Versatile quantum-safe hybrid key exchange and its application to MACsec Jaime S. Buruaga, Augustine Bugler, Juan P. Brito, Vicente Martin and Christoph Striecks EPJ Quantum Technol., 12 1 (2025) 84 Published online: 04 July 2025 DOI: 10.1140/epjqt/s40507-025-00382-x