A trade-off between classical and quantum circuit size for an attack against CSIDH. - Jean-François Biasse; Xavier Bonnetain; Benjamin Pring; André Schrottenloher; William Youmans (J. Math. Cryptol., 2021)

An algorithm for solving the principal ideal problem with subfields. - Jean-François Biasse; Claus Fieker; Tommy Hofmann; William Youmans (Adv. Math. Commun., 2024)

An algebraic algorithm for breaking NTRU with multiple keys. - Shi Bai 001; Hansraj Jangir; Tran Ngo; William Youmans (Des. Codes Cryptogr., 2024)

A Quasi-polynomial Time Algorithm for the Extrapolated Dihedral Coset Problem over Power-of-Two Moduli. - Shi Bai 001; Hansraj Jangir; Elena Kirshanova; Tran Ngo; William Youmans (IACR Cryptol. ePrint Arch., 2025)