On: Escaping Data from Faraday-Caged, Air-Gapped Compu...

[jloughry]

The details of the DES encryption vulnerability are all in our paper; it's behind a paywall but you can find it on my web site:

J. Loughry and D.A. Umphress. 'Information Leakage from Optical Emanations'. ACM Trans. Info. Sys. Sec. 5(3), pp. 262–289, 2002.

Available for free from http://applied-math.org/acm_optical_tempest.pdf