Invention Grant
US08504848B2 Encrypted communication device with limited number of encryption key retrievals from memory
有权
加密通信设备，从内存中检索数量有限的加密密钥
- Patent Title: Encrypted communication device with limited number of encryption key retrievals from memory
- Patent Title (中): 加密通信设备，从内存中检索数量有限的加密密钥
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Application No.: US12885574Application Date: 2010-09-20
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Publication No.: US08504848B2Publication Date: 2013-08-06
- Inventor: Matthew Raymond Starr , Stephen Cameron Price-White
- Applicant: Matthew Raymond Starr , Stephen Cameron Price-White
- Applicant Address: IE Dublin
- Assignee: Zamtec Ltd
- Current Assignee: Zamtec Ltd
- Current Assignee Address: IE Dublin
- Agency: Cooley LLP
- Main IPC: G06F11/30
- IPC: G06F11/30
Abstract:
A device for encrypted communication with external entities is configured to frustrate side channel attacks attempting to determine an encryption key. The device has a first memory, an encryption key stored in the first memory and a one-way function for application to the encryption key. During use, the encryption key is retrieved from the first memory prior to application to the one-way function and the device is configured to limit the number of times the encryption key is allowed to be retrieved from the non-volatile memory to a pre-determined threshold.
Public/Granted literature
- US20110078456A1 Encrypted Communication Device with Limited Number of Encryption Key Retrievals from Memory Public/Granted day:2011-03-31
Information query
