Method: AuthorizeNet::SIM::Transaction#fingerprint

Defined in:
lib/authorize_net/sim/transaction.rb

#fingerprint ⇒ Object

Calculates and returns the HMAC-MD5 fingerprint needed to authenticate the transaction with the SIM gateway.



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# File 'lib/authorize_net/sim/transaction.rb', line 66

def fingerprint
  if @timestamp.nil?
    @timestamp = Time.now.to_i
  end
  
  if @sequence.nil?
    @sequence = rand(RANDOM_SEQUENCE_MAX)
  end
  OpenSSL::HMAC.hexdigest(@@digest, @api_transaction_key, "#{@api_login_id.to_s.rstrip}^#{@sequence.to_s.rstrip}^#{@timestamp.to_s.rstrip}^#{@amount.to_s.rstrip}^")
end