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Ruby Implementation of the FNV (Fowler-Noll-Vo) Non-Cryptographic Hash Algorithms

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Fnv::Hash

Pure Ruby implementation of the Fowler-Noll-Vo Hash Algorithms

Installation

Add this line to your application's Gemfile:

gem 'fnv-hash'

And then execute:

$ bundle

Or install it yourself as:

$ gem install fnv-hash

Usage

This gem supports geting both fnv-1 and fnv-1a hashes for an item. Each of these variations also supports both 32 and 64 bit versions.

# For FNV-1
hash = Fnv::Hash.fnv_1(item, size: 32)

hash_64 = Fnv::Hash.fnv_1(item, size: 64)

# For FNV-1a
hash = Fnv::Hash.fnv_1a(item, size: 32)

hash_64 = Fnv::Hash.fnv_1a(item, size: 64)

Development

After checking out the repo, run bin/setup to install dependencies. Then, run rake test to run the tests. You can also run bin/console for an interactive prompt that will allow you to experiment.

To install this gem onto your local machine, run bundle exec rake install. To release a new version, update the version number in version.rb, and then run bundle exec rake release, which will create a git tag for the version, push git commits and tags, and push the .gem file to rubygems.org.

Contributing

Bug reports and pull requests are welcome on GitHub at https://github.com/pawandubey/fnv-hash. This project is intended to be a safe, welcoming space for collaboration, and contributors are expected to adhere to the Contributor Covenant code of conduct.

License

Copyright 2017 Pawan Dubey

Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License.

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Ruby Implementation of the FNV (Fowler-Noll-Vo) Non-Cryptographic Hash Algorithms

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