{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9781085","patent":{"patent_number":"US-9781085","title":"Device to device security using NAF key","assignee":null,"inventors":[],"filing_date":"2012-02-14T00:00:00.000Z","publication_date":"2017-10-03T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04W","H04W","H04L","H04W","H04W","H04W","H04W"],"num_claims":14,"abstract":"A method, apparatus and computer program product are disclosed for establishing secure off-network communications between first and second Secure Cellular Devices that each have a cellular identity. The second Secure Cellular Device may assume the role of Remote Device for interaction with the NAF keyserver and may obtain a local key. The first Secure Cellular Device may derive the local key and the two devices may conduct secure communications using the shared local key. The two Secure Cellular Devices may alternate the roles of Secure Host and Remote Device, each twice obtaining or deriving a shared local key such that there are two such keys. The devices may employ one key for secure communication in one direction and the other for communication in the other direction. Alternatively, the devices may derive a unique shared key as a function of the two shared keys."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Device to device security using NAF key","description":"A method, apparatus and computer program product are disclosed for establishing secure off-network communications between first and second Secure Cellular Devices that each have a cellular identity. T","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9781085","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-9781085","citation_suggestion":"Patentable. \"Device to device security using NAF key\" (US-9781085). https://patentable.app/patents/US-9781085","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9781085","json":"https://patentable.app/api/llm-context/US-9781085","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T12:20:02.310Z"}