{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9725073","patent":{"patent_number":"US-9725073","title":"Method for handling transmission of fraudulent frames within in-vehicle network","assignee":null,"inventors":[],"filing_date":"2016-06-15T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L"],"num_claims":9,"abstract":"An anti-fraud method for use in an in-vehicle network system including a plurality of electronic control units that exchange data frames, each having added thereto a message authentication code (MAC), via at least one bus includes: receiving a data frame transmitted on the bus; generating a first MAC by using a MAC key and a value of a counter that counts the number of times a data frame having added thereto a MAC is transmitted; in a case where the verification has failed, (i) generating as second MAC by using an old MAC key; (ii) re-verifying that the received data frame has added thereto the generated second MAC; transmitting, in a case where the re-verification has succeeded, via the bus a key-update frame indicating a request for updating the MAC key; and updating the MAC key in response to the transmission of the key-update frame."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method for handling transmission of fraudulent frames within in-vehicle network","description":"An anti-fraud method for use in an in-vehicle network system including a plurality of electronic control units that exchange data frames, each having added thereto a message authentication code (MAC),","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9725073","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-9725073","citation_suggestion":"Patentable. \"Method for handling transmission of fraudulent frames within in-vehicle network\" (US-9725073). https://patentable.app/patents/US-9725073","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9725073","json":"https://patentable.app/api/llm-context/US-9725073","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T05:17:35.334Z"}