Key Derivation Functions Using the Dual Key Agreement Based on QKD and RSA Cryptosystem

Abstract

For a secure communication system, it is necessary to use secure cryptographic algorithms and keys. Modern cryptographic system generates high entropy encryption key through standard key derivation functions. Using recent progress in quantum key distribution(QKD) based on quantum physics, it is expected that we can enhance the security of modern cryptosystem. In this respect, the study on the dual key agreement is required, which combines quantum and modern cryptography. In this paper, we propose two key derivation functions using dual key agreement based on QKD and RSA cryptographic system. Furthermore, we demonstrate several simulations that estimate entropy of derived key so as to support the design rationale of our key derivation functions.

Efficient hardware implementation and analysis of true random‐number generator based on beta source

“…The spontaneous decay of radioisotopes has the advantage of being able to produce small-scale and mass-produced products that are not affected by the randomness of the decay events and the random number generated, and the change in the physical environment. Intrinsic random-number generators have been constructed using quantum mechanical random phenomena and specifically, the natural decay of radioisotopes [12][13][14]. In particular, beta source-based random-number generation shows the advantages of small size, portable line, high speed, mass production, low generation rate, and low semiconductor damage compared with that based on alpha sources, as indicated in Table 1.…”