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.

Date of Patent:
May. 17, 2022

Filed:

Dec. 16, 2019
Applicant:

The Toronto-dominion Bank, Toronto, CA;

Inventors:

Alexey Shpurov, Toronto, CA;

Albert Louis Rothenstein, Toronto, CA;

Adrian Chung-Hey Ma, Richmond Hill, CA;

Buturab Rizvi, Vaughan, CA;

Alexandra Tsourkis, Toronto, CA;

Francis James Alexander Guttridge, Vaughan, CA;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 9/08 (2006.01); H04L 9/32 (2006.01); H04L 9/30 (2006.01); G06Q 30/02 (2012.01);
U.S. Cl.
CPC ...
H04L 9/0861 (2013.01); G06Q 30/0226 (2013.01); H04L 9/30 (2013.01); H04L 9/3226 (2013.01); H04L 9/3247 (2013.01); H04L 9/3265 (2013.01); H04L 2209/38 (2013.01);
Abstract

The disclosed exemplary embodiments include computer-implemented systems, devices, and processes that securely manage and regenerate cryptographic keys using permissioned distributed ledgers. For example, a device may receive, from a first computing system, data indicative of a recordation of a first public key onto a distributed ledger. Based on an occurrence of a regeneration condition, the device may transmit, to a second computing system, a second public key and a first digital signature, and the second computing system may validate the first digital signature, apply a second digital signature to the second public key, and transmit the second public key and the digital signatures to the first computing system. The device also receives, from the first computing system, additional data indicative of a recordation of the second public key onto the distributed ledger, and based on the additional data, the device may invalidate the first private key.


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