>Some months ago I started an 8 core Mac Pro machine at work on breaking this key. It ran for 70 days non-stop and was close to a break when I had to use the ma

>Some months ago I started an 8 core Mac Pro machine at work on breaking this key. It ran for 70 days non-stop and was close to a break when I had to use the machine for something else. Might also be not true, or the author did find the key but doesn't want to get into any legal trouble. >If I can do that, pretty much anyone can. And those people will be able to forge mail from Facebook. Facebook has a simple solution, of course, just change the key length. When that happens, Facebook changes the key, problem solved. >The owner of a spam botnet could factor keys like that very quickly. Imagine having a few thousand machines that can be used for key factoring. Or just paying for a dozen of EC2 instanced for a week (not sure how parallel this thing is, but I assume you could distribute it somehow).