Protection against differential power analysis attacks involving initialization vectors
US11582021B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 2019 |
| Grant date | Feb 14, 2023 |
| Priority date | — |
| Expiry date | Jul 7, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0637
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed approaches for validating initialization vectors determining by a configuration control circuit whether or not an input initialization vector is within a range of valid initialization vectors. In response to determining that the initialization vector is within the range of valid initialization vectors, the configuration control circuit decrypts the ciphertext into plaintext using the input initialization vector and configures a memory circuit with the plaintext. In response to determining that the first initialization vector is outside the range of valid initialization vectors, the configuration control circuit signals that the first initialization vector is invalid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.