TrustSearch: Toward Secure and Efficient Reverse Image Search via SGX

TrustSearch is a system that performs reverse image search (finding similar images in a database) on encrypted data stored in the cloud while protecting user privacy. It uses Intel SGX (a trusted execution environment, which is a secure area on a processor where sensitive operations can run protected from outside access) to search images without decrypting them, but had to optimize its design because SGX has limited memory and processing resources.