{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9660981","patent":{"patent_number":"US-9660981","title":"Strong authentication method","assignee":null,"inventors":[],"filing_date":"2014-06-30T00:00:00.000Z","publication_date":"2017-05-23T00:00:00.000Z","cpc_codes":["H04L","G06F","H04L","H04L","H04L","H04L","H04L","G06F"],"num_claims":11,"abstract":"The present invention relates to a method of authenticating, with an authentication server, a user having at his disposal a calculator storing at least one unique identifier specific to the calculator and one first secret key (KO) and calculating a non-invertible function (H); the method comprising: •reception of the unique identifier by the authentication server, which sends an item of information (challenge) and an action code; •reception by the authentication server of three results of the non-invertible function, •the first result (R0) depending on at least one item of data specific to a unique or quasi-unique element of the calculator (SN); •the second result (RT) depending on a Turing test, conditioned to the action code, carried out by the user; and •the third result (R1) depending on a second secret key (K1); •authentication of the user if all four of the unique identifier and the first, second and third results are valid."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Strong authentication method","description":"The present invention relates to a method of authenticating, with an authentication server, a user having at his disposal a calculator storing at least one unique identifier specific to the calculator","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9660981","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-9660981","citation_suggestion":"Patentable. \"Strong authentication method\" (US-9660981). https://patentable.app/patents/US-9660981","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9660981","json":"https://patentable.app/api/llm-context/US-9660981","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T11:41:29.001Z"}