Bit generation apparatus and bit generation method

A bit generation apparatus comprising:

• a glitch generation section that generates a glitch signal including a plurality of pulses;
• a filter section configured to include series-connected N semiconductor devices (N is an integer of two or more), a first semiconductor device to an N-th semiconductor device, the filter section inputting via the first semiconductor device the glitch signal generated by the glitch generation section, removing a pulse whose width is less than a predetermined pulse width, by allowing the inputted glitch signal to pass through the first semiconductor device to the N-th semiconductor device, and outputting via the N-th semiconductor device the glitch signal from which the pulse whose width is less than the predetermined pulse width has been removed;
• and
• a bit value generation section that inputs the glitch signal outputted by the filter section, and generates a bit value of 0 or 1 based on rising edges or falling edges of the plurality of pulses included in the inputted glitch signal.

A bit generation method performed by a bit generation apparatus including a glitch generation section, a filter section and a bit value generation section, the method comprising:

• by the glitch generation section,
• generating a glitch signal including a plurality of pulses;
• by the filter section configured to include series-connected N semiconductor devices (N is an integer of two or more), a first semiconductor device to an N-th semiconductor device,
• inputting via the first semiconductor device the glitch signal generated by the glitch generation section,
• removing the pulse whose width is less than a predetermined pulse width by allowing the inputted glitch signal to pass through the first semiconductor device to the N-th semiconductor device, and
• outputting via the N-th semiconductor device the glitch signal from which the pulse whose width is less than the predetermined pulse width has been removed;
• and
• by the bit value generation section,
• inputting the glitch signal outputted by the filter section, and
• generating a bit value of 0 or 1 based on rising edges or falling edges of the plurality of pulses included in the inputted glitch signal.