Update crapto1.h

[proxmark3-svn] / common / crapto1 / crapto1.h

diff --git a/common/crapto1/crapto1.h b/common/crapto1/crapto1.h
index 96ab96a27ed662fd9d39ee8ec820ca98178547e3..7ccddafd572237405e6b3b1f691441eb2474fbbc 100644 (file)
--- a/common/crapto1/crapto1.h
+++ b/common/crapto1/crapto1.h
@@ -48,12 +48,13 @@ uint8_t lfsr_rollback_bit(struct Crypto1State* s, uint32_t in, int fb);
 uint8_t lfsr_rollback_byte(struct Crypto1State* s, uint32_t in, int fb);
 uint32_t lfsr_rollback_word(struct Crypto1State* s, uint32_t in, int fb);
 int nonce_distance(uint32_t from, uint32_t to);
+extern bool validate_prng_nonce(uint32_t nonce);
 #define FOREACH_VALID_NONCE(N, FILTER, FSIZE)\
        uint32_t __n = 0,__M = 0, N = 0;\
        int __i;\
        for(; __n < 1 << 16; N = prng_successor(__M = ++__n, 16))\
                for(__i = FSIZE - 1; __i >= 0; __i--)\
-                       if(BIT(FILTER, __i) ^ parity(__M & 0xFF01))\
+                       if(BIT(FILTER, __i) ^ evenparity32(__M & 0xFF01))\
                                break;\
                        else if(__i)\
                                __M = prng_successor(__M, (__i == 7) ? 48 : 8);\
@@ -63,24 +64,6 @@ int nonce_distance(uint32_t from, uint32_t to);
 #define LF_POLY_EVEN (0x870804)
 #define BIT(x, n) ((x) >> (n) & 1)
 #define BEBIT(x, n) BIT(x, (n) ^ 24)
-static inline int parity(uint32_t x)
-{
-#if !defined __i386__ || !defined __GNUC__
-       x ^= x >> 16;
-       x ^= x >> 8;
-       x ^= x >> 4;
-       return BIT(0x6996, x & 0xf);
-#else
-        __asm(    "movl %1, %%eax\n"
-               "mov %%ax, %%cx\n"
-               "shrl $0x10, %%eax\n"
-               "xor %%ax, %%cx\n"
-                "xor %%ch, %%cl\n"
-                "setpo %%al\n"
-                "movzx %%al, %0\n": "=r"(x) : "r"(x): "eax","ecx");
-       return x;
-#endif
-}
 static inline int filter(uint32_t const x)
 {
        uint32_t f;