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revision 1.143 by hemppah, Thu Mar 13 14:06:35 2003 UTC revision 1.144 by hemppah, Thu Mar 13 14:20:53 2003 UTC
# Line 1782  unique identifier. In Fenfire, data frag Line 1782  unique identifier. In Fenfire, data frag
1782  As we discussed already in chapter 4, Fenfire's Storm design  As we discussed already in chapter 4, Fenfire's Storm design
1783  uses SHA-1 \cite{fips-sha-1} hash over the contents of a scroll block for creating globally unique  uses SHA-1 \cite{fips-sha-1} hash over the contents of a scroll block for creating globally unique
1784  identifiers for each scroll block.  In our scenario, fragments of data is distributed  identifiers for each scroll block.  In our scenario, fragments of data is distributed
1785  throughout the Peer-to-Peer overlay. Our task is to locate and fetch  throughout the Peer-to-Peer overlay. We want that user operations in Fenfire are location transparent.
1786  (i.e. obtain) \emph{all} Storm scroll blocks, associated to a specific ''virtual  Therefore, our task is to locate and fetch (i.e. obtain) \emph{all} Storm scroll blocks, associated to a specific ''virtual
1787  file'', from Peer-to-Peer overlay as efficiently as possible. In addition to  file'', from Peer-to-Peer overlay as efficiently as possible. In addition to
1788  \emph{direct} scroll block obtaining using globally unique identifier of Storm scroll block,  \emph{direct} scroll block obtaining using globally unique identifier of Storm scroll block,
1789  we also must support \emph{indirect} obtaining of Storm scroll block using pointer blocks.  we also must support \emph{indirect} obtaining of Storm scroll block using pointer blocks.

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