Re: Ia's Recent Post

In Ia's recent post, she mentioned the following (regarding secure multicasting):

"Minimal Set of Security Requirements:

• Confidentiality
• Authenticity
• Traffic backward secrecy: newcomers should not be able to read former traffic
• Traffic forward secrecy: former members should not be able to read present & future traffic"

Of the last two, I believe only the fourth one concerns us. For example, when a "subscriber" ceases to be in the Telco's official list of paying members, he should not be able to access any new video streams or the video archives (same w/ an e-group). However, when a new subcriber joins the list of paying members, he/she should be able to view past videos, so item #3 isn't a problem for us (this actually depends on the Telco's strategy; but then, the catch-phrase "Over 10 gigs of stored videos of your favorite Pinoy stars, ready for your downloading!" to potential subscribers will prove to be very attractive.

Guys, what do you think?