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:
Apr. 09, 2024
Filed:
Apr. 30, 2020
Cryptography Research, Inc., San Jose, CA (US);
Michael Alexander Hamburg, San Francisco, CA (US);
Denis Alexandrovich Pochuev, Lafayette, CA (US);
CRYPTOGRAPHY RESEARCH, INC., San Jose, CA (US);
Abstract
Aspects of the present disclosure involve a method and a system to support execution of the method to obtain a first N cryptographic key, receive a key diversification information comprising a first plurality of bits, obtain an expanded key diversification information (EKDI) comprising a second plurality of bits, wherein a number of bits in the second plurality of bits is greater than a number of bits in the first plurality of bits, and wherein a value of each bit of the second plurality of bits is deterministically obtained in view of values of the first plurality of bits, and apply, by the processing device, a key derivation function to the first cryptographic key and the EKDI to obtain a second cryptographic key.