Cryptography and Network Security

 Hi folks ! Hope you are doing great. In this blog study, we will going to discuss about hybrid cryptosystem. Hybrid  Cryptosystem  : A process when we combine symmetric as well as asymmetric cryptosystem together, the obtained system is called as a hybrid cryptosystem.  - In hybrid cryptosystem, a random secret key for symmetric cipher is generated and then encrypt this key via an asymmetric cipher using the receiver public key. - The message itself is then encrypted using the symmetric cipher and the secret key.  - Both the encrypted secret key and the encrypted message are then sent to the receiver.  - The receiver decrypts the secret key first, using his/her own private key, and then uses that key to decrypt the message.  What is the need of Hybrid Cryptosystem  : As we know that single symmetric as well as only asymmetric key encryption cannot provides full security in some specific area like when the key size is large and we need authenticat...