{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9727720","patent":{"patent_number":"US-9727720","title":"Challenge-response authentication using a masked response value","assignee":null,"inventors":[],"filing_date":"2012-11-30T00:00:00.000Z","publication_date":"2017-08-08T00:00:00.000Z","cpc_codes":["G06F","H04L","H04L","H04L","G06F"],"num_claims":11,"abstract":"Challenge-response authentication protocols are disclosed herein, including systems and methods for a first device to authenticate a second device. In one embodiment, the following operations are performed by the first device: (a) sending to the second device: (i) a challenge value corresponding to an expected response value known by the first device, and (ii) a hiding value; (b) receiving from the second device a masked response value; (c) obtaining an expected masked response value from the expected response value and the hiding value; and (d) determining whether the expected masked response value matches the masked response value received from the second device. The operations from the perspective of the second device are also disclosed, which in some embodiments include computing the masked response value using the challenge value, the hiding value, and secret information known to the second device."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Challenge-response authentication using a masked response value","description":"Challenge-response authentication protocols are disclosed herein, including systems and methods for a first device to authenticate a second device. In one embodiment, the following operations are perf","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9727720","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-9727720","citation_suggestion":"Patentable. \"Challenge-response authentication using a masked response value\" (US-9727720). https://patentable.app/patents/US-9727720","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9727720","json":"https://patentable.app/api/llm-context/US-9727720","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T15:30:15.032Z"}