Detection of unauthorized encryption using key length evaluation
US11496284B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 29, 2020 |
| Grant date | Nov 8, 2022 |
| Priority date | — |
| Expiry date | Oct 29, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0894
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques are provided for detection of unauthorized encryption in a storage system using key length evaluation. One method comprises determining a key length of an encryption key used to encrypt data associated with one or more write commands in a storage system; evaluating the key length relative to an expected key length; and performing one or more automated remedial actions, such as generating an alert notification, in response to the key length being different than the expected key length. A count of a number of write operations in a given folder can be compared to a number of files in the given folder and an alert notification can be generated in response to the count of the number of write operations in the given folder having a same value as the number of files in the given folder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.