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+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "65fc09f10666a9f147042251e0dda9c18f166ff7de300607007e96bdebc1068d"
+
+[[package]]
+name = "web-time"
+version = "1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a6580f308b1fad9207618087a65c04e7a10bc77e02c8e84e9b00dd4b12fa0bb"
+dependencies = [
+ "js-sys",
+ "wasm-bindgen",
+]
+
+[[package]]
+name = "zerocopy"
+version = "0.7.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
+dependencies = [
+ "byteorder",
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.7.35"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.87",
+]
diff --git a/Cargo.toml b/Cargo.toml
new file mode 100644
index 0000000..b2ec056
--- /dev/null
+++ b/Cargo.toml
@@ -0,0 +1,19 @@
+[package]
+name = "plonky2-verifier"
+version = "0.1.0"
+edition = "2021"
+license = "GPL-3.0"
+description = "A pure Rust library to verify plonky2 proof."
+repository = "https://github.com/distributed-lab/plonky2-verifier"
+homepage = "https://github.com/distributed-lab/plonky2-verifier#readme"
+documentation = "https://distributed-lab.github.io/plonky2-verifier/"
+authors = ["Distributed Lab"]
+keywords = ["crypto", "no-std", "blockchain", "cryptography"]
+
+[dependencies]
+plonky2 = "0.2.2"
+snafu = "0.8.5"
+
+[dev-dependencies]
+ctor = "0.2.8"
+once_cell = "1.20.2"
\ No newline at end of file
diff --git a/LICENSE b/LICENSE
new file mode 100644
index 0000000..e72bfdd
--- /dev/null
+++ b/LICENSE
@@ -0,0 +1,674 @@
+ GNU GENERAL PUBLIC LICENSE
+ Version 3, 29 June 2007
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+SUCH DAMAGES.
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+
+ How to Apply These Terms to Your New Programs
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+possible use to the public, the best way to achieve this is to make it
+free software which everyone can redistribute and change under these terms.
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+ To do so, attach the following notices to the program. It is safest
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+state the exclusion of warranty; and each file should have at least
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+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation, either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see .
+
+Also add information on how to contact you by electronic and paper mail.
+
+ If the program does terminal interaction, make it output a short
+notice like this when it starts in an interactive mode:
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+ Copyright (C)
+ This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
+ This is free software, and you are welcome to redistribute it
+ under certain conditions; type `show c' for details.
+
+The hypothetical commands `show w' and `show c' should show the appropriate
+parts of the General Public License. Of course, your program's commands
+might be different; for a GUI interface, you would use an "about box".
+
+ You should also get your employer (if you work as a programmer) or school,
+if any, to sign a "copyright disclaimer" for the program, if necessary.
+For more information on this, and how to apply and follow the GNU GPL, see
+.
+
+ The GNU General Public License does not permit incorporating your program
+into proprietary programs. If your program is a subroutine library, you
+may consider it more useful to permit linking proprietary applications with
+the library. If this is what you want to do, use the GNU Lesser General
+Public License instead of this License. But first, please read
+.
\ No newline at end of file
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..d3c19de
--- /dev/null
+++ b/README.md
@@ -0,0 +1,11 @@
+# Plonky2 Verifier
+
+[![License: GPL v3](https://img.shields.io/badge/License-GPLv3-blue.svg)](https://www.gnu.org/licenses/gpl-3.0)
+
+> A verifier for [plonky2](https://github.com/0xPolygonZero/plonky2/) proofs.
+
+This rust crate provides functionality to deserialize and verify proof, public inputs and verification key.
+
+## License
+
+This code is released under the GPL 3.0 license.
\ No newline at end of file
diff --git a/rust-toolchain b/rust-toolchain
new file mode 100644
index 0000000..07ade69
--- /dev/null
+++ b/rust-toolchain
@@ -0,0 +1 @@
+nightly
\ No newline at end of file
diff --git a/src/deserializer.rs b/src/deserializer.rs
new file mode 100644
index 0000000..f373128
--- /dev/null
+++ b/src/deserializer.rs
@@ -0,0 +1,49 @@
+use plonky2::field::extension::Extendable;
+use plonky2::hash::hash_types::RichField;
+use plonky2::plonk::circuit_data::{CommonCircuitData, VerifierCircuitData};
+use plonky2::plonk::config::GenericConfig;
+use plonky2::plonk::proof::ProofWithPublicInputs;
+use plonky2::util::serialization::GateSerializer;
+
+use alloc::vec::Vec;
+use snafu::Snafu;
+
+/// Deserialization error.
+#[derive(Debug, Snafu)]
+pub enum DeserializeError {
+ /// Invalid proof or public inputs.
+ #[snafu(display("Invalid proof or public inputs for deserialization"))]
+ InvalidProof,
+ /// Invalid verification key.
+ #[snafu(display("Invalid verification key for deserialization"))]
+ InvalidVerificationKey,
+}
+
+pub(crate) fn deserialize_vk(
+ vk: &[u8],
+ gs: &dyn GateSerializer,
+) -> Result, DeserializeError>
+where
+ F: RichField + Extendable,
+ C: GenericConfig,
+{
+ VerifierCircuitData::::from_bytes(Vec::from(vk), gs)
+ .map_err(|_| DeserializeError::InvalidVerificationKey)
+}
+
+pub(crate) fn deserialize_proof_with_pubs(
+ proof: &[u8],
+ pubs: &[u8],
+ common_data: &CommonCircuitData,
+) -> Result, DeserializeError>
+where
+ F: RichField + Extendable,
+ C: GenericConfig,
+{
+ let mut bytes = Vec::with_capacity(proof.len() + pubs.len());
+ bytes.extend_from_slice(proof);
+ bytes.extend_from_slice(pubs);
+
+ ProofWithPublicInputs::::from_bytes(bytes, common_data)
+ .map_err(|_| DeserializeError::InvalidProof)
+}
diff --git a/src/lib.rs b/src/lib.rs
new file mode 100644
index 0000000..00b9140
--- /dev/null
+++ b/src/lib.rs
@@ -0,0 +1,61 @@
+#![no_std]
+#![doc = include_str!("../README.md")]
+#![deny(missing_docs)]
+
+extern crate alloc;
+
+mod deserializer;
+
+use deserializer::{deserialize_proof_with_pubs, deserialize_vk};
+
+use plonky2::field::extension::Extendable;
+use plonky2::hash::hash_types::RichField;
+use plonky2::plonk::config::GenericConfig;
+use plonky2::util::serialization::GateSerializer;
+use snafu::Snafu;
+
+pub use deserializer::DeserializeError;
+
+/// Verification error.
+#[derive(Debug, Snafu)]
+pub enum VerifyError {
+ /// Invalid data.
+ #[snafu(display("Invalid data for verification: [{}]", cause))]
+ InvalidData {
+ /// Internal error.
+ #[snafu(source)]
+ cause: DeserializeError,
+ },
+ /// Failure.
+ #[snafu(display("Failed to verify"))]
+ Failure,
+}
+
+impl From for VerifyError {
+ fn from(value: DeserializeError) -> Self {
+ VerifyError::InvalidData { cause: value }
+ }
+}
+
+/// Verify the given proof `proof` and public inputs `pubs` using verification key `vk`.
+/// Use the given verification key `vk` to verify the proof `proof` against the public inputs `pubs`.
+/// Can fail if:
+/// - the proof, the pubs or the vk are not deserializable respectively as a `plonky2::plonk::proof::Proof`,
+/// a `plonky2::hash::hash_types::RichField + plonky2_field::extension::Extendable`
+/// and `plonky2::plonk::circuit_data::VerifierCircuitData`.
+/// - the proof is not valid.
+pub fn verify(
+ vk: &[u8],
+ proof: &[u8],
+ pubs: &[u8],
+ gs: &dyn GateSerializer,
+) -> Result<(), VerifyError>
+where
+ F: RichField + Extendable,
+ C: GenericConfig,
+{
+ let vk = deserialize_vk::(vk, gs)?;
+ let proof = deserialize_proof_with_pubs::(proof, pubs, &vk.common)?;
+
+ vk.verify(proof).map_err(|_| VerifyError::Failure)
+}
diff --git a/tests/artifacts/proof.bin b/tests/artifacts/proof.bin
new file mode 100644
index 0000000..dd3f1d2
Binary files /dev/null and b/tests/artifacts/proof.bin differ
diff --git a/tests/artifacts/pubs.bin b/tests/artifacts/pubs.bin
new file mode 100644
index 0000000..31a33dd
Binary files /dev/null and b/tests/artifacts/pubs.bin differ
diff --git a/tests/artifacts/vk.bin b/tests/artifacts/vk.bin
new file mode 100644
index 0000000..a767c2f
Binary files /dev/null and b/tests/artifacts/vk.bin differ
diff --git a/tests/artifacts_generator.rs b/tests/artifacts_generator.rs
new file mode 100644
index 0000000..703541c
--- /dev/null
+++ b/tests/artifacts_generator.rs
@@ -0,0 +1,71 @@
+use std::fs;
+
+use plonky2::field::types::Field;
+use plonky2::iop::witness::{PartialWitness, WitnessWrite};
+use plonky2::plonk::circuit_builder::CircuitBuilder;
+use plonky2::plonk::circuit_data::CircuitConfig;
+use plonky2::plonk::config::{GenericConfig, PoseidonGoldilocksConfig};
+use plonky2::util::serialization::{DefaultGateSerializer, Write};
+
+/// An example of using Plonky2 to prove a statement of the form
+/// "I know the 100th element of the Fibonacci sequence, starting with constants a and b."
+/// When a == 0 and b == 1, this is proving knowledge of the 100th (standard) Fibonacci number.
+/// This example also serializes the proof, public inputs and vk to files.
+pub fn gen_factorial() {
+ const D: usize = 2;
+ type C = PoseidonGoldilocksConfig;
+ type F = >::F;
+
+ let config = CircuitConfig::standard_recursion_config();
+ let mut builder = CircuitBuilder::::new(config);
+
+ // The arithmetic circuit.
+ let initial_a = builder.add_virtual_target();
+ let initial_b = builder.add_virtual_target();
+ let mut prev_target = initial_a;
+ let mut cur_target = initial_b;
+ for _ in 0..99 {
+ let temp = builder.add(prev_target, cur_target);
+ prev_target = cur_target;
+ cur_target = temp;
+ }
+
+ // Public inputs are the two initial values (provided below) and the result (which is valid).
+ builder.register_public_input(initial_a);
+ builder.register_public_input(initial_b);
+ builder.register_public_input(cur_target);
+
+ // Provide initial values.
+ let mut pw = PartialWitness::new();
+ pw.set_target(initial_a, F::ZERO);
+ pw.set_target(initial_b, F::ONE);
+
+ let data = builder.build::();
+
+ let proof = data.prove(pw).unwrap();
+
+ let mut proof_bytes = Vec::new();
+ proof_bytes.write_proof(&proof.proof).unwrap();
+
+ let mut pubs_bytes = Vec::new();
+ pubs_bytes.write_usize(proof.public_inputs.len()).unwrap();
+ pubs_bytes
+ .write_field_vec(proof.public_inputs.as_slice())
+ .unwrap();
+
+ let vk_bytes = data
+ .verifier_data()
+ .to_bytes(&DefaultGateSerializer)
+ .unwrap();
+
+ fs::write("tests/artifacts/vk.bin", vk_bytes).unwrap();
+ fs::write("tests/artifacts/proof.bin", proof_bytes).unwrap();
+ fs::write("tests/artifacts/pubs.bin", pubs_bytes).unwrap();
+
+ println!(
+ "100th Fibonacci number mod |F| (starting with {}, {}) is: {}",
+ proof.public_inputs[0], proof.public_inputs[1], proof.public_inputs[2]
+ );
+
+ data.verify(proof).unwrap()
+}
diff --git a/tests/integration.rs b/tests/integration.rs
new file mode 100644
index 0000000..81d5c22
--- /dev/null
+++ b/tests/integration.rs
@@ -0,0 +1,64 @@
+#[path = "artifacts_generator.rs"]
+mod artifacts_generator;
+
+use plonky2::plonk::config::{GenericConfig, PoseidonGoldilocksConfig};
+use plonky2::util::serialization::DefaultGateSerializer;
+use plonky2_verifier::{verify, DeserializeError, VerifyError};
+
+fn load_data() -> (Vec, Vec, Vec) {
+ // Ensure artifacts exist by running `gen_factorial` only if needed
+ if !std::path::Path::new("tests/artifacts/proof.bin").exists() ||
+ !std::path::Path::new("tests/artifacts/pubs.bin").exists() ||
+ !std::path::Path::new("tests/artifacts/vk.bin").exists()
+ {
+ println!("Generating artifacts...");
+ artifacts_generator::gen_factorial();
+ }
+ let proof = std::fs::read("tests/artifacts/proof.bin").unwrap();
+ let pubs = std::fs::read("tests/artifacts/pubs.bin").unwrap();
+ let vk = std::fs::read("tests/artifacts/vk.bin").unwrap();
+
+ (vk, proof, pubs)
+}
+
+fn verify_non_generic(vk: &Vec, proof: &Vec, pubs: &Vec) -> Result<(), VerifyError> {
+ const D: usize = 2;
+ type C = PoseidonGoldilocksConfig;
+ type F = >::F;
+
+ verify::(vk.as_slice(), proof.as_slice(), pubs.as_slice(), &DefaultGateSerializer)
+}
+
+#[test]
+fn should_verify_valid_proof() {
+ let (vk, proof, pubs) = load_data();
+
+ assert!(verify_non_generic(&vk, &proof, &pubs).is_ok());
+}
+
+#[test]
+fn should_not_deserialize_invalid_pubs() {
+ let (vk, proof, mut pubs) = load_data();
+
+ pubs[0] = pubs.first().unwrap().wrapping_add(1);
+
+ assert!(matches!(
+ verify_non_generic(&vk, &proof, &pubs),
+ Err(VerifyError::InvalidData {
+ cause: DeserializeError::InvalidProof
+ })
+ ));
+}
+
+#[test]
+fn should_not_verify_false_proof() {
+ let (vk, proof, mut pubs) = load_data();
+
+ let len = pubs.len();
+ pubs[len - 1] = pubs.last().unwrap().wrapping_add(1);
+
+ assert!(matches!(
+ verify_non_generic(&vk, &proof, &pubs),
+ Err(VerifyError::Failure { .. })
+ ));
+}
\ No newline at end of file