A SIMPLIFIED AND EFFICIENT METHOD OF SECRET MESSAGE CRYPTOGRAPHY

A simplified method of secret message cryptography will be introduced, the method will apply messageencryption-decryption by using simple message blocking and message blocks rearrangement, and the methodwill eliminate the complex of logical and arithmetic operations used in other methods of data cryptography. Theproposed method will use a complicated private key; this key will provide a good key space capable to resisthacking attacks. The private key components will be used to divide the message into blocks and to run a chaoticlogistic map model to generate a chaotic key, which will be sorted to form the indices key required to rearrangethe message blocks, the produced outputs of the method will be very sensitive to the selected values of theprivate key components.The proposed method will be tested and implemented using various messages, the speed parameters will becalculated, and the speed results will be compared with other method speeds to show how the proposed methodwill decrease the encryption time and how it will speed up the process of message cryptography.The quality and sensitivity of the proposed method will be examined to show that the proposed method willsatisfy the requirements of good crypto method