Patent ID: 7984307

Claim:
A data transmission apparatus comprising: an input unit configured to input data; an encryption unit configured to encrypt the data input by said input unit; a storage unit configured to store the data input by said input unit, together with destination information after the data is encrypted by said encryption unit or without encrypting the data; a transmission unit configured to transmit the data stored in said storage unit, in accordance with the destination information; a selection unit configured to select one of the data stored in said storage unit; a determination unit configured to determine whether or not the data selected by said selection unit is encrypted; and a control unit configured to, based on a result of the determination by said determination unit, permit a change of the destination information of the data selected by said selection unit, if it is determined that the data selected by selection unit is encrypted, and restrict the change of the destination information of the data selected by said selection unit, but to permit the transmission of the data selected by said selection unit unless the destination information is changed, if it is determined that the data selected by said selection unit is not encrypted.