{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-8499157","patent":{"patent_number":"US-8499157","title":"Device-based password management","assignee":null,"inventors":[],"filing_date":"2010-09-29T00:00:00.000Z","publication_date":"2013-07-30T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04L","H04W","H04W"],"num_claims":24,"abstract":"A first device (e.g. smartphone) manages a first key (e.g. password) required for a security operation with a second device (e.g., WWW server) by calculating and storing a key seed using the first key and a second key shared with a third device (e.g., wireless headset). Later (e.g., upon losing communication with the third device), at least a portion of the first and second keys is/are erased to prevent the security operation. Subsequently (e.g., when communication with third device is reestablished), the first key is regenerated by (1) receiving a key hint from the third device, (2) regenerating the second key using the key hint and a known message used to create the key hint, and (3) regenerating the first key using the key seed and the regenerated second key."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Device-based password management","description":"A first device (e.g. smartphone) manages a first key (e.g. password) required for a security operation with a second device (e.g., WWW server) by calculating and storing a key seed using the first key","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-8499157","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-8499157","citation_suggestion":"Patentable. \"Device-based password management\" (US-8499157). https://patentable.app/patents/US-8499157","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-8499157","json":"https://patentable.app/api/llm-context/US-8499157","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-30T18:02:25.524Z"}