Difference between Steganography and Cryptography

Question

Difference between Steganography and Cryptography

File SystemComputersData Structure

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Steganography

Steganography, or cover writing, is a method where a secret method is converted into fake looking message. This technique helps to keep a message secret. It is pretty difficult to use and understand. Structure of data remains unaltered in Steganography. It is used in text, audio, video or images.

Cryptography

Cryptography or secret writing, is a method where a secret method is converted in cipher text and sent to other person who then decrypt the cipher text into plain text. Cryptography can be classified as Symmetric key cryptography or Asymmetric key cryptography.

Following are some of the important differences between Steganography and Cryptography.

Sr. No.	Key	Steganography	Cryptography
1	Type	Steganography refers to Cover Writing.	Cryptography refers to Secret Writing.
2	Popularity	Steganography is less popular than Cryptography.	Cryptography is more popular than Steganography.
3	Integrity	Structure of data remains same.	Structure of data can be altered.
4	Attack	Attack in Steganography is termed as Steganalysis.	Attack in Cryptography is termed as Cryptanalysis.
5	Security Principles	Steganography supports Confidentiality and Authentication.	Cryptography supports Confidentiality, Authentication, Data integrity and Non-repudiation.
6	Parameter	Steganography requires a parameter like key.	Cryptography may not need any key.

Mahesh Parahar

Published on 15-Apr-2020 10:30:35

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