Explain the main idea and mechanism of asymmetric data encryption.

Asymmetric encryption uses a pair of keys: a public key and a private key. The public key is accessible to everyone and is used for encrypting data, while the private key is kept secret and used for decrypting it. This allows secure transmission of information without prior exchange of a secret key.

Example of the mechanism:

• The sender encrypts the message using the recipient's public key.
• The recipient decrypts the message with their private key.

This approach ensures confidentiality and authentication, as only the owner of the private key can read the message.