#define _B(i) (((ctx->nfsr[9-((i)/8)])>>(7-((i)%8)))&1)
-uint8_t h_lut[4] PROGMEM = {0x4C, 0xB6, 0xD3, 0x26};
+const uint8_t h_lut[4] PROGMEM = {0x4C, 0xB6, 0xD3, 0x26};
#ifdef GRAIN_BADOPTIMISATION
-uint8_t g_lut[128] PROGMEM = {
+const uint8_t g_lut[128] PROGMEM = {
0xF0, 0xA5, 0x0F, 0x5A, 0x0F, 0x5A, 0xF0, 0xA5, 0x0F, 0x5A, 0xF0, 0xA5, 0xF0, 0x5A, 0x0F, 0x0F,
0xC3, 0x96, 0x3C, 0x69, 0x3C, 0x69, 0xC3, 0x96, 0x9C, 0xC9, 0x63, 0x36, 0x63, 0xC9, 0x9C, 0x9C,
0x0F, 0x5A, 0x0F, 0x5A, 0xF0, 0xA5, 0xF0, 0x5A, 0xF0, 0xA5, 0xF0, 0xA5, 0x0F, 0xA5, 0x0F, 0xF0,