{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11277256","patent":{"patent_number":"US-11277256","title":"Ciphertext comparison method using homomorphic encryption and apparatus for performing the same","assignee":null,"inventors":[],"filing_date":"2019-10-23T00:00:00.000Z","publication_date":"2022-03-15T00:00:00.000Z","cpc_codes":["H04L","H04L"],"num_claims":6,"abstract":"A ciphertext comparison method uses homomorphic encryption. An apparatus performs the ciphertext comparison method using the homomorphic encryption. The ciphertext comparison method using homomorphic encryption includes acquiring a first ciphertext obtained by encrypting first real-number data using a homomorphic evaluation algorithm and a second ciphertext obtained by encrypting second real-number data using the homomorphic evaluation algorithm, and generating a ciphertext for a result for comparison in size between the first real-number data and the second real-number data using homomorphic evaluation for the first ciphertext, the second ciphertext, and an approximation function for approximating a signum function."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Ciphertext comparison method using homomorphic encryption and apparatus for performing the same","description":"A ciphertext comparison method uses homomorphic encryption. An apparatus performs the ciphertext comparison method using the homomorphic encryption. The ciphertext comparison method using homomorphic ","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11277256","license":"CC-BY-4.0-like","license_terms":"AI-generated analysis on this page (summary, layman_explanation, technical_analysis, business_analysis, faqs) may be reused with attribution and a visible link back to the canonical URL above. Patent abstracts, claims, and bibliographic data are USPTO public domain.","required_link":"https://patentable.app/patents/US-11277256","citation_suggestion":"Patentable. \"Ciphertext comparison method using homomorphic encryption and apparatus for performing the same\" (US-11277256). https://patentable.app/patents/US-11277256","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11277256","json":"https://patentable.app/api/llm-context/US-11277256","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T13:46:03.540Z"}