A fast double-keyed authenticated image encryption scheme using an improved chaotic map and a butterfly-like structure

Authenticated image encryption is crucial in handling top-secret images. To ensure confidentiality, authenticated encryption supplies legal validity for the image data. We propose a novel modified logistic map with an expanded key space, an integer-based key generation algorithm and an authenticated...

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Bibliographic Details
Published in:Nonlinear dynamics 2019, Vol.95 (1), p.421-432
Main Authors: Hanis, Stanley, Amutha, Ramachandran
Format: Article
Language:English
Subjects:
Algorithms
Automotive Engineering
Classical Mechanics
Control
Data encryption
Dynamical Systems
Encryption
Engineering
Entropy
Image detection
Mechanical Engineering
Original Paper
Performance evaluation
Vibration
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Summary:Authenticated image encryption is crucial in handling top-secret images. To ensure confidentiality, authenticated encryption supplies legal validity for the image data. We propose a novel modified logistic map with an expanded key space, an integer-based key generation algorithm and an authenticated image encryption algorithm for block ciphers using a modified logistic map and a butterfly-like structure. The key that is used to encrypt images also aids in detecting content tampering of the images. The performance evaluations demonstrate that the proposed encryption method is fast and invulnerable to attacks and has a large key space. Additionally, the designed algorithm can assess the credibility of the data. Moreover, eight keys are used in decryption compared to four in encryption, which strengthens the security. Therefore, this algorithm can be used in real-time scenarios.
ISSN:0924-090X
1573-269X
DOI:10.1007/s11071-018-4573-7