This 2-volume set LNCS 15495-15496 constitutes the refereed proceedings of the 25th International Conference on Cryptology in India, held in Chennai, India, during December 18-21, 2024.

The 31 full papers presented in these proceedings were carefully reviewed and selected from 96 submissions.

They are organized into these topical sections:

Part I: Foundations; symmetric-key cryptography; cryptographic constructions; and quantum cryptography.

Part II: Cryptanalysis; post-quantum cryptography; and blockchain and cloud computing.