The two-volume set LNCS 10174 and 10175 constitutes the refereed proceedings of the 20th IACR
International Conference on the Practice and Theory in Public-Key Cryptography PKC 2017 held
in Amsterdam The Netherlands in March 2017. The 34 revised papers presented were carefully
reviewed and selected from 160 submissions. They are organized in topical sections such as
Cryptanalysis Protocols Encryption Schemes Leakage-Resilient and Non-Malleable Codes Number
Theory and Diffie-Hellman Encryption with Access Control Special Signatures Fully
Homomorphic Encryption Real-World Schemes Multiparty Computation and Primitives.