The inventions relate to the delivery, transfer of content, and return of uniquely customized physical digital media. digital content is specifically encrypted for use on a target player associated with a specific customer account. After use, the media is returned to a receiving location where use information is read from the media. Attention is given to cost of delivery, security of content, user experience in selecting, choosing, paying for, viewing or utilizing the content, and usage information created as a result of the content being utilized, rented, purchased, loaded or deleted.
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0. 22. A method comprising:
storing a private encryption key in a first computing device, the private encryption key corresponding as a public-private key pair to a public encryption key;
encrypting, using a first content key, a digital content file;
encrypting, using the public encryption key, the first content key for use with the first computing device;
storing the encrypted digital content file and the encrypted first content key on a first portable medium, the first portable medium configured to be used with the first computing device; and
in response to detecting a compromise in security:
re-encrypting the digital content file with a second content key;
encrypting, using the public encryption key, the second content key;
storing the re-encrypted digital file and the encrypted second content key on a second portable medium; and
transmitting the second portable medium to the first computing device.
1. A method comprising:
storing a second public encryption key, corresponding as a public-private key pair to a first private encryption key, into a key vault;
storing the first private encryption key in a secure memory device in a player;
encrypting, using a first content key, a digital content file;
encrypting, using the second public encryption key, the first content key for use with the player;
storing resulting encrypted digital content comprising the encrypted digital content file and the encrypted first content key on a first portable medium, the first portable medium configured to be used with the player; and
transmitting the first portable medium to the player; and
in response to detecting a compromise of security:
re-encrypting the digital content file with a second content key;
encrypting, using the public encryption key, the second content key;
storing the re-encrypted digital file and the encrypted second content key on a second portable medium; and
transmitting the second portable medium to the player.
14. A portable cartridge, comprising:
a connector configured to couple to a player having a corresponding first private encryption key associated therewith; and
a storage device coupled to the connector, wherein the storage device is configured to store digital content including a digital content file and a content key, one or more parts of which have wherein the content key has been encrypted by a second public encryption key,
wherein the second public encryption key is associated with the first private encryption key as a respective public-private key pair, such that the digital content key is configured to be reproduced by the player,
wherein the digital content further includes a list of available digital content files and the digital content includes information for communication with a processor, a clock, and a timer, wherein the processor, the clock, and the timer reside in the player, and
wherein the processor, clock and timer are portable cartridge is configured to communicate with the portable cartridge processor, the clock, and the timer to reproduce digital content onto a local storage medium in the player.
0. 28. A method comprising:
storing a private encryption key in a media device, the private encryption key corresponding as a public-private key pair to a public encryption key;
receiving by the media device, from a first portable medium in communication with the media device, encrypted media content and an encrypted first content key, the encrypted first content key comprising a first content key having been encrypted using the public encryption key, and the encrypted media content having been encrypted using the first content key;
accessing, by the media device, the encrypted media content using the private encryption key and the first content key; and
in response to detection of a compromise of security:
receiving, by the media device from a second portable medium in communication with the media device, re-encrypted media content, the re-encrypted media content having been created by re-encrypting the media content with a second content key; and
receiving, by the media device from the second portable medium, an encrypted second content key, the encrypted second content key having been encrypted using the public encrypted key.
0. 34. A media device configured to receive encrypted media content, the media device comprising:
a storage device configured to store a private encryption key, the private encryption key corresponding as a public-private key pair to a public encryption key; and
at least one processor configured to:
receive, from a first portable medium in communication with the media device, encrypted media content and an encrypted first content key, the encrypted first content key comprising a first content key having been encrypted using the public encryption key, and the encrypted media content having been encrypted using the first content key;
access the encrypted media content using the private encryption key and the first content key; and
in response to detection of a compromise of security:
receive, from a second portable medium in communication with the media device, re-encrypted media content, the re-encrypted media content having been created by re-encrypting the media content with a second content key; and
receive, from the second portable medium, an encrypted second content key, the encrypted second content key having been encrypted using the public encryption key.
10. A method comprising:
sending a list of desired content desired to a content provider having access to a second public encryption key corresponding as a public-private key pair to a first private encryption key stored in a secure memory device in a player;
receiving in the player from a portable medium in communication with the player, an encrypted first content key and an encrypted digital content file comprising the desired content desired and an encrypted content key, the encrypted digital content file encrypted with the first content key for use with the player and the first content key encrypted with the second public encryption key;
copying the encrypted first content key and the encrypted digital content file from the portable medium to a local storage device in the player; and
playing the encrypted digital content file copied to the local storage device using the first private encryption key; and
in response to detection of a compromise of security:
receiving a re-encrypted digital content file, wherein the re-encrypted digital content file is created by re-encrypting the digital content file with a second content key, and wherein the encrypted digital content file in the local storage device in the player is replaced with the re-encrypted digital content file; and
receiving an encrypted second content key, wherein the encrypted second content key is encrypted using the public encryption key, and wherein the encrypted first content key in the local storage device in the player is replaced with the encrypted second content key.
2. The method according to
3. The method according to
4. The method according to
5. The method according to
0. 6. The method according to
re-encrypting digital content in response to detecting compromising of security; and
replacing the compromised digital content with re-encrypted digital content on the portable medium.
7. The method according to
updating encryption of the first portable medium that comprises a hard drive by block reading sectors of the hard drive into a memory module;
decrypting the encrypted digital content file and the encrypted first content key using an original encryption scheme utilized to originally encrypt the digital content file and the encrypted first content key;
re-encrypting the decrypted digital content file and the decrypted first content key using a new encryption scheme; and
storing the re-encrypted digital content file and the re-encrypted first content key to the hard drive.
8. The method according to
forming a secure flash processor, a clock storing correct Greenwich Mean Time (GMT), and a timer in the player at time of manufacture;
adjusting the time stored in the clock at the time the player is initialized; and
permitting reproduction, during predetermined time periods, of the encrypted digital content file and the encrypted first content key stored as data on the first portable medium.
9. The method according to
reading usage information of the encrypted digital content file from the first portable medium.
11. The method according to
storing usage information related to the playing of the encrypted digital content file on the portable medium.
12. The method according to
determining that the encrypted digital content file on the local storage device has been altered and is no longer playable.
13. The method according to
causing the player to generate a visual screen that permits selection of particular parts of digital content stored on the portable medium for transfer to the local storage device.
15. The portable cartridge of
16. The portable cartridge of claim 15 14, wherein the content key is generated using a broadcast-based encryption algorithm, the broadcast-based encryption algorithm utilizing a seed key to initialize an encryption process, wherein the seed key is discarded after the encryption process is initialized, and wherein further keys are generated utilizing a secret decryption algorithm known to the player.
17. The portable cartridge of
18. The portable cartridge of
19. The portable cartridge of
a processor onboard the storage device and configured to communicate with the player, such that the player is authorized to receive the digital content using an encrypted tunnel.
20. The portable cartridge of
an authentication file authorizing the player to receive the digital content, ship-to information, return address information, advertising materials, a help file, and a digital content file; and
digital rights associated with the digital content file, such that the digital content file is available when authorized by the digital rights being one or more of rules for digital content file usage, number of days per rental, specific times and dates for usage of the digital content file, pricing information and payment options.
0. 21. The method of claim 1, wherein the second portable medium is different from the first portable medium.
0. 23. The method according to claim 22, further comprising:
storing a second private encryption key in a second computing device, the second private encryption key corresponding as a public-private key pair to a second public encryption key;
encrypting, using the second public encryption key, the first content key to obtain a second encrypted first content key for use with the second computing device; and
storing the second encrypted first content key on the first portable medium.
0. 24. The method according to claim 22, further comprising:
reading usage information of the encrypted digital content file from the first portable medium, the usage information having been uploaded on the first portable medium by the first computing device.
0. 25. The method according to claim 22, further comprising:
reading a list of desired content from the first portable medium, the list of desired content having been uploaded on the first portable medium by the first computing device; and
selecting the digital content file before encryption based on the list of desired content.
0. 26. The method according to claim 22, wherein the first portable medium includes one or more processors, a clock storing correct Greenwich Mean Time (GMT), and a timer; and
the method further comprising:
storing information on a time zone of the first computing device on the first portable medium, the information to be used for updating the first computing device according to the clock and the timer of the first portable medium.
0. 27. The method of claim 22, wherein the second portable medium is different from the first portable medium.
0. 29. The method according to claim 28, wherein the accessing of the encrypted media content comprises:
decrypting the encrypted first content key using the private encryption key to obtain the first content key; and
decrypting the encrypted media content using the first content key to obtain decrypted media content.
0. 30. The method according to claim 28, wherein the accessing of the encrypted media content comprises downloading, by the media device, the encrypted media content from the first portable medium.
0. 31. The method according to claim 30, further comprising deleting, hiding, or scrambling the encrypted media content and the encrypted content key from the first portable medium after the downloading of the encrypted media content.
0. 32. The method according to claim 30, further comprising encrypting, by the media device, the encrypted media content using an additional encryption key when the downloading of the encrypted media content is performed.
0. 33. The method of claim 28, wherein the second portable medium is different from the first portable medium.
0. 35. The media device of claim 34, wherein the at least one processor accesses the encrypted media content by:
decrypting the first encrypted content key using the private encryption key to obtain the first content key; and
decrypting the encrypted media content using the first content key to obtain decrypted media content.
0. 36. The media device of claim 34, wherein the at least one processor accesses the encrypted media content by downloading the encrypted media content from the first portable medium.
0. 37. The media device of claim 36, wherein the at least one processor is further configured to delete, hide, or scramble the encrypted media content and the encrypted first content key on the first portable medium after downloading of the encrypted media content.
0. 38. The media device of claim 36, wherein the at least one processor is further configured to encrypt the encrypted media content using an additional encryption key while downloading the encrypted media content from the first portable medium.
0. 39. The media device of claim 34, wherein the second portable medium is different from the first portable medium.
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This application is a continuation of U.S. patent application Ser. No. 11/709,704, filed Feb. 23, 2007, now U.S. Pat. No. 8,296,583, which claims the benefit of U.S. Provisional Application No. 60/776,776, filed Feb. 24, 2006.
The inventions described and claimed herein relate to the delivery, transfer of content, and subsequent return of uniquely customized physical digital media (for example, CD, DVD, flash card, memory stick, optical, hard disk) referred to as “portable cartridge” or “hard drive” or “cartridge” via physical delivery (e.g. via mail, courier, customer pickup location, air, bus, transit, hand delivery, retail or outlet location, package drop, or other means to deliver a physical good) of a digital media that comprises one or more types of content. Digital content (files, movies, games, index information, movie trailers, pricing information, advertisements, pictures, audio samples, program executable code, algorithms) can be delivered to a user with a player (set-top box, computer, mobile, TV, stereo), herein referred to as “player”, and made available for program updates, purchases or rent via a uniquely customized physical medium (for example, CD, DVD, flash card, memory stick, optical, hard disk) by way of physical delivery (for example, via mail, courier, customer pickup location, air, bus, transit, hand delivery, retail or outlet location, package drop, or other means to deliver a physical object). Care is given to the cost of delivery, the security of content itself, the user experience in selecting, choosing, paying for, viewing or utilizing the content, and the resulting usage information created as a result of the content being utilized, rented, purchased, loaded or deleted.
Existing methods of digital media content delivery are organized into two primary categories: 1) Physical delivery (mail, courier, customer pickup location, air, bus, transit, hand delivery, retail or outlet location, package drop, or other means to deliver a physical good), and 2) Digital transmission types of delivery (telephone, wireless, wire-line, Internet, satellite, TV broadcast, radio, and other communication methods).
The film industry typically makes a distinction between these two types of delivery methods and will many times differentiate content availability based on the delivery method chosen. Each delivery method has its own security requirements for different types of content and different content sensitivities.
This patent document relates in part to the means to provide a secure and efficient/economical physical delivery system for digital content (e.g. CD, DVD, flash card, memory stick, optical, hard disk).
Physical delivery of digital media has been provided for many years in many forms both secured and un-secured. In the area of secured physical distribution, many existing methods are used to secure content for mass audience consumption. These include encryption schemes that are tied to secrets that are locked inside a particular manufacturer's player as is the case for DVD's, to content keys that are used to unlock software for installation on personal computers.
These methods of protecting content are well known to anyone skilled in the art of content protection schemes.
Updated content protection schemes such as those being developed for high definition (HD) formats (e.g. HD-DVD and Blu-Ray) include higher bit keys and methods to update the encryption schemes on player devices for content that is cracked. These new methods add additional levels of obfuscation than that used by the current methods for DVD encryption. The new abilities to update encryption schemes and keys for cracked content will not provide security for the current cracked content, but merely provide an updated scheme or key for all new content that is physically delivered. So while these new schemes for HD content have increased security, they do not enable all existing content shipped or bought by customers to be updated; only the new content is updated. Additionally these methods for encryption can not effectively tether content to a specific unique player because of the very nature of mass market production. Instead the content is encrypted in such a way with keys that are secret, but that are distributed by a manufacturer. So you have many manufacturers who have their own sets of keys that can be used to unlock the content. The content by definition has many hashed keys that exist in many different manufactured player devices, all of which can be used to unlock the same content.
In the non-physical delivery methods, content keys can be uniquely encrypted for a single device at distribution time because the content is broadcast or downloaded electronically and can be digitally signed as needed to protect the content. In these types of methods, which are also well known to anyone skilled in the art of encryption, content can be successfully tethered to a single device so that there is only one key/player that can play back the content.
The inventions described herein are directed to overcoming current obstacles and creating new ways to improve the delivery, transfer of content, and subsequent return of uniquely customized physical digital media (for example, CD, DVD, flash card, memory stick, optical, hard disk) via physical delivery (for example, via mail, courier, customer pickup location, air, bus, transit hand delivery, retail or outlet location, package drop, or other means to deliver a physical good) of a digital media that comprises one or more types of content.
Physical digital media delivery arrangements described herein deliver a uniquely customized digital media (for example, CD, DVD, flash card, memory stick, optical, hard disk) to a user that can be docked or placed into a player which then updates the player with the unique/personalized content and the player updates the physical media with user information comprising billing data, usage information, and other collected history. Once content has been updated to and from the digital media, the media is returned to a centralized or regional location for further processing.
While the inventions will be described more fully hereinafter with reference to the accompanying drawings, in which aspects of the preferred manner of practicing the present invention are shown, it is to be understood at the outset of the description which follows, that persons of skill in the appropriate arts may modify the invention herein described while still achieving the favorable results of this invention. Accordingly, the description which follows is to be understood as being a broad, teaching disclosure directed to persons of skill in the appropriate arts, and not as limiting upon the present invention.
The inventions provide a physical digital media delivery system that delivers a uniquely customized digital physical media 120 (for example, CD, DVD, flash card, memory stick, optical, hard disk) to a user that can be docked or placed into a player 122 which then updates the player with the unique/personalized content. Physical media 120 has stored therein a specific encryption key(s) for a particular target player such as player 122 shown in
When the physical media 120 is played, the player 122 updates the physical media 120 with user information comprising billing data, usage information, and other collected history. Physical media 124 shown in
The specifics of key encryption are not described herein. Well known key encryption algorithms can be used in these inventions. The inventions described herein do not relate to these specific algorithms, but rather to how they are utilized in arrangements including systems and methods for providing secure digital media. It should be understood that one skilled in the art of encryption could implement the details of the key encoding/encryption processes.
As shown in
After manufacture of a secure ROM or secure flash 210 and after its key information has been downloaded into key database 214, it is installed into player 1, indicated generally by reference numeral 220. Similarly, after manufacture of another secure ROM or secure flash 226 and after download of its key information into key database 214, it is installed into player 2, indicated generally by reference numeral 222. Thus, player 1 and player 2 have unique private keys built into them.
During preparation of physical media 120, selected keys for selected content are uniquely encrypted/tethered to a specific player such as player 1. The same physical media 120 can also have stored therein selected keys for selected content stored in a second file for a second player such as player 2 at the same delivery address. Thus, one physical media can become played by two or more players at a particular location. For example, a family might have multiple players (living room, bedroom, etc.) and be able to play the content on any one of its subscribed players.
Content that is desired to be accessed by a user that also must be secured and provided to the user in an easy to use fashion first begins with an encrypting process such as shown in
Keys for the encrypted content are stored in a key vault such as key vault 116 shown in
Once content has been encrypted, the content and the keys are stored in separate databases and/or separate locations (116 and 118) for security purposes as shown in
Players, such as player 122 (
The processing location also has access to a set of public keys that are specifically tied to the private keys stored on the players (
The request for information can also include specific content format information. For example, a movie title might be requested in high definition, but also requested in standard definition and a lower resolution that will be utilized on a smaller screen or portable player.
As shown in
The physical media can also be loaded with an “Authentication” file that is utilized by the player to ensure the cartridge is encoded specifically to a specific player.
As an alternative, the keys can be encrypted utilizing additional sets of public keys for additional players that reside at the same physical ship-to address. In this embodiment, the portable physical cartridge can be plugged into multiple players (
As another alternative, the portable physical cartridge can be plugged into only one device and the multiple players communicate wirelessly to send and receive the requested content.
The process of building mass quantities of customized hard drives involves a vast array of high speed storage and replicated distributed data built into a network that is capable of delivering aggregate speeds in excess of 100 Gigabits per second. One such file system operating at these speeds is the IBM General Parallel File System (GFPS), which has been engineered for supercomputing projects. In one embodiment, this file system or other high speed file system is utilized by developing a special portable cartridge node that is suited to drive data movement instead of supercomputing (CPU intensive) applications. Each node which is connected to the high speed file system via a high speed non-blocking switch, comprises processors and drive bays required to hold a plurality of portable cartridges.
When the portable physical media cartridge is stored with the requested content, it is physically shipped to the location that requested the content based on known user address information on file (
Upon receipt of the portable physical cartridge, the user connects or plugs in the cartridge to their one or more players. In one embodiment, the cartridge utilizes standard connectors to attach to the player. In another embodiment, a proprietary connector is utilized to support additional functions such as time and date features from an onboard clock and/or to reduce the ability of users to accidentally or intentionally attempt to connect the cartridge to a personal computer or other standardized plug. Reference numeral 728 refers generally to whatever connector is chosen to connect cartridge 710 with a similar connector 728 associated with player 122. Connectors 728 exchange data relating to secure authentication, clock timer and data updates as represented by signal lines 730.
Once the cartridge 710 is physically connected, the player 122 accesses the information on the cartridge 710. In one embodiment the player utilizes private keys to attempt to decode the “Authorization” file to ensure the contents of the cartridge can be accessed. In another embodiment, the secure processor 712 embedded with the cartridge 710 sets up an encrypted tunnel to the player 122 to a secure processor 724 on the player. Secure processor 724 can be, for example, a TI MSP430. It also has associated with it clock timers 750 and a battery 752. Processors 712 and 724 negotiate a secure channel for the transfer of key data. Once the cartridge and the player have been authenticated, the transfer of data and information begins. Keys for content are stored in the player in their uniquely tethered/encrypted state and are therefore only accessible to the target player 122. Content is copied to the player in its original encrypted state as well. Player 122 includes a player hard drive 732 for storing data read from cartridge 710. Hard drive 732 interfaces through an ATA, SATA, SCSI serial bus connector 742, or the like.
Key database 116 at a regional or central location is used to ensure the time, date and time zone updates can be applied only to the specific player or players targeted for a particular transaction.
In another embodiment the encrypted material is encrypted a second time (
As content is being written from the portable cartridge 710 to player 122, care is taken to ensure that wanted content currently on player 122 is not erased. If cartridge 710 contains more content than the player has space for, the transfer will overwrite titles that have already been seen and have past their viewing period. Next titles which have not been seen will be overwritten or a prompt is provided to the user to approve the change. Titles under current viewing windows require a user to approve the overwriting. In another embodiment a simple title list (
According to one embodiment, once the contents of both the portable cartridge and the player have been successfully transferred and/or updated, the original secure key content and/or the content itself on the portable cartridge is erased, hidden, removed, garbled, or otherwise rendered useless. This is done to further protect the content information from any unauthorized access. When completed, the user places the portable cartridge into a pre-addressed shipping envelope and drops it in the mail. When the cartridge is received at a central or regional location, the drive is opened and connected to a read/transfer system that pulls and extracts the required billing and other information into a central or regional system for further processing. During billing reconciliation, users' rentals and purchases are tallied and sent to a billing system. Key elements of billing such as owned titles or rent to own plans are tallied and kept up to date so that users are not charged for titles they own, and running totals are kept for users who are in the process of renting to own. It should be noted here that ownership in a title may be a virtual ownership, and the user effectively has purchased an unlimited viewing right to the title. Users also may be on a plan that gives them a certain number of rentals each month, and in these cases, the rentals up to that amount are not charged individually because they fall within the user's rental limit.
In the event a user has a system that requires service or their system is broken, the entire library of the user can be recreated for them. In this case, the central or regional location has a list of the current content that is both resident on the player and a list of all archived content. With this information, a substitute player can be rebuilt and populated with content and keys for a replacement. It should be noted that during a replacement the user's information in the central or regional location is updated with the new specific replacement player information. This is done to ensure that the new player and the new portable cartridges will match up in subsequent mailings.
Users have an option to archive (
In addition to content being securely copied from the portable cartridge to the player, selected information is copied from the player to the portable cartridge (
During the process of transferring data, users are greeted with a screen that delivers informative updates on the progress and steps that are being taken. Users can pick and choose various activities during the update process including viewing advertising, reading about upcoming attractions or titles, picking their next set of content they wish to receive, looking up help for a problem, or other associated activities. During the process users must pick the titles of information they wish to receive in the next delivery of the portable disc, or in one embodiment the user has available an option to delay the receipt of a portable cartridge for some period of time while on vacation or for other reasons.
Referring again to
In one embodiment, the player has a docking device for portable player(s). Typically these portable devices have smaller screens and therefore require lower quality video content. To meet these requirements, users have the ability to select different content formats for different portable devices. This content is delivered in the same way as other content (on the portable cartridge) and stored on the player's drive, or archived by the user. Once stored, the user connects the portable device into the docking port and is then greeted with a content-move menu that prompts the user and assists them in securely moving the content to the other platform. Solutions exist today for this type of secure content movement, which will not be detailed in this document. It should also be noted that portable optical players may also be attached that are capable of playing back the archive discs. In this case, the player is attached and the keys required to play the content are securely transferred to the portable device along with the associated rights for unlimited play, view x times, view y amount of time, etc.
In certain hardware devices, secrets are burned or stored into chips. These secrets are typically encrypted, but no matter how advanced the encryption, eventually there must be a secret that is stored which is not encrypted—especially in the case where a specific piece of hardware requires a unique individualized identity. While information can be stored securely a number of different ways, there still usually exists a brute force method of pulling or probing content from a piece of hardware including cutting off chip covers and probing circuits to identify protected contents.
This feature provides a secure lock box for hardware where existing, tension based alarm circuits are applied to a number of chips containing important secret information. To accomplish this, the chips to be protected are designed and built into a circuit board, which can communicate via an external bus or connector 1218 to the rest of the system. This board is then encased in a box 1210 that utilizes existing tension based alarm technology including alarm 1214 and is locked down. If the alarm is tripped by someone or something attempting to open it, or access the content, then the alarm is tripped and key secured contents stored on secure flash or secure ROM 1220 are erased or otherwise rendered useless. The alarm system should advantageously employ an electronic alarm that can be passed to a security program executed by a battery 1224 operated processor 1222 inside the lock box, which erases or makes secret content unusable. Processor 1222 executes a security program that causes the secret content to be erased. The arrangement includes a switch system that enables the lock box to be locked down without tripping the alarm, and then after some period of time, reverts to the tamper state. This is important because the alarm will trip during initial installation, but the contents should not be erased at this stage. Then once the lock box is secured, the contents can then be under control of the alarm tripping mechanism. The system includes the ability to program a clock/date timer 1230 to set a time duration needed before the alarm is set. Chargeable batteries 1224 keep the alarm and processor working even if removed from the hardware device. A battery check can be provided to automatically trip alarm 1214 and erases the contents in the lock box when battery power begins to fade. Thus, if the lock box is removed and kept on a shelf for 1 year with no battery charge applied, the contents would be erased near the end of battery life and a suspect hacker upon waiting a year would still find the contents gone upon opening up the lock box. Besides tension conditions, if a hacker attempts to carefully drill through a bus mounting, certain wire crosses or cut wires may also trip the alarm and erase contents.
Sparks, Kelly C., Gust, David A.
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