Answer:
(c) steganography
Explanation:
Steganography is a cryptographic concept used for describing data hidden in or within another data with the major purpose of avoiding detection. Any type of data can be hidden in another. The data could be an image, a text, a video or an audio file.
In steganography, two material media are involved: the message and the carrier. The message or data to be hidden is called the message while the data in which it is hidden is called the carrier.
Answer:
C. Steganography
Explanation:
Steganography refers to covering or hiding information or secret message.
This message is embedded or hidden in a file. This file can be an audio, a text file or an image or video file.
By hiding the messages and sending them this way protects the data and makes the existence of the hidden message undetectable.
It is different from cryptography because it does not change the meaning of the message, it just hides or covers it. The encrypted message can make an attacker suspicious that the real messages is encrypted but in steganography the existence of the secret data is hidden and hence cannot be easily detected.
For example embedding data in an image file like in digital pictures using steganography, encoding the message within an image pixels. This will not do major changes to the image but just changes the value of some of the pixels.
