Secret Information Transmission and Sharing Techniques Based on Radio Wave Propagation Characteristics
نویسندگان
چکیده
あらまし 電波伝搬特性を活用して秘密情報を送受信間で他者に知られることなく伝送・共有する技術につい て,特に電波伝搬の観点から述べる.まず最初に,将来のユビキタスネットワークにおける本技術の位置付けに ついて示す.次に,秘密情報の伝送・共有に電波伝搬特性を活用する方式の基本原理を示す.また,情報理論の 情報量の概念を用いてこの手法の特性を明らかにする.そして,これまで既に研究が行われている電波伝搬特性 に基づいて通信を暗号化するための暗号鍵を生成する方法について紹介する.その実現例の原理を示し,具体的 な秘密情報伝送・共有の特性について明らかにする.このような電波伝搬特性を活用した秘密情報伝送・共有技 術に対しては,他者からの情報盗聴の試み(アタック)に対する耐性が重要となる.このようなアタックについ て電波伝搬的な手法の一例を示し,その実現可能性及び推定性能について示す.最後に,電波伝搬特性を活用し たその他の秘密情報の伝送・共有技術について簡単に触れる. キーワード 電波伝搬,空間相関,セキュリティ,秘密鍵共有
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تاریخ انتشار 2007