sec1: Elliptic-Curve-Point-to-Octet-String encoding

.github/workflows/pkcs1.yml

@@ -6,6 +6,7 @@ on:
       - "base64ct/**"
       - "const-oid/**"
       - "der/**"
+      - "pem-rfc7468/**"
       - "pkcs1/**"
       - "Cargo.*"
   push:

.github/workflows/pkcs8.yml

@@ -6,6 +6,7 @@ on:
       - "base64ct/**"
       - "const-oid/**"
       - "der/**"
+      - "pem-rfc7468/**"
       - "pkcs8/**"
       - "spki/**"
       - "Cargo.*"

.github/workflows/sec1.yml

@@ -0,0 +1,65 @@
+name: sec1
+
+on:
+  pull_request:
+    paths:
+      - "base64ct/**"
+      - "const-oid/**"
+      - "der/**"
+      - "pem-rfc7468/**"
+      - "sec1/**"
+      - "Cargo.*"
+  push:
+    branches: master
+
+defaults:
+  run:
+    working-directory: sec1
+
+env:
+  CARGO_INCREMENTAL: 0
+  RUSTFLAGS: "-Dwarnings"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.51.0 # MSRV
+          - stable
+        target:
+          - thumbv7em-none-eabi
+          - 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 build --target ${{ matrix.target }} --release --no-default-features
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features pem
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features subtle
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features zeroize
+      - run: cargo build --target ${{ matrix.target }} --release --no-default-features --features alloc,pem,subtle,zeroize
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.51.0 # MSRV
+          - stable
+    steps:
+      - uses: actions/checkout@v1
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - run: cargo test --release --no-default-features
+      - run: cargo test --release
+      - run: cargo test --release --all-features

sec1/Cargo.toml

@@ -3,7 +3,8 @@ name = "sec1"
 version = "0.0.0" # Also update html_root_url in lib.rs when bumping this
 description = """
 Pure Rust implementation of SEC1: Elliptic Curve Cryptography encoding formats
-including ASN.1 DER-serialized private keys
+including ASN.1 DER-serialized private keys as well as the
+Elliptic-Curve-Point-to-Octet-String encoding
 """
 authors = ["RustCrypto Developers"]
 license = "Apache-2.0 OR MIT"
@@ -15,9 +16,11 @@ readme = "README.md"
 
 [dependencies]
 der = { version = "0.4", features = ["oid"], path = "../der" }
+generic-array = { version = "0.14", default-features = false }
 
 # optional dependencies
 pem-rfc7468 = { version = "0.2", optional = true, path = "../pem-rfc7468" }
+subtle = { version = ">=2, <2.5", optional = true, default-features = false }
 zeroize = { version = "1", optional = true, default-features = false, features = ["alloc"] }
 
 [dev-dependencies]

sec1/src/error.rs

@@ -5,7 +5,7 @@ use core::fmt;
 #[cfg(feature = "pem")]
 use crate::pem;
 
-/// Result type
+/// Result type with `sec1` crate's [`Error`] type.
 pub type Result<T> = core::result::Result<T, Error>;
 
 /// Error type
@@ -42,6 +42,10 @@ pub enum Error {
     #[cfg_attr(docsrs, doc(cfg(feature = "std")))]
     PermissionDenied,
 
+    /// Errors relating to the `Elliptic-Curve-Point-to-Octet-String` or
+    /// `Octet-String-to-Elliptic-Curve-Point` encodings.
+    PointEncoding,
+
     /// Version errors
     Version,
 }
@@ -57,6 +61,7 @@ impl fmt::Display for Error {
             Error::Io => f.write_str("I/O error"),
             #[cfg(feature = "pem")]
             Error::Pem(err) => write!(f, "SEC1 {}", err),
+            Error::PointEncoding => f.write_str("elliptic curve point encoding error"),
             Error::Version => f.write_str("SEC1 version error"),
             #[cfg(feature = "std")]
             Error::PermissionDenied => f.write_str("permission denied"),

sec1/src/lib.rs

@@ -1,5 +1,6 @@
-//! Pure Rust implementation of [SEC1: Elliptic Curve Cryptography] encoding formats
-//! including ASN.1 DER-serialized private keys.
+//! Pure Rust implementation of [SEC1: Elliptic Curve Cryptography] encoding
+//! formats including ASN.1 DER-serialized private keys as well as the
+//! `Elliptic-Curve-Point-to-Octet-String` encoding.
 //!
 //! # Minimum Supported Rust Version
 //! This crate requires **Rust 1.51** at a minimum.
@@ -20,6 +21,8 @@ extern crate alloc;
 #[cfg(feature = "std")]
 extern crate std;
 
+pub mod point;
+
 mod error;
 mod parameters;
 mod private_key;
@@ -30,6 +33,7 @@ pub use der;
 pub use self::{
     error::{Error, Result},
     parameters::EcParameters,
+    point::EncodedPoint,
     private_key::EcPrivateKey,
     traits::FromEcPrivateKey,
 };