{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8490164","patent":{"patent_number":"US-8490164","title":"User authentication method, user authenticating device and program product","assignee":null,"inventors":[],"filing_date":"2007-03-21T00:00:00.000Z","publication_date":"2013-07-16T00:00:00.000Z","cpc_codes":["G06F"],"num_claims":20,"abstract":"An authenticating device communicating with a server device includes: a dividing unit that divides secret information into plural secret fragments by a threshold secret sharing scheme; a first generating unit that generates plural cryptographic fragments by encrypting the secret fragments using first plural passwords; a first transmitting unit that transmits the cryptographic fragments to the server device; a first receiving unit that receives the cryptographic fragments from the server device, a second generating unit that generates plural secret fragment candidates by decrypting the cryptographic fragments using second plural passwords; a third generating unit that obtains a verifying information candidate by the threshold secret sharing scheme using a group of the secret fragment candidates; a second transmitting unit that transmits the verifying information candidate to the server device; and a second receiving unit that receives result information of comparing the verifying information candidate with verifying information in the server device."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"User authentication method, user authenticating device and program product","description":"An authenticating device communicating with a server device includes: a dividing unit that divides secret information into plural secret fragments by a threshold secret sharing scheme; a first generat","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8490164","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-8490164","citation_suggestion":"Patentable. \"User authentication method, user authenticating device and program product\" (US-8490164). https://patentable.app/patents/US-8490164","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8490164","json":"https://patentable.app/api/llm-context/US-8490164","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T19:51:07.543Z"}