عدم کارایی ضریب همبستگی پیرسن برای سنجش امنیت رمز نگاری تصویر

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانشگاه دامغان

2 دانشگاه علم و صنعت

چکیده

در این مقاله عدم کارایی ضریب همبستگی پیرسن برای تحلیل ارتباط بین یک تصویر و تصویر رمز‌شده آن نشان داده شد. همچنین ضریب اطلاع به‌عنوان جایگزین مناسب برای ضریب همبستگی پیرسن مورد بررسی قرار گرفته شد. هر چند این ضعف مستقل از سامانه رمز استفاده‌شده در رمزنگاری تصویر می‌باشد، ولی دو الگوریتم رمز AES اصلاح‌شده و رمز جریانی W7 برای محاسبات آزمایشگاهی استفاده و همچنین با بررسی کمی و کیفی استانداردهای دیگر تحلیل رمزنگاری تصویر نشان داده می‌شود که ضریب اطلاع در مقایسه با ضریب همبستگی پیرسن نقاط قوت و ضعف الگوریتم‌های رمزنگاری تصویر را بهتر نشان می‌دهد.

کلیدواژه‌ها


عنوان مقاله [English]

Non-Performance of Pearson Correlation Coefficient for Evaluating Image Encryption Security

نویسندگان [English]

  • Majid Farhadi 1
  • Javad Ghasemian 1
  • Hossein Sabzehparvar 2
1
2
چکیده [English]

In this paper, we described Pearson's correlation coefficient inefficiency for analyzing the relationship between an image and encrypted one. Also, the information index was investigated as a suitable substitute for Pearson correlation coefficient. This weakness is independent of the encryption system of the image en-cryption; however, two encryption algorithms such as modified AES and W7 stream cipher have been used for laboratory calculations. In addition, by quantitative and qualitative examination of other standards for encryption analyzing of the image, the information index, in comparison with the Pearson correlation coef-ficient, shows the strengths and weaknesses of the image encryption algorithms better.

کلیدواژه‌ها [English]

  • Cryptography
  • Image Encryption
  • Pearson Correlation Coefficient
  • Entropy
  • Information Index
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