Quantum homomorphic encryption (QHE) is an encryption method that allows quantum computation to be performed on one party's private data with the program provided by another party, without revealing much information about the data nor about the program to the opposite party. https://arxiv.org/abs/1810.01166 The impossible science of quantum-decryption could start with recognition that much of our surrounding reality exists in a virtual homomorphic databank. You find that one-armed man.