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pczt: Define the structure and semantics of the PCZT format #1577

Merged
merged 18 commits into from
Dec 9, 2024
Merged

pczt: Define the structure and semantics of the PCZT format #1577

merged 18 commits into from
Dec 9, 2024

Commits on Dec 7, 2024

  1. pczt: Create structure that can be converted into a v5 transaction

    @str4d
    str4d committed Dec 7, 2024
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  2. pczt: Add fields necessary for signing shielded spends

    @str4d
    str4d committed Dec 7, 2024
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  3. pczt: Add fields necessary for creating proofs

    @str4d
    str4d committed Dec 7, 2024
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  4. pczt: Add fields necessary for decrypting ciphertexts

    @str4d
    str4d committed Dec 7, 2024
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  5. pczt: Add fields necessary for signing transparent spends 

    These follow the equivalent fields in BIP 174 and BIP 370.
    @str4d
    str4d committed Dec 7, 2024
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  6. pczt: Add fields for pointing to derived signing keys

    @str4d
    str4d committed Dec 7, 2024
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  7. pczt: Add fields for storing arbitrary proprietary data

    @str4d
    str4d committed Dec 7, 2024
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  8. pczt: Add the IO Finalizer role

    @str4d
    str4d committed Dec 7, 2024
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  9. zcash_primitives: Implement transparent PCZT support

    @str4d
    str4d committed Dec 7, 2024
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  10. pczt: Migrate to the protocol-specific PCZT impls

    @str4d
    str4d committed Dec 7, 2024
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  11. Connect pczt crate to zcash_primitives tx builder

    @str4d
    str4d committed Dec 7, 2024
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  12. pczt: Add the Spend Finalizer role

    @str4d
    str4d committed Dec 7, 2024
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  13. pczt: Add end-to-end integration tests

    @str4d
    str4d committed Dec 7, 2024
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  14. pczt: Encode as header-prefixed Postcard

    @str4d
    str4d committed Dec 7, 2024
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  15. pczt: Add the Updater role

    @str4d
    str4d committed Dec 7, 2024
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  16. pczt: Add getters for some of the unparsed PCZT fields 

    These enable accessing all of the proprietary fields, as well as a few
other fields necessary for `zcash_client_backend`.
    @nuttycom @str4d
    nuttycom authored and str4d committed Dec 7, 2024
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Commits on Dec 9, 2024

  1. pczt: Overhaul tx_modifiable flags 

    - The Inputs Modifiable Flag and Outputs Modifiable Flag are now only
  for transparent inputs and outputs.
- Bit 7 is now the Shielded Modifiable Flag (a single flag bit is fine
  because all shielded effects are always committed to at once).
- Fixed a bug in `Creator::build_from_parts` where the Has
  `SIGHASH_SINGLE` Flag was not being set correctly.
- The Signer role now updates `tx_modifiable` in case the IO Finalizer
  role has not yet run (which might be possible in some scenarios).
    @str4d
    str4d committed Dec 9, 2024
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  2. pczt: Verify tx version before using v5_signature_hash

    @str4d
    str4d committed Dec 9, 2024
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