decrypt
fun decrypt(packet: ByteArray, sharedSecrets: SharedSecrets): Try<DecryptedFailurePacket>
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Decrypt a failure packet. Node shared secrets are applied until the packet's MAC becomes valid, which means that it was sent by the corresponding node. Note that malicious nodes in the route may have altered the packet, triggering a decryption failure.
Return
Success(secret, failure message) if the origin of the packet could be identified and the packet decrypted, Failure otherwise.
Parameters
packet
failure packet.
shared
nodes shared secrets.