{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11503473","patent":{"patent_number":"US-11503473","title":"Updating a subscriber identity module","assignee":null,"inventors":[],"filing_date":"2019-07-01T00:00:00.000Z","publication_date":"2022-11-15T00:00:00.000Z","cpc_codes":["H04W","H04W","H04L","H04W","H04W","H04W","H04W","H04W","H04L","H04W","H04W"],"num_claims":20,"abstract":"Updating a subscriber identity module, SIM, on a host device by deriving a pre-shared key by requesting a SIM identifier via communication module of the host device; receiving SIM identifier and deriving an agent identifier from SIM identifier; transmitting agent and SIM identifiers to SIM update server; receiving a random value from SIM update server and supplying it to the SIM to initiate SIM authentication procedure. In reply, receiving an authentication response from the SIM; and deriving pre-shared key from authentication response; transmitting an update request message to SIM update server, wherein the update request message comprises the agent identifier and is encrypted before transmission using the pre-shared key; receiving an update response message from the SIM update server which has update data and is encrypted using pre-shared key; and following decryption of update response message using derived pre-shared key, transmitting update data to communication module."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Updating a subscriber identity module","description":"Updating a subscriber identity module, SIM, on a host device by deriving a pre-shared key by requesting a SIM identifier via communication module of the host device; receiving SIM identifier and deriv","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11503473","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-11503473","citation_suggestion":"Patentable. \"Updating a subscriber identity module\" (US-11503473). https://patentable.app/patents/US-11503473","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11503473","json":"https://patentable.app/api/llm-context/US-11503473","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T23:30:04.876Z"}