#include <stdint.h>
#include <avr/pgmspace.h>
-uint8_t blake_sigma[] PROGMEM = {
+const uint8_t blake_sigma[] PROGMEM = {
0x01, 0x23, 0x45, 0x67, 0x89, 0xAB, 0xCD, 0xEF,
0xEA, 0x48, 0x9F, 0xD6, 0x1C, 0x02, 0xB7, 0x53,
0xB8, 0xC0, 0x52, 0xFD, 0xAE, 0x36, 0x71, 0x94,
0xA2, 0x84, 0x76, 0x15, 0xFB, 0x9E, 0x3C, 0xD0,
};
-uint8_t blake_index_lut[] PROGMEM = {
+const uint8_t blake_index_lut[] PROGMEM = {
0x0, 0x4, 0x8, 0xC,
0x1, 0x5, 0x9, 0xD,
0x2, 0x6, 0xA, 0xE,