COMPUTER FUNDAMENTALS

Detailed explanation-1: -Encryption is the method by which information is converted into secret code that hides the information’s true meaning. The science of encrypting and decrypting information is called cryptography.

Detailed explanation-2: -Steganography can be used for digital watermarking in which a message (being simply an identifier) is hidden in an image so that its source can be tracked or verified (for example, Coded Anti-Piracy) or even just to identify an image (as in the EURion constellation).

Detailed explanation-3: -Steganography is the technique of hiding secret data within an ordinary, non-secret, file or message in order to avoid detection; the secret data is then extracted at its destination. The use of steganography can be combined with encryption as an extra step for hiding or protecting data.

Detailed explanation-4: -Cryptography was developed in order to keep the message secret, by encrypting and decrypting the message, but sometimes, just hiding the contents of message is not enough, but it might be required to hide the existence of the message too [7, 8]. One such technique that uses hidden communication is called steganography.

Detailed explanation-5: -Data encryption translates data into another form, or code, so that only people with access to a secret key (formally called a decryption key) or password can read it. Encrypted data is commonly referred to as ciphertext, while unencrypted data is called plaintext.