Invention Grant
US09264222B2 Precomputing internal AES states in counter mode to protect keys used in AES computations
有权
在计数器模式下预先计算内部AES状态，以保护AES计算中使用的密钥
- Patent Title: Precomputing internal AES states in counter mode to protect keys used in AES computations
- Patent Title (中): 在计数器模式下预先计算内部AES状态，以保护AES计算中使用的密钥
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Application No.: US14015523Application Date: 2013-08-30
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Publication No.: US09264222B2Publication Date: 2016-02-16
- Inventor: Benoit Chevallier-Mames , Mathieu Ciet , Thomas Icart , Bruno Kindarji , Augustin J. Farrugia
- Applicant: Apple Inc.
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Blakely, Sokoloff, Taylor & Zafman LLP
- Main IPC: H04L9/30
- IPC: H04L9/30 ; H04L9/06
Abstract:
Methods, media, and systems for, in one embodiment, protecting one or more keys in an encryption and/or decryption process can use precomputed values in the process such that at least a portion of the one or more keys is not used or exposed in the process. In one example of a method, internal states of an AES encryption process are saved for use in a counter mode stream cipher operation in which the key used in the AES encryption process is not exposed or used.
Public/Granted literature
- US20140301546A1 PRECOMPUTING INTERNAL AES STATES IN COUNTER MODE TO PROTECT KEYS USED IN AES COMPUTATIONS Public/Granted day:2014-10-09
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