ALEXANDRIA, Va., June 25 -- United States Patent no. 12,341,871, issued on June 24.

"Practical itemized encryption for cryptographic erasure (PIECE)" was invented by Jeffrey J. Stapleton (O'Fallon, Mo.).

According to the abstract* released by the U.S. Patent & Trademark Office: "The arrangements disclosed herein relate to systems, apparatus, methods, and non-transitory computer readable media for determining to erase a plurality of ciphertext blocks stored in a memory device, in response to determining to erase the plurality of ciphertext blocks, performing a cryptographic erasure of the plurality of ciphertext blocks. The cryptographic erasure includes encrypting each of the plurality of ciphertext blocks with a random key and destroying...