package sphinx

import "fmt"

var (
	// ErrReplayedPacket is an error returned when a packet is rejected
	// during processing due to being an attempted replay or probing
	// attempt.
	ErrReplayedPacket = fmt.Errorf("sphinx packet replay attempted")

	// ErrInvalidOnionVersion is returned during decoding of the onion
	// packet, when the received packet has an unknown version byte.
	ErrInvalidOnionVersion = fmt.Errorf("invalid onion packet version")

	// ErrInvalidOnionHMAC is returned during onion parsing process, when received
	// mac does not corresponds to the generated one.
	ErrInvalidOnionHMAC = fmt.Errorf("invalid mismatched mac")

	// ErrInvalidOnionKey is returned during onion parsing process, when
	// onion key is invalid.
	ErrInvalidOnionKey = fmt.Errorf("invalid onion key: pubkey isn't on " +
		"secp256k1 curve")

	// ErrLogEntryNotFound is an error returned when a packet lookup in a replay
	// log fails because it is missing.
	ErrLogEntryNotFound = fmt.Errorf("sphinx packet is not in log")
)