X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/de867f502fd3611678d3ed26f69eb6b141f542fc..refs/pull/550/head:/common/crapto1/crapto1.c?ds=inline

diff --git a/common/crapto1/crapto1.c b/common/crapto1/crapto1.c
index 50ff6e1a..1edfca1b 100644
--- a/common/crapto1/crapto1.c
+++ b/common/crapto1/crapto1.c
@@ -18,7 +18,9 @@
     Copyright (C) 2008-2014 bla <blapost@gmail.com>
 */
 #include "crapto1.h"
+
 #include <stdlib.h>
+#include "parity.h"
 
 #if !defined LOWMEM && defined __GNUC__
 static uint8_t filterlut[1 << 20];
@@ -97,7 +99,7 @@ static void bucket_sort_intersect(uint32_t* const estart, uint32_t* const estop,
 /** binsearch
  * Binary search for the first occurence of *stop's MSB in sorted [start,stop]
  */
-static inline uint32_t* binsearch(uint32_t *start, uint32_t *stop)
+/* static inline uint32_t* binsearch(uint32_t *start, uint32_t *stop)
 {
 	uint32_t mid, val = *stop & 0xff000000;
 	while(start != stop)
@@ -108,7 +110,7 @@ static inline uint32_t* binsearch(uint32_t *start, uint32_t *stop)
 
 	return start;
 }
-
+ */
 /** update_contribution
  * helper, calculates the partial linear feedback contributions and puts in MSB
  */
@@ -117,8 +119,8 @@ update_contribution(uint32_t *item, const uint32_t mask1, const uint32_t mask2)
 {
 	uint32_t p = *item >> 25;
 
-	p = p << 1 | parity(*item & mask1);
-	p = p << 1 | parity(*item & mask2);
+	p = p << 1 | evenparity32(*item & mask1);
+	p = p << 1 | evenparity32(*item & mask2);
 	*item = p << 24 | (*item & 0xffffff);
 }
 
@@ -174,10 +176,10 @@ recover(uint32_t *o_head, uint32_t *o_tail, uint32_t oks,
 
 	if(rem == -1) {
 		for(e = e_head; e <= e_tail; ++e) {
-			*e = *e << 1 ^ parity(*e & LF_POLY_EVEN) ^ !!(in & 4);
+			*e = *e << 1 ^ evenparity32(*e & LF_POLY_EVEN) ^ !!(in & 4);
 			for(o = o_head; o <= o_tail; ++o, ++sl) {
 				sl->even = *o;
-				sl->odd = *e ^ parity(*o & LF_POLY_ODD);
+				sl->odd = *e ^ evenparity32(*o & LF_POLY_ODD);
 				sl[1].odd = sl[1].even = 0;
 			}
 		}
@@ -329,30 +331,30 @@ struct Crypto1State* lfsr_recovery64(uint32_t ks2, uint32_t ks3)
 			continue;
 
 		for(j = 0; j < 19; ++j)
-			low = low << 1 | parity(i & S1[j]);
+			low = low << 1 | evenparity32(i & S1[j]);
 		for(j = 0; j < 32; ++j)
-			hi[j] = parity(i & T1[j]);
+			hi[j] = evenparity32(i & T1[j]);
 
 		for(; tail >= table; --tail) {
 			for(j = 0; j < 3; ++j) {
 				*tail = *tail << 1;
-				*tail |= parity((i & C1[j]) ^ (*tail & C2[j]));
+				*tail |= evenparity32((i & C1[j]) ^ (*tail & C2[j]));
 				if(filter(*tail) != oks[29 + j])
 					goto continue2;
 			}
 
 			for(j = 0; j < 19; ++j)
-				win = win << 1 | parity(*tail & S2[j]);
+				win = win << 1 | evenparity32(*tail & S2[j]);
 
 			win ^= low;
 			for(j = 0; j < 32; ++j) {
-				win = win << 1 ^ hi[j] ^ parity(*tail & T2[j]);
+				win = win << 1 ^ hi[j] ^ evenparity32(*tail & T2[j]);
 				if(filter(win) != eks[j])
 					goto continue2;
 			}
 
-			*tail = *tail << 1 | parity(LF_POLY_EVEN & *tail);
-			sl->odd = *tail ^ parity(LF_POLY_ODD & win);
+			*tail = *tail << 1 | evenparity32(LF_POLY_EVEN & *tail);
+			sl->odd = *tail ^ evenparity32(LF_POLY_ODD & win);
 			sl->even = win;
 			++sl;
 			sl->odd = sl->even = 0;
@@ -380,7 +382,7 @@ uint8_t lfsr_rollback_bit(struct Crypto1State *s, uint32_t in, int fb)
 	out ^= !!in;
 	out ^= (ret = filter(s->odd)) & !!fb;
 
-	s->even |= parity(out) << 23;
+	s->even |= evenparity32(out) << 23;
 	return ret;
 }
 /** lfsr_rollback_byte
@@ -424,7 +426,6 @@ int nonce_distance(uint32_t from, uint32_t to)
 	return (65535 + dist[to >> 16] - dist[from >> 16]) % 65535;
 }
 
-
 static uint32_t fastfwd[2][8] = {
 	{ 0, 0x4BC53, 0xECB1, 0x450E2, 0x25E29, 0x6E27A, 0x2B298, 0x60ECB},
 	{ 0, 0x1D962, 0x4BC53, 0x56531, 0xECB1, 0x135D3, 0x450E2, 0x58980}};
@@ -486,11 +487,11 @@ check_pfx_parity(uint32_t prefix, uint32_t rresp, uint8_t parities[8][8],
 		nr = ks1 ^ (prefix | c << 5);
 		rr = ks2 ^ rresp;
 
-		good &= parity(nr & 0x000000ff) ^ parities[c][3] ^ BIT(ks2, 24);
-		good &= parity(rr & 0xff000000) ^ parities[c][4] ^ BIT(ks2, 16);
-		good &= parity(rr & 0x00ff0000) ^ parities[c][5] ^ BIT(ks2,  8);
-		good &= parity(rr & 0x0000ff00) ^ parities[c][6] ^ BIT(ks2,  0);
-		good &= parity(rr & 0x000000ff) ^ parities[c][7] ^ ks3;
+		good &= evenparity32(nr & 0x000000ff) ^ parities[c][3] ^ BIT(ks2, 24);
+		good &= evenparity32(rr & 0xff000000) ^ parities[c][4] ^ BIT(ks2, 16);
+		good &= evenparity32(rr & 0x00ff0000) ^ parities[c][5] ^ BIT(ks2,  8);
+		good &= evenparity32(rr & 0x0000ff00) ^ parities[c][6] ^ BIT(ks2,  0);
+		good &= evenparity32(rr & 0x000000ff) ^ parities[c][7] ^ ks3;
 	}
 
 	return sl + good;
@@ -509,7 +510,7 @@ lfsr_common_prefix(uint32_t pfx, uint32_t rr, uint8_t ks[8], uint8_t par[8][8],
 	odd = lfsr_prefix_ks(ks, 1);
 	even = lfsr_prefix_ks(ks, 0);
 
-	s = statelist = malloc((sizeof *statelist) << 21); // need more for no_par special attack. Enough???
+	s = statelist = malloc((sizeof *statelist) << 22); // was << 20. Need more for no_par special attack. Enough???
 	if(!s || !odd || !even) {
 		free(statelist);
 		statelist = 0;