http://i3xi5qxvbrngh3g6o7czwjfxwjzigook7zxzjmgwg5b7xnjcn5hzciad.onion/print.html
All "random" values MUST selected uniformly at random from the
universe of possible values, unless otherwise noted. Cryptographic hash functions Tor uses the cryptographic hash functions
SHA-1, SHA-256, and SHA3-256.