Signal uses SGX, with a reproducible build and (near) constant memory-access patterns, for ZK contact discovery:https://signal.org/blog/private-contact-discovery/ …
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Pretty sure there's a hardware limit, and that pages memory in and out of encrypted RAM, right?
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64GB is the largest I’ve seen, however the Linux SDK supports paging and is not bound by Enclave Page Cache size: https://software.intel.com/en-us/forums/intel-software-guard-extensions-intel-sgx/topic/702786 …
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Are you worried about paging sidechannels leaking information? Seems possible at least...
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More that it's not clear having the big list in the EPC helps with the underlying problem, and paging would potentially reduce perf.
5:22 PM - 26 Sep 2017
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