Patent ID: 8375074
Filing Date: 2013-02-12
Classification: G06F,H04L

Abstract:
1. A terminal coupled to an object, comprising: a data acquisition unit for acquiring data of the object, as a packet; a counter unit for counting a number of packets obtained by the data acquisition unit; an extraction unit for obtaining a data value indicating an operation status of the object by extracting a bit string from the packet, and converting the bit string to the data value; a random number generation unit for generating a random number by selecting one of the number of packets counted by the counter unit and the data value obtained by the extraction unit as a seed; an enciphering unit for enciphering the packet by using the random number; and a reference table including a type and identifier of the packet, a start point and length of the bit string, and a conversion formula used for converting the bit string to the data value, wherein: the extraction unit extracts the bit string by referring to the identifier, the start point and the length, and converts the bit string with the conversion formula.