MultimodalKES by evolutionQ is a Multimodal Key Establishment System designed to enhance long-term security and resilience of digital systems against quantum and other threats. It employs a multi-layered approach that combines secrets from multiple cryptographic primitives or modes to derive an end-to-end (E2E) key. This key is engineered to be stronger and more resilient than the sum of its parts, ensuring computational security even if all asymmetric cryptography used in their generation is compromised.