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:
Aug. 15, 2023
Filed:
May. 28, 2019
International Business Machines Corporation, Armonk, NY (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Privacy-preserving leakage-deterring public-key encryption techniques are provided. A sender system sends to an authority system a commitment to leakage-deterring-data, and proves in zero-knowledge that the sender system has access to an opening to the commitment. The sender system receives a signature corresponding to a signed commitment to the leakage-deterring-data and an identifier of the sender system. The sender system encrypts a message to a receiver system by applying a one-time pad to the message using a one-time-pad key, and encrypts the result of the application with the public key of the receiver system. The sender system encrypts the one-time-pad key with an attribute-based encryption scheme with a public key of an oblivious decryptor system. The sender system forms a ciphertext from a combination of the encrypted message and the encrypted one-time-pad key and sends the ciphertext to the receiver system.