Method and test circuit for preventing data encryption algorithm (DES) attack based on power analysis
A power consumption analysis and algorithm technology, applied in the direction of encryption devices with shift registers/memory, etc., can solve the problems of increasing complexity and achieve the effect of ensuring security
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 Below in conjunction with specific embodiment, further illustrate the present invention, should be understood that these embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.
 In order to overcome the potential safety hazard caused by using the same mask between two rounds of traditional symmetric encryption, the present invention proposes a method for preventing DES algorithm attacks based on power analysis. The code value and position are different from other rounds, which makes it impossible to eliminate the effect of the mask when using the Hamming distance model. The specific process of this program is as follows figure 1 Shown, where X is a random number, ...
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