[19p-A32-1~17] 3.9 Optical quantum physics and technologies

4:15 PM - 4:30 PM JST(7:15 AM - 7:30 AM UTC)

[19p-A32-11] Consideration on general individual attack against differential-phase-shift quantum key distribution

〇Kyo Inoue¹, Toshimori Honjo² (1.Osaka Univ., 2.NTT Lab.)

Keywords:

quantum key distribution

Differential-phase-shift (DPS) quantum key distribution (QKD) is a QKD protocol featuring system simplisity. Regarding the security analysis, the key creation rate considering the general individual attack (GIA) was formalized, which has been stnadardly used to evaluate the DPS-QKD system performance. In this presentation, we rise a question regarding the feasibility of the conventional GIA, and propose a modified QIA scheme that solves the question in the conventional GIA.