uint16_t i;
for(i=0; i<(blocksize_bit+7)/8; ++i){
putc(pgm_read_byte(hexdigit_tab_uc_P + ((block[i]) >> 4)), nessie_out_file);
uint16_t i;
for(i=0; i<(blocksize_bit+7)/8; ++i){
putc(pgm_read_byte(hexdigit_tab_uc_P + ((block[i]) >> 4)), nessie_out_file);