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104 lines
4.6 KiB
Markdown
104 lines
4.6 KiB
Markdown
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# go-libp2p-noise
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[](https://ethberlinzwei.com)
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[](https://libp2p.io/)
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[](http://webchat.freenode.net/?channels=%23libp2p)
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[](https://discuss.libp2p.io)
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[](https://godoc.org/github.com/libp2p/go-libp2p-noise)
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[](https://travis-ci.com/libp2p/go-libp2p-noise)
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> go-libp2p's noise encrypted transport
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`go-libp2p-noise` is a component of the [libp2p project](https://libp2p.io), a
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modular networking stack for developing peer-to-peer applications. It provides a
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secure transport channel for [`go-libp2p`][go-libp2p] based on the
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[Noise Protocol Framework](https://noiseprotocol.org). Following an initial
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plaintext handshake, all data exchanged between peers using `go-libp2p-noise` is
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encrypted and protected from eavesdropping.
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libp2p supports multiple [transport protocols][docs-transport], many of which
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lack native channel security. `go-libp2p-noise` is designed to work with
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go-libp2p's ["transport upgrader"][transport-upgrader], which applies security
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modules (like `go-libp2p-noise`) to an insecure channel. `go-libp2p-noise`
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implements the [`SecureTransport` interface][godoc-securetransport], which
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allows the upgrader to secure any underlying connection.
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More detail on the handshake protocol and wire format used is available in the
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[noise-libp2p specification][noise-libp2p-spec]. Details about security protocol
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negotiation in libp2p can be found in the [connection establishment spec][conn-spec].
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## Status
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This implementation is currently considered "feature complete," but it has not yet
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been widely tested in a production environment.
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## Install
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As `go-libp2p-noise` is still in development, it is not included as a default dependency of `go-libp2p`.
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`go-libp2p-noise` is a standard Go module which can be installed with:
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```sh
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go get github.com/libp2p/go-libp2p-noise
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```
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This repo is [gomod](https://github.com/golang/go/wiki/Modules) compatible, and users of
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go 1.12 and later with modules enabled will automatically pull the latest tagged release
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by referencing this package. Upgrades to future releases can be managed using `go get`,
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or by editing your `go.mod` file as [described by the gomod documentation](https://github.com/golang/go/wiki/Modules#how-to-upgrade-and-downgrade-dependencies).
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## Usage
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`go-libp2p-noise` is not currently enabled by default when constructing a new libp2p
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[Host][godoc-host], so you will need to explicitly enable it in order to use it.
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To do so, you can pass `noise.New` as an argument to a `libp2p.Security` `Option` when
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constructing a libp2p `Host` with `libp2p.New`:
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```go
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import (
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libp2p "github.com/libp2p/go-libp2p"
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noise "github.com/libp2p/go-libp2p-noise"
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)
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// wherever you create your libp2p instance:
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host := libp2p.New(
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libp2p.Security(noise.ID, noise.New)
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)
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```
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Note that the above snippet will _replace_ the default security protocols. To add Noise
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as an additional protocol, chain it to the default options instead:
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```go
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libp2p.ChainOptions(libp2p.DefaultSecurity, libp2p.Security(noise.ID, noise.New))
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```
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## Contribute
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Feel free to join in. All welcome. Open an [issue](https://github.com/libp2p/go-libp2p-noise/issues)!
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This repository falls under the libp2p [Code of Conduct](https://github.com/libp2p/community/blob/master/code-of-conduct.md).
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### Want to hack on libp2p?
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[](https://github.com/libp2p/community/blob/master/CONTRIBUTE.md)
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## License
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MIT
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---
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[go-libp2p]: https://github.com/libp2p/go-libp2p
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[noise-libp2p-spec]: https://github.com/libp2p/specs/blob/master/noise/README.md
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[conn-spec]: https://github.com/libp2p/specs/blob/master/connections/README.md
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[docs-transport]: https://docs.libp2p.io/concepts/transport
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[transport-upgrader]: https://github.com/libp2p/go-libp2p-transport-upgrader
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[godoc-host]: https://godoc.org/github.com/libp2p/go-libp2p-core/host#Host
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[godoc-option]: https://godoc.org/github.com/libp2p/go-libp2p#Option
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[godoc-go-libp2p-pkg-vars]: https://godoc.org/github.com/libp2p/go-libp2p#pkg-variables
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[godoc-security-option]: https://godoc.org/github.com/libp2p/go-libp2p#Security
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[godoc-securetransport]: https://godoc.org/github.com/libp2p/go-libp2p-core/sec#SecureTransport
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