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21 results

torspec

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    • Name Last commit Last update
    attic
    proposals
    .gitignore
    .gitlab-ci.yml
    README.md
    address-spec.txt
    bandwidth-file-spec.txt
    bridgedb-spec.txt
    cert-spec.txt
    control-spec.txt
    dir-list-spec.txt
    dir-spec.txt
    gettor-spec.txt
    glossary.txt
    guard-spec.txt
    padding-spec.txt
    param-spec.txt
    path-spec.txt
    pt-spec.txt
    rend-spec-v2.txt
    rend-spec-v3.txt
    socks-extensions.txt
    srv-spec.txt
    tor-spec.txt
    version-spec.txt
    README.md

    Tor specifications

    This repository holds the specifications that describe how Tor works. They try to present Tor's protocols in sufficient detail to allow the reader to implement a compatible implementation of Tor without ever having to read the Tor source code.

    The proposals directory holds our design proposals. These include historical documents that have now been merged into . For more information on the proposal process, including an explanation of how to make new proposals, see, see 001-process.txt.

    What you can find here

    Tor's specification is pretty big, and we've broken it into a bunch of files.

    • General interest
      • tor-spec.txt contains the specification for the core Tor protocol itself; this is a good place to start reading.
      • cert-spec.txt describes a certificate format used in the other parts of the protocol.
      • dir-spec.txt specifies the operations and formats used to maintain a view of the network directory.
      • padding-spec.txt describes a set of padding mechanisms used to impede traffic analysis.
      • version-spec.txt explains how to parse Tor version numbers.
      • glossary.txt is a glossary of terms used in the other specifications.
    • Client operations
      • address-spec.txt lists a set of special addresses that Tor handles differently from the regular DNS system.
      • guard-spec.txt explains the "guard node" algorithm that Tor clients use to avoid sampling attacks.
      • path-spec.txt explains how clients choose their paths through the Tor network.
      • socks-extensions specifies Tor-specific extensions to the SOCKS protocol.
    • Onion services
    • Censorship resistance
      • bridgedb-spec.txt explains how the bridgedb server gives out bridges to censored clients.
      • gettor-spec.txt describes the gettor tool, which is used to download Tor in censored areas.
      • pt-spec.txt describes the protocol that Tor clients and relays use to communicate with pluggable transports used for traffic obfuscation.
    • Directory authorities
      • bandwidth-file-spec.txt specifies the file format used by bandwidth-measuring tools to report their observations to directory authorities.
      • srv-spec.txt specifies the protocol that directory authorities use to securely compute shared random values for the network.
    • Controller protocol
      • control-spec.txt explains the protocol used by controllers to communicate with a running Tor process.
    • Miscellaneous
      • dir-list-spec.txt explains the format used by tools like the fallback directory scripts to output a list of Tor directories for inclusion in the Tor source code.
      • The attic directory has obsolete or historical documents.