Learn about advanced encryption techniques in this 26-minute conference talk presented at Eurocrypt 2016. Explore the concepts of Chosen-Plaintext Attack (CPA), Chosen-Ciphertext Attack (CCA), and tight security in encryption. Examine prior works on CCA-secure encryption and gain insights into a new construction approach. Delve into topics such as tag-based encryption, Damgård El Gamal encryption, and Cramer Shoup encryption. Follow the presenters' proof sketch and understand the implications of their findings for tightly CCA-secure encryption without pairings.
Overview
Syllabus
Intro
Security of encryption
Chosen-Plaintext Attack (CPA)
Chosen-Ciphertext Attack (CCA)
Tight security
Prior works: CCA-secure encryption
Overview of our construction
Tag-based encryption
Outline
Damgård El Gamal encryption
Cramer Shoup encryption
Our approach
Proof sketch
Conclusion
Taught by
TheIACR
