To maintain the confidential data, a scheme or algorithm is needed to protect the data from
many attacks. Recently, many cryptography schemes and algorithms have been introduced …

Steganography is one of the most powerful techniques to conceal the existence of hidden
secret message inside a cover medium like image, video, audio, etc. An image is a suitable …

Nowadays, image information is routinely used in many applications. This paper presents
comparative study for image encryption based on Chaotic Logistic Map with external secret …