http://www.rediff.com/computer/1999/jul/09suri.htm
"How exactly does your encryption software differ from existing US
products?"
"My software has the capacity to allow layering and multiple layering
encryption," Suri says.
I wait, with raised eyebrows, hoping for more details...
"Well, I have not been able to get the technical data for PGP or other
encryption software. These companies don't give much technical information
about their products. You have to buy their products to get any real
knowledge about them," is Suri's excuse.