How private public key encryption works

Question

i heard that in private key and public encryption first client1 encrypted data with private key and then send encrypted data to client2 and client2 decrypt data with public key which client1 send him.

i want to know how client2 encrypt data again for sending it to client1.

please tell me this story with a example. thanks

Nilesh Jadav · Answer

Private key cannot be shared publicly it is used with some secrecy that should not be revealed that's why we call private it is used by you and you only. I strongly suggest you to Refer Information security and specially the Asymmetric Cryptography. Also Further more you can read AES algorithm or RSA to better understand the approach. Hope that helps ! Mark my answer if the answer helps you !

Nilesh Jadav · Answer

Hey there ! What you are saying is Asymmetric key Cryptography where two keys are used as Public and Private Key hence encryption as well as the decryption can be done in any of the key just the difference is if you are using Public key for encryption than you have to use the Private key for decryption and vice versa. The keys are simply large numbers that have been paired together but are not identical (asymmetric). One key in the pair can be shared with everyone; it is called the public key. The other key in the pair is kept secret; it is called the private key. Either of the keys can be used to encrypt a message; the opposite key from the one used to encrypt the message is used for decryption. For more Clearance on the topic Refer Information Security by William Stallings Hope that helps !

tri_inn · Answer

with private and public key encryption any key can be used to encrypt and decrypt or if data is encrypt with public key then it will be decrypted by private key and same way if private key is used to encrypt data then public key can decrypt it? why private key is not shared in asymetric encryption ?