The measure of randomness used to generate secure seeds, keys, and nonces in cryptographic systems.
Entropy quantifies unpredictability. Wallets need high-quality entropy to create seeds and keys that cannot be feasibly guessed. Poor entropy increases the risk of key compromise.
Hardware wallets read noise from multiple sources (TRNGs, user input, environmental noise) to seed a CSPRNG before generating a 12–24 word mnemonic.
Avoid custom dice-rolling or homebrew methods unless you fully understand the process. Prefer devices and software that document their entropy sources and use deterministic signing to reduce nonce risk.
A wallet that reuses or poorly randomizes ECDSA nonces risks exposing the private key; RFC 6979 derives nonces deterministically from the message and key.
All terms and definitions may update as the Cryptionary improves.