发明授权
US06957340B1 Encryption key for multi-key encryption in programmable logic device
有权
可编程逻辑器件中多键加密的加密密钥
- 专利标题： Encryption key for multi-key encryption in programmable logic device
- 专利标题（中）： 可编程逻辑器件中多键加密的加密密钥
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申请号： US09724873申请日： 2000-11-28
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公开(公告)号： US06957340B1公开(公告)日： 2005-10-18
- 发明人: Raymond C. Pang , Stephen M. Trimberger , Jennifer Wong
- 申请人： Raymond C. Pang , Stephen M. Trimberger , Jennifer Wong
- 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 Edel M. Young; LeRoy D. Maunu
- 主分类号： G06F21/00
- IPC分类号： G06F21/00 ; H04L9/00 ; H04L9/14
摘要：
It is sometimes desirable to protect a design used in a PLD from being copied. If the design is stored in a different device from the PLD and read into the PLD through a bitstream, an unencrypted bitstream could be observed and copied as it is being loaded. According to the invention, a bitstream for configuring a PLD with an encrypted design includes unencrypted words for controlling loading of the configuration bitstream and encrypted words that actually specify the design.
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