System and method for a derivation function for key per page
US8121294B2 · kind B2 · utility
8Cited by
0References
27Claims
0Family size
Assignee
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Key dates
| Filing date | Oct 21, 2008 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Aug 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2209/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are systems, methods and computer-readable media to perform data encryption and decryption using a derivation function to obtain a key per page of data in a white-box environment. The method includes sharing a master key with the sender and receiver, splitting the input data into blocks and sub-blocks, and utilizing a set of keys and a master key to derive a page key. In another aspect of this disclosure, the key validation and shuffling operations are included. This method allows for the derivation of a key instead of storing a predetermined key, thus maintaining system security in a white-box environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.