nonce generator in the 'adjective adjective animal' pattern that that Gfycat (and Twitch) uses

A nonce manager PHP library useful for preventing CSRF and replay attacks.

Phantom Curve Attack: How the Pollard–Kangaroo Algorithm Exposes Private Keys of Lost Bitcoin Wallets via Low-Entropy Nonces under Exponential Degradation of the Secret Key Parameter “K”

A recursive, entropy-pruned, balanced-ternary mining algorithm that finds sequences whose SHA-256 hash has leading zero bytes and whose trit distribution is maximally random.

ANNE Hasher