US 12,242,621 B2
Protecting data from brute force attack
François-Eric Michel Guyomarc′h, l'Herault (FR); and Francois Menard, Clamart (FR)
Assigned to ASSA ABLOY AB, Stockholm (SE)
Filed by ASSA ABLOY AB, Stockholm (SE)
Filed on Dec. 7, 2023, as Appl. No. 18/531,889.
Application 18/531,889 is a continuation of application No. 17/064,922, filed on Oct. 7, 2020, granted, now 11,874,935.
Application 17/064,922 is a continuation of application No. 15/901,433, filed on Feb. 21, 2018, granted, now 10,824,737.
Claims priority of provisional application 62/461,956, filed on Feb. 22, 2017.
Prior Publication US 2024/0143796 A1, May 2, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. G06F 21/60 (2013.01); G06F 3/06 (2006.01); H04L 9/06 (2006.01); H04L 9/08 (2006.01); H04L 9/32 (2006.01); H04L 9/40 (2022.01)
CPC G06F 21/602 (2013.01) [G06F 3/0623 (2013.01); H04L 9/0625 (2013.01); H04L 9/0825 (2013.01); H04L 9/0894 (2013.01); H04L 9/3247 (2013.01); H04L 63/08 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for securely storing data, the method comprising:
scrambling the data to provide scrambled data;
generating a scramble schema indicating how to unscramble the scrambled data;
splitting each of the scrambled data and the scramble schema into a plurality of portions, wherein splitting the scramble schema comprises, for each of one or more blocks of the scramble schema, setting a first split portion equal to a random number and setting a second split portion equal to the difference between the block of the scramble schema and the random number; and
distributing both a portion of the scrambled data and a portion of the scramble schema to each of a plurality of entities.