Symmetric Cryptography

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This is the simplest kind of Cryptography that involves only one secret key to encrypt and decrypt information. It is also known as “Secret Key Cryptography”.

Both Sender and receiver should know the key to be able to communicate securely.

For Example: if Mahesh & Shalini wants to communicate using symmetric-key cryptography then both would have to devise key and use it for every communication.

So Now, Mahesh encrypts his message using shared key, sends encrypted message to Shalini, then Shalini uses the same key again decrypt message to read.

To demonstration symmetric-key cryptography, I will use AES (Advanced Encryption Standard) & .Net Framework in-build library “System.Security.Cryptograph”

Output:



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