Wednesday, January 26, 2005

[1.26.2005] Faked states attack on quantum cryptosystems

Journal of Modern Optics
Volume 52, Number 5 / March 20, 2005
691 - 705

URL: JMO52.0691,2005
DOI: 10.1080/09500340410001730986

Faked states attack on quantum cryptosystems
Vadim Makarov and Dag R. Hjelme
A1 Department of Electronics and Telecommunications Norwegian University of Science and Technology (NTNU) NO-7491 Trondheim Norway
A new type of attack on quantum cryptography systems is proposed. In this attack, Eve utilizes various optical imperfections in Bob's scheme and constructs light pulses so that Bob does not distinguish his detection results from normal, whereas they give Bob the basis and bit value chosen at Eve's discretion. Applying this attack to systems with passive basis choice on Bob's side is considered. Also, a general workflow of breaking into a running quantum cryptolink using this or Trojan horse attack is discussed.


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