Learning-and-recognition apparatus, learning-and- recognition method, and non-transitory computer readable medium

A learning-and-recognition method comprising:

• causing a processing time of learning-and-recognition processing on input data to be independent of the input data, as a countermeasure against a timing attack;
• and
• performing, using a neural network layer, learning-and-recognition processing on the input data and outputting output data,
• wherein processing is performed on the input data to change the processing time of the learning-and-recognition processing.

A non-transitory computer readable medium storing a learning-and-recognition program for causing a computer that executes learning-and-recognition processing using a neural network layer to:

• perform learning-and-recognition processing on input data;
• and
• cause a time period from an input time point of the input data to an output time point of output data to be independent of the input data, and output the output data, as a countermeasure against a timing attack,
• the learning-and-recognition program causing the computer to perform processing on the input data to change a processing time of the learning-and-recognition processing.