{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9647845","patent":{"patent_number":"US-9647845","title":"Key downloading method, management method, downloading management method, device and system","assignee":null,"inventors":[],"filing_date":"2014-01-24T00:00:00.000Z","publication_date":"2017-05-09T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L","H04L"],"num_claims":6,"abstract":"Disclosed is a key download and management method, comprising: a device end authenticating the validity of an RKS server by checking the digital signature of a public key of an operating certificate of the RKS server; the RKS server generating an authentication token (AT); after being encrypted with a device identity authentication public key of the device end, returning a ciphertext to the device end; after being decrypted by the device end with a device identity authentication private key thereof, encrypting the ciphertext with the public key of the operating certificate and then returning same to a key server; after being decrypted with a private key of the operating certificate, the key server contrasting whether the decrypted authentication token (AT) is the same as the generated authentication token (AT); and if so, indicating that the POS terminal of a device is valid, thereby realizing bidirectional identity authentication."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Key downloading method, management method, downloading management method, device and system","description":"Disclosed is a key download and management method, comprising: a device end authenticating the validity of an RKS server by checking the digital signature of a public key of an operating certificate o","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9647845","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-9647845","citation_suggestion":"Patentable. \"Key downloading method, management method, downloading management method, device and system\" (US-9647845). https://patentable.app/patents/US-9647845","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9647845","json":"https://patentable.app/api/llm-context/US-9647845","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:59:33.158Z"}