try breaking it down
[Imported from Trac: page Security, version 3]
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Security.md
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Security.md
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## Access Control
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## Access Control
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The Tahoe distributed filesystem is composed of files and directories. Each file has a unique and unguessable identifier, called a "CHK-URI". Possession of this identifier is necessary and sufficient to download, reconstruct, decrypt, and verify the integrity of the file. If a person is not given the CHK-URI, then they cannot see the
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The Tahoe distributed filesystem is composed of files and directories.
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### Files
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#### read access
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Each file has a unique and unguessable identifier, called a "CHK-URI", which is derived from the file contents. Possession of this identifier is necessary and sufficient to download, reconstruct, decrypt, and verify the integrity of the file. If a person is not given the CHK-URI, then they cannot see the contents of the file.
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#### mutation
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Files in the Tahoe grid are immutable. If you upload a file to the grid, and then change part of it and upload it again, then there are now two files in the grid -- the old one and the new one -- and each has a distinct, unique, CHK-URI.
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## Traffic Analysis
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## Traffic Analysis
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