Invention Grant
US07400723B2 Secure method for secret key cryptographic calculation and component using said method
有权
秘密密钥加密计算的安全方法和使用所述方法的组件
- Patent Title: Secure method for secret key cryptographic calculation and component using said method
- Patent Title (中): 秘密密钥加密计算的安全方法和使用所述方法的组件
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Application No.: US10467572Application Date: 2002-02-06
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Publication No.: US07400723B2Publication Date: 2008-07-15
- Inventor: Fabrice Romain , Yannick Teglia
- Applicant: Fabrice Romain , Yannick Teglia
- Applicant Address: FR Montrouge
- Assignee: STMicroelectronics SA
- Current Assignee: STMicroelectronics SA
- Current Assignee Address: FR Montrouge
- Agency: Allen, Dyer, Doppelt, Milbrath & Gilchrist, P.A.
- Agent Lisa K. Jorgenson
- Priority: FR0101684 20010208
- International Application: PCT/FR02/00454 WO 20020206
- International Announcement: WO02/063822 WO 20020815
- Main IPC: H04K1/00
- IPC: H04K1/00
Abstract:
A secured method of cryptographic computation to generate output data from input data and from a secret key includes a derived key scheduling step to provide a derived key from the secret key according to a known key scheduling operation. The method also includes a masking step, performed before the derived key scheduling step, to mask the secret key so that the derived scheduled key is different at each implementation of the method. The present method and component can be used in transfer type applications, such as bank type applications.
Public/Granted literature
- US20040071291A1 Secure method for secret key cryptographic calculation and component using said method Public/Granted day:2004-04-15
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