Padding oracle elimination in RSA encryption
US11463242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 19, 2020 |
| Grant date | Oct 4, 2022 |
| Priority date | — |
| Expiry date | Nov 13, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/20
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method, a computer program product, and a system for removing padding oracles in encryption techniques. The method includes padding a plaintext message using a padding scheme producing a padded plaintext message. The method also includes encrypting the padded plaintext message using a block cipher generating an encrypted data block of fixed-size as well as a hash value. The method further includes randomly generating an ephemeral key and an initialization vector. The method also includes prepending the hash value, the ephemeral key, and the initialization vector to the encrypted data block. The method includes performing an encryption technique to the encrypted data block prepended with the hash value, the ephemeral key, and the initialization vector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.