ES2358697A1 - An anticopy system for solid memories flash type. (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

An anti-copy system for solid flash-type memories, with encrypted content, with the peculiarity of having on its back, at least one smartcard or sim-type cryptographic card, in which it contains the decoding keys of the memory content, which by means of of the decoder reader makes its content accessible in order to reproduce it if it is a multimedia or audiovisual product or its installation is authorized if it is software. (Machine-translation by Google Translate, not legally binding)

Description

A copy system for solid memories type flash.

Technical sector

This invention falls within the sector of the technical of the computer industry, multimedia, audiovisual, and the industry of flash memory manufacturers.

State of the art

Copy protection, also known as copy prevention, is a technical measure designed to prevent duplication of information Copy methods are used to protect the content of a certain medium such as a CD, DVD, BLU-RAY etc. of duplication. Between some methods can be found: add a second data track, modify the table of contents, add corrupt files and Include bad sectors. No copy method is 100% effective, but prevents inexperienced users from copying the content. In some countries the laws allow you to have a copy of I guard, but these methods hinder this possibility.

This patent application is intended to suggest and help the audiovisual, multimedia and computer industry in the transition of optical media (CD, DVD, BLU-RAY) towards flash memories, since these can provide the characteristics of being able to add a system of very secure and stable encryption and decryption, characterized for being able to implant a smart card (SmartCard or SIM), or card with integrated circuit that allow the execution of certain programmed logic.

Cryptographic smart cards are Advanced microprocessed cards with hardware modules for the execution of algorithms used in encryption and signatures digital In these cards you can safely store a digital certificate and sign documents or authenticate with the card without the certificate leaving the card, since it is the processor of the card itself that makes the signature. An example of these cards are those issued by the National Currency Factory and Spanish Doorbell and those used by pay-per-view issuers broadcast by satellite or cable, with several properties special and is able to provide security services (eg System Encryption Nagra3, Seca3, Viaccess, Conax, Videoguard, etc.).

The flash memory consists of a small card intended to store large amounts of information in a Very small space. It is usually possible to find them by saving the photos of a digital camera, the street programs and routes of a GPS, the contact directory of a cell phone or files of computer.

These types of cards are called no volatile, since they retain the data even when they are not found connected to the electric current. The advantages of this type of Memory on CDs and DVDs are countless. In the beginning you are cards allow you to quickly add and remove files without having than burn a new disc. In addition to not containing moving parts (like the mechanism that turns CDs and DVDs) do not consume So much energy and they are much faster. They also offer features such as high shock resistance, low consumption and It is very quiet, since it contains neither mechanical actuators nor Mobile parts. Its small size is also a determining factor when choosing for a portable device, as well as your lightness and versatility for all uses to which it is oriented.

There are several formats for flash memory: Compact Flash (CF) I and II, Memory Stick (MS), Micro SD, Mini SD, Multi Media Card (MMC),
Secure Digital (SD), SmartMedia Card (SM / SMC), xD-Picture card.

Not so long ago, it seemed almost impossible store huge amounts of information in a small space. However, day by day, we see how flash memories increase very much its capacity, almost leaving aside the classic albums optical media, such as CD-ROMs, DVDs, BLU-RAY.

Detailed description of the invention

The mode of operation of this system anticopy, is to decode the content of the memories in a coded system, such as those used by pay per view platforms, just like a decoder receiver of satellite or cable television channels. There are currently encryption and coding systems for television signals, such as so-called encryption systems NAGRA3, SECA3, VIDEOGURD, VIACCESS, CONAX, etc.

Additionally, memory should be implanted flash of a smart card (SmartCard), or card with circuit integrated (SIM) that allow the execution of certain logic scheduled, with the mission of decoding the encrypted content of the flash memory and be able to extract the data it contains, for example, install a computer software, watch a video movie, play music, install a video game, etc.

On the other hand, there is the hardware system of the flash memory reader, which should be compatible to be able to play these flash memories with copy protection with data encrypted, incorporating a reader to decrypt the content using the SmartCard or SIM that you would incorporate on your reverse and act as well as decoder as well as flash memory reader.

The operation would be analogous to the system of pay per view, where from time to time the coded system asks information to the SmartCard or SIM to be able to decrypt the data and be able to reproduce them and enjoy their content.

In the figure: 1 a diagram of operation of this copy system, where the content of the flash memory is encrypted and is read by the player, where upon encountering the encoded content, the decoder, which asks for decryption data to the card cryptographic (SmartCard or SIM), where once the data is collected of decryption, the content is authorized to be able to play it if it is multimedia or audiovisual, or is authorized for installation if it is a software.

This copy system could be very useful for the fact that if your coding system is open, only would be affected a work of a product producer multimedia, audiovisual or software, but it would not be affected other works (Musical Album, Movie film, Software, etc.).

Description of the drawings

In figure 1: we can see a graph of operation of this copy system, where flash memory it has its encrypted content, and when accessing the reader to play it, find your encrypted data and turn to decoder, which in turn accesses the cryptographic card (SmartCard or SIM) where you find the keys to decode them and Be able to play your content.

Exhibition of an embodiment

An embodiment of this system copy, is to record the content of solid memory type flash, whether multimedia, audiovisual, or computer content, in Encrypted format similar to the current Nagra3, Seca3, Conax, Viaccess, etc. And provide the decryption keys, to the cryptographic card (SmartCard or SIM) that would have said memory flash on the back, and with the help of the decoder player, be able to decrypt the content recorded in flash memory when they are required by the encrypted system, which could be 128 bytes or as standardized and normative agreed.

For example, the encrypted content of the flash memories, depending on the coding system used, would require a decryption key every time interval, which would be recorded on the cryptographic card (SmartCard or SIM), that through the decoder inserted in the player, the would read and decouple the content that would translate it according to the medium, whether audio, video, multimedia, or computer data.

It becomes necessary for this copy system, of a receiver that at the same time is a card decoder cryptographic, integrated into the electronic device of the solid flash type player or reader.

Indication of industrial application

This invention has industrial application in the sector of the audiovisual, computer, multimedia and industry of flash memory manufacturers.

Claims (1)

1. An anti-copy system for solid flash memory, with encoded content, characterized by having inserted at least one SmartCard or SIM type cryptographic card on its back, which would contain the information necessary for subsequent decoding by means of the player reader.