Some browsers and also #OPenSSL 3.5.0 support already #PQ #KEMs for key exchange to to provide secure key establishment resistance.

The (real soon now) to be released testssl.sh 3.2 final will include handshake simulation, see last column:

Accelerating The Adoption of Post-Quantum Cryptography with PHP

https://paragonie.com/blog/2025/02/accelerating-adoption-post-quantum-cryptography

#PHP #crypto #cryptography #HPKE #KEMs #MLKEM #MLDSA #SLHDSA #postquantum #programming #webdev #MLS #rfc9180 #rfc9420