I wasn't one of the downvoters, since your actual point is clear and true, but DO NOT EVER USE XOR TO COMBINE ENTROPY! I cannot emphasize this enough - XOR allo

I wasn't one of the downvoters, since your actual point is clear and true, but DO NOT EVER USE XOR TO COMBINE ENTROPY! I cannot emphasize this enough - XOR allows malicous entropy sources to cancel out other entropy. Always use a cryptographically secure hash function, especially when adding entropy from RDRAND.