WASM bindings

.github/workflows/nucypher-core.yml

@@ -43,6 +43,27 @@ jobs:
       - run: cargo check --all-features
       - run: cargo test --release --all-features
 
+  wasm-test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.56.0 # MSRV
+          - stable
+        target:
+          - wasm32-unknown-unknown
+
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          target: ${{ matrix.target }}
+          override: true
+      - run: cargo install wasm-pack
+      - run: wasm-pack test --node
+
   trigger-wheels:
     runs-on: ubuntu-latest
     needs: test

Cargo.toml

@@ -2,8 +2,5 @@
 members = [
     "nucypher-core",
     "nucypher-core-python",
+    "nucypher-core-wasm",
 ]
-
-# Prevents feature conflicts between [dependencies] and [dev-dependencies]
-# Will be the default in 2021 edition.
-resolver = "2"

nucypher-core-python/Cargo.toml

@@ -10,7 +10,7 @@ crate-type = ["cdylib"]
 [dependencies]
 pyo3 = "0.15"
 nucypher-core = { path = "../nucypher-core" }
-umbral-pre = { version = "0.5", features = ["bindings-python", "serde-support"] }
+umbral-pre = { version = "0.5.1", features = ["bindings-python", "serde-support"] }
 
 [build-dependencies]
 pyo3-build-config = "*"

nucypher-core-python/src/lib.rs

@@ -300,7 +300,7 @@ impl TreasureMap {
             .into_iter()
             .map(|(address_bytes, (key, vkfrag))| {
                 try_make_address(address_bytes)
-                    .map(|address| (address, (key.backend, vkfrag.backend)))
+                    .map(|address| (address, (key.backend, vkfrag.backend.clone())))
             })
             .collect::<PyResult<Vec<_>>>()?;
         Ok(Self {

nucypher-core-wasm/.gitignore

@@ -0,0 +1 @@
+pkg

nucypher-core-wasm/Cargo.toml

@@ -0,0 +1,34 @@
+[package]
+name = "nucypher-core-wasm"
+version = "0.1.0"
+authors = [
+    "Bogdan Opanchuk <bogdan@opanchuk.net>",
+    "Piotr Roslaniec <p.roslaniec@gmail.com>"
+]
+edition = "2021"
+license = "GPL-3.0-only"
+description = "NuCypher network core data structures"
+repository = "https://github.com/nucypher/nucypher-core/tree/master/nucypher-core-wasm"
+readme = "README.md"
+categories = ["cryptography", "no-std"]
+
+[lib]
+crate-type = ["cdylib", "rlib"]
+
+[features]
+default = ["console_error_panic_hook"]
+
+[dependencies]
+umbral-pre = { version = "0.5.1", features = ["bindings-wasm"] }
+nucypher-core = { path = "../nucypher-core" }
+wasm-bindgen = { version = "0.2.74", features = ["serde-serialize"] }
+js-sys = "0.3.51"
+wee_alloc = "0.4"
+ethereum-types = "0.12.1"
+serde-wasm-bindgen = "0.3.1"
+serde = { version = "1.0.130", features = ["derive"] }
+console_error_panic_hook = { version = "0.1.6", optional = true }
+
+[dev-dependencies]
+console_error_panic_hook = "0.1.7"
+wasm-bindgen-test = "0.3.28"