Abstract: A storage device and method for dynamic content tracing are provided. In one embodiment, a storage device stores content having a plurality of sequences of data, each sequence of data having original data and at least one variation of the original data. The storage device receives an identifier of a host device and, for each sequence of data, selects either the original data or one of the at least one variation of the original data based on the identifier of the host device. The storage device then assembles a version of the content from the selections and provides the assembled version of the content to the host device. The assembled version of the content is unique to the host device and therefore can be used to trace the assembled version of the content back to the host device.

Abstract: A method for securing a plaintext object within a content receiver is described. In one step, a secure portion of a secure object and a plaintext remainder of the secure object are received. Which portion of the secure object is the secure portion is determined. The secure portion is decrypted to provide a plaintext portion. The plaintext object that comprises the plaintext portion and the plaintext remainder is formed. The plaintext object is stored including authentication and authorization.

Abstract: Embodiments include a method, a computing device, and a computer program product. An embodiment provides a method that includes receiving an instruction operable to create a visual presentation corresponding to a bitmap content. The method also includes determining if the instruction operable to create a visual presentation corresponding to a bitmap content includes an instruction operable to create a visual presentation corresponding to a bitmap content having an indicium of a digital watermark. The method further includes initiating an action with respect to the instruction operable to create a visual presentation corresponding to a bitmap content, the action being responsive to the determining.

Abstract: The present invention is suitable for use in a multi-encrypted system that dynamically allocates stream identifiers in a second stream depending upon the identifiers in a first stream. The first stream is monitored and counters are incremented with the presence of an identifier. The count for each of the counters is then received. Using the count, a control processor then assigns or revises identifiers in the second stream.

Abstract: An image commercial transactions system and method, an image transfersystem and method, an image distribution system and method, and a display device and method are disclosed. A reception dealer accepts the transfer of an image recorded on a recording medium in a predetermined format with a handling condition intrinsic to the image, and transfers the image with the handling condition, and an advertisement, in digital data format, and a charge accounting dealer effects an electronic charge accounting transaction for the transfer of data of the image with the handling condition and the advertisement. Accordingly, a forwarding request user is helpful in making public the advertisement by having the data of the advertisement along with the data of the image forwarded, instead of the reception dealer, whereby a transfer fee for the data of image can be made lower. Consequently, it is possible to enhance the usability for the transfer significantly.

Abstract: An information processing apparatus, an information recording medium, an information processing method, and a computer program are provided. In an information recording medium storing many pieces of content, a configuration that allows use management on segmented content basis is provided. A plurality of content management units corresponding to title, index and other information are set by partitioning stored content in an information recording medium. Different unit keys that are encryption keys are allocated to different content management units. At least the content real data included in each content management unit is encrypted by use of the unit key and the encrypted data is stored. In content reproduction, units are identified and decryption is executed by use of a unit key corresponding to each unit for reproduction. In an information recording medium storing many pieces of content for example, each of segmented pieces of content may be managed.

Abstract: A method for controlling a digital television (DTV) includes receiving independent space identification information recorded in a storage area of a compact wireless device and a wired equivalent privacy (WEP) key value of an access point (AP) card, receiving the WEP key value corresponding to the AP card of the DTV from a management server, and comparing the WEP key value received from the compact wireless device with the WEP key value received from the management server. If the WEP key values are identical to each other, receiving first checklist information associated with the use of the independent space from the management server, displaying the received first checklist information, and transmitting second checklist information, in which one or more elements of the displayed first checklist information is marked, to the management server.

Abstract: A digital media with encoded audio-visual content includes an encoded token. The token comprises visual data having defined characteristics, which are designed such that when the audio-visual content is output as analog output and then re-recorded as digital data, the resulting digital data includes an altered token. Digital data may be processed to detect altered tokens indicating that the data was recorded from an analog output. When an altered token is detected, the copy may be considered to be an unauthorized copy and handled accordingly.

Abstract: A digital watermark embedding apparatus includes: an extractor configured to extract a specific frequency component from each of N kinds of scaled images about an input image signal to generate N kinds of extracted signals; a generator configured to compress the amplitude of the respective extracted signals on the basis of N kinds of to-be-embedded information corresponding to the N kinds of extracted signals to generate watermark image signals by shifting the predetermined phases; and a superimposer configured to add the N kinds of watermark image signals to the input image signal to generate an output image signal.

Abstract: A system and apparatus for evaluating the reliability of a watermarking technique for a video sequence, said system and apparatus comprising: a) a calibrating means adapted to calibrate said system and apparatus using a test original video sequence and a test attacked video sequence in compliance with predetermined degrees of quality; b) an attacking means adapted to attack embedded watermark in said video sequence, said attack selected from a group of attacks; and c) an evaluating means including a comparator means for comparing the test original video sequence with test attacked video sequence and the watermark in the test original video sequence with the watermark in the test attacked video sequence to evaluate the reliability of a watermarking technique to give a reliability score.

Abstract: A method of managing keys is provided. According to one exemplary method, digital content data encrypted with a first encrypting key is decrypted using a first decrypting key, and re-encrypted using a second encrypting key. A second decrypting key is encrypted using a third encrypting key to produce an encrypted second decrypting key. In some embodiments, an encrypted first decrypting key that was encrypted using a fourth encrypting key is received, and the encrypted first decrypting key is decrypted using a fourth decrypting key to reproduce the first decrypting key. An application for use on a computer system is also provided.

Abstract: A computerized intellectual property trading exchange is disclosed for facilitating the trading of license contracts relating to intellectual property rights or pools of intellectual property rights. The exchange includes at least one intellectual property license contract relating to intellectual property rights or pools of intellectual property rights and a computer-accessible forum configured to allow a plurality of participants to trade the license contract. The plurality of participants includes at least one seller, which may be the owner, having the license contract and desiring to trade the license contract. The plurality of participants also includes at least one buyer desiring to obtain the license contract. The buyer may be an investor, speculator, market maker, or arbitrageur, who purchases the license contract to achieve appreciation. The buyer also may be a licensee, who purchases the license contract to practice the intellectual property rights.

Abstract: Watermark information (denoted WM) consists of several symbols which are embedded continuously by reference sequence modulation in an audio or a video signal. At decoder site the WM is regained using correlation of the received signal with a corresponding reference sequence. The symbols form watermark data frames. The invention uses for the bit values ‘zero’ and ‘one’ in each payload symbol and for each payload symbol in a watermark data frame different reference sequences, without using synchronisation symbols. A logarithmic search is performed in the WM decoder to reduce the numbers of correlations to be calculated. The invention makes watermarking of critical sound signals much more robust.

Abstract: A content transfer control system for a wireless device and a method of controlling content transfer from a wireless device are described. The system includes a content transfer control component arranged to (a) detect licensed content and (b) transfer a content source indicating a source of the licensed content responsive to detection of licensed content. The method includes transmitting content from the wireless device if the content is not determined to be licensed content and transmitting a content source from the wireless device if the content is determined to be licensed content.

Abstract: A content transmission apparatus is disclosed which promotes distribution of contents over a network and thereby affords better convenience to those who wish to sell and buy the contents. The apparatus is implemented typically as a video camera provided beforehand with an access account from a server apparatus. The content transmission apparatus is equipped with abilities to encode contents in a streaming format for upload and to connect communicably with the server receiving what is uploaded. These features allow the user of the content transmission apparatus easily to upload the content generated thereby to the server without going through complicated steps to sign up with an ISP; to prepare a personal computer, a modem and other hardware; or to make elaborate settings and establish connection with the server. Therefore, uploading of contents is promoted. The server apparatus presents uploaded contents illustratively at its website to solicit potential buyers extensively for the presented contents.

Abstract: Authentication information (125) obtained by a device (100) at one level of a transformation sequence is securely communicated to another device (200) at another level of the transformation sequence. To assure that the communicated authentication information (125) is not merely a copy of previously communicated authentication information, each communication (145) includes an item (255) that the receiving device (200) can verify as having been recently generated.

Abstract: The process comprises the steps consisting in: (a) receiving data in a first device, the data containing at least one anticopy protection system identifier; (b) verifying whether the first device is connected to a data recording device by a digital bus; and in case of positive verification: (c) verifying whether the first device comprises a module implementing an anticopy protection system whose identifier is included in the data; and in case of positive verification: (d) offering a user access to the data according to a first mode of access (PPVR) authorizing the recording of the data; and in case of negative verification in step (b) or step (c): (e) offering a user access to the data according to a second mode of access (PPV) not authorizing the recording of the data.

Abstract: Various techniques are provided for the gifting between multiple electronic devices of media content provided by an online digital media provider. An offer and acceptance of a selected gift file is accomplished between a gifter device and a receiving giftee device using a near-field communication (NFC) connection. If a connection to the online provider is available, the gifter device may transmit a gift request by which the gifter's account is charged for the gift file. Thereafter, a gift file created using DRM keys associated with the giftee's account may be downloaded to the giftee device. If a network connection is unavailable, the giftee device may transfer a locked gift file and a corresponding gift license to the giftee device using a peer-to-peer connection. The giftee device may authenticate the license and unlock the gift file once a connection to the online provider is available.

Abstract: A novel method and apparatus for protection of streamed media content is disclosed. In one aspect, the apparatus includes control means for governance of content streams or content objects, decryption means for decrypting content streams or content objects under control of the control means, and feedback means for tracking actual use of content streams or content objects. The control means may operate in accordance with rules received as part of the streamed content, or through a side-band channel. The rules may specify allowed uses of the content, including whether or not the content can be copied or transferred, and whether and under what circumstances received content may be “checked-out” of one device and used in a second device. The rules may also include or specify budgets, and a requirement that audit information be collected and/or transmitted to an external server. In a different aspect, the apparatus may include a media player designed to call plugins to assist in rendering content.

Abstract: An apparatus, system method and computer program product configured to transmit data over a broadcast network. The data is encrypted and decoded using a decryption key available to terminals in combination with a digital rights object. A media guide is broadcast to the terminals. Information from the media guide is also stored by a request handling means in order to ensure that information, such as pricing information, broadcast to the terminals is synchronized with information used to register a terminal as a subscriber. A request is sent from a terminal to the broadcast network through a second network. Authentication information identifying the terminal may be included in the request without manual input from a user of the terminal. Authentication information is extracted from a component or added to the message by a component of the second network. The digital rights object is then sent to the terminal via the second network.

Abstract: To provide a content playback device capable of protecting content according to DRM, when decrypting encrypted content recorded on a recording medium and playing the decrypted content. If key generation information is “00”, a key control unit 104 concatenates a decrypted media key and content information in this order, and applies a one-way function to the concatenation result to generate a content key. If the key generation information is “10”, the key control unit 104 sets a rights key as the content key. If the key generation information is “01”, the key control unit 104 concatenates the decrypted media key and the rights key in this order, and applies a one-way function to the concatenation result to generate the content key.

Abstract: Certain embodiments of the present invention provide systems and methods for managing medical information. Certain embodiments provide a local electronic medical record system including a local personal health record (PHR) client, the PHR client downloading encrypted patient documents from a remote PHR server and parsing the downloaded encrypted patient documents to form a local PHR database. The example system also includes an interface receiving user input including an encryption key to decrypt the downloaded encrypted patient documents and displaying patient medical information to the user based on the downloaded decrypted patient documents.

Abstract: A digital differential steganographic system and method includes a master key that is generated from an unmarked media, a mark-point reservoir created from the unmarked media and containing a set of viable candidate mark points for the unmarked media, and a mark-point applicator to insert data into the unmarked media at selected mark-points chosen from the mark-point reservoir creating a digital watermark. The method includes using an original unmarked media, shaping and testing marks in the original media for predictable distortion, verifying embedded marks at point of insertion in the original media, minimizing mark energy and duration for least-perceptible change, and using non-distributed, unmarked media of the original media as a master key.

Abstract: A multi-merchant purchasing system is configured to identify downloadable products selected by a user for purchase. The identified downloadable products are offered by multiple merchants. The multi-merchant purchasing system enables the user to purchase all of the downloadable products in a single transaction. Specifically, the multi-merchant purchasing system determines payment information associated with the user and, with minimum user-interaction, sends the payment information to applications associated with the merchants for processing. The multi-merchant purchasing system may also be configured to receive purchase information from the merchant applications and maintains the purchase information for the user in a locker. The multi-merchant purchasing system may further be configured to automatically download and install the purchased product onto the user's computing device through a software assistant.

Abstract: A method for providing protected content, wherein content usage rights information and/or usage state information is embedded into obtained primary data that serves as a basis for a content item to be provided thereby providing the primary data with the embedded content usage rights information and/or usage state information as the content item.

Abstract: A management server has: an identification-information reproducing unit which reproduces identification information from an optical disk; an invalid-unit intrinsic-information registration section which registers the reproduced identification information; and a restriction-lifting decision section which decides, on the basis of the registered identification information and unit intrinsic information given intrinsically to every recording unit, whether the identification information can be recorded on a master optical disk.

Abstract: The present invention provides a method and system for location-based digital rights management. Digital rights for protected content are restricted to a specific location or region by specifying the approved location of the consuming device within the license. This allows the content owner to specify the geographic locations/regions at which the protected content may be consumed. The device obtains its location from a location entity which is then evaluated against the location constraint within the license. If the device is within the location constraint then the content may be accessed. Acquiring the location of the device before allowing access to certain content helps in preventing a user from accessing a protected document in an area which is considered a prohibited location as defined within the license.

Abstract: Systems and methods for enabling a user to obtain rights in a legitimate copy of a digital content unit without downloading the copy from a digital content store are provided. The systems and methods provide an encrypted copy of a digital content unit to a first user and transcript the encrypted copy to generate the legitimate copy to a second user. The encrypted copy is encrypted with a first encrypt key that may be associated with the first user and the legitimate copy is encrypted with a second encrypt key that may be associated with the second user.

Abstract: In an electronic musical apparatus, a media ID (MD1, MD2, MD3, MD4, MD5) is associated with each recording media of a memory card 8, hard disk device 10, flash memory ROM 11, CD-ROM 12 and internet 15. Each media ID is encrypted to be recorded on a different position in a ROM 2. Upon reading a music content, the media ID of the corresponding recording media is decoded to decode the music content based upon the media ID and the secret key, and then, the resultant is temporarily stored in a RAM 3. Upon writing a music content, it is encrypted based upon the media ID corresponding to a recording media and the secret key, and the content in the RAM 3 is deleted. This makes cryptanalysis hard to thereby enhance a protection level of a music content in an electronic musical apparatus.

Abstract: In an electronic musical apparatus, a media ID (MD1, MD2, MD3, MD4, MD5) is associated with each recording media of a memory card 8, hard disk device 10, flash memory ROM 11, CD-ROM 12 and internet 15. Each media ID is encrypted to be recorded on a different position in a ROM 2. Upon reading a music content, the media ID of the corresponding recording media is decoded to decode the music content based upon the media ID and the secret key, and then, the resultant is temporarily stored in a RAM 3. Upon writing a music content, it is encrypted based upon the media ID corresponding to a recording media and the secret key, and the content in the RAM 3 is deleted. This makes cryptanalysis hard to thereby enhance a protection level of a music content in an electronic musical apparatus.

Abstract: Embodiments protect user data in its entirety from unauthorized access when an authorized user does not access a medium for a predetermined length of time by making encryption key data used to encrypt the user data unavailable. In one embodiment, using a magnetic disk in which a data losing time of an encryption key data recording area is shorter than a user data recording area, recording is performed to the magnetic disk while encrypting user data during recording, and encryption key data for use with encryption is recorded in the encryption data recording area. For reproduction of the user data, the encryption key data is read from the encryption key data recording area, and the user data encrypted during the recording is output while being decrypted using an encryption key generated by the encryption key data, and the encryption key data is overwritten on the encryption key data recording area.

Abstract: The present disclosure related generally to audio and video signal processing. Various arrangements are disclosed. One method recites: (a) obtaining data representing audible portions of audio or representing picture portions of video; (b) using a programmed electronic processor, determining identifying information from the obtained data by computing a frequency transform to produce frequency transform data, and processing the frequency transform data to derive a pattern, and using the pattern as the identifying information for the audio or video; and (c) using the identifying data to facilitate purchase or license of the audio or video. Other arrangements are disclosed as well.

Abstract: Generally the more effective is the copy protection provided on an optical disc, such as a DVD, the greater is the likelihood that the copy protection will adversely interfere with legitimate uses of the optical disc. It is therefore proposed to include at least one region of subversive data within the content in the data area of an optical disc, and then to prevent access to each such region of subversive data during normal playback of the disc. For a DVD, the subversive data may be incorporated within video objects and/or may be in gaps between files in the DVD_Video zone. It is arranged that there are no navigable paths to the regions of subversive data.

Abstract: A proprietary portable audio player system for protecting digital content copyrights, which includes a proprietary portable audio player, a web access interface, and an online music server. The proprietary portable audio player has a hardware unique device identity. The proprietary portable audio player has a playback token acquirement mode and uses a first transmission medium to link with the online music server to thereby obtain a playback token for a corresponding music file playback. The online music server pre-stores a plurality of music files with compression formats, a plurality of playback tokens, and a mapping table. When a playback token signal from the web access interface is received, the online music server accordingly issues a playback token corresponding to a specific music file, updates the mapping table, and sends the playback token to the proprietary portable audio player through the first transmission medium.

Abstract: Technologies to transfer responsibility and control over security from player makers to content authors by enabling integration of security logic and content. An exemplary optical disk (200) carries an encrypted digital video title combined with data processing operations that implement the title's security policies and decryption processes. Player devices include a processing environment (e.g., a real-time virtual machine), which plays content by interpreting its processing operations. Players also provide procedure calls to enable content code to load data from media, perform network communications, determine playback environment configurations (225), access secure non-volatile storage, submit data to CODECs for output (250), and/or perform cryptographic operations. Content can insert forensic watermarks in decoded output for tracing pirate copies.

Abstract: A system and method is provided for identifying the source of an unauthorized copy of content. The method includes embedding a unique user fingerprint code to into each of a plurality of authorized copies of content and identifying an unknown fingerprint code in an unauthorized copy of the content. Each member of the unknown fingerprint code is compared to each corresponding member in each of the user fingerprint codes. A score is assigned to each of the user fingerprint codes based on the comparison and users associated with scores exceeding a threshold are identified as a source of the unauthorized copy.

Abstract: A system structured from a management device, a content key distribution device and a plurality of terminals suppresses the data volume of a terminal revocation list (TRL). The management device generates and transmits a TRL formed from data that expresses terminal IDs of all terminals to be invalidated, by only a value and a position of a common bit string in the IDs, to the content key distribution device. Each terminal holds a terminal ID that includes a manufacturer ID and a serial number, and requests the distribution of a content key by sending the terminal ID to the content key distribution device. The content key distribution device refers to the TRL, judges whether the terminal ID transmitted from the terminal is that of an invalidated terminal, and if negative, encrypts and transmits the content key to the terminal.

Abstract: An information processing device, for executing content reproduction processing from an information recording medium, includes a security information processing unit for determining output messages based on security check information in a content reproduction sequence, and outputting a message output command accompanied by selection information of the output message to a user interface processing unit, and a user information processing unit for obtaining message information based on the selection information input from said security information processing unit and outputting to a display unit.

Abstract: A digital work (102) and copyright management information (103) for the digital work are recorded on an information recording medium (101) by altering a shape, a position or a pattern (104, 105) of recording mark edges of the digital work. Alternatively, a decryption key for the right management information is recorded on an information recording medium on which the copyright management information has been recorded encrypted, by altering the recording mark edges of the copyright management information. Alternatively, a check code for the copyright management information is recorded on the information recording medium by altering the recording mark edges. The check code is checked when the copyright management information is read, thus detecting illegal use of the copyright management information.

Abstract: The conditional access system in a single frequency network in a digital broadcasting system includes a main broadcasting system transmitting encoded broadcasting signals including a data stream and transmitter identification information (TII) through a main broadcasting network; a repeating system amplifying and transmitting encoded broadcasting signals of the main broadcasting network, or modulating and amplifying a stream input by the main broadcasting system through a cable, and repeating broadcasting signals of the main broadcasting system through a repeating network; a subscriber station decoding the encoded signals of the main broadcasting network included in the broadcasting signals received through the main broadcasting network or the repeating network, TII, and an encoding key according to a decoding method; and a decoding key provider receiving a decoding key from the main broadcasting or repeating system, authenticating a user, and transmitting the decoding key to a charged subscriber station thro

Abstract: Methods, systems, and apparatus are disclosed which enable flexible insertion of forensic watermarks into a digital content signal using a common customization function. The common customization function flexibly employs a range of different marking techniques that are applicable to a wide range of forensic marking schemes. These customization functions are also applicable to pre-processing and post-processing operations that may be necessary for enhancing the security and transparency of the embedded marks, as well as improving the computational efficiency of the marking process. The common customization function supports a well-defined set of operations specific to the task of forensic mark customization that can be carried out with a modest and preferably bounded effort on a wide range of devices. This is accomplished through the use of a generic transformation technique for use as a “customization” step for producing versions of content forensically marked with any of a multiplicity of mark messages.

Abstract: A robust technique to prevent illicit copying of video information notwithstanding the use of image scaling. A watermark is embedded into the video signal (e.g., DVD's content or other video sources) at different scales (i.e., sizes). The watermark is maintained at each scale for a predetermined time duration that is sufficient to allow the detector circuit in a DVD-recorder, DVHS recorder, DVCR, or any other digital format recorder to detect, extract, and process information contained in the watermark. At the end of the predetermined time duration, the watermark is changed to a different scale preferably on a pseudo-random basis to ensure that each one of all the scales in a predetermined scaling range is achieved a predetermined number of times. Thereby the recorder shuts off a number of times during play of the content, each time the detector circuit senses the watermark.

Abstract: A block-level storage device is provided that implements a digital rights management (DRM) system. In response to receiving a public key from an associated host system, the storage device challenges the host system to prove it has the corresponding private key to establish trust. This trust is established by encrypting a secure session key using the public key. The host system uses its private key to recover the secure session key. The storage device may store content that has been encrypted according to a content key. In addition, the storage device may encrypt the content key using the secure session key.

Abstract: A method and apparatus for encrypting or decrypting digital content are provided. In the method, a binding range is selected from a plurality of binding ranges of content use based on license information of the content, and the content is encrypted based on the selected binding range so that the content can be used only within the selected binding range. Accordingly, it is possible to limit content use to a plurality of binding ranges of use of the content, using license information of the content.

Abstract: Usage rights information indicating a license which is usage rights corresponding to contents is stored in a license storage device, and at the time of using the contents, the rights information is output from the license storage device to a contents using device and further transmitted to a contents distribution server, and legitimacy verification of the rights information is executed at the contents distribution server, such that contents corresponding to the rights information are transmitted to the contents using device. Thus, a device and method is realized whereby distribution of contents over a network and use thereof is enabled without detracting from safety and user convenience.

Abstract: A method and system for distributing digital information is disclosed. Preferably, a user acquires a tangible object which contain a code authorizing access to the digital information. The user reads the tangible object through a reader, which sends the code to a server on which the digital information is stored. The server then authorizes access to the digital information to one or more access devices listed in registries belonging to the user. The user may use the digital information on the terms he agrees to, and, while in use by the user, access to the digital information to other users or other playback devices is disabled. Once the user no longer is using the digital information, the access device erases the digital information, and signals the server that the digital information is no longer in use, thereby re-enabling access to the digital information by the other playback devices listed in the registry.

Abstract: A computerized intellectual property trading exchange is disclosed for facilitating the trading of license contracts relating to intellectual property rights. The exchange includes at least one intellectual property license contract relating to intellectual property rights and a computer-accessible forum configured to allow a plurality of participants to trade the license contract. The plurality of participants includes at least one seller, which may be the owner, having the license contract and desiring to trade the license contract. The plurality of participants also includes at least one buyer desiring to obtain the license contract. The buyer may be an investor, speculator, market maker, or arbitrageur, who purchases the license contract to achieve appreciation. The buyer also may be a licensee, who purchases the license contract to practice the intellectual property rights.

Abstract: When captured content is detected, the captured content is analyzed to determine whether any portion of the content is subject to digital rights management protection specified for content captured. Responsive to determining that the captured content is subject to a first digital rights management protection, a database is queried to select at least one digital rights management rule associated with a first restricted element specifying at least one first criteria for combining the first restricted element with at least one other element. A determination is made whether the first restricted element is combined with the at least one other element in the captured content. Responsive to detecting the first restricted element is combined with the at least one other element, the captured content rights controller determines a combined digital rights management protection rule reconciling the at least one first criteria for combining the first restricted element with the presence of the at least one other element.

Abstract: A method for reducing overhead when transmitting an Internet Protocol (IP) packet begins by selecting a watermarking signature based on the IP address of the packet. The watermarking signature is applied to the packet and the IP address is removed from the packet. The packet is sent to a receiver, which looks up the IP address of the packet by using the watermarking signature. The watermarking signature can be a radio frequency watermarking signature or a digital watermarking signature. A similar method employing watermarking can be used to reduce medium access control header overhead.

Abstract: The present invention encrypts authentication information into an image, document or recording. Briefly described, in architecture, one embodiment is a method comprising generating the original work; generating authentication data when the original work is generated, the authentication data comprising at least location information identifying the location where the original work is generated, the location information provided by a received signal from a remote device, date and time information identifying when the original work is generated, the date and time information provided by a received signal from a remote device, and biometric information identifying an originator of the original work; and encrypting the original work with the authentication data using a secret private key when original work is generated.