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:
Nov. 04, 2014
Filed:
Jul. 16, 2013
Applicant:
Brent Waters, Austin, TX (US);
Inventor:
Brent Waters, Austin, TX (US);
Assignee:
Zeutro LLC, Austin, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/00 (2006.01); H04L 9/32 (2006.01); G06F 21/60 (2013.01);
U.S. Cl.
CPC ...
G06F 21/602 (2013.01);
Abstract
A method for secure transmission of a message encrypted under an attribute based encryption scheme is provided. A first and a second authority parameter may be received from one or more authorities. A policy is generated based on the parameters. The generated policy comprises a flexible access control structure. A ciphertext is constructed based on the policy. To decrypt the ciphertext, key components are received from one or more authorities, the key components associated with a decryptor identifier. A decryption key is generated based on the policy and the key components. A plaintext is generated by decrypting the ciphertext.