Multi Party Computation Motivated by the Birthday Problem

Keywords: ecure multi-party computation, birthday paradox, privacy-preserving, communication complexity


Suppose there are n people in a classroom and we want to decide if there are two of them who were born on the same day of the year. The well-known birthday paradox is concerned with the probability of this event and is discussed in many textbooks on probability. In this paper we focus on cryptographic aspects of the problem: how can we decide if there is a collision of birthdays without the participants disclosing their respective date of birth. We propose several procedures for solving this in a privacy-preserving way and compare them according to their computational and communication complexity.


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How to Cite
Hudoba, P., & Burcsi, P. (2019). Multi Party Computation Motivated by the Birthday Problem. Acta Cybernetica, 24(1), 29-41.
Special Issue of the 11th Conference of PhD Students in Computer Science