BLAKE3

Blake3 using the official BLAKE3 c implementation.

Features

• Fast. ~2x faster than Sodium::Digest::Blake2b.
• Uses Crystal's Digest API.
• Keyed digests.
• Key derivation.
• Configurable final size.
• Streaming final output.
• Tested against official test vectors.
• Builds a blake3 c static library.

Speed

examples/blake3_hash.cr is approximately the same speed as b3sum with 1 thread or mmap disabled.

Installation

1. Add the dependency to your shard.yml:

   dependencies:
     blake3:
       github: didactic-drunk/blake3.cr

2. Run shards install

Usage

require "blake3"

digest = Digest::Blake3.new
digest.update data
p digest.final.hexstring

output_size = 1024
digest = Digest::Blake3.new(output_size)
digest.update data
p digest.final.hexstring => ...a.very.long.string...

digest = Digest::Blake3.new(key: "super secret exactly 32 byte key")
digest.update data
p digest.final.hexstring

For further API documentation see Crystal's Digest API

Contributing

1. Fork it (https://github.com/didactic-drunk/blake3/fork)
2. Install a formatting check git hook (ln -sf ../../scripts/git/pre-commit .git/hooks)
3. Create your feature branch (git checkout -b my-new-feature)
4. Commit your changes (git commit -am 'Add some feature')
5. Push to the branch (git push origin my-new-feature)
6. Create a new Pull Request

Contributors

• Didactic Drunk - creator and maintainer