On the Applicability of the Chi-Square Statistic in the Problem of Determining the Parameters of Block Encryption Algorithms

Key Points

• The aim is to explore the effectiveness of statistical methods in determining parameters of block encryption algorithms.
• Analyzed block encryption algorithms operating in ECB mode.
• Examined cases of incorrect plaintext encryption application.
• Utilized chi-square statistics computed from ciphertext volume.
• Demonstrates the feasibility of determining block size using statistical methods.
• Provides insights into the potential misuses of encryption algorithms.