Methods and systems for authorizing and deauthorizing a computer license

摘要

A system and method of deauthorizing a computer-based licensed product. During the deauthorization process, an end user device transmits an encrypted character string (i.e., the Proof Of Removal Code), including a Transaction ID, to a licensing authority. The licensing authority receives the Proof Of Removal Code from the end user device and decrypts the Transaction ID using a decryption key associated with a product for which the end user is seeking deauthorization. The licensing authority compares Transaction IDs and produces a Deauthorization number, which is sent to the end user device. Each product is associated with a different decryption key resulting in a different Deauthorization number being produced for each product based on the same Transaction ID. Thus, the same identical Transaction ID can be decrypted into as many different Deauthorization numbers as there are products.