Single-pass data compression and encryption
US8886926B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 2012 |
| Grant date | Nov 11, 2014 |
| Priority date | — |
| Expiry date | Feb 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/30
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Embodiments compress and encrypt data in a single pass to reduce inefficiencies that occur from compression and encrypting data separately. Typically, compression and encryption are implemented in separate functional units. This has a few disadvantages: 1) encryption cannot make use of compression state to further secure the message, 2) processed data is read and written twice, 3) additional space, time, and resources are consumed, and 4) it is more prone to potential cipher-attacks since the encryption stage is independent from compression. Embodiments overcome these disadvantages by structuring these operations so that both compression and encryption is executed within the same processing loop. Thus: 1) encryption is stronger due to the dependence on the compression state, 2) I/O buffers are accessed only once reducing overhead, 3) system footprint is reduced, and 4) cipher analysis is more complex since the decryption process cannot be separated from the decompression process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.