{"schema_version":"1.0","canonical_url":"https://patentable.app/patents/US-9621525","patent":{"patent_number":"US-9621525","title":"Semi-deterministic digital signature generation","assignee":null,"inventors":[],"filing_date":"2014-06-02T00:00:00.000Z","publication_date":"2017-04-11T00:00:00.000Z","cpc_codes":["H04L","H04L","H04L","H04L"],"num_claims":32,"abstract":"Various features pertain to digital signatures for use in signing messages. In one aspect, a digital signature is generated based on a nonce derived using a per-message salt value, particularly a salt selected to provide a semi-deterministic nonce (i.e. a nonce that is neither fully deterministic nor completely random.) In one example, the nonce is generated by concatenating the salt value with a long-term private key and then applying the result to a key derivation function along with a hash of the message to be signed. The salt value may be, e.g., a counter, a context-specific message or may be randomly generated within a restricted range of values (relative to a full range of values associated with the particular digital signature generation protocol used to generate a digital signature from the nonce.)"},"analysis":{"summary":null,"layman_explanation":null,"technical_analysis":null,"business_analysis":null,"faqs":null,"topics":[],"tech_cluster":null},"seo":{"title":"Semi-deterministic digital signature generation","description":"Various features pertain to digital signatures for use in signing messages. In one aspect, a digital signature is generated based on a nonce derived using a per-message salt value, particularly a salt","keywords":[]},"attribution":{"source":"Patentable","source_url":"https://patentable.app","canonical_url":"https://patentable.app/patents/US-9621525","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-9621525","citation_suggestion":"Patentable. \"Semi-deterministic digital signature generation\" (US-9621525). https://patentable.app/patents/US-9621525","copyright_holder":"Nomic Interactive Technology LLC"},"links":{"html":"https://patentable.app/patents/US-9621525","json":"https://patentable.app/api/llm-context/US-9621525","site":"https://patentable.app","llms_txt":"https://patentable.app/llms.txt"},"generated_at":"2026-06-06T06:41:37.475Z"}