{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-11973887","patent":{"patent_number":"US-11973887","title":"Chain of authentication using public key infrastructure","assignee":null,"inventors":[],"filing_date":"2021-09-10T00:00:00.000Z","publication_date":"2024-04-30T00:00:00.000Z","cpc_codes":["H04L","G05D","G05D","G05D","G05D","G06Q","G06Q","G06Q","G06Q","G06Q","G06Q","G06Q","G06Q","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","G06Q","G06Q","H04L","H04L"],"num_claims":9,"abstract":"A method for sequential authentication based on chain of authentication using public key infrastructure (PKI) is provided. The method includes generating, by a user, a first private key and a first public key corresponding to each other; generating, by an nth service provider, an nth private key and an nth public key corresponding to each other; transmitting, from the user to the nth service provider, a level n key; verifying, by the nth service provider, the level n key; generating, by the nth service provider, a level (n+1) key by concatenating the level n key and the nth public key signed with the nth private key; and transmitting, by the nth service provider, the level (n+1) key to the user, where n is a natural number, and when n=1, the level 1 key is the first public key signed with the first private key."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Chain of authentication using public key infrastructure","description":"A method for sequential authentication based on chain of authentication using public key infrastructure (PKI) is provided. The method includes generating, by a user, a first private key and a first pu","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-11973887","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-11973887","citation_suggestion":"Patentable. \"Chain of authentication using public key infrastructure\" (US-11973887). https://patentable.app/patents/US-11973887","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-11973887","json":"https://patentable.app/api/llm-context/US-11973887","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-05-31T14:09:23.822Z"}