create
fun create(sharedSecret: ByteVector32, failure: FailureMessage): ByteArray
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Create a failure packet that will be returned to the sender. Each intermediate hop will add a layer of encryption and forward to the previous hop. Note that malicious intermediate hops may drop the packet or alter it (which breaks the mac).
Return
a failure packet that can be sent to the destination node.
Parameters
shared
destination node's shared secret that was computed when the original onion for the HTLC was created or forwarded: see OnionPacket.create() and OnionPacket.wrap().
failure
failure message.