ripemd: Add OID support

.github/workflows/ripemd.yml

@@ -49,7 +49,9 @@ jobs:
     strategy:
       matrix:
         rust:
-          - 1.41.0 # MSRV
+          # Crate supports MSRV 1.41 without `oid` feature. We test true MSRV
+          # in the `test-msrv` job.
+          - 1.57.0
           - stable
     steps:
       - uses: actions/checkout@v3
@@ -63,3 +65,21 @@ jobs:
       - run: cargo test --no-default-features
       - run: cargo test
       - run: cargo test --all-features
+
+  # TODO: merge with test on MSRV bump to 1.57 or higher
+  test-msrv:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        rust:
+          - 1.57.0 # MSRV
+    steps:
+      - uses: actions/checkout@v3
+      - uses: RustCrypto/actions/cargo-cache@master
+      - uses: actions-rs/toolchain@v1
+        with:
+          profile: minimal
+          toolchain: ${{ matrix.rust }}
+          override: true
+      - run: cargo test --features oid
+      - run: cargo test --no-default-features

ripemd/CHANGELOG.md

@@ -5,6 +5,12 @@ 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).
 
+## 0.1.3 (2022-09-23)
+### Added
+- Feature-gated OID support ([#415])
+
+[#415]: https://github.com/RustCrypto/hashes/pull/415
+
 ## 0.1.2 (2022-09-16)
 ### Added
 - RIPEMD-128 algorithm ([#406])

ripemd/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "ripemd"
-version = "0.1.2"
+version = "0.1.3"
 description = "Pure Rust implementation of the RIPEMD hash functions"
 authors = ["RustCrypto Developers"]
 license = "MIT OR Apache-2.0"
@@ -12,12 +12,13 @@ keywords = ["crypto", "ripemd", "hash", "digest"]
 categories = ["cryptography", "no-std"]
 
 [dependencies]
-digest = "0.10.3"
+digest = "0.10.4"
 
 [dev-dependencies]
-digest = { version = "0.10.3", features = ["dev"] }
+digest = { version = "0.10.4", features = ["dev"] }
 hex-literal = "0.2.2"
 
 [features]
 default = ["std"]
 std = ["digest/std"]
+oid = ["digest/oid"] # Enable OID support. WARNING: Bumps MSRV to 1.57

ripemd/src/lib.rs

@@ -49,6 +49,8 @@
 pub use digest::{self, Digest};
 
 use core::fmt;
+#[cfg(feature = "oid")]
+use digest::const_oid::{AssociatedOid, ObjectIdentifier};
 use digest::{
     block_buffer::Eager,
     core_api::{
@@ -158,3 +160,27 @@ impl_ripemd!(Ripemd128Core, Ripemd128, c128, "128", "RIPEMD-128", U16);
 impl_ripemd!(Ripemd160Core, Ripemd160, c160, "160", "RIPEMD-160", U20);
 impl_ripemd!(Ripemd256Core, Ripemd256, c256, "256", "RIPEMD-256", U32);
 impl_ripemd!(Ripemd320Core, Ripemd320, c320, "320", "RIPEMD-320", U40);
+
+#[cfg(feature = "oid")]
+#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
+impl AssociatedOid for Ripemd128Core {
+    /// The OID used for the RIPEMD-160. There are two OIDs defined. The Teletrust one (which is
+    /// used by almost anybody, including BouncyCastle, OpenSSL, GnuTLS, etc. and the ISO one
+    /// (1.0.10118.3.0.50), which seems to be used by nobody.
+    const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.3.36.3.2.2");
+}
+
+#[cfg(feature = "oid")]
+#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
+impl AssociatedOid for Ripemd160Core {
+    /// The OID used for the RIPEMD-160. There are two OIDs defined. The Teletrust one (which is
+    /// used by almost anybody, including BouncyCastle, OpenSSL, GnuTLS, etc. and the ISO one
+    /// (1.0.10118.3.0.49), which seems to be used by Go and nobody else.
+    const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.3.36.3.2.1");
+}
+
+#[cfg(feature = "oid")]
+#[cfg_attr(docsrs, doc(cfg(feature = "oid")))]
+impl AssociatedOid for Ripemd256Core {
+    const OID: ObjectIdentifier = ObjectIdentifier::new_unwrap("1.3.36.3.2.3");
+}