Rename concat-kdf to one-step-kdf

The name of the KDF was changed in the latest revision of NIST SP 800-56

https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-56Cr2.pdf

Author: tarcieri

.github/workflows/concat-kdf.yml .github/workflows/one-step-kdf.yml.github/workflows/concat-kdf.yml renamed to .github/workflows/one-step-kdf.yml

@@ -1,17 +1,17 @@
-name: concat-kdf
+name: one-step-kdf
 
 on:
   pull_request:
     paths:
-      - ".github/workflows/concat-kdf.yml"
-      - "concat-kdf/**"
+      - ".github/workflows/one-step-kdf.yml"
+      - "one-step-kdf/**"
       - "Cargo.*"
   push:
     branches: master
 
 defaults:
   run:
-    working-directory: concat-kdf
+    working-directory: one-step-kdf
 
 env:
   CARGO_INCREMENTAL: 0

Cargo.lock

@@ -1,11 +1,11 @@
 [workspace]
 resolver = "2"
 members = [
+    "ansi-x963-kdf",
     "bake-kdf",
     "hkdf",
-    "concat-kdf",
-    "ansi-x963-kdf",
     "kbkdf",
+    "one-step-kdf"
 ]
 
 [profile.dev]

Cargo.toml

@@ -1,14 +1,14 @@
 [package]
-name = "concat-kdf"
-version = "0.2.0-pre"
-description = "Concatenation Key Derivation Function (Concat KDF)"
+name = "one-step-kdf"
+version = "0.1.0-pre"
+description = "One-Step Key Derivation Function as defined in NIST SP 800-56C R2"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
 readme = "README.md"
 edition = "2024"
-documentation = "https://docs.rs/concat-kdf"
+documentation = "https://docs.rs/one-step-kdf"
 repository = "https://github.com/RustCrypto/KDFs"
-keywords = ["crypto", "concat-kdf", "KDF", "NIST"]
+keywords = ["crypto", "one-step-kdf", "KDF", "NIST"]
 categories = ["cryptography", "no-std"]
 rust-version = "1.85"
 

concat-kdf/CHANGELOG.md one-step-kdf/CHANGELOG.mdconcat-kdf/CHANGELOG.md renamed to one-step-kdf/CHANGELOG.md

@@ -1,27 +1,29 @@
-# RustCrypto: Concat KDF
+# RustCrypto: One-Step KDF
 
 [![crate][crate-image]][crate-link]
 [![Docs][docs-image]][docs-link]
+[![Build Status][build-image]][build-link]
 ![Apache2/MIT licensed][license-image]
 ![Rust Version][rustc-image]
 [![Project Chat][chat-image]][chat-link]
-[![Build Status][build-image]][build-link]
 
-Pure Rust implementation of the Concatenation Key Derivation Function (Concat KDF) generic over hash function. 
-This function is described in the section 5.8.1 of [NIST SP 800-56A, Recommendation for Pair-Wise Key Establishment
-Schemes Using Discrete Logarithm Cryptography](https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-56ar.pdf).
+Pure Rust implementation of the One-Step Key Derivation Function (formerly known as Concat KDF)
+implemented generically over the underlying hash function.
+
+This KDF is described in the section 4 of
+[NIST SP 800-56C: Recommendation for Key-Derivation Methods in Key-Establishment Schemes](https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-56Cr2.pdf).
 
 # Usage
 
-The most common way to use Concat KDF is as follows: you generate a shared secret with other party
+The most common way to use One-Step KDF is as follows: you generate a shared secret with other party
 (e.g. via Diffie-Hellman algorithm) and use key derivation function to derive a shared key.
 
 ```rust
 use hex_literal::hex;
 use sha2::Sha256;
 
 let mut key = [0u8; 16];
-concat_kdf::derive_key_into::<Sha256>(b"secret", b"shared-info", &mut key).unwrap();
+one_step_kdf::derive_key_into::<Sha256>(b"secret", b"shared-info", &mut key).unwrap();
 assert_eq!(key, hex!("960db2c549ab16d71a7b008e005c2bdc"));
 ```
 
@@ -40,13 +42,13 @@ Unless you explicitly state otherwise, any contribution intentionally submitted
 for inclusion in the work by you, as defined in the Apache-2.0 license, shall be
 dual licensed as above, without any additional terms or conditions.
 
-[crate-image]: https://img.shields.io/crates/v/concat-kdf.svg
-[crate-link]: https://crates.io/crates/concat-kdf
-[docs-image]: https://docs.rs/concat-kdf/badge.svg
-[docs-link]: https://docs.rs/concat-kdf/
+[crate-image]: https://img.shields.io/crates/v/one-step-kdf.svg
+[crate-link]: https://crates.io/crates/one-step-kdf
+[docs-image]: https://docs.rs/one-step-kdf/badge.svg
+[docs-link]: https://docs.rs/one-step-kdf/
+[build-image]: https://github.com/RustCrypto/KDFs/actions/workflows/one-step-kdf.yml/badge.svg
+[build-link]: https://github.com/RustCrypto/KDFs/actions/workflows/one-step-kdf.yml
 [license-image]: https://img.shields.io/badge/license-Apache2.0/MIT-blue.svg
 [rustc-image]: https://img.shields.io/badge/rustc-1.85+-blue.svg
 [chat-image]: https://img.shields.io/badge/zulip-join_chat-blue.svg
 [chat-link]: https://rustcrypto.zulipchat.com/#narrow/stream/260043-KDFs
-[build-image]: https://github.com/RustCrypto/KDFs/workflows/concat-kdf/badge.svg?branch=master&event=push
-[build-link]: https://github.com/RustCrypto/KDFs/actions?query=workflow:concat-kdf

concat-kdf/Cargo.toml one-step-kdf/Cargo.tomlconcat-kdf/Cargo.toml renamed to one-step-kdf/Cargo.toml

@@ -19,7 +19,7 @@ use digest::{Digest, FixedOutputReset, Update, array::typenum::Unsigned};
 /// use sha2::Sha256;
 ///
 /// let mut key = [0u8; 16];
-/// concat_kdf::derive_key_into::<Sha256>(b"secret", b"shared-info", &mut key).unwrap();
+/// one_step_kdf::derive_key_into::<Sha256>(b"secret", b"shared-info", &mut key).unwrap();
 /// assert_eq!(key, hex!("960db2c549ab16d71a7b008e005c2bdc"));
 /// ```
 pub fn derive_key_into<D>(secret: &[u8], other_info: &[u8], key: &mut [u8]) -> Result<(), Error>
@@ -53,7 +53,7 @@ where
     Ok(())
 }
 
-/// Concat KDF errors.
+/// One-Step KDF errors.
 #[derive(Clone, Copy, Debug, PartialEq)]
 pub enum Error {
     /// The length of the secret is zero.

concat-kdf/LICENSE-APACHE one-step-kdf/LICENSE-APACHEconcat-kdf/LICENSE-APACHE renamed to one-step-kdf/LICENSE-APACHE

@@ -16,7 +16,7 @@ where
         let mut buf = [0u8; 256];
         for key_length in 1..f.expected_key.len() {
             let key = &mut buf[..key_length];
-            concat_kdf::derive_key_into::<D>(f.secret, f.other_info, key).unwrap();
+            one_step_kdf::derive_key_into::<D>(f.secret, f.other_info, key).unwrap();
             assert_eq!(&f.expected_key[..key_length], key);
         }
     }
@@ -175,15 +175,15 @@ fn test_input_output_sha512() {
 #[test]
 fn test_no_secret() {
     assert_eq!(
-        concat_kdf::derive_key_into::<Sha512>(&[], &[], &mut [0u8; 42]),
-        Err(concat_kdf::Error::NoSecret)
+        one_step_kdf::derive_key_into::<Sha512>(&[], &[], &mut [0u8; 42]),
+        Err(one_step_kdf::Error::NoSecret)
     );
 }
 
 #[test]
 fn test_no_output() {
     assert_eq!(
-        concat_kdf::derive_key_into::<Sha512>(&[0u8; 42], &[], &mut [0u8; 0]),
-        Err(concat_kdf::Error::NoOutput)
+        one_step_kdf::derive_key_into::<Sha512>(&[0u8; 42], &[], &mut [0u8; 0]),
+        Err(one_step_kdf::Error::NoOutput)
     );
 }