Matches 1 - 50 out of 114 1 2 3 >


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US20130077780 METHOD AND APPARATUS FOR FACILITATING EFFICIENT AUTHENTICATED ENCRYPTION  
In some embodiments, a key shared between communicating parties is mapped to a key variant using a block cipher. The key variant is mapped into a sequence of basis offsets using shifts and...
US20110129086 Unicode-Compatible Stream Cipher  
A process and system for enciphering and deciphering Unicode characters that is compatible with scripting languages such as JAVASCRIPT®, JSCRIPT® and VBSCRIPT®. The process and system can encipher...
US20120057697 SECURITY OF A MULTIMEDIA STREAM  
A method including receiving encrypted multimedia information of a multimedia broadcast multicast service streaming session, wherein the multimedia information is encrypted using an encryption...
US20110173446 System and Method for Securing Wireless Transmissions  
A system and method for securing wireless transmissions is provided. A method for transmitting secure messages includes selecting a bin of codewords from a plurality of bins. The bin of codewords...
US20090199003 SMART CARD AND METHOD FOR USING A SMART CARD  
The invention provides as smart card, a secured client with a smart card and a method for use in a smart card. The smart card is configured for counting ECMs associated to a particular portion of...
US20120155639 ENCRYPTED CONTENT STREAMING  
Encrypted content streaming is provided by a method comprising holding an encrypted content stream that is cryptographically encrypted from a content stream with a content key, and holding an...
US20100061549 RIGHT OBJECT RENEWAL METHOD AND APPARATUS FOR RIGHT-PROTECTED BROADCAST SERVICE  
A Right Object renewal method and apparatus for a right-protected digital broadcast service that is capable of predicting the expiration of a Right Object issued for the right-protected broadcast...
US20090208000 SIGNATURE MANAGEMENT METHOD AND SIGNATURE MANAGEMENT DEVICE  
A signature management apparatus and method of cutting-out streaming data. The signature management apparatus includes a signature-related information preparing device which prepares...
US20090202067 CRYPTOGRAPHIC SYSTEM CONFIGURED TO PERFORM A MIXED RADIX CONVERSION WITH A PRIORI DEFINED STATISTICAL ARTIFACTS  
A cryptographic system (CS) is provided. The CS (800) comprises a data stream receiving means (DSRM), a generator (702), a mixed radix converter (MRC) and an encryptor (908). The DSRM (902) is...
US20080279371 METHODS OF ENCRYPTING AND DECRYPTING DATA AND BUS SYSTEM USING THE METHODS  
Methods of encrypting and decrypting data, and a bus system using the methods are provided. The method of encrypting data includes: performing an operation on data that is to be transmitted...
US20120114118 KEY ROTATION IN LIVE ADAPTIVE STREAMING  
Key rotation required for adaptive streaming of data is described. Metadata is added or provides extensions to two file formats, namely, ISO-based FF (also known as MP4 FF) and MPEG2-TS. A new...
US20050097596 Re-encrypted delivery of video-on-demand content  
A method of storage and distribution of video-on-demand content consistent with certain embodiments involves receiving a request from a subscriber terminal to transfer the selection of video...
US20060233362 Early detection system and method for encrypted signals within packet networks  
A system and method for providing early detection of encrypted signals within a secure connection for voice over Internet protocol (VoIP). The system and method includes a non-complex, in-band,...
US20100122276 Method and System for Protecting Cable Television Subscriber-Specific Information Allowing Limited Subset Access  
A television program ratings method and system includes transferring information associated with households from a cable provider to a ratings provider such that the ratings provider has access to...
US20090323938 Mechanism for transport-safe codings for cryptographic use  
In one embodiment, a mechanism for transport-safe codings for cryptographic use is disclosed. In one embodiment, a method for transport-safe coding for cryptographic use includes converting an...
US20090129589 SECURITY SYSTEM AND METHOD FOR USE IN NETWORK  
A security system, method and device for use in a network for providing a real-time stream are provided. A server updates security association of a terminal device by periodically providing a key...
US20130129085 System And Method For Decryption Of Content Including Partial-Block Discard  
Embodiments may include receiving a protected version of content that includes multiple encryption chains each including encrypted blocks of content. The protected version of content may include...
US20090052661 REDUCED HIERARCHY KEY MANAGEMENT SYSTEM AND METHOD  
A controller receives an encrypted media stream (“EMS”) and an identifier indicative of a selected content key from a headend. The EMS is encrypted with an encryption key and can be decrypted with...
US20080199004 Cipher System  
A system including a pseudo-random number generator having a register to store an extended state having a reduced state and a dynamic constant, an initialization module to initialize a part of the...
US20070217603 Decryption key reuse in encrypted digital data stream distribution systems  
A data processing apparatus for a first encrypted digital datum in a digital data stream distributed in a distributed system. The apparatus includes a key extractor for obtaining a symmetric...
US20050069128 Data-generating device and data-writing device for FPGA  
Configuration-wiring information is generated by a function-restricted netlist. A data-writing device writes the generated information to FPGAs. The restriction-lifting section lifts the...
US20060210071 Encryption of security-sensitive data  
Techniques are provided for processing data. It is determined that a portion of a data stream to be transmitted includes a security-sensitive portion. The security-sensitive portion of the data...
US20100027791 FUZZY PROTECTION OF VISUAL CONTENT  
A method and system for encoding visual information are described. An image is divided in to n number of patterns. Each pattern is mapped on a matrix i.e positioned on X and Y-axis. The patterns...
US20080170686 CONFIDENTIAL INFORMATION PROCESSING APPARATUS, CONFIDENTIAL INFORMATION PROCESSING DEVICE, AND CONFIDENTIAL INFORMATION PROCESSING METHOD  
The confidential information processing device according to the present invention includes: a stream analysis unit which determines the target data by analyzing the data stream; a cryptographic...
US20080052537 Storage device, write-back method, and computer product  
In a redundant array of inexpensive disks (RAID) device, an encrypting unit encrypts data to be written back at a timing when a write-back processing unit performs a write-back of the data. The...
US20090147954 Partial Dual-Encryption Using Program Map Tables  
Systems and method for partial encryption are disclosed. One example method comprises: creating a program association table to include a first program number which identifies a program encrypted...
US20080130889 Multi-data rate cryptography architecture for network security  
An architecture and associated methods and devices are described that include a plurality of stages of cipher round logic, each stage configured to perform cryptographic processing of plaintext...
US20100034379 CONTENT ASSESSMENT APPARATUS, CONTENT ASSESSMENT METHOD, INFORMATION REPRODUCING APPARATUS, AND INFORMATION REPRODUCING METHOD  
A content assessment apparatus, content assessment method, information reproducing apparatus, and information recording medium are provided that can determine whether digital content has been...
US20100002875 Slice-Based Prioritized Secure Video Streaming  
Slice-based prioritized secure video streaming comprises a transmitter receiving a slice comprising a plurality of macroblocks and selecting an encryption key based at least in part on a relative...
US20090141888 METHOD AND APPARATUS FOR PERFORMING TRICK PLAY ON SCRAMBLED DATA STREAM  
A method of performing trick play on a scrambled data stream, the method comprising: extracting position information corresponding to scrambling information from an input scrambled transport...
US20100166178 METHOD AND SYSTEM FOR SECURING PACKETIZED VOICE TRANSMISSIONS  
An approach is provided for providing secure packetized voice transmissions. A public/private key pair is generated at a call device (or endpoint). An encrypted voice stream is received from...
US20100067693 SYSTEM AND METHOD OF ENABLING CONTENT OUTPUT ON A DIGITAL DEVICE  
In one embodiment the present invention includes a system and method of distributing content. Authorization information is encoded with the content. When received and decoded, if a particular...
US20090136026 WATERMARK EMBEDDING USING LOOK-UP TABLES  
The invention relates to embedding a spread spectrum watermark in a data signal as well as to detection of the embedded watermark. A data signal (4) is encrypted (15) or received in the form of an...
US20080175378 Parallel encryptor and decryptor  
An encryptor/decryptor which receives a continuous parallel data stream either in a single-ended TTL or a Low Voltage Differential Signaling format. The encryptor/decryptor selectively encrypts or...
US20060126841 Method and apparatus for a security system for wireless networks  
A Method and Apparatus for a Security System for Wireless Networks is described. The technique involves encryption and decryption at the Physical layer. It also develops a criterion for choosing...
US20100074444 Method and System for OCDM-Based Photonic Layer Security Robustness to Spoof Data Integrity  
A system and method is provided for identifying fraudulent data in an optical data transmission. The system and method includes scrambling an encoded data signal using dynamically changing...
US20100067688 Method and system for encoding multimedia content based on secure coding schemes using stream cipher  
Described herein are various embodiments of a coding technique that utilize a stream cipher for switching between first and second coding conventions for encoding a symbol sequence. The first...
US20050097597 Hybrid storage of video on demand content  
A multiple selective encryption method for digital content consistent with certain embodiments involves selecting a plurality of packets for encryption according to a selection criterion, to...
US20090257584 Encrypted stream processing circuit and method of processing encrypted stream  
An encrypted-stream processing circuit includes: a decryption mechanism decrypting an encrypted stream; a stream-data processing mechanism separating a plurality of packets included in a stream...
US20060177055 Conditional access system for digital multimedia broadcasting and method therefor  
A digital multimedia broadcasting (DMB) conditional access system (CAS) for solving the difficulty in providing an adequate broadcasting signal by installing repeaters in shadow areas and...
US20100246819 Method to upgrade content encryption  
Generation of secret keys is carried out in a smartcard for use by a receiver device's main processor, or alternatively, decryption processing for selectively encrypted content is carried out in...
US20100034375 SECURE WIEGAND COMMUNICATIONS  
The present invention is directed toward secure access systems. Specifically, a method and system is provided that enhances the security of unidirectional communication protocols used in access...
US20070189525 Method and system providing scrambled content  
A method of providing scrambled data includes providing a stream of data units based on a sequence of clear data units by at least subjecting at least part of at least some of the clear data units...
US20090041234 METHOD AND APPARATUS FOR ENCRYPTING AND DECRYPTING DATA TO/FROM AN ESCON TAPE SYSTEM  
A method and apparatus for encrypting data written to an Enterprise System Connection (ESCON) tape system and reading encrypted data from such a tape system and decrypting the encrypted data is...
US20070053512 Method and apparatus for improving security in a voice over internet protocol session  
A method and apparatus are disclosed for security in a VoIP (Voice over Internet Protocol) message. A system that incorporates teachings of the present disclosure may include, for example, an...
US20050102702 Cablecard with content manipulation  
A CableCARD device for manipulation of a stream of data has an inband data input for receiving a stream of data from a host, the stream of data having a plurality of packets each having a packet...
US20070195953 Method And System For The Secure Distribution Of Compressed Digital Texts  
A process for the secure distribution of compressed digital texts formed by blocks of binary data stemming from digital transformations applied to an original text, and including two stages: a...
US20080298580 CONTENT DELIVERY SERVER AND CONTENT DELIVERY SYSTEM  
A content delivery server comprises a packet generator operative to generate packetized content data; an encryptor operative to encrypt the packetized content data with content key data to...
US20120027204 BANDWIDTH EFFICIENT METHOD AND SYSTEM FOR OBSCURING THE EXISTENCE OF ENCRYPTION IN A COMMUNICATIONS CHANNEL  
A system, method, and network interface obscures the existence of data encryption in a communication network is provided. A set of characters is generated by using a set of encryption keys as an...
US20050129228 Modular computerized encryption scheme  
This paper introduces a design of a series of six modular computerized ciphers which can be performed sequentially and in a number of rounds, to form an encryption scheme greater than the sum of...

Matches 1 - 50 out of 114 1 2 3 >