In modern society, cryptographic algorithms that guarantee the integrity of data have been used in various fields while being secured through various research. However, since the encryption algorithms are mostly used in the computer environment, there is a difference in the amount of leakage current depending on all calculation results. A power analysis attack is a method that utilizes a difference in leakage current and is effective in attack of a cryptographic algorithm. Therefore, we propose the structure of AES encryption algorithm to cope with power analysis attack by randomizing input using scrambler so that attacker cannot input arbitrary initial value and secret key.
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