发明名称 |
Method and integrated circuit for protecting against differential power analysis attacks |
摘要 |
In one embodiment of the invention, a method is provided for protecting against attacks on security of a programmable integrated circuit (IC). At least a portion of an encrypted bitstream input to the programmable IC is decrypted with a cryptographic key stored in the programmable IC. A number of failures to decrypt the encrypted bitstream is tracked. The tracked number is stored in a memory of the programmable IC that retains the number across on-off power cycles of the programmable IC. In response to the number of failures exceeding a threshold, data that prevents the decryption key from being used for a subsequent decryption of a bitstream is stored in the programmable IC.
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申请公布号 |
US8539254(B1) |
申请公布日期 |
2013.09.17 |
申请号 |
US20100791608 |
申请日期 |
2010.06.01 |
申请人 |
BRIDGFORD BRENDAN K.;MOORE JASON J.;TRIMBERGER STEPHEN M.;EDWARDS ERIC E.;XILINX, INC. |
发明人 |
BRIDGFORD BRENDAN K.;MOORE JASON J.;TRIMBERGER STEPHEN M.;EDWARDS ERIC E. |
分类号 |
H04L29/06 |
主分类号 |
H04L29/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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