The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 18, 2025
Filed:
Feb. 28, 2022
Arrowhead Center, Inc., Las Cruces, NM (US);
Gaurav Panwar, Las Cruces, NM (US);
Roopa Vishwanathan, Las Cruces, NM (US);
Satyajayant Misra, Las Cruces, NM (US);
Arrowhead Center, Inc., Las Cruces, NM (US);
Abstract
Method and apparatus for efficient and authorized rewriting of records already written to a blockchain. Mutable transactions will make a fraction of all blockchain transactions, but will be a necessity to meet the needs of privacy regulations, for example the General Data Protection Regulation. Embodiments of the present invention provide an efficient framework for transaction-level blockchain rewrites that is fine-grained and supports revocation. Embodiments of the present invention provide a novel revocable chameleon hash with ephemeral trapdoor method and/or system, a novel revocable fast attribute-based encryption method and/or system, and a dynamic group signature method and/or system.