Initial setup

.cargo/config.toml

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+[env]
+RUST_MIN_STACK = "8388608"

.config/nextest.toml

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+[profile.default]
+slow-timeout = { period = "180s", terminate-after = 5, grace-period = "30s" }
+

.github/workflows/ci.yaml

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+name: "Rust CI"
+on:
+  pull_request:
+
+jobs:
+  build:
+    name: cargo build
+    runs-on: [ubuntu-22.04-github-hosted-32core]
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          rustflags: ""
+      - name: Setup rust
+        run: |
+          rustup set profile minimal
+          rustup toolchain install nightly-2023-08-23
+          rustup default nightly-2023-08-23
+          cargo install cargo-nextest
+      - name: Compile
+        run: cargo build
+
+  test:
+    name: cargo test
+    runs-on: [ubuntu-22.04-github-hosted-32core]
+    needs: build
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          rustflags: ""
+      - name: Setup rust
+        run: |
+          rustup set profile minimal
+          rustup toolchain install nightly-2023-08-23
+          rustup default nightly-2023-08-23
+          cargo install cargo-nextest
+      - name: zkevm_test_harness - Main test 
+        run: cargo nextest run --release --manifest-path crates/zkevm_test_harness/Cargo.toml --test-threads 2
+      - name: Encodings test
+        run: cargo nextest run --release --manifest-path crates/circuit_encodings/Cargo.toml
+      - name: Api tests
+        run: cargo nextest run --release --manifest-path crates/circuit_sequencer_api/Cargo.toml
+      - name: Definitions test
+        run: cargo nextest run --release --manifest-path crates/circuit_definitions/Cargo.toml
+      - name: Kzg tests
+        run: cargo nextest run --release --manifest-path crates/kzg/Cargo.toml
+
+  formatting:
+    name: cargo fmt
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions-rust-lang/setup-rust-toolchain@v1
+        with:
+          components: rustfmt
+      - name: Rustfmt Check
+        uses: actions-rust-lang/rustfmt@v1

.github/workflows/deny.yaml

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+name: Cargo deny check
+on: pull_request
+jobs:
+  cargo-deny:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: EmbarkStudios/cargo-deny-action@v1

.gitignore

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 Cargo.lock
 .vscode
 *.log
+tmp_copy*

crates/circuit_definitions/.gitignore

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+/target
+Cargo.lock
+.idea
+.DS_Store

crates/circuit_definitions/Cargo.toml

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+[package]
+name = "circuit_definitions"
+version = "0.150.2"
+edition = "2021"
+authors = ["The Matter Labs Team <[email protected]>"]
+homepage = "https://zksync.io/"
+repository = "https://github.com/matter-labs/era-zkevm_test_harness/"
+license = "MIT OR Apache-2.0"
+keywords = ["blockchain", "zksync"]
+categories = ["cryptography"]
+description = "ZKsync Era circuits definitions"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
+circuit_encodings = { version = "0.150.2", path = "../circuit_encodings" }
+snark_wrapper = "=0.1.2"
+
+derivative = "2.2"
+serde = {version = "1", features = ["derive"]}
+crossbeam = "0.8"
+seq-macro = "0.3.5"
+
+[features]
+default = []
+log_tracing = ["circuit_encodings/log_tracing"]
+verbose_circuits = ["circuit_encodings/verbose_circuits"]

crates/circuit_definitions/README.md

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+# Circuits definitions crate
+
+This crate contains the 'outer layer' for multiple circuits. The concrete circuits code is in `era-zkevm_circuits`
+repository.
+
+## Code structure
+
+We have 13 different 'base layer' circuits (for example MainVM, Decomitter), and 3 recursive circuits (Leaf, Node and
+Scheduler).
+
+Base layer circuits are located in `src/base_layer`, Recursive circuits are in `src/recursion_layer`.
+
+We also have 'AUX' circuits: compressors and wrapper, that are run on top of the final Scheduler proof, and they are
+located in `src/aux_layer`.
+
+![circuits](https://user-images.githubusercontent.com/128217157/275817097-0a543476-52e5-437b-a7d3-10603d5833fa.png)
+
+`src/encodings` directory contain some helper structs that are used by the test harness (and should match the ones used
+in circuits themselves).
+
+## Circuit types
+
+We have 12 different circuit types (in witness, you might notice 13, as one circuit (events_dedup_and_sort) is used for
+both L1 messages and events).
+
+| Circuit name             | Location                     | Description                                                                                                                                                          |
+| ------------------------ | ---------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
+| Main VM                  | vm_main.rs                   | Executes OpCodes from the VM                                                                                                                                         |
+| CodeDecommittmentsSorter | sort_code_decommit.rs        | Verifies the order of requests for code decommitment (fetching bytecode based on hash).                                                                              |
+| CodeDecommiter           | code_decommiter.rs           | Unpacks the bytecode matching a given hash into memory.                                                                                                              |
+| LogDemuxer               | log_demux.rs                 | Splits the queue into 6 output ones (like keccak, sha, storage).                                                                                                     |
+| KeccakRoundFunction      | keccak256_round_functions.rs | Round of the keccak hash                                                                                                                                             |
+| Sha256RoundFunction      | sha256_round_function.rs     | Round of sha256 hash                                                                                                                                                 |
+| ECRecover                | ecrecover.rs                 | Verifies ECRecover                                                                                                                                                   |
+| RAMPermutation           | ram_permutation.rs           | Verifies the correctness of the RAM accesses - looking at the access queue, and checking that correct bytes values were read                                         |
+| StorageSorter            | storage_sort_dedup.rs        | Similar to RAM permutation, but for storage - checking that correct bytes were stored / read.                                                                        |
+| StorageApplication       | storage_apply.rs             | Verifies the final merkle root and storage diffs based on the data that was written during computation.                                                              |
+| EventsSorter             | events_sort_dedup.rs         | Verifies that a given 'unsorted' queue is matching the sorted one, without any repetitions. In this case, used for System Events.                                    |
+| L1MessagesSorter         | events_sort_dedup.rs         | It reuses the circuit above, but this time to sort user generated events (L2 -> L1 messages).                                                                        |
+| L1MessageHasher          | linear_hasher.rs             | Verifies that linear hash of L1 messages matches the content of the queue.                                                                                           |
+
+3 recursive circuits:
+
+| Circuit name | Location      | Description                                               |
+| ------------ | ------------- | --------------------------------------------------------- |
+| Leaf         | leaf_layer.rs | Aggregates 32 basic circuits of the same type             |
+| Node         | node_layer.rs | Aggregates 32 leaf (or node) circruits of the same type   |
+| Scheduler    | scheduler.rs  | Aggregates 13 nodes (1 from each type) into a final proof |
+
+And  'wrapper'/AUX circuits on top:
+
+| Circuit name | Location       | Description                                                                              |
+| ------------ | -------------- | ---------------------------------------------------------------------------------------- |
+| Compression  | compression.rs | Compresses the final scheduler proof                                                     |
+| Wrapper      | wrapper.rs     | Wraps the compressed proof into a SNARK to be verifierd on L1. (This is a SNARK circuit) |

crates/circuit_definitions/rust-toolchain.toml

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+[toolchain]
+channel = "nightly-2024-08-01"

crates/circuit_definitions/src/aux_definitions/mod.rs

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+pub mod witness_oracle;