Information processing system, information processing apparatus, information processing method, recording medium and programm

摘要

A CD-R(2) where a key generating program or the like is stored, and a USB memory(4) where a public key(6) is stored are delivered to a supplier(3) from a receiver(1). A common key(7) is generated by the supplier(3). Delivery data which is to be encrypted using the generated common key(7) and a common key(7) which is encrypted using the public key(6) are stored in the CD-R(2) by the supplier(3). The CD-R(2) and the USB memory(4) are delivered to the receiver(1) by the supplier(3). The encrypted common key(7) is decrypted by the receiver(1) using a private key(5). The encrypted delivery data is decrypted by the receiver(1) using the decrypted common key(7).