51 lines
2.1 KiB
Markdown
51 lines
2.1 KiB
Markdown
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# Mixnet
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## Components
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- `node`: A mixnode implementation that will be assigned to one of the mixnet layers and will be responsible for receiving packets and forwarding them to the next mixnet layer.
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- `client`: A mixclient implementation
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- which splits a message into multiple Sphinx packets, constructs mix routes for them, and sends the packets to the first mixnode in each route.
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- which receives Sphinx packets from a mixnode and reconstructs a message.
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## Recommended Architecture
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```mermaid
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flowchart LR
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subgraph layer-1
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mixnode-1-1
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mixnode-1-2
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end
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subgraph layer-2
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mixnode-2-1
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mixnode-2-2
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end
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subgraph layer-3
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mixnode-3-1
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mixnode-3-2
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end
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mixnode-1-1 --> mixnode-2-1
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mixnode-1-1 --> mixnode-2-2
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mixnode-1-2 --> mixnode-2-1
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mixnode-1-2 --> mixnode-2-2
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mixnode-2-1 --> mixnode-3-1
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mixnode-2-1 --> mixnode-3-2
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mixnode-2-2 --> mixnode-3-1
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mixnode-2-2 --> mixnode-3-2
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mixclient-sender-1 --> mixnode-1-1
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mixclient-sender-1 --> mixnode-1-2
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mixnode-3-1 --> mixclient-senderreceiver-1
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mixnode-3-2 --> mixclient-senderreceiver-2
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```
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The mix `node` component can be integrated into a separate application, for example, so that it can be run independently with mixclients for better reliability or privacy.
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The mix `client` component is also designed to be integrated into any application that wants to send/receive packets to/from the mixnet.
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The `client` can be configured with one of modes described [below](#mixclient-modes).
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## Mixclient Modes
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- `Sender`: A mixclient only sends Sphinx packets to mixnodes, but doesn't receive any packets from mixnodes.
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- `SenderReceiver`: A mixclient not only sends Sphinx packets to mixnodes, but also receive packets from mixnodes.
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- Due to the design of mixnet, mixclients always receive packets from mixnodes in the last mixnet layer.
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- Currently, only 1:1 mapping is supported. In other words, multiple mixclients cannot listen from the same mixnode. It also means that it is recommended that a single node operator runs both a mixnode and a mixclient.
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