Class: Prodamus::Verifier

Inherits:
Object
  • Object
show all
Defined in:
lib/services/verifier.rb

Overview

HMAC encoding and verify signature

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(data, key, algorithm = 'sha256') ⇒ Verifier 



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# File 'lib/services/verifier.rb', line 10

def initialize(data, key, algorithm = 'sha256')
  @data = data
  @key = key
  @algorithm = algorithm
end

Instance Attribute Details

#algorithm ⇒ Object

Returns the value of attribute algorithm.



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# File 'lib/services/verifier.rb', line 8

def algorithm
  @algorithm
end

#data ⇒ Object

Returns the value of attribute data.



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# File 'lib/services/verifier.rb', line 8

def data
  @data
end

#key ⇒ Object

Returns the value of attribute key.



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# File 'lib/services/verifier.rb', line 8

def key
  @key
end

Instance Method Details

#encode ⇒ Object 



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# File 'lib/services/verifier.rb', line 21

def encode
  data = sort(@data).to_json
  digest = OpenSSL::Digest.new(@algorithm)

  OpenSSL::HMAC.hexdigest(digest, @key, data)
rescue NoMethodError
  raise ArgumentError, 'Expected a Hash with array of hashes.'
end

#verify(sign) ⇒ Object 



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# File 'lib/services/verifier.rb', line 16

def verify(sign)
  encoded_data = encode
  encoded_data && (encoded_data == sign)
end