Covert Learning: How to Learn with an Untrusted Intermediary.- Random-Index PIR and Applications.- Forward Secret Encrypted RAM: Lower Bounds and Applications.- Laconic Private Set Intersection and Applications.- Amortizing Rate-1 OT and Applications to PIR and PSI.- Ring-based Identity Based Encryption { Asymptotically Shorter MPK and Tighter Security.- Cryptographic Shallots: A Formal Treatment of Repliable Onion Encryption.- Grafting Key Trees: Efficient Key Management for Overlapping Groups.- Updatable Public Key Encryption in the Standard Model.- Towards Tight Adaptive Security of Non-Interactive Key Exchange.- On the Impossibility of Purely Algebraic Signatures.- Policy-Compliant Signatures.- Simple and Efficient Batch Verification Techniques for Verifiable Delay Functions.- Non-Malleable Vector Commitments via Local Equivocability.- Non-Malleable Time-Lock Puzzles and Applications.- Vector and Functional Commitments from Lattices.-