News, notes, tips and tricks from the Google App Engine Team At Google, we've learned through experience to treat everything with healthy skepticism. We expect that servers, racks, shared GFS cells, and even entire datacenters will occasionally go down, sometimes with little or no warning. This has led us to try as hard as possible to design our products to run on multiple servers, multiple cells,
A Lesson In Timing Attacks (or, Don’t use MessageDigest.isEquals) 13 Aug 2009 Timing attacks are pretty horrible from the perspective of someone trying to write a secure cryptosystem. They work against a programmer’s best instincts—don’t do extra work—to give an attacker with access to a Statistics 101 textbook a good solid grip on your application’s guts. How the hell does that work? In short, a
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