Internal Re-keying Based Modified AES

• DOI: 10.17485/ijst/v18i1.2012
• Publication Date: 2025-01-22T16:24:40Z
• Authors: Amit Rathod; Kajal Patel

Objectives: Masking and re-keying are two major countermeasures against the Power Side Channel Analysis attacks. Re-keying has either secret sharing overhead or needs to be used in synchronization. The Advanced Encryption System (AES) been modified proposed scheme uses without need for random synchronized communication. research a AES validated its effectiveness with AES. Methods: This study proposes modifying then implementing it as software encryption using Python. As modified, should also match strength further Attack. Avalanche parameter is check solution strength. A data set of 10000, 50000, 100000 records were generated test avalanche effect. existing compared. Findings: results indicate that effect both remains equivalent supplied dataset. To analyze further, distribution analyzed randomness checked Shannon entropy found provides 0.5% more Hence, fulfills benchmark criteria Novelty: algorithm part plain text generate round key making resultant unique can re-generated from ciphertext original schedule on decryption side, not needed. Keywords: Masking, Random Sharing Overhead, Differential (DPA), AES, Effect,