Overridable data protection mechanism for PLDs
作者： Derek R. Curd , Neil G. Jacobson , Wei-Yi Ku , Kameswara K. Rao , Sholeh Diba
DOI:
关键词: Memory data register 、 Signal 、 Comparator 、 Data Protection Act 1998 、 Computer hardware 、 Software 、 Computer science 、 Code (cryptography) 、 Status register 、 Key (cryptography)
摘要: An overridable data protection mechanism for unlocking/locking a PLD includes protect override key register, an input and comparator. After the user inputs access code to software program sends enabling signal comparator which in turn compares bits stored register register. If two registers are identical, then outputs disable signal, thereby allowing modify configuration that PLD. incremented version control number new downloaded PLD, disabling comparator, preventing further modification on
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