Copying machine with encryption function

Details Copying machine with encryption function Copying machine with encryption function

H - Electricity

04

N

H04N 1/44 (2006.01)

Patent

CA 2147641

Information is read from a medium such as paper in which information is written. The read information is enciphered. When encryption processing is performed, an encryption key is used. As the encryption key, an encryption key generated for each encryption is used, or an encryption key already generated is used again. The enciphered information is written into another medium such as paper. When decryption processing is performed, information is read from the medium in which the enciphered information is written. The read information is deciphered using as a decryption key the same key as the encryption key used when the encryption processing is performed. The deciphered information is written into another medium such as paper.

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