Reproducible randomness 

• Cell values: 0-255 (8 bit values)
• A random hash

my $hash = md5_hex(rand());

# 580c1b1af6c414afa889403d96bae60d

• 128 bits or 16 ‘random’ 8 bit values

$hash = md5_hex($hash);

# ae8f4912a2fd24982611c36c8c788635