Quantum secret key encryption algorithm based on quantum discrete logarithm problem
Abstract
In this paper, we first define the quantum discrete logarithm problem (QDLP)which is similar to classical discrete logarithm problem. But, this problem cannot be solved by Shor's quantum algorithm. Based on quantum discrete logarithm problem, we present a novel quantum secret key encryption algorithm. The receiver constructs his quantum channel using their secret key. Then, the sender can use the receiver's quantum channel to encrypt the message. Finally, the receiver dencrypts the ciphertext by using secret key. In our algorithm, the quantum system will be broken after transferring messages. But, the secret key can still be used repeatedly in our algorithm.
 Publication:

arXiv eprints
 Pub Date:
 August 2004
 arXiv:
 arXiv:quantph/0408112
 Bibcode:
 2004quant.ph..8112C
 Keywords:

 Quantum Physics
 EPrint:
 13 pages