| 摘要 |
<P>PROBLEM TO BE SOLVED: To expand a frame of a conversion target into the whole unicast frames while complying to a plurality of conversion systems, and to avoid an increase in hardware. <P>SOLUTION: A signal processor 1 includes: a classification information generating function section 6, which receives a frame received by the signal processor 1 from the outside or a frame generated in the signal processor 1, generates classification information that indicates whether or not the frame is required to check a value of a specified field, and outputs the frame with addition of the classification information; a conversion on/off determining function section 7, which generates a conversion process on/off designation information that indicates the frame to be or not to be a frame of conversion target, on the basis of the classification information and the value of the field as a target for checking in the frame, and outputs the frame with addition of the conversion process on/off designation information; and an encryption processing circuit 5, which encrypts the whole or a part of the frame on the basis of the conversion on/off designation information. <P>COPYRIGHT: (C)2013,JPO&INPIT |
