Module: PaymobAccept::Hmac

Defined in:
lib/paymob_accept/hmac.rb

Constant Summary collapse

FILTERED_KEYS = 
%w[amount_cents created_at currency error_occured has_parent_transaction id
integration_id is_3d_secure is_auth is_capture is_refunded is_standalone_payment
is_voided order.id owner
pending source_data.pan source_data.sub_type source_data.type success].freeze

Class Method Summary collapse

Class Method Details

.validate(paymob_response:, hmac_key: PaymobAccept.configuration.hmac_key) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/paymob_accept/hmac.rb', line 9

def validate(paymob_response:, hmac_key: PaymobAccept.configuration.hmac_key)
  raise ArgumentError, 'hmac_key is required' if hmac_key.nil?

  digest = OpenSSL::Digest.new('sha512')
  concatenated_str = FILTERED_KEYS.map do |element|
    paymob_response.dig('obj', *element.split('.'))
  end.join
  secure_hash = OpenSSL::HMAC.hexdigest(digest, hmac_key, concatenated_str)
  secure_hash == paymob_response['hmac']
end