An apparatus for generating a digital value, and a method therefor are proposed. The apparatus for generating the digital value includes: a data generation part configured to randomly generate a first digital value; a data preservation part configured to store the first digital value; and a data concealment part configured to generate a final digital value by synthesizing the first digital value and a second digital value outputted from a volatile element. Accordingly, there is an effect that randomness of the final digital value is confirmable, and the final digital value is not leaked to outside.