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Add Rust bindings to Go VDF

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Agost Biro 2024-06-05 22:45:50 +02:00
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Cargo.lock generated
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3
Cargo.toml
View File

@ -18,7 +18,8 @@ members = [
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rpath = false
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# panic = 'abort'

8
crates/vdf/Cargo.toml
View File

@ -22,11 +22,19 @@ license = "Apache-2.0"
edition = "2018"
description = "An implementation of Verifiable Delay Functions (VDFs) in Rust"
[lib]
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name = "vdf"
[dependencies]
classgroup = { path = "../classgroup", version = "^0.1.0" }
num-traits = "0.2"
sha2 = "0.8"
bit-vec = "0.5"
uniffi = { version= "0.25", features = ["cli"]}
[build-dependencies]
uniffi = { version = "0.25", features = [ "build" ] }
[dev-dependencies]
criterion = ">=0.2"

2
crates/vdf/build.rs
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@ -110,6 +110,8 @@ fn main() {
println!("cargo:rustc-link-search=/opt/homebrew/Cellar/gmp/6.3.0/lib");
}
uniffi::generate_scaffolding("src/lib.udl").expect("uniffi generation failed");
let manifest_path = env::var("OUT_DIR").expect("cargo should have set this");
let mut path = PathBuf::from(&manifest_path);
path.push("constants.rs");

16
crates/vdf/src/lib.rs
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@ -95,6 +95,8 @@ mod proof_of_time;
mod proof_pietrzak;
mod proof_wesolowski;
uniffi::include_scaffolding!("lib");
/// An empty struct indicating verification failure.
///
/// For security reasons, the functions that perform verification *do not*
@ -243,3 +245,17 @@ pub trait VDF: Send + Debug {
alleged_solution: &[u8],
) -> Result<(), InvalidProof>;
}
/// Solve and prove with the Wesolowski VDF using the given parameters.
/// Outputs the concatenated solution and proof (in this order).
pub fn wesolowski_solve(int_size_bits: u16, challenge: &[u8], difficulty: u64) -> Vec<u8> {
let vdf = WesolowskiVDFParams(int_size_bits).new();
vdf.solve(challenge, difficulty).expect("invalid difficulty")
}
/// Verify with the Wesolowski VDF using the given parameters.
/// `alleged_solution` is the output of `wesolowski_solve`.
pub fn wesolowski_verify(int_size_bits: u16, challenge: &[u8], difficulty: u64, alleged_solution: &[u8]) -> bool {
let vdf = WesolowskiVDFParams(int_size_bits).new();
vdf.verify(challenge, difficulty, alleged_solution).is_ok()
}

4
crates/vdf/src/lib.udl Normal file
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@ -0,0 +1,4 @@
namespace vdf {
sequence<u8> wesolowski_solve(u16 int_size_bits, [ByRef] sequence<u8> challenge, u64 difficulty);
boolean wesolowski_verify(u16 int_size_bits, [ByRef] sequence<u8> challenge, u64 difficulty, [ByRef] sequence<u8> alleged_solution);
};

1
vdf/.gitignore vendored Normal file
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@ -0,0 +1 @@
generated

15
vdf/generate.sh Executable file
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@ -0,0 +1,15 @@
#!/bin/bash
set -euxo pipefail
SCRIPT_DIR="${SCRIPT_DIR:-$( cd "../$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )}"
ROOT_DIR="$SCRIPT_DIR"
RUST_VDF_PACKAGE="$ROOT_DIR/crates/vdf"
BINDINGS_DIR="$ROOT_DIR/vdf"
# Build the Rust VDF package in release mode
RUSTFLAGS='-L /opt/homebrew/Cellar/gmp/6.3.0/lib' cargo build -p vdf --release
# Generate Go bindings
pushd "$RUST_VDF_PACKAGE" > /dev/null
uniffi-bindgen-go src/lib.udl -o "$BINDINGS_DIR"/generated

3
vdf/go.mod Normal file
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@ -0,0 +1,3 @@
module "source.quilibrium.com/quilibrium/cermonyclient/vdf"
go 1.20

18
vdf/test.sh Executable file
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@ -0,0 +1,18 @@
#!/bin/bash
set -euxo pipefail
SCRIPT_DIR="${SCRIPT_DIR:-$( cd "../$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )}"
ROOT_DIR="$SCRIPT_DIR"
BINDINGS_DIR="$ROOT_DIR/vdf"
BINARIES_DIR="$ROOT_DIR/target/release"
go generate
# Test the generated bindings
pushd "$BINDINGS_DIR" > /dev/null
LD_LIBRARY_PATH="${LD_LIBRARY_PATH:-}:$BINARIES_DIR" \
CGO_LDFLAGS="-lvdf -L$BINARIES_DIR -ldl" \
CGO_ENABLED=1 \
LC_RPATH="$BINARIES_DIR" \
go test

19
vdf/vdf.go Normal file
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@ -0,0 +1,19 @@
package vdf
import (
generated "source.quilibrium.com/quilibrium/cermonyclient/vdf/generated/vdf"
)
//go:generate ./generate.sh
// WesolowskiSolve Solve and prove with the Wesolowski VDF using the given parameters.
// Outputs the concatenated solution and proof (in this order).
func WesolowskiSolve(intSizeBits uint16, challenge []uint8, difficulty uint64) []uint8 {
return generated.WesolowskiSolve(intSizeBits, challenge, difficulty)
}
// WesolowskiVerify Verify with the Wesolowski VDF using the given parameters.
// `allegedSolution` is the output of `WesolowskiSolve`.
func WesolowskiVerify(intSizeBits uint16, challenge []uint8, difficulty uint64, allegedSolution []uint8) bool {
return generated.WesolowskiVerify(intSizeBits, challenge, difficulty, allegedSolution)
}

17
vdf/vdf_test.go Normal file
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@ -0,0 +1,17 @@
package vdf_test
import (
"source.quilibrium.com/quilibrium/cermonyclient/vdf"
"testing"
)
const intSizeBits = uint16(2048)
const difficulty = uint64(10000)
func TestProveVerify(t *testing.T) {
solution := vdf.WesolowskiSolve(intSizeBits, []byte{0x01, 0x02, 0x03}, difficulty)
isOk := vdf.WesolowskiVerify(intSizeBits, []byte{0x01, 0x02, 0x03}, difficulty, solution)
if !isOk {
t.Errorf("WesolowskiVerify failed")
}
}