fix/update multi hash

.github/workflows/rust.yml

@@ -34,14 +34,14 @@ jobs:
         run: cargo test --verbose --all-features
 
   msrv:
-    name: Verify MSRV (1.85)
+    name: Verify MSRV (1.99)
     runs-on: ubuntu-latest
 
     steps:
       - uses: actions/checkout@v4
 
-      - name: Install Rust Toolchain (1.85)
-        uses: dtolnay/rust-toolchain@1.85.0
+      - name: Install Rust Toolchain (1.99)
+        uses: dtolnay/rust-toolchain@1.99.0
 
       - name: Check
         run: cargo check --all-features

CHANGELOG.md

@@ -5,6 +5,13 @@ All notable changes to this project are documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [0.3.0] - 2026-10-08
+
+### Changed
+
+- Raised the `multi-hash` requirement 1.1.2 → 2.0 and migrated the tests, benchmarks, and doc examples from the removed `Builder::new_from_bytes` API to the streaming builder shape (`Builder::new(codec)?` + `update(bytes)` + `try_build()`). The crate requires multi-hash 2.0.0, which declares `rust-version = "1.99"`. No public API changes.
+- Raised the MSRV from 1.85 to 1.99 and applied clippy 0.1.99 fixes.
+
 ## [0.2.0] - 2026-08-18
 
 ### Changed
@@ -56,6 +63,8 @@ This project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.htm
 
 - The `multi-base`, `multi-codec`, `multi-hash`, `multi-trait`, and `multi-util` dependencies use the published crates.io versions.
 
+[0.3.0]: https://github.com/cryptidtech/multi-cid/releases/tag/v0.3.0
+
 [0.2.0]: https://github.com/cryptidtech/multi-cid/releases/tag/v0.2.0
 
 [0.1.0]: https://github.com/cryptidtech/multi-cid/releases/tag/v0.1.0

Cargo.toml

@@ -1,8 +1,8 @@
 [package]
 name = "multi-cid"
-version = "0.2.0"
+version = "0.3.0"
 edition = "2021"
-rust-version = "1.85"
+rust-version = "1.99"
 authors = ["Dave Grantham <dwg@linuxprogrammer.org>"]
 description = "Content Identifier (CID) implementation compatible with IPFS and IPLD"
 repository = "https://github.com/cryptidtech/multi-cid.git"
@@ -16,12 +16,12 @@ default = ["serde", "dag_cbor"]
 dag_cbor = ["dep:multi-cbor", "multi-cbor/tags"]
 
 [dependencies]
-multi-base = { version = "1.0", default-features = false }
-multi-cbor = { version = "0.1", optional = true }
-multi-codec = "1.2"
-multi-hash = "1.1.2"
-multi-trait = { version = "1.0", default-features = false }
-multi-util = "1.1"
+multi-base = { version = "1.1", default-features = false }
+multi-cbor = { version = "0.2", optional = true }
+multi-codec = "1.6"
+multi-hash = "2.0"
+multi-trait = { version = "1.1", default-features = false }
+multi-util = "1.2"
 thiserror = "2.0"
 serde = { version = "1.0", default-features = false, features = [
   "alloc",
@@ -31,7 +31,7 @@ serde = { version = "1.0", default-features = false, features = [
 [dev-dependencies]
 criterion = "0.8"
 hex = "0.4"
-multi-cbor = "0.1"
+multi-cbor = "0.2"
 proptest = "1.11"
 serde_json = "1.0"
 serde_test = "1.0"

README.md

@@ -53,7 +53,7 @@ For DAG-CBOR tag 42 support:
 multi-cid = { version = "0.1", features = ["dag_cbor"] }
 ```
 
-MSRV: Rust 1.85 (Edition 2021).
+MSRV: Rust 1.99 (Edition 2021).
 
 ## Usage
 
@@ -63,10 +63,9 @@ use multi_codec::Codec;
 use multi_hash::Builder as MhBuilder;
 
 // Create a multihash
-let hash = MhBuilder::new_from_bytes(Codec::Sha2256, b"hello world")
-    .unwrap()
-    .try_build()
-    .unwrap();
+let mut hasher = MhBuilder::new(Codec::Sha2256).unwrap();
+hasher.update(b"hello world");
+let hash = hasher.try_build().unwrap();
 
 // Create a CID v1
 let cid = cid::Builder::new(Codec::Sha2256)

benches/multicid_bench.rs

@@ -10,10 +10,9 @@ use std::hint::black_box;
 
 /// Benchmark CID encoding
 fn bench_cid_encoding(c: &mut Criterion) {
-    let hash = MhBuilder::new_from_bytes(Codec::Sha2256, b"benchmark data")
-        .unwrap()
-        .try_build()
-        .unwrap();
+    let mut hasher = MhBuilder::new(Codec::Sha2256).unwrap();
+    hasher.update(b"benchmark data");
+    let hash = hasher.try_build().unwrap();
 
     let cid = cid::Builder::new(Codec::Cidv1)
         .with_target_codec(Codec::DagCbor)
@@ -30,10 +29,9 @@ fn bench_cid_encoding(c: &mut Criterion) {
 
 /// Benchmark CID decoding
 fn bench_cid_decoding(c: &mut Criterion) {
-    let hash = MhBuilder::new_from_bytes(Codec::Sha2256, b"benchmark data")
-        .unwrap()
-        .try_build()
-        .unwrap();
+    let mut hasher = MhBuilder::new(Codec::Sha2256).unwrap();
+    hasher.update(b"benchmark data");
+    let hash = hasher.try_build().unwrap();
 
     let cid = cid::Builder::new(Codec::Cidv1)
         .with_target_codec(Codec::DagCbor)

src/cid.rs

@@ -313,13 +313,10 @@ mod tests {
 
     #[test]
     fn test_v0() {
+        let mut hasher = mh::Builder::new(Codec::Sha2256).unwrap();
+        hasher.update(b"for great justice, move every zig!");
         let v0 = Builder::default()
-            .with_hash(
-                &mh::Builder::new_from_bytes(Codec::Sha2256, b"for great justice, move every zig!")
-                    .unwrap()
-                    .try_build()
-                    .unwrap(),
-            )
+            .with_hash(&hasher.try_build().unwrap())
             .try_build()
             .unwrap();
 
@@ -371,13 +368,10 @@ mod tests {
 
     #[test]
     fn test_v0_binary_roundtrip() {
+        let mut hasher = mh::Builder::new(Codec::Sha2256).unwrap();
+        hasher.update(b"for great justice, move every zig!");
         let v0 = Builder::default()
-            .with_hash(
-                &mh::Builder::new_from_bytes(Codec::Sha2256, b"for great justice, move every zig!")
-                    .unwrap()
-                    .try_build()
-                    .unwrap(),
-            )
+            .with_hash(&hasher.try_build().unwrap())
             .try_build()
             .unwrap();
         let v: Vec<u8> = v0.clone().into();
@@ -386,13 +380,10 @@ mod tests {
 
     #[test]
     fn test_v0_encoded_roundtrip() {
+        let mut hasher = mh::Builder::new(Codec::Sha2256).unwrap();
+        hasher.update(b"for great justice, move every zig!");
         let v0 = Builder::default()
-            .with_hash(
-                &mh::Builder::new_from_bytes(Codec::Sha2256, b"for great justice, move every zig!")
-                    .unwrap()
-                    .try_build()
-                    .unwrap(),
-            )
+            .with_hash(&hasher.try_build().unwrap())
             .try_build_legacy_encoded()
             .unwrap();
         let s = v0.to_string();
@@ -402,14 +393,11 @@ mod tests {
 
     #[test]
     fn test_v1() {
+        let mut hasher = mh::Builder::new(Codec::Sha3512).unwrap();
+        hasher.update(b"for great justice, move every zig!");
         let v1 = Builder::new(Codec::Cidv1)
             .with_target_codec(Codec::DagCbor)
-            .with_hash(
-                &mh::Builder::new_from_bytes(Codec::Sha3512, b"for great justice, move every zig!")
-                    .unwrap()
-                    .try_build()
-                    .unwrap(),
-            )
+            .with_hash(&hasher.try_build().unwrap())
             .try_build()
             .unwrap();
 
@@ -420,14 +408,11 @@ mod tests {
 
     #[test]
     fn test_v1_binary_roundtrip() {
+        let mut hasher = mh::Builder::new(Codec::Sha3512).unwrap();
+        hasher.update(b"for great justice, move every zig!");
         let v1 = Builder::new(Codec::Cidv1)
             .with_target_codec(Codec::DagCbor)
-            .with_hash(
-                &mh::Builder::new_from_bytes(Codec::Sha3512, b"for great justice, move every zig!")
-                    .unwrap()
-                    .try_build()
-                    .unwrap(),
-            )
+            .with_hash(&hasher.try_build().unwrap())
             .try_build()
             .unwrap();
         let v: Vec<u8> = v1.clone().into();
@@ -436,15 +421,12 @@ mod tests {
 
     #[test]
     fn test_v1_encoded_roundtrip() {
+        let mut hasher = mh::Builder::new(Codec::Sha3256).unwrap();
+        hasher.update(b"for great justice, move every zig!");
         let v1 = Builder::new(Codec::Cidv1)
             .with_target_codec(Codec::DagCbor)
             .with_base_encoding(Base::Base32Lower)
-            .with_hash(
-                &mh::Builder::new_from_bytes(Codec::Sha3256, b"for great justice, move every zig!")
-                    .unwrap()
-                    .try_build()
-                    .unwrap(),
-            )
+            .with_hash(&hasher.try_build().unwrap())
             .try_build_encoded()
             .unwrap();
         let s = v1.to_string();

src/lib.rs

@@ -29,10 +29,9 @@
 //! use multi_hash::Builder as MhBuilder;
 //!
 //! // Create a multihash
-//! let hash = MhBuilder::new_from_bytes(Codec::Sha2256, b"hello world")
-//!     .unwrap()
-//!     .try_build()
-//!     .unwrap();
+//! let mut hasher = MhBuilder::new(Codec::Sha2256).unwrap();
+//! hasher.update(b"hello world");
+//! let hash = hasher.try_build().unwrap();
 //!
 //! // Create a CID v1
 //! let cid = cid::Builder::new(Codec::Sha2256)
@@ -49,10 +48,9 @@
 //! use multi_codec::Codec;
 //! use multi_hash::Builder as MhBuilder;
 //!
-//! let hash = MhBuilder::new_from_bytes(Codec::Sha2256, b"data")
-//!     .unwrap()
-//!     .try_build()
-//!     .unwrap();
+//! let mut hasher = MhBuilder::new(Codec::Sha2256).unwrap();
+//! hasher.update(b"data");
+//! let hash = hasher.try_build().unwrap();
 //!
 //! let cid = cid::Builder::new(Codec::Sha2256)
 //!     .with_target_codec(Codec::DagCbor)
@@ -107,10 +105,9 @@ pub mod serde;
 /// use multi_cid::prelude::*;
 /// use multi_hash::Builder as MhBuilder;
 ///
-/// let hash = MhBuilder::new_from_bytes(Codec::Sha2256, b"test")
-///     .unwrap()
-///     .try_build()
-///     .unwrap();
+/// let mut hasher = MhBuilder::new(Codec::Sha2256).unwrap();
+/// hasher.update(b"test");
+/// let hash = hasher.try_build().unwrap();
 /// let cid = cid::Builder::new(Codec::Sha2256)
 ///     .with_target_codec(Codec::DagCbor)
 ///     .with_hash(&hash)