digest-io: initial implementation (#1172)

This crate contains `std::io`-compatibility wrappers which are moved
from the `digest` crate.

Author: newpavlov

.github/workflows/digest-io.yml

@@ -0,0 +1,43 @@
+name: digest-io
+
+on:
+  pull_request:
+      paths:
+        - "digest-io/**"
+        - "Cargo.*"
+  push:
+    branches: master
+
+permissions:
+  contents: read
+
+defaults:
+  run:
+    working-directory: digest-io
+
+env:
+  CARGO_INCREMENTAL: 0
+  RUSTFLAGS: "-Dwarnings"
+
+jobs:
+  minimal-versions:
+    uses: RustCrypto/actions/.github/workflows/minimal-versions.yml@master
+    with:
+        working-directory: ${{ github.workflow }}
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.85.0 # MSRV
+          - stable
+    steps:
+      - uses: actions/checkout@v4
+      - uses: RustCrypto/actions/cargo-cache@master
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust }}
+      - run: cargo test --no-default-features
+      - run: cargo test
+      - run: cargo test --all-features

Cargo.lock

@@ -8,6 +8,7 @@ members = [
     "cmov",
     "cpufeatures",
     "dbl",
+    "digest-io",
     "fiat-constify",
     "hex-literal",
     "inout",

Cargo.toml

@@ -0,0 +1,10 @@
+# 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).
+
+## 0.1.0 (UNRELEASED)
+- Initial release ([#1172])
+
+[#1172]: https://github.com/RustCrypto/utils/pull/1172

digest-io/CHANGELOG.md

@@ -0,0 +1,17 @@
+[package]
+name = "digest-io"
+version = "0.1.0"
+description = "std::io-compatibility wrappers for traits defined in the digest crate"
+authors = ["RustCrypto Developers"]
+license = "MIT OR Apache-2.0"
+edition = "2024"
+rust-version = "1.85"
+documentation = "https://docs.rs/digest-io"
+repository = "https://github.com/RustCrypto/utils"
+categories = ["cryptography"]
+readme = "README.md"
+
+[dependencies]
+digest = "0.11.0-pre.10"
+sha2 = "0.11.0-pre.5"
+sha3 = "0.11.0-pre.5"