| 摘要 |
A data transfer system for transfer target object data from a data transmission apparatus to a data reception apparatus via transfer paths. The data transmission apparatus judges whether or not encrypting operation for the transfer object data is necessary on the basis of attributes of the transfer paths, encrypts the transfer object data when the encrypting operation for the transfer object data is judged to be necessary, and transmits either the transfer object data or the encrypted transfer object data via the transfer paths to the data reception apparatus. The data reception apparatus receives either the transfer object data or the encrypted transfer object data from the data transmission apparatus; judges whether or not decoding operation for the received transfer object data is necessary, and decodes the received transfer object data when the decoding operation for the received transfer object data is judged to be necessary.
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