What is cryptography, Computer Networking

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The science and art of manipulating messages in order to create them secure is known as cryptography.....

Two types are:-

Symmetric key cryptography and Asymmetric key cryptography

1) symmetric key cryptography similar key is used for encryption and decryption eg :DES IDEA AES

2) Asymmetric key: public key is used for both encryption and decryption eg: RSA Difere Hellman

 

 


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