close issue 70 and badge (#71)

* chore: fix actions badge

* test: fix assertion

* chore: fix array method and fmt actions

.github/workflows/rust.yml

@@ -12,7 +12,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: Install
-      run: rustup default stable 
+      run: rustup default stable
     - name: Install rustfmt Components
       run: rustup component add rustfmt
     - name: Install clippy
@@ -28,30 +28,21 @@ jobs:
     - name: Check clippy warnings
       run: cargo clippy --all-targets --all-features -- -D warnings
 
-
-
   build_wasm:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v2
-
     - name: Install
-      run: rustup default stable 
-
+      run: rustup default stable
     - name: Build without std
       run: cargo build --no-default-features --verbose
-
     - name: Run tests without std
       run: cargo test --no-default-features --verbose
-
     - name: Build examples without std
       run: cargo build --examples --no-default-features --verbose
-
     - name: Install wasm32-wasi target
       run: rustup target add wasm32-wasi
-
     - name: Install wasm32-unknown-unknown target
       run: rustup target add wasm32-unknown-unknown
-
     - name: Build for target wasm-wasi
       run: RUSTFLAGS="" cargo build --target=wasm32-wasi --no-default-features --verbose

README.md

@@ -1,6 +1,6 @@
 # Spartan: High-speed zkSNARKs without trusted setup
 
-![Rust](https://github.com/microsoft/Spartan/workflows/Rust/badge.svg)
+![Rust](https://github.com/microsoft/Spartan/actions/workflows/rust.yml/badge.svg)
 [![](https://img.shields.io/crates/v/spartan.svg)](<(https://crates.io/crates/spartan)>)
 
 Spartan is a high-speed zero-knowledge proof system, a cryptographic primitive that enables a prover to prove a mathematical statement to a verifier without revealing anything besides the validity of the statement. This repository provides `libspartan,` a Rust library that implements a zero-knowledge succinct non-interactive argument of knowledge (zkSNARK), which is a type of zero-knowledge proof system with short proofs and fast verification times. The details of the Spartan proof system are described in our [paper](https://eprint.iacr.org/2019/550) published at [CRYPTO 2020](https://crypto.iacr.org/2020/). The security of the Spartan variant implemented in this library is based on the discrete logarithm problem in the random oracle model.

src/sparse_mlpoly.rs

@@ -1234,10 +1234,8 @@ impl ProductLayerProof {
     let (row_eval_init, row_eval_read, row_eval_write, row_eval_audit) = &self.eval_row;
     assert_eq!(row_eval_write.len(), num_instances);
     assert_eq!(row_eval_read.len(), num_instances);
-    let ws: Scalar = (0..row_eval_write.len())
-      .map(|i| row_eval_write[i])
-      .product();
-    let rs: Scalar = (0..row_eval_read.len()).map(|i| row_eval_read[i]).product();
+    let ws: Scalar = row_eval_write.iter().product();
+    let rs: Scalar = row_eval_read.iter().product();
     assert_eq!(row_eval_init * ws, rs * row_eval_audit);
 
     row_eval_init.append_to_transcript(b"claim_row_eval_init", transcript);
@@ -1249,10 +1247,8 @@ impl ProductLayerProof {
     let (col_eval_init, col_eval_read, col_eval_write, col_eval_audit) = &self.eval_col;
     assert_eq!(col_eval_write.len(), num_instances);
     assert_eq!(col_eval_read.len(), num_instances);
-    let ws: Scalar = (0..col_eval_write.len())
-      .map(|i| col_eval_write[i])
-      .product();
-    let rs: Scalar = (0..col_eval_read.len()).map(|i| col_eval_read[i]).product();
+    let ws: Scalar = col_eval_write.iter().product();
+    let rs: Scalar = col_eval_read.iter().product();
     assert_eq!(col_eval_init * ws, rs * col_eval_audit);
 
     col_eval_init.append_to_transcript(b"claim_col_eval_init", transcript);
@@ -1262,7 +1258,7 @@ impl ProductLayerProof {
 
     // verify the evaluation of the sparse polynomial
     let (eval_dotp_left, eval_dotp_right) = &self.eval_val;
-    assert_eq!(eval_dotp_left.len(), eval_dotp_left.len());
+    assert_eq!(eval_dotp_left.len(), eval_dotp_right.len());
     assert_eq!(eval_dotp_left.len(), num_instances);
     let mut claims_dotp_circuit: Vec<Scalar> = Vec::new();
     for i in 0..num_instances {