Complex format-preserving encryption scheme
US9634838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2014 |
| Grant date | Apr 25, 2017 |
| Priority date | — |
| Expiry date | Feb 19, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0618
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods, computing systems and computer program products implement embodiments of the present invention that include defining multiple primitives, each primitive including ranking and unranking methods. Two or more of the multiple primitives are selected, and an operation is performed on the selected primitives, thereby defining a complex format. Upon and encryption processor receiving a data record comprising a plaintext, the complex format is applied to the plaintext, thereby generating a ciphertext, and the ciphertext is transmitted to a remote computer. Upon receiving the ciphertext, the remote computer can apply the complex format to the received ciphertext, thereby regenerating the plaintext.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.