{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9641494","patent":{"patent_number":"US-9641494","title":"Method and apparatus for handling keys used for encryption and integrity","assignee":null,"inventors":[],"filing_date":"2015-07-03T00:00:00.000Z","publication_date":"2017-05-02T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04W","H04L","H04W"],"num_claims":8,"abstract":"A method and an arrangement for providing keys for protecting communication between a terminal (300) and service points in a communication network. A basic key (Ik) is first established with a service control node (304) when the terminal has entered the network. An initial modified key (Ik1) is then created in both the service control node and the terminal, by applying a predetermined first function (f) to at least the basic key and an initial value of a key version parameter (v). The initial modified key is sent to a first service point (302), such that it can be used to protect communication between the terminal and the first service point. When the terminal switches to a second service point (306), the first service point and the terminal both create a second modified key (Ik2) by applying a predetermined second function (g) to the initial modified key, and the first service point sends the second modified key to the second service point."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and apparatus for handling keys used for encryption and integrity","description":"A method and an arrangement for providing keys for protecting communication between a terminal (300) and service points in a communication network. A basic key (Ik) is first established with a service","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9641494","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-9641494","citation_suggestion":"Patentable. \"Method and apparatus for handling keys used for encryption and integrity\" (US-9641494). https://patentable.app/patents/US-9641494","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9641494","json":"https://patentable.app/api/llm-context/US-9641494","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T10:22:20.593Z"}