Can we use the NPCR and UACI to test the robustness of audio encryption against differential attacks? What is the range of these two for a good encryption system?
Dear Minati Mishra,
You may want to review the following materials:
https://www.researchgate.net/publication/280595954_Chaos-based_crypto_and_joint_crypto-compression_systems_for_images_and_videos/figures?lo=1
Dear Minati Mishra,
Here below are some auxiliary data:
www.researchgate.net/publication/259190481_NPCR_and_UACI_Randomness_Tests_for_Image_Encryption
What is NPCR and UACI?
NPCR means the change rate of the number of pixels of the cipher image when only one pixel of the plain image is modified. The unified average changing intensity (UACI) measures the average intensity of differences between the plain image and ciphered image
What is UACI?
Abstract. The number of changing pixel rate (NPCR) and the unified averaged changed intensity (UACI) are two most common quantities used to evaluate the strength of image encryption algorithms/ciphers with respect to differential attacks.
Which algorithm is used for encryption and decryption?
Advanced Encryption Standards (AES) The Advanced Encryption Standard (AES) is the algorithm trusted as the standard by the U.S. government and many other organizations. Although it is extremely efficient in 128-bit form, AES encryption also uses keys of 192 and 256 bits for heavy-duty encryption.
Which of the following is are advantages of the chaotic map based encryption?
There are many researchers, which noticed that there is a tight relationship between cryptography and chaos and several characteristics of chaotic systems have their corresponding similarity in traditional cryptosystems The advantages of chaotic based image encryption scheme are easy to implement, faster encryption ...
A new image encryption algorithm based on the OF-LSTMS and chaotic sequences:
https:///www.nature.com/articles/s41598-021-85377-1
Use either UACI or NPCR, depending on the situation and circumstances. UACI is some time gave better performance and sometimes NPCR gives a better performance so you can use both cases that can vary according to time and situations. You should focus mainly on the time and space for this computation.
Yes they can be used for audio data I believe, with some adjustments. The following video explains these tests, with code available in the description https://www.youtube.com/watch?v=M16KViUjjlI
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