Basic Terminology of Network Security | Basic terms in cryptography | Network Security basic terms

Data Security: It is the science and study of methods of protecting data from unauthorized person. Ex. Protect digital data from computer system/cell phone etc...

Network Security: Measure to protect data during their transmission.

Internet Security: Measure to protect data during their transmission over an interconnected network.

Cryptography: Cryptography is associated with the process of converting plain text into unreadable text and vice-versa.

Plain Text:  Original message is called Plain text. Ex. I am an Indian

Cipher Text: Plain text convert into unreadable format is called cipher text. Ex. I am an Indian ⇒ a**0##<8up@

Encryption: Process of converting plain text to cipher text.

Decryption: Process of converting cipher text to plain text. (May be or may not be reverse of encryption)

Cryptographic Key (Key): A cryptographic key is a string of bits (secret information) used by a cryptographic algorithm to transform plain text into cipher text or vice versa.

Cryptanalysis: The method of transforming cipher text back into plain text without knowledge of the key. (Code – breaking).

Cryptology: Cryptology means cryptography and cryptanalysis.

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