while(length_B>ENTROPIUM_RANDOMBLOCK_SIZE){
entropium_getRandomBlock(block);
block = (uint8_t*)block + ENTROPIUM_RANDOMBLOCK_SIZE;
while(length_B>ENTROPIUM_RANDOMBLOCK_SIZE){
entropium_getRandomBlock(block);
block = (uint8_t*)block + ENTROPIUM_RANDOMBLOCK_SIZE;