{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9832020","patent":{"patent_number":"US-9832020","title":"Cryptographic protocol for portable devices","assignee":null,"inventors":[],"filing_date":"2016-08-01T00:00:00.000Z","publication_date":"2017-11-28T00:00:00.000Z","cpc_codes":["H04L","G06Q","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04W","H04W","H04W","H04W","H04W","H04W","H04L","H04W","H04W"],"num_claims":20,"abstract":"Embodiments are directed towards communicating using a mobile device that performs actions including. A mobile device may be provisioned with an access point such that a provisioning key and a provisioning token for each of the provisioned access points may be stored on the mobile device. The mobile device may be determined to be in the presence of a provisioned access point based on the provisioning key and an advertising nonce. The advertising nonce may be encrypted with the provisioning key. A communication channel between the mobile device and the access point may be established based on a session nonce, the advertising nonce, and the provisioning key. A session key may be generated based in part on the advertising nonce and a message counter. And, encrypted message packets that include a message and a message authentication tag may be communicated to the access point."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Cryptographic protocol for portable devices","description":"Embodiments are directed towards communicating using a mobile device that performs actions including. A mobile device may be provisioned with an access point such that a provisioning key and a provisi","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9832020","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-9832020","citation_suggestion":"Patentable. \"Cryptographic protocol for portable devices\" (US-9832020). https://patentable.app/patents/US-9832020","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9832020","json":"https://patentable.app/api/llm-context/US-9832020","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T04:59:24.341Z"}