What is Symmetric Key Cryptography | Elements of symmetric key cryptography | Symmetric cipher model

What is Symmetric Key Cryptography | Elements of symmetric key cryptography | Symmetric cipher model in network security

In this video, I have explained symmetric key cryptoghraphy (symmetric cipher model in network security) concepts in network security and also explained elements (ingredients) of symmetric key cryptography.
Same key is used for encryption and decryption is called symmetric key cryptography. It is also known as secret key cryptography.
Plaintext is the original message or data that is fed into the algorithm as input. Encryption algorithm performs various substitutions and transformations on the plaintext. Secret key is a value independent of the plaintext and of the algorithm. The exact substitutions and transformations performed by the algorithm depend on the key. Ciphertext is the unreadable message produced as output. It depends on the plain text and secret key. Decryption algorithm takes the cipher text and the secret key and produces the original plain text.

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