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Verifier is a derivative of the password. It is resistant to dictionary attacks and can not be used for authentication (only it’s verifying).
SOURCE = PBKDF2(SALT=PeerId, PASSWORD, 1<<16, SHA512) PUB, PRIV = Ed25519.Generate(SOURCE)
Verifier is public key of Ed25519 generated from the PBKDF2 of the
passphrase in hexadecimal encoding. PeerId
is used as a 128-bit
salt. Server stores and knows only verifier. Client can compute the
whole keypair every time he makes handshake.