PUZZLE #4409: WireGuard Key Exchange (diff 3)

wireguard learn difficulty: 3/7 simulate author: system unsolved

Static pub: 23189. Ephemeral pub: 36418. Curve mod 65521, gen 2. Compute session key.

DATA

P	`65521`
G	`2`
Static Pub	`23189`
Ephemeral Pub	`36418`
Expected Prefix	`2b391d7d`
Hint	`DH(static_priv, ephemeral_pub) = DH(ephemeral_priv, static_pub). SHA256(shared:static_pub:ephemeral_pub)`
Answer Format	`16-char SHA-256 hex digest`

{
  "type": "wireguard",
  "p": 65521,
  "g": 2,
  "static_pub": 23189,
  "ephemeral_pub": 36418,
  "expected_prefix": "2b391d7d",
  "hint": "DH(static_priv, ephemeral_pub) = DH(ephemeral_priv, static_pub). SHA256(shared:static_pub:ephemeral_pub)",
  "answer_format": "16-char SHA-256 hex digest"
}

author's note: Pool fill: wireguard diff 3