The authors also proposed two ownership transfer protocols
(OTP), where each tag may communicate with one or more
readers [12]. The first protocol assumes the existence of a
trusted authority by both the reader and the tags, called the
Trusted Third Party (TTP). The second ownership transfer
protocol involves no third party, instead, asymmetric communication
between the reader and the tag is assumed. The
authenticated reader that accesses the tag is called as owner.
Both ownership protocols work under the following assumptions: