一种全新的光通信保密机制——光跳频

A Band New Security Mechanism of Fibre Communications-Lightwave Hopping Communication

随着光纤窃听技术逐步发展成熟,光纤通信尤其是海底光缆通信安全正面临严峻挑战。中国科学院半导体研究所提出了一种基于光跳频的通信防护技术来保证光纤通信的安全。应用此技术,海量信息在光发射端被分段交叠加载到不同的光波长信道中,信息段具体被加载到哪个光信道由跳频密钥决定。同时保密信息和海量非保密信息混合在一起传输,保密信息获得更大的隐蔽性。其团队在2010年初步实现了155M的光跳频通信样机。

The safety of fibre communications are facing severe challenge, especially for the undersea optical communications, as the development of the optical network eavesdropping. Institute of Semiconductor of CAS proposed a secure fibre communication technology based on lightwave hopping. With this method, Massive information is cut into pieces and modulated to different optical wavelength channels, and the channel selection of information pieces is controlled by the hopping encryption keys. Meanwhile, the confidential information is mixed into the massive nonconfidential information, gaining a better invisibility. A 155Mbps lightwave hopping communication prototype was achieved by the team of Institute of Semiconductors.