الفهرس 
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Abstract
The extensive usage of the internet has given its users the ability to send and receive information from any entities connected to the internet anywhere in the world. Day by day, securing the transmitted data become essential. To Keep the unauthorized user away, a variety of techniques has been proposed, Cryptography and steganography are two main methods in data security. Cryptography is data encryptions that use a certain algorithm to transform data into ciphertext. Although cryptography is a strong technique to secure data, it has some weaknesses as the ciphertext is still visible to unauthorized users, leading to the desire to recover them. Steganography is data embedding that conceals the secret data as text, audio, image and video-in another cover data.