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ENCRYPTION DEVICE, ENCRYPTED TEXT CONVERSION DEVICE, ENCRYPTION PROGRAM, ENCRYPTED TEXT CONVERSION PROGRAM, ENCRYPTION METHOD, AND ENCRYPTED TEXT CONVERSION METHOD
ENCRYPTION DEVICE, ENCRYPTED TEXT CONVERSION DEVICE, ENCRYPTION PROGRAM, ENCRYPTED TEXT CONVERSION PROGRAM, ENCRYPTION METHOD, AND ENCRYPTED TEXT CONVERSION METHOD
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机译:加密设备,加密文本转换设备,加密程序,加密文本转换程序,加密方法和加密文本转换方法
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摘要
An encryption device (500) includes an encryption unit (504), a detection element generation unit (505), and a transmission unit (506). The encryption unit (504) encrypts a plain text by using one of a pair of keys to generate an encrypted text into which the plain text has been encrypted and which can be subjected to homomorphic computation. The detection element generation unit (505) generates a detection element E used to detect a change in the encrypted text by using the one key and the encrypted text. The transmission unit (506) transmits the encrypted text and the detection element.
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