Parse compact blocks to find wallet transactions

zcash_client_backend/src/wallet.rs

@@ -0,0 +1,32 @@
+//! Structs representing transaction data scanned from the block chain by a wallet or
+//! light client.
+
+use pairing::bls12_381::{Bls12, Fr};
+use zcash_primitives::{
+    jubjub::{edwards, PrimeOrder},
+    transaction::TxId,
+};
+
+pub struct EncCiphertextFrag(pub [u8; 52]);
+
+/// A subset of a [`Transaction`] relevant to wallets and light clients.
+///
+/// [`Transaction`]: zcash_primitives::transaction::Transaction
+pub struct WalletTx {
+    pub txid: TxId,
+    pub num_spends: usize,
+    pub num_outputs: usize,
+    pub shielded_outputs: Vec<WalletShieldedOutput>,
+}
+
+/// A subset of an [`OutputDescription`] relevant to wallets and light clients.
+///
+/// [`OutputDescription`]: zcash_primitives::transaction::components::OutputDescription
+pub struct WalletShieldedOutput {
+    pub index: usize,
+    pub cmu: Fr,
+    pub epk: edwards::Point<Bls12, PrimeOrder>,
+    pub enc_ct: EncCiphertextFrag,
+    pub account: usize,
+    pub value: u64,
+}