Trait zcash_primitives::sapling::prover::TxProver

pub trait TxProver {
    type SaplingProvingContext;
    fn new_sapling_proving_context(&self) -> Self::SaplingProvingContext;
    fn spend_proof(
        &self, 
        ctx: &mut Self::SaplingProvingContext, 
        proof_generation_key: ProofGenerationKey, 
        diversifier: Diversifier, 
        rseed: Rseed, 
        ar: Fr, 
        value: u64, 
        anchor: Scalar, 
        merkle_path: MerklePath<Node>
    ) -> Result<([u8; 192], ExtendedPoint, PublicKey), ()>;
    fn output_proof(
        &self, 
        ctx: &mut Self::SaplingProvingContext, 
        esk: Fr, 
        payment_address: PaymentAddress, 
        rcm: Fr, 
        value: u64
    ) -> ([u8; 192], ExtendedPoint);
    fn binding_sig(
        &self, 
        ctx: &mut Self::SaplingProvingContext, 
        value_balance: Amount, 
        sighash: &[u8; 32]
    ) -> Result<Signature, ()>;
}

Interface for creating zero-knowledge proofs for shielded transactions.

Associated Types

type SaplingProvingContext

Type for persisting any necessary context across multiple Sapling proofs.

Required methods

fn new_sapling_proving_context(&self) -> Self::SaplingProvingContext

Instantiate a new Sapling proving context.

fn spend_proof(
    &self,
    ctx: &mut Self::SaplingProvingContext,
    proof_generation_key: ProofGenerationKey,
    diversifier: Diversifier,
    rseed: Rseed,
    ar: Fr,
    value: u64,
    anchor: Scalar,
    merkle_path: MerklePath<Node>
) -> Result<([u8; 192], ExtendedPoint, PublicKey), ()>

Create the value commitment, re-randomized key, and proof for a Sapling SpendDescription, while accumulating its value commitment randomness inside the context for later use.

fn output_proof(
    &self,
    ctx: &mut Self::SaplingProvingContext,
    esk: Fr,
    payment_address: PaymentAddress,
    rcm: Fr,
    value: u64
) -> ([u8; 192], ExtendedPoint)

Create the value commitment and proof for a Sapling OutputDescription, while accumulating its value commitment randomness inside the context for later use.

fn binding_sig(
    &self,
    ctx: &mut Self::SaplingProvingContext,
    value_balance: Amount,
    sighash: &[u8; 32]
) -> Result<Signature, ()>

Create the bindingSig for a Sapling transaction. All calls to TxProver::spend_proof and TxProver::output_proof must be completed before calling this function.

Implementors

impl TxProver for MockTxProver