Tahoe Secure, decentralized, fault-tolerant filesystem
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Tahoe Description

Secure, decentralized, fault-tolerant filesystem Tahoe is a secure, decentralized, fault-tolerant filesystem. All of the source code is available under a Free Software, Open Source licence.This filesystem is encrypted and spread over multiple peers in such a way that it remains available even when some of the peers are unavailable, malfunctioning, or malicious.With Tahoe, you can distribute your filesystem across a set of computers, such that if some of the computers fail or turn out to be malicious, the filesystem continues to work from the remaining computers. You can also share your files with other users, using a strongly encrypted, capability-based access control scheme.A "storage grid" is made up of a number of storage servers. A storage server has local attached storage (typically one or more hard disks). A "gateway" uses the storage servers and provides to its clients a filesystem over a standard protocol such as HTTP(S), FUSE, or SMB.Users do not rely on storage servers to provide confidentiality nor integrity for the data -- instead all of the data is encrypted and integrity-checked by the gateway, so that the servers can neither read nor alter the contents of the files.Users do rely on storage servers for availability. The ciphertext is erasure-coded and distributed across N storage servers (the default value for N is 10) so that it can be recovered from any K of these servers (the default value of K is 3). Therefore only the simultaneous failure of N-K+1 (with the defaults, 8) servers can make the data unavailable. Phrasing this in terms of reliance, we say that the users rely on the gateway for the confidentiality and integrity of the data, and on any 3 of the 10 servers for the availability of the data.In the typical deployment mode each user runs her own gateway on her own machine. This way she relies on only her own machine for the confidentiality and integrity of the data, and she can take advantage of filesystem integration using FUSE or SMB.An alternate deployment mode is that the gateway runs on a remote machine and the user connects to it over HTTPS. This means that the operator of the gateway can view and modify the user's data (the user relies on the gateway for confidentiality and integrity), but the user can access the filesystem with a client that doesn't have the gateway software installed, such as an Internet kiosk or cell phone.Tahoe is a cross-platform solution taht works on Mac OS X, Linux, Windows, Cygwin, and Solaris.NOTE: For installation instructions please see "docs/install.html" in the downloaded archive. What's New in This Release: · This is a major release adding repairer, backup command, large file support, (S)FTP server, and more.

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