ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,750,205, issued on Sept. 29, was assigned to Crypto Lab Inc. (Seoul, South Korea) and Seoul National University R&DB Foundation (Seoul, South Korea).
"Practical sorting on large-scale encrypted data" was invented by Jung Hee Cheon (Seoul, South Korea) and Seungwan Hong (Seoul, South Korea).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for processing homomorphic ciphertexts includes: receiving an input of an instruction for sorting regarding a plurality of homomorphic ciphertexts; sorting the plurality of homomorphic ciphertexts by using a sorter which can sort 3 more homomorphic ciphertexts in a single stage; and outputting the sorting result....