DQ 2: Preventing unauthorised use 

Nuclear weapons need a rigorous control that prevents unauthorised use, and yet, one which still allows for their intended use. What techniques are available to achieve such controls? Bellovin (2009) explores this question. For this Discussion, you will research the technical aspects of preventing unauthorised deployment of nuclear weapons.

References:

Bellovin, S. (2009) Permissive action links [Online]. [updated January, 2015]Available from: http://www.cs.columbia.edu/~smb/nsam-160/pal.html (Accessed: 20 June 2015))

To complete this Discussion: 

Post: Summarise the work of Bellovin and list techniques to prevent the unauthorised deployment of nuclear weapons. Based on this summary, evaluate the potential effectiveness of permissive action link (PAL) for this purpose. Discuss one or two technical aspects in particular.

Words Limit: 500-700