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Description: Calculate the NPCR between images
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Size: 2048 |
Author: houcem |
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Description: analysis of NPCR and UACI of Image
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Size: 3072 |
Author: amir12 |
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Description: 完整的图像加密算法以及对此算法加密结果的性能分析：像素之间相关性，图像的信息熵，以及NPCR,UACI-completely figure encryption scheme and corespond result analysis
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Size: 2048 |
Author: 曹纯 |
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Description: The number of changing pixel rate (NPCR) and the
unified averaged changed intensity (UACI) are two most common
quantities used to uate the strength of image encryption
algorithms/ciphers with respect to differential attacks.
Conventionally, a high NPCR/UACI score is usually interpreted
as a high resistance to differential attacks. However, it is not clear
how high NPCR/UACI is such that the image cipher indeed has a
high security level. In this paper, we approach this problem by
establishing a mathematical model for ideally encrypted images
and then derive expectations and variances of NPCR and UACI
under this model. Further, these theoretical values are used to
form statistical hypothesis NPCR and UACI tests.-The number of changing pixel rate (NPCR) and the
unified averaged changed intensity (UACI) are two most common
quantities used to uate the strength of image encryption
algorithms/ciphers with respect to differential attacks.
Conventionally, a high NPCR/UACI score is usually interpreted
as a high resistance to differential attacks. However, it is not clear
how high NPCR/UACI is such that the image cipher indeed has a
high security level. In this paper, we approach this problem by
establishing a mathematical model for ideally encrypted images
and then derive expectations and variances of NPCR and UACI
under this model. Further, these theoretical values are used to
form statistical hypothesis NPCR and UACI tests.
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Size: 604160 |
Author: michael |
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Description: 计算图像处理中的评价指标NPCR和UACI(Calculate the evaluation indexes NPCR and UACI)
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Size: 3072 |
Author: 棠潮 |
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Description: 计算图像处理中的评价指标NPCR和UACI，这两个指标用于表示图像的抗差分攻击能力。(The evaluation indexes NPCR and UACI in image processing are calculated.)
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Size: 10240 |
Author: MATXYJ |
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Description: NPCR and UNCI of image
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Size: 3565568 |
Author: 123金色阳光 |
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