{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9634840","patent":{"patent_number":"US-9634840","title":"Digital signature technique","assignee":null,"inventors":[],"filing_date":"2014-07-22T00:00:00.000Z","publication_date":"2017-04-25T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L"],"num_claims":9,"abstract":"A method for signing a digital message, including the following steps: selecting parameters that include first and second primes, a ring of polynomials related to the primes, and at least one range-defining integer; deriving private and public keys respectively related to a random polynomial private key of the ring of polynomials, and to evaluations of roots of unity of the random polynomial to obtain a public key set of integers; storing the private key and publishing the public key; signing the digital message by: (A) generating a noise polynomial, (B) deriving a candidate signature by obtaining a hash of the digital message and the public key evaluated at the noise polynomial, and determining the candidate signature using the private key, a polynomial derived from the hash, and the noise polynomial, (C) determining whether the coefficients of the candidate signature are in a predetermined range dependent on the at least one range-defining integer, and (D) repeating steps (A) through (C) until the criterion of step (C) is satisfied, and outputting the resultant candidate signature as an encoded signed message."},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Digital signature technique","description":"A method for signing a digital message, including the following steps: selecting parameters that include first and second primes, a ring of polynomials related to the primes, and at least one range-de","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9634840","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-9634840","citation_suggestion":"Patentable. \"Digital signature technique\" (US-9634840). https://patentable.app/patents/US-9634840","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9634840","json":"https://patentable.app/api/llm-context/US-9634840","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T13:35:19.750Z"}