17results about "Data stream serial/continuous modification" patented technology

An intra-vehicle network-based communication method and an apparatus are provided, to resolve a problem in the conventional technology that a packet is easy to be eavesdropped on when an ECU transmits the packet. In this application, a first ECU performs an operation using a first key and a first fresh value to generate a keystream; performs an exclusive OR operation using the keystream and a to-be-transmitted first plaintext packet to generate a first ciphertext packet; and sends the first ciphertext packet to a second ECU. The first fresh value is a value generated by a counter in the first ECU when the first ECU transmits a packet, and the counter is configured to record a quantity of packets transmitted by the first ECU. The first ECU transmits the first ciphertext packet to the second ECU. This can prevent the first packet transmitted by the first ECU from being eavesdropped on, and help improve confidentiality of the packet transmitted by the first ECU.

To provide a suitable system and method for protecting an elementary bitstream that incorporates an independently encoded tile.SOLUTION: There are provided a system and a method for partial frame encryption according to an embodiment of the present invention. In one embodiment, the method receives a video bitstream including a number of frames, each frame including a number of independently encoded compression units, and encrypts some of the number of compression units of the number of frames and generates an output bitstream that includes a number of independently encoded compression units, including some of encrypted compression units.SELECTED DRAWING: Figure 1

A generative machine-learning model may be used for data compression / decompression. The model at an encoder may be prompted with at least one symbol, e.g. the first portion of information to be compressed. The model may generate an array of values, each corresponding to a possible next symbol. A code word representing the index of the array at which there is a value corresponding to the next symbol of the information may be selected and included in a compressed version of the information in place of the next symbol. The model at the decoder may be prompted with the same at least one symbol. The model may generate an array of values, each corresponding to a possible next symbol. A symbol corresponding to a value at an index of the array represented by the code word may be selected. A decompressed version of the information may be generated.

A generative machine-learning model may be used for data encryption / decryption. In one example, a model may be configured based on at least one configuration setting. The model at an encoder may be prompted. The model may generate an array of values, each corresponding to a possible next symbol. A code word representing the index of the array at which there is a value corresponding to the next symbol of the information may be selected as an encrypted version of the symbol. The model at the decoder may be configured like the model at the encoder. The model at the decoder may be prompted. The model may generate an array of values, each corresponding to a possible next symbol. A decrypted symbol corresponding to a value at an index of the array represented by the code word may be selected.

The present disclosure relates to a transmitting device and a transmitting method, and a receiving device and a receiving method which are capable of improving confidentiality and communication resistance in low power wide area (LPWA) communication. The transmitting device generates a key stream on the basis of GPS time information, encrypts transmitted data on the basis of the key stream to generate encrypted data, and transmits the encrypted data to the receiving device. The receiving device generates a key stream on the basis of GPS time information and decodes the encrypted data into the transmitted data on the basis of the key stream. The present disclosure can be applied to an LPWA communication system.

A method and apparatus of a first network entity in a wireless communication system is provide. The method and apparatus comprises: identifying at least one set of bit strings to generate a ranging scrambled timestamp sequence (STS); identifying at least one initialization vector (IV) field corresponding to the at least one set of bit strings, wherein the at least one IV field comprises a 4-octet string; generating a ranging STS key and IV information element (RSKI IE) that includes the at least one IV field to convey and align a seed that is used to generate the ranging STS; and transmitting, to a second network entity, the generated RSKI IE for updating the ranging STS of the second network entity.

The present invention provides an apparatus and method for decoding data streams that should be checked for reliability. [Solution] An apparatus and method for checking the reliability of a data stream are described. According to one embodiment, one or more supplemental information messages are considered in the reliability of the data stream. According to another embodiment, the data stream indicates whether a segment is the first segment or whether a segment is the last segment in a sequence to which segments are assigned. According to a further embodiment, repetition of a particular supplemental information message within a particular part of the data stream is either not included in the reliability check or is prohibited within the data stream.

A generative machine-learning model may be used for data compression / decompression. The model at an encoder may be prompted with at least one symbol. The model may generate an array of values, each corresponding to a possible next symbol. A code word representing the index of the array at which there is a value corresponding to the next symbol of the information may be selected. The model at the decoder may be prompted with the same at least one symbol. The model may generate an array of values, each corresponding to a possible next symbol. A symbol corresponding to a value at an index of the array represented by the code word may be selected. To provide for encryption / decryption, the model at the encoder may be configured based on at least one configuration setting. The model at the decoder may be configured like the model at the encoder.

The present disclosure relates to a computing device for low-power quarter round operation, especially to reducing power consumption of a computing device for a quarter round operation by segmenting adder into a plurality of sub-adders and suppressing glitches in the output of each of the sub-adder while processing quarter round operation, which is used for a stream cipher, at high speed through hardware. The combinational logic circuit for quarter round operation is segmented into predetermined bit units to form pipelines composed of predetermined stages, so the segmentation and pipelining not only improve processing speed but also prevent glitch propagation.

This disclosure provides an encryption / decryption system, an optical module, and a related apparatus and system, and belongs to the field of network communications technologies. The encryption / decryption system includes an encryption / decryption component, a first interface component, and a second interface component. The encryption / decryption component is configured to encrypt a first physical layer data stream from the first interface component and transmit the encrypted first physical layer data stream to the second interface component, and is configured to decrypt a second physical layer data stream from the second interface component and transmit the decrypted second physical layer data stream to the first interface component. According to this disclosure, a delay caused by encryption / decryption during data transmission can be reduced.

Methods and apparatus for inadvertent transmission using a trusted intermediary environment are described. A requested data object is identified using a data object identifier. The requested data object is stored as a plurality of corresponding data blocks on a plurality of data buckets. The data object identifier is encoded with information identifying each data block of the plurality of corresponding data blocks within each respective data bucket. A trusted intermediary environment receives a data stream including data blocks stored in an assigned data bucket. Using the encoded information from the data object identifier, the trusted intermediary environment determines which data block of the data stream is a corresponding data block streamed from the assigned data bucket.

There is provided a processing system (1) configured to execute a processing function f(x) in response to the receipt of an input information word x comprising k information symbols, the processing system comprising a protection device (10) configured to protect the execution of the processing function using a tweakable code-based masking, and a processing unit (11) to execute the processing function, by decomposing its execution into one or more basis operations comprising one or more elementary operations comprising at least a component-wise multiplication operation, the processing unit (11) comprising a multiplier (105) configured to perform the multiplication operation. The protection device (10) determines an encoding matrix A from an information code and a masking code, being linear codes and being determined randomly, the processing device comprising an encoder (102) configured to encode the input information word x, and each operand of an elementary operation, prior to its execution using the encoding matrix A. The multiplication operation performed by said multiplier (105) is further masked using the pseudo-inverse matrix A -1 of the encoding matrix A, and the pseudo-inverse transpose matrix A -T of the encoding matrix A, such that (AT)-1 = (A-1)T.

In an embodiment, a set of hash functions and a set of data streams to be hashed may be received. Each of a first hash function and a second hash function may be selected from the received set of hash functions by using a hash selector in an encoder system. The first hash function is applied on a first set of data streams to generate a first hashed data stream. The second hash function is applied on a second set of data streams to generate a second hashed data stream. An encoded data stream associated with the set of data streams is generated. The generated encoded data stream is transmitted to a decoder system associated with the encoder system, wherein the decoder system is configured to determine the set of data streams from the transmitted encoded data streams, based on both the first hash function and the second hash function.