Method and apparatus for facilitating secure distributed content delivery
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United States of America Patent
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Apr 22, 2008
Grant Date -
Feb 6, 2003
app pub date -
Aug 2, 2002
filing date -
Aug 4, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
One embodiment of the present invention provides a system that facilitates receiving content from a primary peer and forwarding it to a secondary peer, wherein blocks of the content are sent to the secondary peer prior to all of the blocks of the content being received from the primary peer. The system starts by receiving an encrypted list of checksums from a server, wherein each checksum in the list is associated with a corresponding block of the content. Next, the system decrypts the encrypted list of checksums to form a list of decrypted checksums. The system then receives a block of the content from the primary peer and calculates a checksum for the block of the content. The system subsequently compares the calculated checksum with a corresponding checksum from the list of decrypted checksums received from the server. If the calculated checksum matches the corresponding checksum, the system sends the block of the content to the secondary peer.
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