Hashit

Wrapper for Ruby's hashing functions

Add this line to your application's Gemfile:

gem 'hashit'

And then execute:

$ bundle

Or install it yourself as:

$ gem install hashit

Hashit supports the following hashing algorithms: md2, md4, md5, sha, sha1, sha224, sha256, sha384, sha512

For each of these there is the standard method and a timed method. Both accept a key and some text to hash, but the timed version will create a hash that is only valid for a certain amount of time

Hashit allows you to send an array of objects for both the key and data parameters when hashing. If an array is sent as the text field the values will be concatenated and then hashed. If an array is sent for the keys parameter (the first parameter) Hashit will hash your text once for each key, each time inputting the previous hash as the new text field

hash = Hashit.sha256("key", "some text")
timed_hash = Hashit.timed_sha256("key", "some text")

You can then validate those hashes using matches?:

if Hashit.matches?(hash, "key", "some text")
  # The data matches the hash
end

In the case of the timed hash you may want to check if it previously matched the data. In such a case you can use the did_match? function:

if Hashit.matches?(timed_hash, "key", "some text")
  # The data matches the current timed hash
elsif Hashit.did_match?(timed_hash, "key", "some text")
  # The data matched the previous timed hash
end

Hashing with an array as the text field is equivalent to:

#This"
Hashit.sha256("key", ["one", 45])

#Is equivalent to:
Hashit.sha256("key", "one45")

And an array instead of the key parameter:

Hashit.sha256(["key_1", "key_2"], "some text")

#Is equivalent to:
hash_1 = Hashit.sha256("key_1", "some text")
Hashit.sha256("key_2", hash_1[3..-1])

1. Fork it ( https://github.com/nitzanbl/hashit/fork )
2. Create your feature branch (git checkout -b my-new-feature)
3. Commit your changes (git commit -am 'Add some feature')
4. Push to the branch (git push origin my-new-feature)
5. Create a new Pull Request