Update dependencies and clean up the code

.github/workflows/rust.yml

@@ -0,0 +1,38 @@
+name: Rust
+
+on:
+  push:
+    branches: [ '**' ]
+  pull_request:
+    branches: [ '**' ]
+
+env:
+  CARGO_TERM_COLOR: always
+  RUSTFLAGS: '-D warnings'
+
+jobs:
+  test:
+    name: Run tests
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: dtolnay/rust-toolchain@stable
+    - run: cargo test
+
+  clippy:
+    name: Check that clippy is happy
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: dtolnay/rust-toolchain@stable
+      with:
+        components: clippy
+    - run: cargo clippy --target x86_64-unknown-linux-gnu
+
+  bench:
+    name: Check that benchmarks compile
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+    - uses: dtolnay/rust-toolchain@stable
+    - run: cargo build --benches

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "schnorrkel"
-version = "0.10.2"
+version = "0.11.0"
 authors = ["Jeff Burdges <[email protected]>"]
 readme = "README.md"
 license = "BSD-3-Clause"
@@ -10,114 +10,45 @@ keywords = ["cryptography", "ed25519", "curve25519", "signature", "ECC"]
 categories = ["cryptography", "no-std"]
 description = "Schnorr VRF, signatures, etc. using the Ristretto group"
 exclude = [ ".gitignore", "res/*" ]
-edition = "2018"
+edition = "2021"
 
-# [badges]
-# travis-ci = { repository = "dalek-cryptography/ed25519-dalek", branch = "master"}
-
-[dependencies.aead]
-version = "0.4.3"
-default-features = false
-optional = true
-
-[dependencies.arrayref]
-version = "0.3.6"
-default-features = false
-
-[dependencies.arrayvec]
+[dependencies]
+aead = { version = "0.5.2", default-features = false, optional = true }
+arrayref = { version = "0.3.6", default-features = false }
 # needs to match parity-scale-code which is "=0.7.0"
-version = "0.7.0"
-default-features = false
-
-[dependencies.curve25519-dalek]
-package = "curve25519-dalek-ng"
-# git = "https://github.com/dalek-cryptography/curve25519-dalek"
-version = "4.1.1"
-default-features = false
-
-# [dependencies.ed25519-dalek]
-# version = "1.0.0"
-# default-features = false
-# optional = true
-
-[dependencies.subtle]
-package = "subtle-ng"
-version = "2.5.0"
-default-features = false
-
-[dependencies.merlin]
-version = "3.0.0"
-# features = ["debug-transcript"]
-default-features = false
-
-# [dependencies.rand]
-# version = "0.8.3"
-# default-features = false
-# optional = true
-
-[dependencies.rand_core]
-version = "0.6.2"
-default-features = false
-
-[dependencies.rand_chacha]
-version = "0.3.1"
-default-features = false
-optional = true
-
-[dependencies.serde_crate]
-version = "1.0.130"
-package = "serde"
-default-features = false
-optional = true
-
-[dependencies.serde_bytes]
-version = "0.11.5"
-default-features = false
-optional = true
-
-[dependencies.cfg-if]
-version = "1.0.0"
-optional = true
-
-[dependencies.sha2]
-version = "0.9.8"
-default-features = false
-
-[dependencies.failure]
-version = "0.1.8"
-default-features = false
-optional = true
-
-[dependencies.zeroize]
-version = "1.4.2"
-default-features = false
-features = ["zeroize_derive"]
+arrayvec = { version = "0.7.0", default-features = false }
+curve25519-dalek = { version = "4.0.0-rc.2", default-features = false, features = ["digest", "zeroize"] }
+subtle = { version = "2.5.0", default-features = false }
+merlin = { version = "3.0.0", default-features = false }
+rand_core = { version = "0.6.2", default-features = false }
+serde_crate = { version = "1.0.130", package = "serde", default-features = false, optional = true }
+serde_bytes = { version = "0.11.5", default-features = false, optional = true }
+cfg-if = { version = "1.0.0", optional = true }
+sha2 = { version = "0.10.6", default-features = false }
+failure = { version = "0.1.8", default-features = false, optional = true }
+zeroize = { version = "1.4.2", default-features = false, features = ["zeroize_derive"] }
 
 [dev-dependencies]
 rand = "0.8.4"
-rand_chacha = "0.3.1"
-# hex = "0.3.2"
-hex-literal = "0.3.3"
-sha2 = "0.9.8"
-sha3 = "0.9.1"
+rand_chacha = { version = "0.3.1", default-features = false }
+hex-literal = "0.4.1"
+sha3 = "0.10.7"
 bincode = "1.3.3"
-criterion = "0.3.5"
+criterion = "0.4.0"
 serde_json = "1.0.68"
 
 [[bench]]
 name = "schnorr_benchmarks"
 harness = false
 
 [features]
-default = ["std", "u64_backend", "getrandom"] # "rand"
+default = ["std", "getrandom", "precomputed-tables"]
 preaudit_deprecated = []
-nightly = ["curve25519-dalek/nightly"] # "zeroize/nightly"
+nightly = []
 alloc = ["curve25519-dalek/alloc", "rand_core/alloc", "serde_bytes/alloc"]
-std = ["getrandom", "curve25519-dalek/std", "serde_bytes/std"] # "failure/std"
+std = ["alloc", "getrandom", "serde_bytes/std"]
 asm = ["sha2/asm"]
-u64_backend = ["curve25519-dalek/u64_backend"]
-u32_backend = ["curve25519-dalek/u32_backend"]
-avx2_backend = ["curve25519-dalek/avx2_backend"]
+precomputed-tables = ["curve25519-dalek/precomputed-tables"]
 serde = ["serde_crate", "serde_bytes", "cfg-if"]
 # We cannot make getrandom a direct dependency because rand_core makes
 # getrandom a feature name, which requires forwarding.