commit 7c86f96035c6b1bc4f6257754d2196750172dbd6 Author: Sean Bowe Date: Sun Apr 8 17:30:38 2018 -0600 Initial commit diff --git a/.gitignore b/.gitignore new file mode 100644 index 0000000..99a4aa6 --- /dev/null +++ b/.gitignore @@ -0,0 +1,6 @@ +phase1* +params +/target/ +**/*.rs.bk +params +new_params diff --git a/COPYRIGHT b/COPYRIGHT new file mode 100644 index 0000000..f886591 --- /dev/null +++ b/COPYRIGHT @@ -0,0 +1,14 @@ +Copyrights in the "sapling-mpc" library are retained by their contributors. No +copyright assignment is required to contribute to the "sapling-mpc" library. + +The "sapling-mpc" library is licensed under either of + + * Apache License, Version 2.0, (see ./LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0) + * MIT license (see ./LICENSE-MIT or http://opensource.org/licenses/MIT) + +at your option. + +Unless you explicitly state otherwise, any contribution intentionally +submitted for inclusion in the work by you, as defined in the Apache-2.0 +license, shall be dual licensed as above, without any additional terms or +conditions. diff --git a/Cargo.lock b/Cargo.lock new file mode 100644 index 0000000..2968662 --- /dev/null +++ b/Cargo.lock @@ -0,0 +1,237 @@ +[[package]] +name = "arrayvec" +version = "0.4.7" +source = "registry+https://github.com/rust-lang/crates.io-index" +dependencies = [ + "nodrop 0.1.12 (registry+https://github.com/rust-lang/crates.io-index)", +] + +[[package]] +name = "bellman" +version = "0.1.0" +source = 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IN NO EVENT +SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION +OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR +IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER +DEALINGS IN THE SOFTWARE. diff --git a/README.md b/README.md new file mode 100644 index 0000000..7bdcd28 --- /dev/null +++ b/README.md @@ -0,0 +1,19 @@ +# sapling-mpc + +This library is still under development. + +## License + +Licensed under either of + + * Apache License, Version 2.0, ([LICENSE-APACHE](LICENSE-APACHE) or http://www.apache.org/licenses/LICENSE-2.0) + * MIT license ([LICENSE-MIT](LICENSE-MIT) or http://opensource.org/licenses/MIT) + +at your option. + +### Contribution + +Unless you explicitly state otherwise, any contribution intentionally +submitted for inclusion in the work by you, as defined in the Apache-2.0 +license, shall be dual licensed as above, without any additional terms or +conditions. diff --git a/src/bin/compute.rs b/src/bin/compute.rs new file mode 100644 index 0000000..c91913d --- /dev/null +++ b/src/bin/compute.rs @@ -0,0 +1,58 @@ +extern crate phase2; +extern crate pairing; +extern crate rand; +extern crate blake2_rfc; + +use std::fs::File; +use std::io::{BufWriter, BufReader}; +use blake2_rfc::blake2b::Blake2b; + +fn main() { + let current_params = File::open("params").expect("couldn't open `./params`"); + let mut current_params = BufReader::with_capacity(1024*1024, current_params); + + let new_params = File::create("new_params").expect("couldn't create `./new_params`"); + let mut new_params = BufWriter::with_capacity(1024*1024, new_params); + + let mut sapling_spend = phase2::MPCParameters::read(&mut current_params, false) + .expect("couldn't deserialize Sapling Spend params"); + + let mut sapling_output = phase2::MPCParameters::read(&mut current_params, false) + .expect("couldn't deserialize Sapling Output params"); + + let mut sprout_joinsplit = phase2::MPCParameters::read(&mut current_params, false) + .expect("couldn't deserialize Sprout JoinSplit params"); + + let rng = &mut rand::OsRng::new().expect("couldn't create RNG"); + + let h1 = sapling_spend.contribute(rng); + let h2 = sapling_output.contribute(rng); + let h3 = sprout_joinsplit.contribute(rng); + + sapling_spend.write(&mut new_params).expect("couldn't write new Sapling Spend params"); + sapling_output.write(&mut new_params).expect("couldn't write new Sapling Spend params"); + sprout_joinsplit.write(&mut new_params).expect("couldn't write new Sapling Spend params"); + + let mut h = Blake2b::new(64); + h.update(&h1); + h.update(&h2); + h.update(&h3); + let h = h.finalize(); + + print!("Done!\n\n\ + Your contribution has been written to `./new_params`\n\n\ + The contribution you made is bound to the following hash:\n"); + + for line in h.as_ref().chunks(16) { + print!("\t"); + for section in line.chunks(4) { + for b in section { + print!("{:02x}", b); + } + print!(" "); + } + println!(""); + } + + println!("\n"); +} diff --git a/src/bin/new.rs b/src/bin/new.rs new file mode 100644 index 0000000..2bd6ce0 --- /dev/null +++ b/src/bin/new.rs @@ -0,0 +1,65 @@ +extern crate phase2; +extern crate sapling_crypto; +extern crate pairing; + +use std::fs::File; +use std::io::BufWriter; + +fn main() { + let jubjub_params = sapling_crypto::jubjub::JubjubBls12::new(); + + let params = File::create("params").unwrap(); + let mut params = BufWriter::with_capacity(1024 * 1024, params); + + // Sapling spend circuit + phase2::MPCParameters::new(sapling_crypto::circuit::sapling::Spend { + params: &jubjub_params, + value_commitment: None, + proof_generation_key: None, + payment_address: None, + commitment_randomness: None, + ar: None, + auth_path: vec![None; 32], // Tree depth is 32 for sapling + anchor: None + }).unwrap().write(&mut params).unwrap(); + + // Sapling output circuit + phase2::MPCParameters::new(sapling_crypto::circuit::sapling::Output { + params: &jubjub_params, + value_commitment: None, + payment_address: None, + commitment_randomness: None, + esk: None + }).unwrap().write(&mut params).unwrap(); + + // Sprout joinsplit circuit + phase2::MPCParameters::new(sapling_crypto::circuit::sprout::JoinSplit { + vpub_old: None, + vpub_new: None, + h_sig: None, + phi: None, + inputs: vec![sapling_crypto::circuit::sprout::JSInput { + value: None, + a_sk: None, + rho: None, + r: None, + auth_path: [None; 29] // Depth is 29 for Sprout + }, sapling_crypto::circuit::sprout::JSInput { + value: None, + a_sk: None, + rho: None, + r: None, + auth_path: [None; 29] // Depth is 29 for Sprout + }], + outputs: vec![sapling_crypto::circuit::sprout::JSOutput { + value: None, + a_pk: None, + r: None + }, sapling_crypto::circuit::sprout::JSOutput { + value: None, + a_pk: None, + r: None + }], + rt: None, + }).unwrap().write(&mut params).unwrap(); +} diff --git a/src/bin/verify.rs b/src/bin/verify.rs new file mode 100644 index 0000000..c0f0e43 --- /dev/null +++ b/src/bin/verify.rs @@ -0,0 +1,96 @@ +extern crate phase2; +extern crate sapling_crypto; +extern crate pairing; +extern crate blake2_rfc; + +use std::fs::File; +use std::io::BufReader; +use blake2_rfc::blake2b::Blake2b; + +fn main() { + let jubjub_params = sapling_crypto::jubjub::JubjubBls12::new(); + + let params = File::open("params").unwrap(); + let mut params = BufReader::with_capacity(1024 * 1024, params); + + let sapling_spend = phase2::MPCParameters::read(&mut params, false) + .expect("couldn't deserialize Sapling Spend params"); + + let sapling_output = phase2::MPCParameters::read(&mut params, false) + .expect("couldn't deserialize Sapling Output params"); + + let sprout_joinsplit = phase2::MPCParameters::read(&mut params, false) + .expect("couldn't deserialize Sprout JoinSplit params"); + + let sapling_spend_contributions = sapling_spend.verify(sapling_crypto::circuit::sapling::Spend { + params: &jubjub_params, + value_commitment: None, + proof_generation_key: None, + payment_address: None, + commitment_randomness: None, + ar: None, + auth_path: vec![None; 32], // Tree depth is 32 for sapling + anchor: None + }).expect("parameters are invalid"); + + let sapling_output_contributions = sapling_output.verify(sapling_crypto::circuit::sapling::Output { + params: &jubjub_params, + value_commitment: None, + payment_address: None, + commitment_randomness: None, + esk: None + }).expect("parameters are invalid"); + + let sprout_joinsplit_contributions = sprout_joinsplit.verify(sapling_crypto::circuit::sprout::JoinSplit { + vpub_old: None, + vpub_new: None, + h_sig: None, + phi: None, + inputs: vec![sapling_crypto::circuit::sprout::JSInput { + value: None, + a_sk: None, + rho: None, + r: None, + auth_path: [None; 29] // Depth is 29 for Sprout + }, sapling_crypto::circuit::sprout::JSInput { + value: None, + a_sk: None, + rho: None, + r: None, + auth_path: [None; 29] // Depth is 29 for Sprout + }], + outputs: vec![sapling_crypto::circuit::sprout::JSOutput { + value: None, + a_pk: None, + r: None + }, sapling_crypto::circuit::sprout::JSOutput { + value: None, + a_pk: None, + r: None + }], + rt: None, + }).expect("parameters are invalid"); + + for ((a, b), c) in sapling_spend_contributions.into_iter() + .zip(sapling_output_contributions.into_iter()) + .zip(sprout_joinsplit_contributions) + { + let mut h = Blake2b::new(64); + h.update(&a); + h.update(&b); + h.update(&c); + let h = h.finalize(); + + println!("{}", into_hex(h.as_ref())); + } +} + +fn into_hex(h: &[u8]) -> String { + let mut f = String::new(); + + for byte in &h[..] { + f += &format!("{:02x}", byte); + } + + f +}