Invention Grant
- Patent Title: System and method for a derivation function for key per page
- Patent Title (中): 用于每页键的推导函数的系统和方法
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Application No.: US12255581Application Date: 2008-10-21
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Publication No.: US08121294B2Publication Date: 2012-02-21
- Inventor: Mathieu Ciet , Augustin J. Farrugia , Filip Toma Paun
- Applicant: Mathieu Ciet , Augustin J. Farrugia , Filip Toma Paun
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Novak Druce + Quigg LLP
- Main IPC: H04L9/00
- IPC: H04L9/00 ; H04L29/06

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.
Public/Granted literature
- US20100098255A1 SYSTEM AND METHOD FOR A DERIVATION FUNCTION FOR KEY PER PAGE Public/Granted day:2010-04-22
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