feat: create_evm_vk python bindings (zkonduit#818)

src/python.rs

@@ -1491,7 +1491,7 @@ fn encode_evm_calldata<'a>(
 ///     The path to the SRS file
 ///
 /// render_vk_separately: bool
-///     Whether the verifier key should be rendered as a separate contract. We recommend disabling selector compression if this is enabled. To save the verifier key as a separate contract, set this to true and then call the create-evm-vk command
+///     Whether the verifier key should be rendered as a separate contract. We recommend disabling selector compression if this is enabled. To save the verifier key as a separate contract, set this to true and then call the create_evm_vk command
 ///
 /// Returns
 /// -------
@@ -1533,6 +1533,56 @@ fn create_evm_verifier(
     })
 }
 
+/// Creates an Evm verifer key. This command should be called after create_evm_verifier with the render_vk_separately arg set to true. By rendering a verification key separately you can reuse the same verifier for similar circuit setups with different verifying keys, helping to reduce the amount of state our verifiers store on the blockchain.
+///
+/// Arguments
+/// ---------
+/// vk_path: str
+///     The path to the verification key file
+///
+/// settings_path: str
+///     The path to the settings file
+///
+/// sol_code_path: str
+///     The path to the create the solidity verifying key.
+///
+/// abi_path: str
+///     The path to create the ABI for the solidity verifier
+///
+/// srs_path: str
+///     The path to the SRS file
+///
+/// Returns
+/// -------
+/// bool
+///
+#[pyfunction(signature = (
+    vk_path=PathBuf::from(DEFAULT_VK),
+    settings_path=PathBuf::from(DEFAULT_SETTINGS),
+    sol_code_path=PathBuf::from(DEFAULT_VK_SOL),
+    abi_path=PathBuf::from(DEFAULT_VERIFIER_ABI),
+    srs_path=None
+))]
+fn create_evm_vk(
+    py: Python,
+    vk_path: PathBuf,
+    settings_path: PathBuf,
+    sol_code_path: PathBuf,
+    abi_path: PathBuf,
+    srs_path: Option<PathBuf>,
+) -> PyResult<Bound<'_, PyAny>> {
+    pyo3_asyncio::tokio::future_into_py(py, async move {
+        crate::execute::create_evm_vk(vk_path, srs_path, settings_path, sol_code_path, abi_path)
+            .await
+            .map_err(|e| {
+                let err_str = format!("Failed to run create_evm_verifier: {}", e);
+                PyRuntimeError::new_err(err_str)
+            })?;
+
+        Ok(true)
+    })
+}
+
 /// Creates an EVM compatible data attestation verifier, you will need solc installed in your environment to run this
 ///
 /// Arguments
@@ -1762,7 +1812,7 @@ fn deploy_da_evm(
 /// Arguments
 /// ---------
 /// addr_verifier: str
-///     The path to verifier contract's address
+///     The verifier contract's address as a hex string
 ///
 /// proof_path: str
 ///     The path to the proof file (generated using the prove command)
@@ -1774,7 +1824,7 @@ fn deploy_da_evm(
 ///     does the verifier use data attestation ?
 ///
 /// addr_vk: str
-///
+///     The addess of the separate VK contract (if the verifier key is rendered as a separate contract)
 /// Returns
 /// -------
 /// bool
@@ -1925,6 +1975,7 @@ fn ezkl(_py: Python<'_>, m: &PyModule) -> PyResult<()> {
     m.add_function(wrap_pyfunction!(compile_circuit, m)?)?;
     m.add_function(wrap_pyfunction!(verify_aggr, m)?)?;
     m.add_function(wrap_pyfunction!(create_evm_verifier, m)?)?;
+    m.add_function(wrap_pyfunction!(create_evm_vk, m)?)?;
     m.add_function(wrap_pyfunction!(deploy_evm, m)?)?;
     m.add_function(wrap_pyfunction!(deploy_vk_evm, m)?)?;
     m.add_function(wrap_pyfunction!(deploy_da_evm, m)?)?;

tests/python/binding_tests.py

@@ -423,6 +423,74 @@ async def test_create_evm_verifier():
     assert res == True
     assert os.path.isfile(sol_code_path)
 
+async def test_create_evm_verifier_separate_vk():
+    """
+    Create EVM a verifier with solidity code and separate vk
+    In order to run this test you will need to install solc in your environment
+    """
+    vk_path = os.path.join(folder_path, 'test_evm.vk')
+    settings_path = os.path.join(folder_path, 'settings.json')
+    sol_code_path = os.path.join(folder_path, 'test_separate.sol')
+    vk_code_path = os.path.join(folder_path, 'test_vk.sol')
+    abi_path = os.path.join(folder_path, 'test_separate.abi')
+    abi_vk_path = os.path.join(folder_path, 'test_vk_separate.abi')
+    proof_path = os.path.join(folder_path, 'test_evm.pf')
+    calldata_path = os.path.join(folder_path, 'calldata.bytes')
+
+    # # res is now a vector of bytes
+    # res = ezkl.encode_evm_calldata(proof_path, calldata_path)
+
+    # assert os.path.isfile(calldata_path)
+    # assert len(res) > 0
+
+
+    res = await ezkl.create_evm_verifier(
+        vk_path,
+        settings_path,
+        sol_code_path,
+        abi_path,
+        srs_path=srs_path,
+        render_vk_seperately=True
+    )
+
+    res = await ezkl.create_evm_vk(
+        vk_path,
+        settings_path,
+        vk_code_path,
+        abi_vk_path,
+        srs_path=srs_path,
+    )
+
+    assert res == True
+    assert os.path.isfile(sol_code_path)
+
+
+async def test_deploy_evm_separate_vk():
+    """
+    Test deployment of the separate verifier smart contract + vk
+    In order to run this you will need to install solc in your environment
+    """
+    addr_path_verifier = os.path.join(folder_path, 'address_separate.json')
+    addr_path_vk = os.path.join(folder_path, 'address_vk.json')
+    sol_code_path = os.path.join(folder_path, 'test_separate.sol')
+    vk_code_path = os.path.join(folder_path, 'test_vk.sol')
+
+    # TODO: without optimization there will be out of gas errors
+    # sol_code_path = os.path.join(folder_path, 'test.sol')
+
+    res = await ezkl.deploy_evm(
+        addr_path_verifier,
+        sol_code_path,
+        rpc_url=anvil_url,
+    )
+
+    res = await ezkl.deploy_vk_evm(
+        addr_path_vk,
+        vk_code_path,
+        rpc_url=anvil_url,
+    )
+
+    assert res == True
 
 async def test_deploy_evm():
     """
@@ -503,6 +571,47 @@ async def test_verify_evm():
 
     assert res == True
 
+async def test_verify_evm_separate_vk():
+    """
+    Verifies an evm proof
+    In order to run this you will need to install solc in your environment
+    """
+    proof_path = os.path.join(folder_path, 'test_evm.pf')
+    addr_path_verifier = os.path.join(folder_path, 'address_separate.json')
+    addr_path_vk = os.path.join(folder_path, 'address_vk.json')
+    proof_path = os.path.join(folder_path, 'test_evm.pf')
+    calldata_path = os.path.join(folder_path, 'calldata_separate.bytes')
+
+    with open(addr_path_verifier, 'r') as file:
+        addr_verifier = file.read().rstrip()
+
+    print(addr_verifier)
+
+    with open(addr_path_vk, 'r') as file:
+        addr_vk = file.read().rstrip()
+
+    print(addr_vk)
+
+    # res is now a vector of bytes
+    res = ezkl.encode_evm_calldata(proof_path, calldata_path, addr_vk=addr_vk)
+
+    assert os.path.isfile(calldata_path)
+    assert len(res) > 0
+
+    # TODO: without optimization there will be out of gas errors
+    # sol_code_path = os.path.join(folder_path, 'test.sol')
+
+    res = await ezkl.verify_evm(
+        addr_verifier,
+        proof_path,
+        rpc_url=anvil_url,
+        addr_vk=addr_vk,
+        # sol_code_path
+        # optimizer_runs
+    )
+
+    assert res == True
+
 
 async def test_aggregate_and_verify_aggr():
     data_path = os.path.join(