How Steganography Different from Cryptography?

In steganography, structure of data is not usually altered. While in cryptography, structure of data is altered. ... In steganography, the fact that a secret communication is taking place is hidden. While in cryptography only secret message is hidden.

Is steganography a cryptography?

Whereas cryptography is the practice of protecting the contents of a message alone, steganography is concerned with concealing the fact that a secret message is being sent and its contents. Steganography includes the concealment of information within computer files.

What is cryptography and steganography techniques?

Cryptography and steganography are the common methods to secure communications [2]. Cryptography is the science of using mathematics to encrypt and decrypt data to keep messages secured by transforming intelligible data form (plaintext) into unintelligible form (ciphertext).