Public-Key Cryptography PKC 2025

The five-volume set LNCS 15674-15678 constitutes the refereed proceedings of the 28th IACR International Conference on Practice and Theory of Public Key Cryptography, PKC 2025, held in Røros, Norway, during May 1215, 2025.
The 60 papers included in these proceedings were carefully reviewed and selected from 199 submissions. They are grouped into these topical sections: MPC and friends; advanced PKE; security of post-quantum signatures; proofs and arguments; multi-signatures; protocols; foundations of lattices and LPN; threshold signatures; isogenies and group actions; secure computation; security against real-world attacks; batch arguments and decentralized encryption; and cryptography for blockchains.

Inhalt

Advanced PKE: Tight Adaptive Simulation Security for Identity-based Inner-Product FE in the (Quantum) Random Oracle Model.- Predicate Encryption from Lattices: Enhanced Compactness and Refined Functionality.- Multi-Client Functional Encryption with Public Inputs and Strong Security.- Key Revocation in Registered Attribute-Based Encryption. Threshold Signatures: BUFFing Threshold Signature Schemes.- Finally! A Compact Lattice-Based Threshold Signature.- Commit-and-Prove System for Vectors and Applications to Threshold Signing.- Dazzle: Improved Adaptive Threshold Signatures from DDH. Isogenies and Group Actions: Radical 2-isogenies and cryptographic hash functions in dimensions 1, 2 and 3.- PRISM: Simple And Compact Identification and Signatures From Large Prime Degree Isogenies.- Faster SCALLOP from Non-Prime Conductor Suborders in Medium Sized Quadratic Fields.- Multiple Group Action Dlogs with(out) Precomputation.