remove spurious spaces & tabs at end of lines

tools/mfkey/crapto1.c

@@ -222,7 +222,7 @@ struct Crypto1State* lfsr_recovery32(uint32_t ks2, uint32_t in)
 
 	// allocate memory for out of place bucket_sort
 	bucket_array_t bucket;
-	
+
 	for (uint32_t i = 0; i < 2; i++) {
 		for (uint32_t j = 0; j <= 0xff; j++) {
 			bucket[i][j].head = malloc(sizeof(uint32_t)<<14);
@@ -424,7 +424,7 @@ uint32_t lfsr_rollback_word(struct Crypto1State *s, uint32_t in, int fb)
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 18), fb) << (18 ^ 24);
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 17), fb) << (17 ^ 24);
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 16), fb) << (16 ^ 24);
-	
+
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 15), fb) << (15 ^ 24);
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 14), fb) << (14 ^ 24);
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 13), fb) << (13 ^ 24);
@@ -433,7 +433,7 @@ uint32_t lfsr_rollback_word(struct Crypto1State *s, uint32_t in, int fb)
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 10), fb) << (10 ^ 24);
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 9), fb) << (9 ^ 24);
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 8), fb) << (8 ^ 24);
-	
+
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 7), fb) << (7 ^ 24);
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 6), fb) << (6 ^ 24);
 	ret |= lfsr_rollback_bit(s, BEBIT(in, 5), fb) << (5 ^ 24);
@@ -483,7 +483,7 @@ uint32_t *lfsr_prefix_ks(uint8_t ks[8], int isodd)
 {
 	uint32_t *candidates = malloc(4 << 10);
 	if(!candidates) return 0;
-	
+
 	uint32_t c,  entry;
 	int size = 0, i, good;
 
@@ -531,7 +531,7 @@ static struct Crypto1State* check_pfx_parity(uint32_t prefix, uint32_t rresp, ui
 	}
 
 	return sl + good;
-} 
+}
 
 /** lfsr_common_prefix
  * Implentation of the common prefix attack.

tools/mfkey/crapto1.h

@@ -44,7 +44,7 @@ uint32_t lfsr_rollback_word(struct Crypto1State* s, uint32_t in, int fb);
 int nonce_distance(uint32_t from, uint32_t to);
 #define SWAPENDIAN(x)\
 	(x = (x >> 8 & 0xff00ff) | (x & 0xff00ff) << 8, x = x >> 16 | x << 16)
-	
+
 #define FOREACH_VALID_NONCE(N, FILTER, FSIZE)\
 	uint32_t __n = 0,__M = 0, N = 0;\
 	int __i;\
@@ -54,7 +54,7 @@ int nonce_distance(uint32_t from, uint32_t to);
 				break;\
 			else if(__i)\
 				__M = prng_successor(__M, (__i == 7) ? 48 : 8);\
-			else 
+			else
 
 #define LF_POLY_ODD (0x29CE5C)
 #define LF_POLY_EVEN (0x870804)

tools/mfkey/crypto1.c

@@ -25,8 +25,8 @@ struct Crypto1State * crypto1_create(uint64_t key)
 	struct Crypto1State *s = malloc(sizeof(*s));
 	if ( !s ) return NULL;
 
-	s->odd = s->even = 0;	
-	
+	s->odd = s->even = 0;
+
 	int i;
 	//for(i = 47;s && i > 0; i -= 2) {
 	for(i = 47; i > 0; i -= 2) {
@@ -103,7 +103,7 @@ uint32_t crypto1_word(struct Crypto1State *s, uint32_t in, int is_encrypted)
 	ret |= crypto1_bit(s, BEBIT(in, 5), is_encrypted) << (5 ^ 24);
 	ret |= crypto1_bit(s, BEBIT(in, 6), is_encrypted) << (6 ^ 24);
 	ret |= crypto1_bit(s, BEBIT(in, 7), is_encrypted) << (7 ^ 24);
-	
+
 	ret |= crypto1_bit(s, BEBIT(in, 8), is_encrypted) << (8 ^ 24);
 	ret |= crypto1_bit(s, BEBIT(in, 9), is_encrypted) << (9 ^ 24);
 	ret |= crypto1_bit(s, BEBIT(in, 10), is_encrypted) << (10 ^ 24);

tools/mfkey/mfkey32.c

@@ -43,14 +43,14 @@ int main (int argc, char *argv[]) {
 	uint32_t p64 = prng_successor(nt, 64);
 	printf("  nt': %08x\n", p64);
 	printf(" nt'': %08x\n", prng_successor(p64, 32));
-	
+
 	// Extract the keystream from the messages
 	printf("\nKeystream used to generate {ar} and {at}:\n");
 	ks2 = ar0_enc ^ p64;
 	printf("  ks2: %08x\n", ks2);
 
 	s = lfsr_recovery32(ar0_enc ^ p64, 0);
-  
+
 	for(t = s; t->odd | t->even; ++t) {
 		lfsr_rollback_word(t, 0, 0);
 		lfsr_rollback_word(t, nr0_enc, 1);

tools/mfkey/mfkey32v2.c

@@ -3,7 +3,7 @@
 #include "crapto1.h"
 #include <stdio.h>
 #include <stdlib.h>
- 
+
 int main (int argc, char *argv[]) {
 	struct Crypto1State *s,*t;
 	uint64_t key;     // recovered key
@@ -46,7 +46,7 @@ int main (int argc, char *argv[]) {
 	printf("\nLFSR succesors of the tag challenge:\n");
 	uint32_t p64 = prng_successor(nt0, 64);
 	uint32_t p64b = prng_successor(nt1, 64);
-	
+
 	printf("  nt': %08x\n", p64);
 	printf(" nt'': %08x\n", prng_successor(p64, 32));
 
@@ -56,13 +56,13 @@ int main (int argc, char *argv[]) {
 	printf("  ks2: %08x\n",ks2);
 
 	s = lfsr_recovery32(ar0_enc ^ p64, 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) ^ p64b)) {

tools/mfkey/mfkey64.c

@@ -26,7 +26,7 @@ int main (int argc, char *argv[]) {
 
 	int encc = argc - 6;
 	int enclen[encc];
-	uint8_t enc[encc][120]; 
+	uint8_t enc[encc][120];
 
 	sscanf(argv[1],"%x",&uid);
 	sscanf(argv[2],"%x",&nt);
@@ -39,7 +39,7 @@ int main (int argc, char *argv[]) {
 			sscanf(argv[i+6] + i2*2, "%2x", (unsigned int *)&enc[i][i2]);
 		}
 	}
-	
+
 	printf("Recovering key for:\n");
 
 	printf("  uid: %08x\n",uid);
@@ -60,7 +60,7 @@ int main (int argc, char *argv[]) {
 	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);
@@ -73,11 +73,11 @@ int main (int argc, char *argv[]) {
 	// Decrypting communication using keystream if presented
 	if (argc > 6 ) {
 		printf("\nDecrypted communication:\n");
-		uint8_t ks4; 
+		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++) {  
+			for (int i2 = 0; i2 < enclen[i]; i2++) {
 				ks4 = crypto1_byte(revstate, 0, 0);
 				printf("%02x", ks4 ^ enc[i][i2]);
 				rollb += 1;
@@ -87,7 +87,7 @@ int main (int argc, char *argv[]) {
 		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);