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# Digest::SipHash

[![Build Status](https://travis-ci.org/ksss/digest-siphash.png)](https://travis-ci.org/ksss/digest-siphash)

Digest::SipHash is a class of message digest use algorithm SipHash.

## Usage

```ruby
require 'digest/siphash'

p Digest::SipHash.digest("siphash") #=> "\x59\xca\xae\xb9\x0d\x54\x24\x64"
p Digest::SipHash.hexdigest("siphash") #=> "59caaeb90d542464"
```

you can change seed string(128bits).
seed default value is `SipHash::DEFAULT_SEED` ("\x00" * 16)

```ruby
seed = (0..0x0f).to_a.pack("C16")
p Digest::SipHash.digest("siphash", seed) #=> "\x88\x27\x68\x57\x0d\xc7\x1c\x92"
p Digest::SipHash.hexdigest("siphash", seed) #=> "882768570dc71c92"
```

and other way. instance use.

```ruby
siphash = Digest::SipHash.new
siphash.update "siphash"
p siphash.digest #=> "\x88\x27\x68\x57\x0d\xc7\x1c\x92"

# of course, can change seed value.
siphash.seed = (0..0x0f).to_a.pack("C16")
p siphash.hexdigest "siphash" #=> "882768570dc71c92"
```

## Installation

Add this line to your application's Gemfile:

    gem 'digest-siphash'

And then execute:

    $ bundle

Or install it yourself as:

    $ gem install digest-siphash

## See also

[https://131002.net/siphash/](https://131002.net/siphash/)

Version data entries

1 entries across 1 versions & 1 rubygems

Version	Path
digest-siphash-0.0.1	README.md