A chaos-based quantum group signature scheme in quantum cryptosystem
Xiao-ping Lou , Zhi-gang Chen , Moon Ho Lee
Journal of Central South University ›› 2015, Vol. 22 ›› Issue (7) : 2604 -2611.
A chaos-based quantum group signature scheme in quantum cryptosystem
A quantum group signature (QGS) scheme is proposed on the basis of an improved quantum chaotic encryption algorithm using the quantum one-time pad with a chaotic operation string. It involves a small-scale quantum computation network in three phases, i.e. initializing phase, signing phase and verifying phase. In the scheme, a member of the group signs the message on behalf of the group while the receiver verifies the signature’s validity with the aid of the trusty group manager who plays a crucial role when a possible dispute arises. Analysis result shows that the signature can neither be forged nor disavowed by any malicious attackers.
group signature / chaotic encryption / quantum entanglement / quantum cryptography
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