CHG: syntax suger

[proxmark3-svn] / client / nonce2key / crapto1.c

diff --git a/client/nonce2key/crapto1.c b/client/nonce2key/crapto1.c
index 13c4c063af078fb4d155b7f227d26eda6b8fa9c9..6d2ae9af47a0c4dc6de3875ea844ed6e2ebb2f80 100644 (file)
--- a/client/nonce2key/crapto1.c
+++ b/client/nonce2key/crapto1.c
@@ -21,14 +21,20 @@
 #include <stdlib.h>\r
 \r
 #if !defined LOWMEM && defined __GNUC__\r
-static uint8_t filterlut[1 << 20];\r
+uint8_t filterlut[1 << 20];\r
 static void __attribute__((constructor)) fill_lut()\r
 {\r
-        uint32_t i;\r
-        for(i = 0; i < 1 << 20; ++i)\r
-                filterlut[i] = filter(i);\r
+       uint32_t x;\r
+       uint32_t f;\r
+       for(x = 0; x < 1 << 20; ++x) {\r
+               f  = 0xf22c0 >> (x       & 0xf) & 16;\r
+               f |= 0x6c9c0 >> (x >>  4 & 0xf) &  8;\r
+               f |= 0x3c8b0 >> (x >>  8 & 0xf) &  4;\r
+               f |= 0x1e458 >> (x >> 12 & 0xf) &  2;\r
+               f |= 0x0d938 >> (x >> 16 & 0xf) &  1;\r
+               filterlut[x] = BIT(0xEC57E80A, f);\r
+       }\r
 }\r
-#define filter(x) (filterlut[(x) & 0xfffff])\r
 #endif\r
 \r
 \r