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PrecomputedTxData

zebra_chain::primitives::zcash_primitives

Struct PrecomputedTxData 

Source 
pub(crate) struct PrecomputedTxData {
    tx_data: TransactionData<PrecomputedAuth>,
    txid_parts: TxDigests<Hash>,
    all_previous_outputs: Arc<Vec<Output>>,
}
Expand description

Precomputed data used for sighash or txid computation.

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§tx_data: TransactionData<PrecomputedAuth>§txid_parts: TxDigests<Hash>§all_previous_outputs: Arc<Vec<Output>>

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impl PrecomputedTxData

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pub(crate) fn new( tx: &Transaction, nu: NetworkUpgrade, all_previous_outputs: Arc<Vec<Output>>, ) -> Result<PrecomputedTxData, Error>

Computes the data used for sighash or txid computation.

§Inputs
  • tx: the relevant transaction.
  • nu: the network upgrade to which the transaction belongs.
  • all_previous_outputs: the transparent Output matching each transparent input in tx.
§Errors
  • If tx can’t be converted to its librustzcash equivalent.
  • If nu doesn’t contain a consensus branch id convertible to its librustzcash equivalent.
§Consensus

[NU5 only, pre-NU6] All transactions MUST use the NU5 consensus branch ID 0xF919A198 as defined in ZIP-252.

[NU6 only] All transactions MUST use the NU6 consensus branch ID 0xC8E71055 as defined in ZIP-253.

§Notes

The check that ensures compliance with the two consensus rules stated above takes place in the Transaction::to_librustzcash method. If the check fails, the tx can’t be converted to its librustzcash equivalent, which leads to an error. The check relies on the passed nu parameter, which uniquely represents a consensus branch id and can, therefore, be used as an equivalent to a consensus branch id. The desired nu is set either by the script or tx verifier in zebra-consensus.

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pub fn orchard_bundle(&self) -> Option<Bundle<Authorized, ZatBalance>>

Returns the Orchard bundle in tx_data.

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pub fn sapling_bundle(&self) -> Option<Bundle<Authorized, ZatBalance>>

Returns the Sapling bundle in tx_data.

Trait Implementations§

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impl Debug for PrecomputedTxData

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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Size: 1936 bytes