pub const NOISE_PATTERN_IK: &str = "Noise_IK_25519_AESGCM_SHA256\x00\x00\x00\x00";Expand description
Noise IK pattern name, zero-padded to HASHLEN (32 bytes).
Used on reconnect when the client has a valid cached serverStaticPublic
(from a previous XX handshake). Saves one round trip and ships a 0-RTT
payload. Mirrors WA Web’s w constant.