execution-core: Re-expose zk types under zk-feature

contracts/host_fn/Cargo.toml

@@ -9,5 +9,4 @@ crate-type = ["cdylib", "rlib"]
 [dependencies]
 execution-core = { version = "0.1.0", path = "../../execution-core" }
 dusk-bytes = "0.1"
-dusk-plonk = { version = "0.16", default-features = false, features = ["rkyv-impl", "alloc"] }
 rusk-abi = { version = "0.13.0-rc", path = "../../rusk-abi" }

contracts/license/Cargo.toml

@@ -7,11 +7,10 @@ edition = "2021"
 crate-type = ["cdylib", "rlib"]
 
 [dependencies]
-execution-core = { version = "0.1.0", path = "../../execution-core" }
+execution-core = { version = "0.1.0", path = "../../execution-core", features = ["zk"] }
 dusk-bytes = "0.1"
 dusk-poseidon = "0.39"
 poseidon-merkle = { version = "0.6", features = ["rkyv-impl", "zk", "size_32"] }
-dusk-plonk = { version = "0.19", default-features = false, features = ["rkyv-impl", "alloc"] }
 rkyv = { version = "0.7", default-features = false, features = ["size_32"] }
 bytecheck = { version = "0.6", default-features = false }
 

contracts/license/src/license_types.rs

@@ -9,9 +9,8 @@ use alloc::vec::Vec;
 use bytecheck::CheckBytes;
 use rkyv::{Archive, Deserialize, Serialize};
 
-use execution_core::BlsScalar;
+use execution_core::{plonk::Proof, BlsScalar};
 
-use dusk_plonk::prelude::Proof;
 use poseidon_merkle::Item;
 
 #[allow(dead_code)]

contracts/license/tests/license.rs

@@ -9,7 +9,6 @@ extern crate alloc;
 use std::ops::Range;
 use std::sync::mpsc;
 
-use dusk_plonk::prelude::*;
 use dusk_poseidon::{Domain, Hash};
 use ff::Field;
 use poseidon_merkle::Opening;
@@ -21,8 +20,9 @@ use zk_citadel::license::{
 };
 
 use execution_core::{
+    plonk::{Compiler, PublicParameters},
     transfer::phoenix::{PublicKey, SecretKey, StealthAddress, ViewKey},
-    BlsScalar, ContractId, JubJubAffine, GENERATOR_EXTENDED,
+    BlsScalar, ContractId, JubJubAffine, JubJubScalar, GENERATOR_EXTENDED,
 };
 use rusk_abi::{ContractData, Session};
 use rusk_profile::get_common_reference_string;

contracts/stake/Cargo.toml

@@ -9,7 +9,6 @@ crate-type = ["cdylib", "rlib"]
 [dependencies]
 execution-core = { version = "0.1.0", path = "../../execution-core" }
 dusk-bytes = "0.1"
-dusk-plonk = { version = "0.19", default-features = false, features = ["rkyv-impl", "alloc"] }
 rkyv = { version = "0.7", default-features = false, features = ["size_32"] }
 
 [target.'cfg(target_family = "wasm")'.dependencies]
@@ -18,7 +17,7 @@ rusk-abi = { version = "0.13.0-rc", path = "../../rusk-abi" }
 [dev-dependencies]
 rusk-profile = { version = "0.6", path = "../../rusk-profile" }
 rusk-abi = { version = "0.13.0-rc", path = "../../rusk-abi", default-features = false, features = ["host"] }
-phoenix-circuits = "0.2.1-rc"
+execution-core = { version = "0.1.0", path = "../../execution-core", features = ["zk"] }
 rkyv = { version = "0.7", default-features = false, features = ["size_32"] }
 hex = "0.4"
 rand = "0.8"

contracts/stake/tests/common/utils.rs

@@ -7,26 +7,25 @@
 use std::sync::mpsc;
 
 use dusk_bytes::Serializable;
-use dusk_plonk::prelude::*;
 use ff::Field;
-use phoenix_circuits::transaction::{TxCircuit, TxInputNote, TxOutputNote};
 use poseidon_merkle::Opening as PoseidonOpening;
 use rand::rngs::StdRng;
 use rand::SeedableRng;
 
 use execution_core::{
+    plonk::{Prover, Verifier},
     signatures::schnorr::SecretKey as SchnorrSecretKey,
     transfer::{
         contract_exec::{ContractCall, ContractExec},
         phoenix::{
             value_commitment, Fee, Note, Payload as PhoenixPayload,
             PublicKey as PhoenixPublicKey, SecretKey as PhoenixSecretKey,
-            Sender, TreeLeaf, TxSkeleton, ViewKey as PhoenixViewKey,
-            NOTES_TREE_DEPTH,
+            Sender, TreeLeaf, TxCircuit, TxInputNote, TxOutputNote, TxSkeleton,
+            ViewKey as PhoenixViewKey, NOTES_TREE_DEPTH,
         },
         Transaction, TRANSFER_CONTRACT,
     },
-    ContractError, JubJubScalar,
+    BlsScalar, ContractError, JubJubAffine, JubJubScalar,
 };
 use rusk_abi::{CallReceipt, PiecrustError, Session};
 

contracts/transfer/Cargo.toml

@@ -10,7 +10,6 @@ crate-type = ["cdylib", "rlib"]
 execution-core = { version = "0.1.0", path = "../../execution-core" }
 dusk-bytes = "0.1"
 poseidon-merkle = { version = "0.6", features = ["rkyv-impl"] }
-dusk-plonk = { version = "0.19", default-features = false, features = ["rkyv-impl", "alloc"] }
 rkyv = { version = "0.7", default-features = false, features = ["size_32"] }
 ringbuffer = "0.15"
 
@@ -21,7 +20,7 @@ rusk-abi = { version = "0.13.0-rc", path = "../../rusk-abi" }
 [dev-dependencies]
 rusk-profile = { version = "0.6", path = "../../rusk-profile" }
 rusk-abi = { version = "0.13.0-rc", path = "../../rusk-abi", default-features = false, features = ["host"] }
-phoenix-circuits = "0.2.1-rc"
+execution-core = { version = "0.1.0", path = "../../execution-core", features = ["zk"] }
 rkyv = { version = "0.7", default-features = false, features = ["size_32"] }
 bytecheck = { version = "0.6", default-features = false }
 hex = "0.4"

contracts/transfer/tests/common.rs

@@ -7,6 +7,7 @@
 use std::sync::mpsc;
 
 use execution_core::{
+    plonk::{Prover, Verifier},
     signatures::{
         bls::{PublicKey as AccountPublicKey, SecretKey as AccountSecretKey},
         schnorr::SecretKey as SchnorrSecretKey,
@@ -20,18 +21,17 @@ use execution_core::{
         phoenix::{
             value_commitment, Fee, Note, Payload as PhoenixPayload, PublicKey,
             SecretKey, Sender, Transaction as PhoenixTransaction, TreeLeaf,
-            TxSkeleton, ViewKey, NOTES_TREE_DEPTH,
+            TxCircuit, TxInputNote, TxOutputNote, TxSkeleton, ViewKey,
+            NOTES_TREE_DEPTH,
         },
         Transaction, TRANSFER_CONTRACT,
     },
-    BlsScalar, ContractError, ContractId, JubJubScalar,
+    BlsScalar, ContractError, ContractId, JubJubAffine, JubJubScalar,
 };
 use rusk_abi::{CallReceipt, PiecrustError, Session};
 
 use dusk_bytes::Serializable;
-use dusk_plonk::prelude::*;
 use ff::Field;
-use phoenix_circuits::transaction::{TxCircuit, TxInputNote, TxOutputNote};
 use poseidon_merkle::Opening as PoseidonOpening;
 use rand::rngs::StdRng;
 use rand::SeedableRng;

execution-core/CHANGELOG.md

@@ -37,7 +37,8 @@ signatures::{
         PublicKey,
         SecretKey,
         Signature,
-        APK as AggPublicKey,
+        MutlisigPublicKey,
+        MultisigSignature
     };
     schnorr::{
         PublicKey,
@@ -104,6 +105,31 @@ stake::{
 };
 licence::LICENSE_CONTRACT;
 ```
+- under the `"zk"` feature:
+```rust
+plonk::{
+    pub use dusk_plonk::{
+        Circuit,
+        Compiler,
+        Composer,
+        Constraint,
+        Error,
+        Proof,
+        Prover,
+        PublicParameters,
+        Verifier,
+        Witness,
+        WitnessPoint,
+    }
+};
+transfer::phoenix::{
+    pub use phoenix_circuits{
+        TxCircuit,
+        TxInputNote,
+        TxOutputNote,
+    };
+};
+```
 
 [Unreleased]: https://github.com/dusk-network/rusk/compare/execution-core-0.1.0...HEAD
 [0.1.0]: https://github.com/dusk-network/dusk-abi/releases/tag/execution-core-0.1.0

execution-core/Cargo.toml

@@ -17,9 +17,19 @@ bytecheck = { version = "0.6", default-features = false }
 rand = { version = "0.8", default-features = false }
 ff = { version = "0.13", default-features = false }
 
+# zk-dependencies
+dusk-plonk = { version = "0.19", default-features = false, features = ["rkyv-impl", "alloc"], optional = true }
+phoenix-circuits = { version = "0.2.1-rc", optional = true }
+
 [dev-dependencies]
 rand = "0.8"
 
 [features]
 # It enables parallel thread aggregation of BlsPublicKey
 parallel = ["bls12_381-bls/parallel"]
+
+# It enables zk-capabilities
+zk = ["dusk-plonk", "phoenix-circuits"]
+
+# Enables std feature for dusk-plonk
+std = ["dusk-plonk/std"]

execution-core/src/lib.rs

@@ -31,15 +31,15 @@ pub use dusk_jubjub::{
 
 /// Signatures used in the Dusk protocol.
 pub mod signatures {
-    /// Types for the bls-signature scheme.
+    /// Types for the bls-signature scheme operating on the `bls12_381` curve.
     pub mod bls {
         pub use bls12_381_bls::{
             Error, MultisigPublicKey, MultisigSignature, PublicKey, SecretKey,
             Signature,
         };
     }
 
-    /// Types for the schnorr-signature scheme.
+    /// Types for the schnorr-signature scheme operating on the `jubjub` curve.
     pub mod schnorr {
         pub use jubjub_schnorr::{
             PublicKey, SecretKey, Signature, SignatureDouble,
@@ -52,6 +52,16 @@ pub use piecrust_uplink::{
     CONTRACT_ID_BYTES,
 };
 
+/// Types and traits to create plonk circuits and generate and verify plonk
+/// proofs.
+#[cfg(feature = "zk")]
+pub mod plonk {
+    pub use dusk_plonk::prelude::{
+        Circuit, Compiler, Composer, Constraint, Error, Proof, Prover,
+        PublicParameters, Verifier, Witness, WitnessPoint,
+    };
+}
+
 #[inline]
 const fn reserved(b: u8) -> ContractId {
     let mut bytes = [0u8; CONTRACT_ID_BYTES];

execution-core/src/transfer/phoenix.rs

@@ -29,6 +29,9 @@ pub use phoenix_core::{
     StealthAddress, TxSkeleton, ViewKey, NOTE_VAL_ENC_SIZE, OUTPUT_NOTES,
 };
 
+#[cfg(feature = "zk")]
+pub use phoenix_circuits::transaction::{TxCircuit, TxInputNote, TxOutputNote};
+
 /// Label used for the ZK transcript initialization. Must be the same for prover
 /// and verifier.
 pub const TRANSCRIPT_LABEL: &[u8] = b"dusk-network";
@@ -46,7 +49,7 @@ pub struct Fee {
     pub gas_price: u64,
     /// Address to send the remainder note
     pub stealth_address: StealthAddress,
-    /// Sender to use for the remainder
+    /// Sender to use for the remainder note
     pub sender: Sender,
 }
 

rusk-abi/Cargo.toml

@@ -10,17 +10,15 @@ exclude = [".github/workflows/ci.yml", ".gitignore"]
 
 [dependencies]
 blake2b_simd = { version = "1", default-features = false }
-cfg-if = "1"
 
 dusk-poseidon = "0.39"
 dusk-bytes = "0.1"
 bytecheck = { version = "0.6", default-features = false }
-dusk-plonk = { version = "0.19", default-features = false, features = ["rkyv-impl", "alloc"] }
 
 piecrust-uplink = { version = "0.16" }
 piecrust = { version = "0.23", optional = true }
 
-execution-core = { version = "0.1.0", path = "../execution-core" }
+execution-core = { version = "0.1.0", path = "../execution-core", features = ["zk"] }
 
 # These are patches since these crates don't seem to like semver.
 rkyv = { version = "=0.7.39", default-features = false, features = ["size_32"] }

rusk-abi/src/host.rs

@@ -8,9 +8,9 @@ use alloc::vec::Vec;
 use std::path::{Path, PathBuf};
 
 use dusk_bytes::DeserializableSlice;
-use dusk_plonk::prelude::{Proof, Verifier};
 use dusk_poseidon::{Domain, Hash as PoseidonHash};
 use execution_core::{
+    plonk::{Proof, Verifier},
     signatures::{
         bls::{PublicKey as BlsPublicKey, Signature as BlsSignature},
         schnorr::{

rusk-abi/tests/lib.rs

@@ -12,8 +12,11 @@ use std::sync::OnceLock;
 use rand_core::OsRng;
 
 use dusk_bytes::{ParseHexStr, Serializable};
-use dusk_plonk::prelude::*;
 use execution_core::{
+    plonk::{
+        Circuit, Compiler, Composer, Constraint, Error as PlonkError,
+        PublicParameters,
+    },
     signatures::{
         bls::{PublicKey as BlsPublicKey, SecretKey as BlsSecretKey},
         schnorr::{
@@ -231,7 +234,7 @@ impl TestCircuit {
 }
 
 impl Circuit for TestCircuit {
-    fn circuit(&self, composer: &mut Composer) -> Result<(), Error> {
+    fn circuit(&self, composer: &mut Composer) -> Result<(), PlonkError> {
         // append 3 gates that always evaluate to true
 
         let a = composer.append_witness(self.a);

rusk-prover/Cargo.toml

@@ -6,20 +6,18 @@ autobins = false
 
 [dependencies]
 dusk-bytes = { version = "0.1" }
-dusk-plonk = { version = "0.19", default-features = false }
 poseidon-merkle = { version = "0.6", features = ["rkyv-impl"] }
 rand_core = "0.6"
 
 rkyv = { version = "0.7", default-features = false, features = ["size_32"] }
 bytecheck = { version = "0.6", default-features = false }
 
-execution-core = { version = "0.1.0", path = "../execution-core" }
+execution-core = { version = "0.1.0", path = "../execution-core", features = ["zk"] }
 
 ## feature local_prover
 once_cell = { version = "1.9", optional = true }
 rand = { version = "0.8", optional = true }
 rusk-profile = { version = "0.6", path = "../rusk-profile", optional = true }
-phoenix-circuits = { version = "0.2.1-rc", optional = true }
 
 [dev-dependencies]
 hex = "0.4"
@@ -30,11 +28,11 @@ rand = "0.8"
 default = ["local_prover"]
 local_prover = [
     "once_cell",
-    "dusk-plonk/std",
     "rand",
     "rusk-profile",
-    "phoenix-circuits",
     "std",
 ]
 no_random = []
-std = []
+std = [
+    "execution-core/std"
+]

rusk-prover/src/prover.rs

@@ -9,7 +9,7 @@ mod execute;
 use crate::{ProverError, ProverResult};
 
 use dusk_bytes::Serializable;
-use dusk_plonk::prelude::Prover as PlonkProver;
+use execution_core::plonk::Prover as PlonkProver;
 use once_cell::sync::Lazy;
 
 #[cfg(not(feature = "no_random"))]
@@ -18,8 +18,6 @@ use rand::rngs::OsRng;
 #[cfg(feature = "no_random")]
 use rand::{rngs::StdRng, SeedableRng};
 
-use dusk_plonk::prelude::*;
-
 #[derive(Debug, Default)]
 pub struct LocalProver;
 
@@ -38,7 +36,7 @@ pub fn fetch_prover(circuit_name: &str) -> PlonkProver {
         panic!("there should be a prover key stored for {}", circuit_name)
     });
 
-    Prover::try_from_bytes(pk).expect("Prover key is expected to by valid")
+    PlonkProver::try_from_bytes(pk).expect("Prover key is expected to by valid")
 }
 
 #[cfg(test)]

rusk-prover/src/prover/execute.rs

@@ -6,10 +6,13 @@
 
 use super::*;
 
-use execution_core::transfer::phoenix::{
-    value_commitment, Sender, NOTES_TREE_DEPTH,
+use execution_core::{
+    transfer::phoenix::{
+        value_commitment, Sender, TxCircuit, TxInputNote, TxOutputNote,
+        NOTES_TREE_DEPTH,
+    },
+    JubJubAffine,
 };
-use phoenix_circuits::transaction::{TxCircuit, TxInputNote, TxOutputNote};
 use rand::{CryptoRng, RngCore};
 
 use crate::prover::fetch_prover;