New approach toward data hiding by using affine cipher and least significant bit algorithm

Data security is not a top priority of most people at the moment. So the common misuse of the data and other security disturbances. To address the security disorder, can be used in the science of encryption data such as Cryptography and Steganography. The science of Cryptography use randomize or disguise the data, whereas the science of Steganography to hide data in a way. In this research the cryptographic algorithms used are Affine cipher Algorithm. Affine cipher algorithm requires a key that contains two integers, i.e. a and k. plaintext encryption process is transformed into ciphertext. Next do the embedding (concealment of data) on image Steganography techniques with the Least Significant Bit (LSB) and insert a message at the last bits of the image. It was needed extraction process to get the previous ciphertext. Then through the decryption stage to get the original plaintext. With a combination of Affine and LSB, data security will increase because after the message is scrambled into a ciphertext, the ciphertext will be inserted into the image file.