  We present a scheme for teleporting an unknown, two-particle entangled state
with a message from a sender (Alice) to a receiver (Bob) via a six-particle
entangled channel. We also present another scheme for teleporting an unknown
one-particle entangled state with a message transmitted in a two-way form
between the same sender and receiver via a five-qubit cluster state. One-way
hash functions, Bell-state measurements, and unitary operations are adopted in
these two schemes. Our schemes use the physical characteristics of quantum
mechanics to implement delegation, signature, and verification processes.
Moreover, a quantum key distribution protocol and a one-time pad are adopted in
these schemes.
