Comments (4)
For creating specs: https://katzenpost.mixnetworks.org/docs/specs/sphinx.html#single-use-reply-block-surb-creation
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Am I right that it is not possible to send any anonymous reply back to the initiator without this feature implemented?
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hey @derlaft!
At this point you can add a breadcrumb to the package that each of the relayers will use to keep state locally to relay the response back to the destination. So, it is possible to possible to send an anonymous reply back to the initiator, but the relayers will have to keep state of the package channel, which the sphinx protocol tries to avoid. With SURBs we can bypass the state completely and avoid potential linking problems with the breadcrumbs.
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@gpestana not sure how encryption should work in this case.
But probably, since libp2p already handles streams and stuff, it may be possible to use this library for only dh negotiation (meh, it also requires a handshake), and then use some symmetric encryption. This way no state is required to support a separate connection (which won't be able to change hops unfortunately).
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Related Issues (20)
- [discussion] Mitigate DoS attacks on Sphinx relays
- Add support to more ECDSA implementations
- [p3lib-sphinx v0.1] release!
- Requests and ideas: What next? HOT 2
- Packet payload HMAC
- Refactor to allow developers to use other ciphers than ChaCha20
- Default nonce security
- Header verification before processing HOT 1
- Group element encoding
- Coherently transform bytes to multiaddr HOT 1
- [criop2p] think about adding "Content Resolver with Interest Obfuscation in P2P networks (CRIOP2P)"
- [octopusdht] create specs for anonymous and secure DHT lookup HOT 1
- DHT anonymous lookup - requesting full routing table
- [octopusdht] should the implementation include active attacks detection?
- [research] What are the privacy needs of current P2P projects? HOT 3
- go mod: unexpected module path "p3lib" HOT 1
- Distributed Reputaiton and DDoS
- [meta issue]create mix header HOT 1
- Add automated testing and github badge HOT 1
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