Dual channel authentication in cryptography using quantum stratagem

A quantum digital authentication scheme based on hash function is proposed in this paper. The security of the quantum protocol lies on the existence of quantum one way function by fundamental quantum principle. The practical difficulties in quantum control and quantum computation made quantum protocol hard to implement. Lack of authentication made the quantum protocol vulnerable to hackers. By introducing two level quantum system, authentications can be achieved with the help of hash function. To guarantee the authenticity, hash codes are split in to two parts and exchange of code is made through two quantum channels. This scheme uses a programmable polarizer ensuring the quantum one way function and removing the practical difficulties of quantum control and quantum computation. The proposed scheme presents a novel method to construct secure quantum authentication for future communication.