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Prem Chaitanya Prathi 2025-03-12 11:24:05 +05:30
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standards/core/mix.md
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@ -54,7 +54,7 @@ Sender Node that would like to use `mix` protocol SHOULD discover enough mix nod
The pool size of mix nodes SHOULD be large enough for the mixing to be effective.
We RECOMMEND a pool size of at least 100 mix nodes for the mixing to be effective.
The serialized [Waku Message](https://rfc.vac.dev/waku/standards/core/14/message) SHOULD be the payload in the [sphinx packet](https://rfc.vac.dev/vac/raw/mix#4-sphinx-packet-format).
The serialized [Waku Message](https://rfc.vac.dev/waku/standards/core/14/message) MUST be the payload in the [sphinx packet](https://rfc.vac.dev/vac/raw/mix#4-sphinx-packet-format).
In order to provide anonymity of the sender node from the `service-node`, `Single Use reply blocks` or `anonymous replies` as specified in the original [sphinx](#references) paper SHALL be used.
@ -78,9 +78,9 @@ Resource-restricted/Edge nodes with short connection windows SHOULD always be ac
## ENR updates
Each waku node that supports `mix` SHOULD indicate the same in its discoverable [ENR](https://github.com/waku-org/specs/blob/master/standards/core/enr.md).
Each waku node that supports the `mix intermediary or exit role` SHOULD indicate the same in its discoverable [ENR](https://github.com/waku-org/specs/blob/master/standards/core/enr.md).
The following fields MUST be set as part of the discoverable ENR of a mix waku node:
- The `bit 5` in the [waku2 ENR key](https://github.com/waku-org/specs/blob/master/standards/core/enr.md#waku2-enr-key) is reserved to indicate `mix`support. This bit MUST be set to true to indicate `mix` support.
- The `bit 5` in the [waku2 ENR key](https://github.com/waku-org/specs/blob/master/standards/core/enr.md#waku2-enr-key) is reserved to indicate `mix` support. This bit MUST be set to true to indicate `mix` support.
- A new field `mix-key` SHOULD be set to the `ed25519 public key` which is used for sphinx encryption.
### Discovery
@ -102,7 +102,7 @@ Mix protocol in waku network SHOULD have `rate-limiting/spam` protection to hand
3. An attacker can spawn a huge number of mix nodes so that user behaviour is observed in order to determine traffic patterns and deanonymize users.
There is a need to enforce rate-limits and spam protect the mix network.
The rate-limiting and spam protection SHALL be addressed as part of future work.
The rate-limiting and spam protection shall be addressed as part of future work.
## Tradeoffs