{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11956355","patent":{"patent_number":"US-11956355","title":"Control device, industrial control system, and encryption key life extension method","assignee":null,"inventors":[],"filing_date":"2019-10-16T00:00:00.000Z","publication_date":"2024-04-09T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L"],"num_claims":10,"abstract":"The control device is configured to communicate with another device via a communication network, and comprises: a key acquisition unit configured to acquire, from a key distribution server via the communication network, an encryption key with a life period for performing encrypted communication with the another device; an encrypted communication processing unit configured to perform the encrypted communication with the another device using the encryption key within the life period; a server state detection unit configured to detect a key acquisition disabled state where acquisition of the encryption key by the key acquisition unit is disabled; and a life extension unit configured to perform extension processing for extending the life period if the key acquisition disabled state is detected."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Control device, industrial control system, and encryption key life extension method","description":"The control device is configured to communicate with another device via a communication network, and comprises: a key acquisition unit configured to acquire, from a key distribution server via the com","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11956355","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-11956355","citation_suggestion":"Patentable. \"Control device, industrial control system, and encryption key life extension method\" (US-11956355). https://patentable.app/patents/US-11956355","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11956355","json":"https://patentable.app/api/llm-context/US-11956355","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T12:36:42.628Z"}