{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11258613","patent":{"patent_number":"US-11258613","title":"Method and device for electronic signature","assignee":null,"inventors":[],"filing_date":"2018-04-23T00:00:00.000Z","publication_date":"2022-02-22T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":15,"abstract":"Disclosed are methods and apparatuses for electronic signature. The method for electronic signature comprises obtaining a hash value of a first key created for a user and a user identifier of the user, generating a key certificate of the first key based on the obtained hash value, the user identifier and a current key, recording the key certificate on a public medium, which public medium ensures that information published thereon is not tampered with, signing a file with the first key and recording a resulting file signature and the file on the public medium, and recording the first key on the public medium only after the file is already on the public medium. With the technical solution of the disclosure, a key can be effectively utilized."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for electronic signature","description":"Disclosed are methods and apparatuses for electronic signature. The method for electronic signature comprises obtaining a hash value of a first key created for a user and a user identifier of the user","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11258613","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-11258613","citation_suggestion":"Patentable. \"Method and device for electronic signature\" (US-11258613). https://patentable.app/patents/US-11258613","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11258613","json":"https://patentable.app/api/llm-context/US-11258613","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T09:42:57.166Z"}