Constant http::header::PUBLIC_KEY_PINS

pub const PUBLIC_KEY_PINS: HeaderName = HeaderName{inner: Repr::Standard(StandardHeader::PublicKeyPins),}

Associates a specific cryptographic public key with a certain server.

This decreases the risk of MITM attacks with forged certificates. If one or several keys are pinned and none of them are used by the server, the browser will not accept the response as legitimate, and will not display it.