A technique of enciphering the graph-text document and its security transfer on a network. The sender of the graph-text document enciphers at least one graph-text document with digitizing algorithm provided by a control center and producing an enciphered and compressed cryptic document. Sender sends this enciphered cryptic document to a recipient, who prints out the enciphered graph-text document. The control center sends the positioning parameters of a reader sheet, the coordinates of the pole and the polar angle, to the recipient, who puts the reader sheet onto the document sheet at the right position and right orientation as indicated by the parameters received. The original document thus is revealed as a four dimensional (four parametric) document and is ready to be read.