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In this paper, we propose an improved RC6 encryption algorithm that have the same structure of encryption and decryption. So far, conventional RC6 algorithms have difference structure of encryption and decryption. We devise our algorithm by inserting a symmetric layer using simple rotation and XOR operations, in which the half of whole RC6 rounds uses encryption procedure and the rest of it are employs...
In this paper proposed a new secret-key block cipher method, in the proposed method, the plaintext and the ciphertext are 33152 bit blocks or multiple of 33152. The ciphertext are 33152 bit blocks or multiple of 33152. The secret key is dynamic key with 33152 bit long or multiple of 33152. The proposed method is combine of RSA, DES, TowFish, Caesar and Reversed ciphers.
This paper introduces a new (t, n) secret sharing scheme for image encryption. The proposed method encrypts the secret image into two images as the same size of the original image, which one is the public image (called the encrypted image) and another is to be shared among n participants using a new secret sharing method based on the Shamir’s secret sharing. In the new secret sharing scheme, t (or...
This paper is aimed at the image encryption scheme applicable to JPEG2000 codec. Firstly, two chaotic maps are suggested and their statistic characteristics are also analyzed. Secondly, to accomplish a controllable visual effect of encrypted image, a visual quality control model is presented, and on the basis of which, a chaotic image encryption scheme is constructed by chaotically modulating the...
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