X is certainly not post-quantumn cryptography. You need to look at all elements of claim 1. IN particular, "wherein the first refresh key is generated on the f

X is certainly not post-quantumn cryptography. You need to look at all elements of claim 1. IN particular, "wherein the first refresh key is generated on the first device based at least in part on the first public key and the root state, wherein the first refresh key is generated on the first device without requiring a private key corresponding to the first epoch key, and" . . . "wherein the first state is generated on the first device without requiring a private key corresponding to the first epoch key, and wherein, the first state is generated on the second device based at least in part on the first private key, the first epoch key, and the root state;" and . . . "wherein, on each of the first device and the second device, the first message key is generated based at least in part on the first state and the first refresh key;"