Combination of myszkowski transposition algorithm and modified least significant bit (mlsb) green channel on png image security

Abstract

On sending images via the internet, such as email, social media, and other are very vulnerable to technological crimes such as tapping, or modification. Without security guarantees, others can easily get messages sent over the internet. In this research, combined cryptographic algorithms and steganography. Cryptographic methods can ensure the security of data information by convering it into random codes, however making the data can't be read and understood by others. One of the cryptographic methods used by the author is the Myszkowski Transposition Algorithm. But the use of such encryption method does not always guarantee data security because the data is messy with other words can be regarded as unusual and suspicious. This algorithm also has the disadvantage that as complicated as any we do transposition or permutation on the characters in plaintext, we just do a randomization of the order of plaintext but we don't change it. So it must be combined with steganography technique that is using Modified Least Significant Bit (MLSB), so the message is not visible inserted visible. Therefore, if the information is on the wrong side will cause losses. The result of this study indicate that the Myszkowski Transposition algorithm and Green Channel Modified Least Significant Bit (MLSB) on PNG image coverage, can restore the image as before. So it can be concluded that the Myszkowski Transposition algorithm and Modified Least Significant Bit (MLSB) is capable of securing the message. Therefore, it can be concluded that the bigger the image size will be the longer the process.