Institute for Information Industry

Far Eastern New Century Corporation

Ting-Yu Lin

Li-Ling Chang

Chia-Min Lai

Jian-Wei Liao

Yow-An Leu

Ching-Chun Tsai

Wen-Yi Chang

Cheng-En Lee

Ping-Chun Chen

Encrypted signal segment locating device and method. The device is configured to execute the following operations. An encrypted signal template is transformed into a signal template formed by template data points. The signal template is adjusted based on a frequency difference and a clock rate difference between a side-channel input signal and the signal template to generate an adjusted template. The adjusted template and the side-channel input signal are compared by using a sliding window to generate compared segments in the side-channel input signal and similarities corresponding to the compared segments. When the similarities are higher than a threshold, one of the compared segments is selected as an encrypted signal segment, and an encryption position is located by using the sliding window, wherein the encrypted signal segment is the compared segment having a highest similarity.

Encrypted signal segment locating device and method

The present invention provides an encryption determining method. The method includes the following steps: receiving a side channel signal; generating a filtered side channel signal by filtering noise within the side channel signal; generating a phasor signal by utilizing a filter to covert the filtered side channel signal; locating the encrypted segment by calculating a periodicity of the phasor signal utilizing a standard deviation window; extracting at least one encrypted characteristic from the encrypted segment; and generating an encryption analytic result by recognizing the at least one encrypted characteristic according to a characteristic recognition model; wherein the encryption analytic result includes a position of the encrypted segment within the side channel signal, and an encryption type corresponding to the side channel signal. The present invention is able to automatically and efficiently locate the encryption segment and analyze the encryption type corresponding to the side channel signal.

Encryption determining device and method thereof

An RF fingerprint signal processing device configured for executing a machine learning algorithm on a plurality of input signals. The RF fingerprint signal processing device includes a receiver-feature determination circuit and a classifying determination circuit. The receiver-feature determination circuit is configured to compute on the plurality of input signals in a neural network. The classifying determination circuit is coupled with the receiver-feature determination circuit, and the classifying determination circuit is configured to send feedback information of a receiver-feature component to the receiver-feature determination circuit. The receiver-feature determination circuit decreases the receiver-feature weight of the neural network. The receiver-feature weight is associated with the receiver-feature component, and the receiver-feature weight which is decreased is applied for computing an output value of the neural network.

RF fingerprint signal processing device and RF fingerprint signal processing method

A heat-shrinkable polyester film made of a polyester-forming resin composition includes a recycled material, and has an exothermic crystallization peak and an endothermic melting peak which are determined via differential scanning calorimetry, and which satisfy relationships of T2−T1≤68° C. and T3−T2≤78° C., where T1 represents an onset point of the exothermic crystallization peak, T2 represents an end point of the exothermic crystallization peak and an onset point of the endothermic melting peak, and T3 represents an end point of the endothermic melting peak. A method for manufacturing the heat-shrinkable polyester film is also disclosed.

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Taipei, Taiwan

Ting-Yu Lin