A hybrid encryption scheme is one that blends the convenience of an asymmetric encryption scheme with the effectiveness of a symmetric encryption scheme. Hybrid encryption is an approach to encoding and decoding data that blends the speed and convenience of a public asymmetric encryption scheme with the effectiveness of a private symmetric encryption scheme.

Hybrid encryption is used in all forms of internet communication between client and server these days. If Bob wants to send an encrypted message to Alice in a hybrid cryptosystem, for example, he might do the following: A hybrid encryption scheme consists of two parts, a public-key encryption part called KEM (key encapsulation mechanism) and a symmetric-key encryption part called DEM (data encapsulation mechanism). A hybrid encryption scheme itself is a public-key encryption scheme whose public key and secret key are the same as in the KEM. Hence, its security definitions are the same as those of public-key encrypted

Hybrid encryption is achieved through data transfer using unique session keys along with symmetrical encryption. Public key encryption is implemented for random symmetric key encryption. The recipient then uses the public key encryption method to decrypt the symmetric key. Once the symmetric key is recovered, it is then used to decrypt the message.

 

Working of Hybrid Cryptosystem: 

If Bob wants to send an encrypted message to Alice in a hybrid cryptosystem, for example, he might do the following: Hybrid encryption is achieved through data transfer using unique session keys along with symmetrical encryption. Public key encryption is implemented for random symmetric key encryption. The recipient then uses the public key encryption method to decrypt the symmetric key. Once the symmetric key is recovered, it is then used to decrypt the message.

Hybrid encryption is an approach to encoding and decoding data that blends the speed and convenience of a public asymmetric encryption scheme with the effectiveness of a private symmetric encryption scheme. The final form of encryption is hybrid encryption. A hybrid cryptosystem uses an asymmetric cipher to exchange a randomly generated key to encrypt the communications with a symmetric cipher. This offers the speed of a symmetric cipher while providing a secure key exchange.

In a hybrid encryption scheme, a public-key encryption technique is used to encrypt a key K (KEM part) and a symmetric-key encryption technique is used to encrypt the actual plaintext m with the key K (DEM part). A hybrid encryption scheme is one that blends the convenience of an asymmetric encryption scheme with the effectiveness of a symmetric encryption scheme.

Uses of Hybrid Cryptosystem in Ethical Hacking:

Hybrid encryption is an approach to encoding and decoding data that blends the speed and convenience of a public asymmetric encryption scheme with the effectiveness of a private symmetric encryption scheme. A hybrid encryption scheme is one that blends the convenience of an asymmetric encryption scheme with the effectiveness of a symmetric encryption scheme. 

Public key cryptography: In these two different keys such as a public key for encryption and a private key for decryption is used. Only the private key is kept a secret. Asymmetric encryption is a type of encryption that uses two separate yet mathematically related keys to encrypt and decrypt data. The public key encrypts data, while its corresponding private key decrypts it. This is why it’s also known as public-key encryption, public-key cryptography, and asymmetric key encryption.

Advantages:

• One is that an affiliation channel is spread out between two clients’ plans of stuff. 
• Clients at a point can pass on through hybrid encryption. Uneven encryption can tone down the encryption association, but with the simultaneous usage of symmetric encryption, the two sorts of encryption are moved along. 
• The result is the extra security of the correspondence communication close by better system execution, by and large.