Enhancing Image Security in IoT Environments Using a Modified Vigenère Cipher Algorithm
DOI:
https://doi.org/10.62760/iteecs.5.1.2026.141Keywords:
Internet of Things, Image Encryption, Vigenère Cipher, Multimedia Security, Symmetric Key Cryptography, Privacy ProtectionAbstract
The Internet of Things (IoT) represents a technologically optimistic future where objects will be connected to the internet and make intelligent collaborations with other objects anywhere, anytime. The described technical architecture of the IoT has an impact on the security and privacy of the involved stakeholders. Privacy includes the concealment of personal information as well as the ability to control what happens with this information. By security we mean the degree of resistance to, or protection of the IoT infrastructure and applications. Many of these devices are easy targets for intrusion. The IoT enables the exchange of multimedia data in a wide variety of applications. Therefor Ensuring confidentiality and privacy is critical when it comes to sharing images over unsecured networks. The security of multimedia data in digital distribution networks is commonly provided by encryption, which is the mathematical process that transforms a plaintext message into unintelligible ciphertext (confused). Vigenère cipher algorithm method is used for securing data in the form of digital images; this paper proposes a method to encrypt an image based on one of the primitive text encryption algorithms Vigenère Cipher. The results show that the original Vigenère algorithm is not good and not suitable for image encryption. On the other hand the proposed algorithm shows there are improvements in the process of encoding images (black / white and color images) using a symmetric key, same key is used for both encryption and decryption.
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