SECURITY STORAGE OF ELECTRONIC KEYS WITHIIN VOLATILE MEMORIES
First Claim
1. A method for providing an electronic key within an integrated circuit including both a volatile memory and a non-volatile memory, the method comprisingstarting up the integrated circuit,reading the logical state of predetermined data storage cells assigned to the volatile memory, which data storage cells are characterized that with a plurality of start up procedures they respectively adopt the same logical state, andgenerating an electronic key by using the logical state of the predetermined data storage cells.
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Accused Products
Abstract
It is described a method for providing an electronic key within an integrated circuit (100) including both a volatile memory (102) and a non-volatile memory (104). The described comprises starting up the integrated circuit (100), reading the logical state of predetermined data storage cells (102a) assigned to the volatile memory (102), which data storage cells (102a) are characterized that with a plurality of start up procedures they respectively adopt the same logical state, and generating an electronic key by using the logical state of the predetermined data storage cells (102a). Preferably, the predetermined data storage cells (102a) are randomly distributed within the volatile memory (102). It is further described an integrated circuit (100) for providing an electronic key. The integrated circuit (100) comprises a volatile memory (102) comprising predetermined data storage cells (102a), which are characterized that with a plurality of start up procedures they respectively adopt the same logical state, and a non-volatile memory (104) having information stored upon regarding the predetermined data storage cells (102a). Thereby, the electronic key is defined by the corresponding logical states of the predetermined data storage cells (102a).
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Citations
11 Claims
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1. A method for providing an electronic key within an integrated circuit including both a volatile memory and a non-volatile memory, the method comprising
starting up the integrated circuit, reading the logical state of predetermined data storage cells assigned to the volatile memory, which data storage cells are characterized that with a plurality of start up procedures they respectively adopt the same logical state, and generating an electronic key by using the logical state of the predetermined data storage cells.
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7. An integrated circuit for providing an electronic key, the integrated circuit comprising
a volatile memory comprising predetermined data storage cells, which are characterized that with a plurality of start up procedures they respectively adopt the same logical state, and a non-volatile memory having information stored upon regarding the predetermined data storage cells, wherein the electronic key is defined by the logical state of the predetermined data storage cell.
Specification