Secure data transfer using random ordering and random block sizing
US9344278B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 2012 |
| Grant date | May 17, 2016 |
| Priority date | — |
| Expiry date | May 27, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Encrypted information is conventionally broken into blocks which are transmitted sequentially. Because the order and the size of such blocks can be easily determined, an eavesdropper can gain valuable information regarding the content of the communication. More specifically, if known types of information exist within a block, the encryption key may be determined allowing the content of other encrypted blocks to be obtained. Embodiments of a system, method and computer program product described herein can overcome this deficiency by securely transferring information through random ordering and random block sizing. An original data set to be transferred is divided into a plurality of blocks, where at least two blocks have different sizes. The blocks are encrypted and inserted into a sequence of data transfer slots. The blocks are then selected for transfer in random order by selecting a slot to transfer based on a generated random number.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.