Public Key Cryptography

Public Key Cryptography (PKC) is a significant aspect of modern cryptography that enables secure communication and data protection. It's built upon mathematical principles and plays a vital role in various applications, including online banking, digital signatures, and blockchain technology.

Understanding Public Key Cryptography

PKC utilizes a pair of mathematically linked keys: a public key and a private key. The public key is shared openly, while the private key remains confidential. The remarkable aspect of PKC is that a message encrypted with the public key can only be decrypted using the corresponding private key, and vice versa.

How PKC Works

1. Key Generation: A pair of keys is generated, with one designated as the public key and the other as the private key.
2. Encryption: To send a secure message, the sender encrypts it using the recipient's public key. The encrypted message is now unreadable to anyone except the recipient.
3. Decryption: Once the recipient receives the encrypted message, they use their private key to decrypt it. The message is now accessible only to the intended recipient.

Applications of Public Key Cryptography

PKC finds extensive use in various applications: