PST/SQRT + Benches (#35)

* first version of the sqrt PST without the MIPP

* snarkpack integration

* snarkpack integration

* adding mipp as submodule directly

* snarkpack integration

* finalizing

* snarkpack integration

* update mipp with latestest optimisations and add preliminary
documentation

* improve codebase documentation

* remove unused imports and apply cargo fix changes

* passing v0.4

* adding gh action

* correct workflow item

* correct working dir and msrv

* remove unnecessary stuff

* wip

* wip

* remove circuit in fq as it's not needed now

* done for tonight

* wip

* wip

* sip

* prallelise commitment and groth16 verification

* finalise comments for mipp

* wip

* finalise comments

* wip

* compiling but test failing

* putting back non random blinds

* using absorb when we can

* absorbing scalar

* with bls12-381

* stuff

* trying to bring ark-blst to testudo

* correcting random implementation

* with square in place

* works with blst

* works with blst

* fix: don't require nightly Rust

With removing the `test` feature, it can also be built with a stable
Rust release and don't require a nightly Rust version.

* using ark-blst main branch

* started cleanup and added testudo benchmark

* add testudo snark and nizk in separate files

* rename functions that perform setups and add comments

* prototyping

* explain testudo-nizk

* add support for odd case in sqrt_pst

* add missing constraints and correct proof size for benchmarks

* add support for odd case in sqrt_pst

* fix typo in comment

* Documentation #31

* fix typo in comment

* Fix Cargo.toml and add benchmark for sqrt pst (#34)

* add benchmark for sqrt pst

* fix typo in comment

* add README

* comment from readme not executing

---------

Co-authored-by: Mara Mihali <maramihali@google.com>
Co-authored-by: Mara Mihali <mihalimara22@gmail.com>
Co-authored-by: Volker Mische <volker.mische@gmail.com>

.github/workflows/testudo.yml

@@ -1,37 +1,27 @@
 name: Build and Test Testudo
 
-on:
-  push:
-    branches: [master]
-  pull_request:
-    branches: [master]
-# The crate ark-ff uses the macro llvm_asm! when emitting asm which returns an
-# error because it was deprecated in favour of asm!. We temporarily overcome
-# this problem by setting the environment variable below (until the crate
-# is updated).
-env:
-  RUSTFLAGS: "--emit asm -C llvm-args=-x86-asm-syntax=intel"
+on: [push, pull_request]
 
 jobs:
-  build_nightly:
+  cargo-test:
     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
-      # cargo clippy uses cargo check which returns an error when asm is emitted
-      # we want to emit asm for ark-ff operations so we avoid using clippy for # now
-      # - name: Check clippy warnings
-      #   run: cargo clippy --all-targets --all-features
+      - name: Checkout sources
+        uses: actions/checkout@v2
+        with:
+          submodules: recursive
+
+      - name: Install toolchain
+        uses: actions-rs/toolchain@v1
+        with:
+          toolchain: stable
+          profile: minimal
+          override: true
+
+      - uses: Swatinem/rust-cache@v2
+        with:
+          shared-key: cache-${{ hashFiles('**/Cargo.lock') }}
+          cache-on-failure: true
+
+      - name: cargo test
+        run: RUST_LOG=info cargo test --all --all-features -- --nocapture