On securing untrusted clouds with cryptography
Yao Chen, Radu Sion · 2010
In a recent interview, Whitfield Diffie argued that "the whole point of cloud computing is economy" and while it is possible in principle for "computation to be done on encrypted data, [...] current techniques would more than undo the economy gained by the outsourcing and show little sign of becoming practical". Here we explore whether this is truly the case and quantify just how expensive it is to secure computing in untrusted, potentially curious clouds.