Cryptography of a Gray Level Image using a Modified Feistel Cipher

Dr. V. Umakanta Sastry, D. S. R. Murthy, Dr. S. Durga Bhavani


In this paper, we have made use of a modified Feistel cipher for encrypting a Gray level image. This image is represented in the form
of a square matrix of size 256. The encryption is carried out by considering, at each instance, a matrix of size 32 x 64. Here, as the cipher is an
elegant one, we notice that the time required for computation is much less.


Keywords: Feistel Cipher, Gray level Image, Encryption, Decryption and Encrypted Image.

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