aead-stream: extract implementation from the aead crate (#627)

This PR extracts implementation of the STREAM construction from the
`aead` crate into a separate crate as was proposed in
RustCrypto/traits#1665.

.github/workflows/aead-stream.yml

@@ -0,0 +1,67 @@
+name: aead-stream
+
+on:
+  pull_request:
+    paths:
+      - ".github/workflows/aead-stream.yml"
+      - "aead-stream/**"
+      - "Cargo.*"
+  push:
+    branches: master
+
+defaults:
+  run:
+    working-directory: aead-stream
+
+env:
+  CARGO_INCREMENTAL: 0
+  RUSTFLAGS: "-Dwarnings"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.65.0 # MSRV
+          - stable
+        target:
+          - thumbv7em-none-eabi
+          - wasm32-unknown-unknown
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust }}
+          targets: ${{ matrix.target }}
+      - run: cargo build --no-default-features --release --target ${{ matrix.target }}
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        include:
+          # 32-bit Linux
+          - target: i686-unknown-linux-gnu
+            rust: 1.65.0 # MSRV
+            deps: sudo apt update && sudo apt install gcc-multilib
+          - target: i686-unknown-linux-gnu
+            rust: stable
+            deps: sudo apt update && sudo apt install gcc-multilib
+
+          # 64-bit Linux
+          - target: x86_64-unknown-linux-gnu
+            rust: 1.65.0 # MSRV
+          - target: x86_64-unknown-linux-gnu
+            rust: stable
+    steps:
+      - uses: actions/checkout@v4
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust }}
+          targets: ${{ matrix.target }}
+      - run: ${{ matrix.deps }}
+      - run: cargo test --target ${{ matrix.target }} --release --no-default-features
+      - run: cargo test --target ${{ matrix.target }} --release
+      - run: cargo test --target ${{ matrix.target }} --release --all-features
+      - run: cargo build --target ${{ matrix.target }} --benches

Cargo.toml

@@ -1,5 +1,6 @@
 [workspace]
 members = [
+    "aead-stream",
     "aes-gcm",
     "aes-gcm-siv",
     "aes-siv",

README.md

@@ -18,6 +18,7 @@ crate.
 
 | Name                 | Algorithm                    | Crates.io | Documentation | MSRV |
 |----------------------|------------------------------|-----------|---------------|-------|
+| [`aead-stream`]      | [STREAM]                | [![crates.io](https://img.shields.io/crates/v/aead-stream.svg)](https://crates.io/crates/aead-stream) | [![Documentation](https://docs.rs/aead-stream/badge.svg)](https://docs.rs/aead-stream) | 1.65 |
 | [`aes-gcm-siv`]      | [AES-GCM-SIV]                | [![crates.io](https://img.shields.io/crates/v/aes-gcm-siv.svg)](https://crates.io/crates/aes-gcm-siv) | [![Documentation](https://docs.rs/aes-gcm-siv/badge.svg)](https://docs.rs/aes-gcm-siv) | 1.51 |
 | [`aes-gcm`]          | [AES-GCM]                    | [![crates.io](https://img.shields.io/crates/v/aes-gcm.svg)](https://crates.io/crates/aes-gcm) | [![Documentation](https://docs.rs/aes-gcm/badge.svg)](https://docs.rs/aes-gcm) | 1.51 |
 | [`aes-siv`]          | [AES-SIV]                    | [![crates.io](https://img.shields.io/crates/v/aes-siv.svg)](https://crates.io/crates/aes-siv) | [![Documentation](https://docs.rs/aes-siv/badge.svg)](https://docs.rs/aes-siv) | 1.51 |
@@ -76,6 +77,7 @@ dual licensed as above, without any additional terms or conditions.
 
 [//]: # (algorithms)
 
+[STREAM]: https://eprint.iacr.org/2015/189.pdf
 [AES-GCM]: https://en.wikipedia.org/wiki/Galois/Counter_Mode
 [AES-GCM-SIV]: https://en.wikipedia.org/wiki/AES-GCM-SIV
 [AES-SIV]: https://github.com/miscreant/meta/wiki/AES-SIV

aead-stream/CHANGELOG.md

@@ -0,0 +1,8 @@
+# Changelog
+All notable changes to this project will be documented in this file.
+
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
+
+## UNRELEASED
+- Initial release

aead-stream/Cargo.toml

@@ -0,0 +1,19 @@
+[package]
+name = "aead-stream"
+version = "0.6.0-pre"
+description = "Generic implementation of the STREAM online authenticated encryption construction"
+authors = ["RustCrypto Developers"]
+edition = "2021"
+license = "Apache-2.0 OR MIT"
+readme = "README.md"
+documentation = "https://docs.rs/aead-stream"
+repository = "https://github.com/RustCrypto/AEADs"
+keywords = ["aead", "stream", "encryption"]
+categories = ["cryptography", "no-std"]
+rust-version = "1.65"
+
+[dependencies]
+aead = { version = "=0.6.0-rc.0", default-features = false, features = ["stream"] }
+
+[features]
+alloc = ["aead/alloc"]