发明授权
- 专利标题： Bitstream protection without key storage
- 专利标题（中）： 无密钥存储的位流保护
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申请号： US11151985申请日： 2005-06-14
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公开(公告)号： US07716497B1公开(公告)日： 2010-05-11
- 发明人: Stephen M. Trimberger
- 申请人： Stephen M. Trimberger
- 申请人地址： US CA San Jose
- 专利权人： XILINX, Inc.
- 当前专利权人： XILINX, Inc.
- 当前专利权人地址： US CA San Jose
- 代理商 William L. Paradice, III; John J. King
- 主分类号： G06F11/30
- IPC分类号： G06F11/30 ; G06F12/14
摘要：
An external storage device may transmit encrypted configuration data to a PLD during a configuration operation without transmitting the encryption key to the PLD and without retaining decryption information in the PLD. During a set-up operation, the encryption key is provided to the PLD, which generates an ID code upon power-up. The PLD generates a correction word in response to the encryption key and the ID code. The correction word is output from the PLD, which is powered-down, and is stored with the encrypted configuration data in the storage device. Then, during a configuration operation, the PLD is powered-on and re-generates the ID code. The correction word and the encrypted configuration data are transmitted to the PLD, which generates a decryption key in response to the re-generated ID code and the correction word.
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