The video encryption device is equipped with an encryption data extraction unit (1031) that selects, from among a plurality of coded macroblocks in which all of a plurality of macroblocks forming a single frame displaying a single picture have been coded, a coded macroblock corresponding to the aforementioned macroblock that is positioned in a specific position within the aforementioned single frame, as data to be encrypted (207A); and an encryption processing unit (1032) that encrypts the data to be encrypted (207A) that was selected by the encryption data extraction unit (1031) and outputs the data as encrypted data (207B).
その 一方 で 、 一般 市民 や 在野 の 研究 者 の 中 に は 熱心な 支持 者 が 存在 する 。patents-wipo patents-wipo