12 +1214,14 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) //Put nr there memcpy(ccnr+8, receivedCmd+1,4); //Now, calc MAC - doMAC(ccnr,diversified_key, trace_data); + opt_doMAC(ccnr,diversified_key, data_generic_trace); + trace_data = data_generic_trace; trace_data_size = 4; CodeIClassTagAnswer(trace_data , trace_data_size); memcpy(data_response, ToSend, ToSendMax); modulated_response = data_response; modulated_response_size = ToSendMax; + //exitLoop = true; }else { //Not fullsim, we don't respond // We do not know what to answer, so lets keep quiet @@ -1253,6 +1259,13 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) modulated_response = data_response; modulated_response_size = ToSendMax; } + else if(receivedCmd[0] == ICLASS_CMD_PAGESEL) + {//Pagesel + //Pagesel enables to select a page in the selected chip memory and return its configuration block + //Chips with a single page will not answer to this command + // It appears we're fine ignoring this. + //Otherwise, we should answer 8bytes (block) + 2bytes CRC + } else { //#db# Unknown command received from reader (len=5): 26 1 0 f6 a 44 44 44 44 // Never seen this command before diff --git a/armsrc/lfsampling.c b/armsrc/lfsampling.c index 7af065ea..6094bd34 100644 --- a/armsrc/lfsampling.c +++ b/armsrc/lfsampling.c @@ -12,7 +12,7 @@ #include "string.h" #include "lfsampling.h" -#include "cipherutils.h" + sample_config config = { 1, 8, 1, 95, 0 } ; void printConfig() @@ -55,20 +55,19 @@ sample_config* getSamplingConfig() { return &config; } -/* + typedef struct { uint8_t * buffer; uint32_t numbits; uint32_t position; } BitstreamOut; -*/ /** * @brief Pushes bit onto the stream * @param stream * @param bit */ -/*void pushBit( BitstreamOut* stream, uint8_t bit) +void pushBit( BitstreamOut* stream, uint8_t bit) { int bytepos = stream->position >> 3; // divide by 8 int bitpos = stream->position & 7; @@ -76,7 +75,7 @@ typedef struct { stream->position++; stream->numbits++; } -*/ + /** * Setup the FPGA to listen for samples. This method downloads the FPGA bitstream * if not already loaded, sets divisor and starts up the antenna.