merge spartan repo

spartan/.cargo/config

@@ -0,0 +1,4 @@
+[build]
+rustflags = [
+  "-C", "target-cpu=native",
+]

spartan/.github/workflows/rust.yml

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+name: Build and Test Spartan
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build_nightly:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v2
+    - name: Install
+      run: rustup default nightly
+    - name: Install rustfmt Components
+      run: rustup component add rustfmt
+    - name: Install clippy
+      run: rustup component add clippy
+    - name: Build
+      run: cargo build --verbose
+    - name: Run tests
+      run: cargo test --verbose
+    - name: Build examples
+      run: cargo build --examples --verbose
+    - name: Check Rustfmt Code Style
+      run: cargo fmt --all -- --check
+    - name: Check clippy warnings
+      run: cargo clippy --all-targets --all-features -- -D warnings
+

spartan/.gitignore

@@ -0,0 +1,12 @@
+# Generated by Cargo
+# will have compiled files and executables
+/target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+*.txt

spartan/CODE_OF_CONDUCT.md

@@ -0,0 +1,9 @@
+# Microsoft Open Source Code of Conduct
+
+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
+
+Resources:
+
+- [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/)
+- [Microsoft Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/)
+- Contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with questions or concerns

spartan/CONTRIBUTING.md

@@ -0,0 +1,12 @@
+This project welcomes contributions and suggestions. Most contributions require you to
+agree to a Contributor License Agreement (CLA) declaring that you have the right to,
+and actually do, grant us the rights to use your contribution. For details, visit
+https://cla.microsoft.com.
+
+When you submit a pull request, a CLA-bot will automatically determine whether you need
+to provide a CLA and decorate the PR appropriately (e.g., label, comment). Simply follow the
+instructions provided by the bot. You will only need to do this once across all repositories using our CLA.
+
+This project has adopted the [Microsoft Open Source Code of Conduct](https://opensource.microsoft.com/codeofconduct/).
+For more information see the [Code of Conduct FAQ](https://opensource.microsoft.com/codeofconduct/faq/)
+or contact [opencode@microsoft.com](mailto:opencode@microsoft.com) with any additional questions or comments.

spartan/Cargo.toml

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+[package]
+name = "ark-spartan"
+# sync up with Arkwork's version
+version = "0.4.0"
+authors = [
+    # author of original Spartan paper and code base 
+    # for which this library is modified from
+    "Srinath Setty <srinath@microsoft.com>",
+    # authors who contributed to this modification
+    "Zhenfei Zhang <zhenfei.zhang@hotmail.com>",
+]
+edition = "2021"
+description = "Spartan ZKP system over arkworks"
+documentation = "https://docs.rs/spartan/"
+readme = "README.md"
+repository = "https://github.com/zhenfeizhang/ark-spartan"
+license-file = "LICENSE"
+keywords = ["zkSNARKs", "cryptography", "proofs"]
+
+[dependencies]
+merlin = "3.0.0"
+rand = "0.7.3"
+digest = "0.8.1"
+sha3 = "0.8.2"
+rayon = { version = "1.8.0", optional = true }
+subtle = { version = "2.4", default-features = false }
+rand_core = { version = "0.5", default-features = false }
+zeroize = { version = "1", default-features = false }
+itertools = "0.10.0"
+colored = "2.0.0"
+thiserror = "1.0"
+
+rand_chacha = { version = "0.3.0", default-features = false }
+
+ark-ec = { version = "^0.4.0", default-features = false }
+ark-ff = { version = "^0.4.0", default-features = false }
+ark-poly = { version = "^0.4.2", default-features = false }
+ark-poly-commit = { version = "0.4.0", default-features = false }
+ark-std = { version = "^0.4.0", default-features = false }
+ark-serialize = { version = "^0.4.0", default-features = false, features = [
+    "derive",
+] }
+
+ark-bls12-381 = { version = "^0.4.0", default-features = false, features = [
+    "curve",
+] }
+ark-crypto-primitives = { version = "^0.4.0", features = ["r1cs", "sponge"] }
+derivative = "2.2.0"
+
+[dev-dependencies]
+criterion = "0.3.1"
+
+
+[lib]
+name = "libspartan"
+path = "src/lib.rs"
+
+[[bin]]
+name = "snark"
+path = "profiler/snark.rs"
+
+[[bin]]
+name = "committed_relaxed_snark_zm"
+path = "profiler/committed_relaxed_snark_zm.rs"
+
+[[bin]]
+name = "committed_relaxed_snark_hyrax"
+path = "profiler/committed_relaxed_snark_hyrax.rs"
+
+[[bin]]
+name = "nizk"
+path = "profiler/nizk.rs"
+
+[[bench]]
+name = "snark"
+harness = false
+
+[[bench]]
+name = "nizk"
+harness = false
+
+[[bench]]
+name = "committed_relaxed_snark"
+harness = false
+
+[features]
+# default = ["curve25519-dalek/simd_backend"]
+default = ["parallel"]
+parallel = [
+    "ark-ec/parallel",
+    "ark-ff/parallel",
+    "ark-std/parallel",
+    "ark-poly/parallel",
+    "ark-poly-commit/parallel",
+    "rayon",
+]
+profile = []
+
+[patch.crates-io]
+ark-bls12-381 = { git = "https://github.com/arkworks-rs/curves/", rev = "3fded1f" }
+ark-crypto-primitives = { git = "https://github.com/arkworks-rs/crypto-primitives", rev = "d27a5c8" }
+ark-r1cs-std = { git = "https://github.com/arkworks-rs/r1cs-std/", rev = "2ca3bd7" }
+ark-ff = { git = "https://github.com/arkworks-rs/algebra/", rev = "c92be0e" }
+ark-ec = { git = "https://github.com/arkworks-rs/algebra/", rev = "c92be0e" }
+ark-poly = { git = "https://github.com/arkworks-rs/algebra/", rev = "c92be0e" }
+ark-serialize = { git = "https://github.com/arkworks-rs/algebra/", rev = "c92be0e" }
+ark-poly-commit = { git = "https://github.com/arkworks-rs/poly-commit/", rev = "c724fa6" }
+
+# ark-pallas = { git = "https://github.com/arkworks-rs/curves/", rev = "3fded1f" }
+# ark-vesta = { git = "https://github.com/arkworks-rs/curves/", rev = "3fded1f" }
+# ark-test-curves = { git = "https://github.com/arkworks-rs/algebra/", rev = "c92be0e" }

spartan/LICENSE

@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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

spartan/NOTICE.md

@@ -0,0 +1,73 @@
+This repository includes the following third-party open-source code.
+
+* The code in `src/scalar/ristretto255.rs` is derived from [bls12-381](https://github.com/zkcrypto/bls12_381). 
+Specifically, from [src/bls12_381/scalar.rs](https://github.com/zkcrypto/bls12_381/blob/master/src/scalar.rs) and [src/bls12_381/util.rs](https://github.com/zkcrypto/bls12_381/blob/master/src/util.rs), which has the following copyright and license.
+
+   Permission is hereby granted, free of charge, to any
+   person obtaining a copy of this software and associated
+   documentation files (the "Software"), to deal in the
+   Software without restriction, including without
+   limitation the rights to use, copy, modify, merge,
+   publish, distribute, sublicense, and/or sell copies of
+   the Software, and to permit persons to whom the Software
+   is furnished to do so, subject to the following
+   conditions:
+
+   The above copyright notice and this permission notice
+   shall be included in all copies or substantial portions
+   of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF
+   ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED
+   TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
+   PARTICULAR PURPOSE AND NONINFRINGEMENT. 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.
+
+
+* The `invert` and `batch_invert` methods in src/scalar/ristretto255.rs is from [curve25519-dalek](https://github.com/dalek-cryptography/curve25519-dalek), which has the following license.
+
+   Copyright (c) 2016-2019 Isis Agora Lovecruft, Henry de Valence. All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+  1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+
+  2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+
+  3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+   PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 
+
+   ========================================================================
+
+   Portions of curve25519-dalek were originally derived from Adam Langley's Go ed25519 implementation, found at <https://github.com/agl/ed25519/>, under the following licence:
+
+   ========================================================================
+
+   Copyright (c) 2012 The Go Authors. All rights reserved.
+
+   Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
+
+   * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
+   * Neither the name of Google Inc. nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.
+
+   THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+* The module `src/nizk/bullet.rs` is derived from [bulletproofs](https://github.com/dalek-cryptography/bulletproofs/), which has the following license:
+
+   MIT License
+
+   Copyright (c) 2018 Chain, Inc.
+
+   Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 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.