Splicing resistant homomorphic passcode encryption
US9646306B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 13, 2014 |
| Grant date | May 9, 2017 |
| Priority date | — |
| Expiry date | Sep 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2463/062
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for encrypting a passcode is disclosed. In one embodiment, the method includes: receiving an indication of a portion of the passcode from a user; encoding the portion of the passcode; encrypting the encoded portion into ciphertext using a homomorphic encryption system; updating a cumulative encryption string by executing a cumulative operation to aggregate the ciphertext corresponding to the encoded portion into the cumulative encryption string computed for a previous portion of the passcode, wherein the cumulative operation is dictated by a homomorphic property of the homomorphic encryption system; and generating a passcode message based at least in part on the cumulative encryption string, wherein the passcode message includes a message authentication code.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.