In this study, several prominent symmetric encryption algorithms, including AES, Blowfish, DES, 3DES, and RC4, were applied to encrypt breast ultrasound images. These algorithms were further compared with RSA, a representative asymmetric encryption method. Three different breast ultrasound images, categorized as benign tumor, malignant tumor, and normal tissue, were used in the encryption process. Each image was provided in two file formats (PNG and BMP) and at two resolutions (256 × 256 and 512 × 512 pixels). The performance of the algorithms was evaluated using metrics such as the Number of Pixel Change Rate (NPCR), Unified Average Changing Intensity (UACI), histogram analysis, and encryption and decryption times. The experimental results demonstrated that symmetric encryption algorithms were more efficient than their asymmetric counterpart. Additionally, a comparative analysis of the symmetric algorithms was conducted, along with a discussion of their relative performance.
encryption symmetric encryption algorithms asymmetric encryption algorithms breast ultrasound images comparison of encryption algorithms
| Primary Language | English |
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| Subjects | Computer Software |
| Journal Section | Research Article |
| Authors | |
| Submission Date | May 20, 2025 |
| Acceptance Date | September 13, 2025 |
| Publication Date | December 25, 2025 |
| Published in Issue | Year 2025 Volume: 9 Issue: 3 |