Daira-Emma Hopwood

Mark up consensus rules in protocol spec

1

The goals are: * give a name to each rule, which can be correlated with the corresponding code in zcashd and zebrad; * define an anchor URL for each rule...

[protocol spec] Include a cost analysis of attacks against BLS12-381 (STNFS, Cheon), Jubjub, and Pallas/Vesta

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For Cheon see https://ethresear.ch/t/cheons-attack-and-its-effect-on-the-security-of-big-trusted-setups/6692/16 , which estimates the cost as ~2125.2 scalar field operations (equivalent to ~2122 group operations). [Updated 2021-09-03 to take account of d being 221 for the...

[ZIP 155] addrv2 message

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This is necessary to support Tor v3 onion addresses. Tor v2 onion addresses are being deprecated according to [this timeline](https://blog.torproject.org/v2-deprecation-timeline). Copied from [the forum](https://forum.zcashcommunity.com/t/what-to-build/39594/12): > It looks as though BIP...

This is specified in ZIP 212 but the protocol spec does not reference the ZIP in that section, so the requirement would be easy to miss.

See https://github.com/ZcashFoundation/zebra/issues/2336.

[protocol spec] Consensus rules about canonical encodings are misstated in the spec

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In section 4.4 we have the *abstract* definition of a Spend description, and the following consensus rule: > Elements of a Spend description MUST be canonical encodings of the types...

> Next steps in the ZIP process: > - Start writing a draft. ---

Reserving this number to correspond to [BIP 350](https://github.com/bitcoin/bips/blob/master/bip-0350.mediawiki).