Abstract: A license access agent is configured to execute on a client computer. The license access agent comprises a license manager configured to receive a software license upon a request for authorizing usage of a protected software product so as to allow one or more functionalities of the protected software product to run on the client computer. The license manager is configured to disable the protected software product upon expiration of the software license unless the license manager obtains a refreshed software license.

Abstract: A key server is configured to execute on a computer. The key server is further configured to programmatically respond to a request by a sender by generating a message identifier connected with a message to be communicated and a random shared key for encrypting the message by the sender if the sender has registered with the key server. The key server is yet further configured to programmatically respond to a receiver by extracting the random shared key for decrypting the message if the receiver has registered with the key server, the receiver provides the message identifier to the key server, and the receiver is an intended recipient of the message.

Abstract: A license access agent is configured to execute on a client computer. The license access agent comprises a license manager configured to receive a software license upon a request for authorizing usage of a protected software product so as to allow one or more functionalities of the protected software product to run on the client computer. The license manager is configured to disable the protected software product upon expiration of the software license unless the license manager obtains a refreshed software license.