10 July 2013

Protecting Data in the Cloud

MIT News (07/02/13) Larry Hardesty

Massachusetts Institute of Technology (MIT) researchers have developed Ascend, a type of secure hardware component that can disguise a server's memory-access patterns, making it impossible for an attacker to infer anything about the data being stored. Ascend also stops timing attacks, which attempt to infer information from the amount of time that computations take. "This is the first time that any hardware design has been proposed--it hasn’t been built yet--that would give you this level of security while only having about a factor of three or four overhead in performance," says MIT professor Srini Devadas. The system involves arranging memory addresses in a data structure known as a tree. Every node in the tree lies along some path that starts at the top and passes from node to node, without backtracking, until arriving at a node with no further connections. Ascend prevents attackers from inferring anything from sequences of memory access by randomly swapping that address with one stored somewhere else in the tree. Therefore, accessing a single address multiple times will very rarely require traversing the same path.

3 comments:

Unknown said...

ninest123 08.13
coach outlet store online, jordan shoes, replica watches, christian louboutin uk, michael kors outlet online, gucci handbags, burberry handbags, burberry outlet, nike air max, coach purses, ray ban sunglasses, michael kors outlet online, coach outlet, tiffany jewelry, michael kors outlet, kate spade outlet, kate spade, polo outlet, prada outlet, michael kors outlet, tory burch outlet, tiffany and co, true religion outlet, longchamp outlet, michael kors outlet online, christian louboutin shoes, oakley sunglasses wholesale, ray ban sunglasses, christian louboutin outlet, oakley sunglasses, longchamp outlet, nike outlet, nike free, coach outlet, prada handbags, longchamp outlet, christian louboutin, chanel handbags, michael kors outlet store, polo ralph lauren outlet online, oakley sunglasses, nike air max

Unknown said...

polo ralph lauren, nike free uk, nike tn, burberry pas cher, timberland pas cher, polo lacoste, mulberry uk, michael kors outlet, nike air force, jordan pas cher, true religion outlet, ray ban pas cher, nike free run, lululemon canada, guess pas cher, sac longchamp pas cher, michael kors pas cher, true religion jeans, nike air max, hollister uk, abercrombie and fitch uk, ralph lauren uk, louboutin pas cher, nike air max uk, hogan outlet, north face, hollister pas cher, new balance, air max, north face uk, oakley pas cher, ray ban uk, sac hermes, true religion outlet, vans pas cher, nike blazer pas cher, sac vanessa bruno, nike air max uk, michael kors, converse pas cher, nike roshe, longchamp pas cher

Unknown said...

lancel, ralph lauren, juicy couture outlet, louboutin, ray ban, toms shoes, replica watches, swarovski, thomas sabo, ugg pas cher, coach outlet, ugg boots, links of london, hollister, uggs outlet, karen millen uk, pandora jewelry, uggs on sale, nike air max, converse, montre pas cher, pandora uk, supra shoes, ugg,ugg australia,ugg italia, juicy couture outlet, wedding dresses, pandora charms, hollister, uggs outlet, converse outlet, vans, ugg boots, ugg uk, swarovski crystal, marc jacobs, ugg, ugg,uggs,uggs canada, gucci
ninest123 08.13