{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9667413","patent":{"patent_number":"US-9667413","title":"Encryption realization method and system","assignee":null,"inventors":[],"filing_date":"2013-08-15T00:00:00.000Z","publication_date":"2017-05-30T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L","H04W","H04W","H04W","H04W","H04W","H04L","H04L","H04W"],"num_claims":20,"abstract":"An encryption realization method and system are disclosed. The method includes: a network-side device and a group call terminal maintaining the same list of push-to-talk (PTT) authentication key K values respectively; during each group call, the network-side device calculating an authentication vector (AV) according to a generated random number (RAND), an authentication sequence number (SQN), a PTT authentication key K value selected from the list of PTT authentication key K values and public network authentication functions; and according to the RAND and an authentication token (AUTN) in the AV acquired from the network-side device, the group call terminal performing authentication to generate an cipher key (CK). With the method and system according to the embodiments of the present invention, the encryption of the PTT system based on the security mechanism of the public network can be achieved, and drawbacks in the related that that the encryption of the PTT system depends on the private encryption algorithm which has a low intensity, the key is transmitted via an air interface, and the replacement of the key is not in time are solved, thereby largely improving the security of the PTT system."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Encryption realization method and system","description":"An encryption realization method and system are disclosed. The method includes: a network-side device and a group call terminal maintaining the same list of push-to-talk (PTT) authentication key K val","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9667413","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-9667413","citation_suggestion":"Patentable. \"Encryption realization method and system\" (US-9667413). https://patentable.app/patents/US-9667413","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9667413","json":"https://patentable.app/api/llm-context/US-9667413","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T07:43:57.975Z"}