Method and apparatus for providing authorization to make multiple copies of copyright protected products purchased in an online commercial transaction

摘要: A method for selling a digital content product in an online commercial transaction including the steps of encoding product; creating file header having first information about and at least one corporate rate associated with authorization to make predetermined number copies upon purchase by buyer, encoded storing, as sale, host computer; providing access computer buyer so that has downloading displaying some together dialogue box subsequent selection via rate, establishing communication between broker accounts cost authorizes sending key use decrypting encrypted product.