Hybrid Public Key Encryption is a new standard which got finalized in February 2022. It uses asymmetric encryption to transfer a symmetric key between two participants which is then used to encrypt the communication. The standard itself is not post-quantum resistant. The presentation explains how to make it post-quantum resistant. Please note that this is a late addition to the schedule, and the programme because the presenter Naveen Srinivasan of previously selected talk "How do you trust your open source software?" was not able to attend on the last minute.