multihash

chore: Release multihash version 0.19.5

Features

• embed minimal required core2/no_std_io2 traits (#411) (90fab31)
• Minimum supported Rust version (MSRV) is now 1.81, due to using core::error::Error.

chore: Release multihash version 0.19.4

Features

• implement digest:Update for all hashers (#405) (08f8410)

Bug Fixes

• replace core2 with no_std_io2 (#407) (af177c0)

chore: Release multihash version 0.19.3

Bug Fixes

• make alloc without std work (#377) (03f84e9), closes #375

• multihash 0.19.2
  • update unsigned-varint
• codetable 0.1.4
  • update strobe
• multihash-derive 0.9.1
  • update multihash-derive-impl
• multihash-derive-impl 0.9.1
  • remove proc-macro-error dependency
  • update synstructure
  • update syn to v2

Dependency Updates

• multihash 0.19.2
  • update unsigned-varint
• codetable 0.1.4
  • update strobe
• multihash-derive 0.9.1
  • update multihash-derive-impl
• multihash-derive-impl 0.9.1
  • remove proc-macro-error dependency
  • update synstructure
  • update syn to v2

Bug Fixes

• make Serde (de)serialization no_std compatible (#337) (7ad5161), closes #336. This was a regression introduced in v0.19.0.

⚠ BREAKING CHANGES

• the Serde serialization format changed
• split crates into multiple to isolate breaking changes
• identity hasher was removed

See the migration section below for help on upgrading.

Features

• codetable: remove identity hasher (#289) (8473e2f)
• Serde serialize Multihash in bytes representation (#302) (1023226)

Bug Fixes

• avoid possible panic in error handling code (#277) (5dc1dfa)
• don't panic on non minimal varints (#291) (6ef6040), closes #282
• expose MultihashDigest trait in codetable (#304) (50b43cd)

Code Refactoring

• split crates into multiple to isolate breaking changes (#272) (954e523)

Migrating

When upgrading to v0.19, consider the following:

• Code has moved from multihash::Code to multihash_codetable::Code. It's strongly recommended to define your own code table using multihash_derive. Check the custom codetable example on how to use it. For the simplest migration, use the multihash_codetable::Code.

  Before

  use multihash::{Code, MultihashDigest};
  
  fn main() {
      let hash = Code::Sha2_256.digest(b"hello, world!");
      println!("{:?}", hash);
  }
  

  After

  use multihash_codetable::{Code, MultihashDigest};
  
  fn main() {
      let hash = Code::Sha2_256.digest(b"hello, world!");
      println!("{:?}", hash);
  }
  

  If you get compile errors, make sure you have the correct features enabled. In this case it would be the sha2 and digest features.

• multihash::Multihash now requires the size of its internal buffer as a const-generic. You can migrate your existing code by defining the following type-alias:

  type Multihash = multihash::Multihash<64>;
  

• The identity hasher has been removed completely.

  Before

  use multihash::{Code, MultihashDigest};
  
  fn main() {
      let hash = Code::Identity.digest(b"hello, world!");
      println!("{:?}", hash);
  }
  

  After

  use multihash::Multihash;
  
  const IDENTITY_HASH_CODE: u64 = 0x00;
  
  fn main() {
      let hash = Multihash::<64>::wrap(IDENTITY_HASH_CODE, b"hello, world!").unwrap();
      println!("{:?}", hash);
  }
  

  Check the identity example for more information on how to replicate the functionality.

Bug Fixes

• don't panic on non minimal varints (#293) (c3445fc), closes #282

⚠ BREAKING CHANGES

• update to Rust edition 2021

• Multihash::write() returns bytes written

  Prior to this change it returned an empty tuple (), now it returns the bytes written.

Features

• add encoded_len and bytes written (#252) (b3cc43e)

Bug Fixes

• remove Nix support (#254) (ebf57dd), closes #247
• update to Rust edition 2021 (#255) (da53376)