{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8520846","patent":{"patent_number":"US-8520846","title":"Method and device for key generation","assignee":null,"inventors":[],"filing_date":"2009-07-13T00:00:00.000Z","publication_date":"2013-08-27T00:00:00.000Z","cpc_codes":["H04N","H04N","H04N","H04N","H04N"],"num_claims":12,"abstract":"A method of generating a segment key KSmt from a given basic key KmT and a given modification key K′MT in a key space with M*T keys. The basic key KMT is split into two parts LmT, RmT onto which a one-way function is applied M−m and T−t times, respectively, and the results are combined again to form a target basic key. A one-way function is applied to the modification key K′MT a number of times that corresponds to a distance value z between the given basic key and the segment key; in one preferred embodiment z=(M−m)+(T−t). This result is XOR-ed with the target basic key to obtain the segment key KSmtAlso provided is a device."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Method and device for key generation","description":"A method of generating a segment key KSmt from a given basic key KmT and a given modification key K′MT in a key space with M*T keys. The basic key KMT is split into two parts LmT, RmT onto which a one","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8520846","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-8520846","citation_suggestion":"Patentable. \"Method and device for key generation\" (US-8520846). https://patentable.app/patents/US-8520846","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8520846","json":"https://patentable.app/api/llm-context/US-8520846","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T20:31:54.252Z"}