A book about achievements and open problems discussed in Crypto-Math CREST Project was published in 2025. Mathematical Foundations for Post-Quantum Cryptography, Crypto-Math CREST, Mathematics for Industry, 40, Springer, 2025. Editors: Tsuyoshi Takagi, Masato Wakayama, Noboru Kunihiro, Keisuke Tanaka, Kazufumi Kimoto, Momonari Kudo