Explore a groundbreaking conference talk from Crypto 2016 that addresses the circuit size barrier in secure computation under the Decisional Diffie-Hellman (DDH) assumption. Delve into topics such as fully homomorphic encryption, function secret sharing, and homomorphic secret sharing. Learn about restricted multiplication, morphic evaluation, and share conversion procedures. Examine the implications for encryption, circular security, and secure two-party computation. Conclude with reflections on the research and consider open questions in the field of cryptography.