Encryption method and apparatus using composition of ciphers
US8681975B2 · kind B2 · utility
5Cited by
1References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 31, 2009 |
| Grant date | Mar 25, 2014 |
| Priority date | — |
| Expiry date | Aug 23, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/603
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method and associated apparatus for use in a data distribution process to allow an untrusted intermediary to re-encrypt data for transmission from an originator to a message receiver without revealing the data (message) or the cipher to the intermediary. This method uses a composition of two ciphers for re-encrypting the message at the intermediary, without revealing the plain text message or either cipher to the intermediary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.