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|1. (WO2017033348) SIGNATURE GENERATION SYSTEM, SIGNATURE GENERATION APPARATUS, AND SIGNATURE GENERATION METHOD|
|Applicants:||PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
|Title:||SIGNATURE GENERATION SYSTEM, SIGNATURE GENERATION APPARATUS, AND SIGNATURE GENERATION METHOD|
A signature to be used to verify whether or not an original version video captured by a camera has been altered is assigned in the camera to improve the evidential quality of the original version video captured by the camera. The camera (2) includes: an image pickup unit that captures a video of an area to be monitored; a CPU that generates, using a portion or the entirety of video data of the area to be monitored captured by the image pickup unit, a signature for verifying whether or not the video data have been altered; and a network communication unit that sequentially transmits, to a client terminal (4), signed video data obtained by assigning the signature generated by the CPU to the video data. The client terminal (4) includes: a network communication unit that receives the signed video data that are sequentially transmitted from the network communication unit; a CPU that verifies whether or not the video data included in the signed video data received by the network communication unit have been altered; and a display (43) that outputs the result of the verification performed by the CPU.