The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2026
Filed:
Aug. 22, 2023
Circle Internet Group, Inc., Boston, MA (US);
Vipin Singh Sehrawat, Fremont, CA (US);
Circle Internet Group, Inc., Boston, MA (US);
Abstract
Certain aspects of the disclosure provide a method for verifiable key rotation of an encryption key. The method includes generating a ciphertext by encrypting a plaintext with a homomorphic probabilistic encryption scheme based on a first key. The method further includes generating an updating token based on a difference between the homomorphic probabilistic encryption scheme based on a second key and generating a second ciphertext by encrypting the first ciphertext with the updating token. The method further includes validating the key rotation by selecting a set of second ciphertext blocks from the second ciphertext; reverting the set of second ciphertext blocks with the updating token to a set of third ciphertext blocks; and computing a Hamming distance between blocks of the set of second ciphertext blocks and the corresponding set of third ciphertext blocks.