Portable device using a smart card to receive and decrypt digital data
US6779115B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 18, 2000 |
| Grant date | Aug 17, 2004 |
| Priority date | — |
| Expiry date | Feb 18, 2020 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F21/109
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A system and method for securely downloading digital music data includes a portable handheld device having a detachable smart card for decrypting encrypted music as it is played thereby allowing the portable device to receive and play encrypted music files. The smart card includes both a digital decryption key and hardware that decrypt the encrypted music using the key. The portable handheld device is configured to connect to a remote server, using the decryption key to establish a secure data communications channel, in order to receive the encrypted music files from the remote server. In an alternative system, a personal computer (PC) that is configured to connect to the smart card allows the PC to download and play the encrypted music. In another aspect of the system and method, the smart card provides the remote server with information that is used to pay for the downloaded digital music data. In one embodiment, the smart card has a stored monetary value that is read and modified by the remote server. Alternatively, data stored on the smart card, such as personal identification information, can be used to bill the end user for the digital data. In another embodiment of the inven…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.