The two-volume set LNCS 15577 + 15578 constitutes the proceedings of the 16th International Workshop on Post-Quantum Cryptography, PQCrypto 2025, held in Taipei, Taiwan, during April 8 10, 2025.
The 25 full papers presented in the proceedings were carefully selected and reviewed from 59 submissions. The papers have been organized in the following topical sections:
Part I: Code-Based Cryptography; Multivariate Cryptography; Lattice-Based Cryptography.
Part II: Isogeny-Based Cryptography; Cryptanalysis; Quantum Security; Side-Channel Attacks; Security Notions.
.- Isogeny-Based Cryptography.
.- Efficient Theta-Based Algorithms for Computing ( , )-Isogenies on Kummer Surfaces for Arbitrary Odd .
.- Commuting Ramanujan Graphs and the Random Self-Reducibility of Isogeny Problems.
.- Cryptanalysis.
.- Discrete Gaussian Sampling for BKZ-Reduced Basis.
.- An Efficient Collision Attack on Castryck-Decru-Smith s Hash Function.
.- Heuristic Algorithm for Solving Restricted SVP and its Applications.
.- Cryptanalysis of an Efficient Signature Based on Isotropic Quadratic Forms.
.- Analysis of REDOG: the Pad Thai Attack.
.- Quantum Security.
.- Quantum IND-CPA Security Notions for AEAD.
.- Reducing the Number of Qubits in Solving LWE.
.- Side-Channel Attacks.
.- Single Trace Side-Channel Attack on the MPC-in-the-Head Framework.
.- Et tu, Brute? Side-Channel Assisted Chosen Ciphertext Attacks using Valid Ciphertexts on HQC KEM.
.- Security Notions.
.- Treating Dishonest Ciphertexts in Post-Quantum KEMs Explicit vs Implicit Rejection in the FO Transform.
.- IND-CPAC: A New Security Notion for Conditional Decryption in Fully Homomorphic Encryption.
