Initial KBKDF implementation

.github/workflows/kbkdf.yml

@@ -0,0 +1,60 @@
+name: kbkdf
+
+on:
+  pull_request:
+    paths:
+      - "kbkdf/**"
+      - "Cargo.*"
+  push:
+    branches: master
+
+defaults:
+  run:
+    working-directory: kbkdf
+
+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: RustCrypto/actions/cargo-cache@master
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust }}
+          targets: ${{ matrix.target }}
+      - run: cargo build --no-default-features --target ${{ matrix.target }}
+
+  minimal-versions:
+    uses: RustCrypto/actions/.github/workflows/minimal-versions.yml@master
+    with:
+        working-directory: ${{ github.workflow }}
+
+  test:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.65.0 # MSRV
+          - stable
+    steps:
+      - uses: actions/checkout@v4
+      - uses: RustCrypto/actions/cargo-cache@master
+      - uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust }}
+      - run: cargo check --all-features
+      - run: cargo test --no-default-features
+      - run: cargo test
+      - run: cargo test --all-features

Cargo.toml

@@ -5,6 +5,7 @@ members = [
     "hkdf",
     "concat-kdf",
     "ansi-x963-kdf",
+    "kbkdf",
 ]
 
 [profile.dev]

kbkdf/Cargo.toml

@@ -0,0 +1,35 @@
+[package]
+name = "kbkdf"
+version = "0.1.0"
+edition = "2018"
+authors = ["RustCrypto Developers"]
+license = "MIT OR Apache-2.0"
+homepage = "https://github.com/RustCrypto/KDFs/"
+repository = "https://github.com/RustCrypto/KDFs/"
+description = "Key Derivation Using Pseudorandom Function (KBKDF)"
+keywords = ["crypto", "KBKDF", "KDF"]
+categories = ["cryptography", "no-std"]
+readme = "README.md"
+rust-version = "1.65"
+
+[dependencies]
+digest = { version = "0.11.0-pre.9", default-features = false, features = ["mac"] }
+
+# divrem can be dropped with MSRV >= 1.73
+divrem = "1.0.0"
+
+[dev-dependencies]
+hex-literal = "0.2.2"
+hex = "0.4"
+hmac = { version = "0.13.0-pre.4", default-features = false }
+sha2 = { version = "0.11.0-pre.2", default-features = false }
+sha1 = { version = "0.11.0-pre.2", default-features = false }
+cmac = "0.8.0-pre.2"
+aes = "0.9.0-pre.2"
+
+[features]
+std = ["hmac/std"]
+
+[package.metadata.docs.rs]
+all-features = true
+rustdoc-args = ["--cfg", "docsrs"]