// Extracting keybytes


    unsigned char potentialKeysTrimmed[16][20]; // contains potential keys that aren't 0x0
    int potentialKeysTrimmedLength[16]; // contains # of potential key bytes per state byte
    int counter = 0;

    for (int i = 0; i < 16; i++){
        for (int j = 0; j < 256; j++){
            if(potentialKeys[i][j] != 0){
                potentialKeysTrimmed[i][counter] = potentialKeys[i][j];
                counter = counter+1;

            }
            potentialKeysTrimmedLength[i] = counter;

        }
        counter = 0;
    }

// Print:
    for (int i = 0; i < 16; i++){
        printf("\n%x: ", i);
        for (int j = 0; j < potentialKeysTrimmedLength[i]; j++){
            printf("%x, ",potentialKeysTrimmed[i][j]);
        }
    }