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-This paper has discussed the implementation of the Arnold's Cat Map method and the Logistic Map method in the encryption and decryption process for image sending security. In a previous study, an encryption process was carried out by using only the Arnold’s Cat Map method which gave results that the decryption process was still very easy to trace by repeating the iteration to get the original image. Therefore in this study the process of encryption and decryption used two methods, namely the Arnold’s Cat Map method and the Logistic Map method to ensure the security of image delivery. The implementation of the Arnold's Cat Map method and the logistic map method requires the computation time to depend on the number of iterations used during the encryption and decryption process, while the histogram test shows that the histogram results are perfect because the image distribution of the encrypted image is done evenly or more homogeneously. From the test, it was found that the correlation coefficient of the implementation of the arnold's cat map method and logistic method is close to zero, which means that all pixels have been randomized. In the key sensitivity test results obtained that with a difference of 0.00001 between the keys used when encryption and decryption will not be able to display the image according to the original sent. From the testing of data transmission it can be seen that the time needed for sending image data that has been through the encryption-decryption process is the same as the time of data transmission without going through the encryption process, which means that the additional time used is insignificant, that is only required for the encryption and decryption process. Keyword : Encryption, Arnold’s Cat Map Method, Logistic Map Method, Decryption

Implementasi Metode Arnold’s Cat Map dan Logistic Map Pada Proses Enkripsi-Dekripsi Untuk Keamanan Pengiriman Citra