Asymmetric encryption is a cryptographic method that uses a pair of keys - a public key and a private key - to secure data transmission. The public key is shared openly, allowing anyone to encrypt messages, but only the holder of the corresponding private key can decrypt them. This approach enables secure communication even between parties who have never met, as the private key remains confidential. Asymmetric encryption is widely used for securing emails, digital signatures, and establishing secure connections over the internet, such as with SSL/TLS protocols. Its security relies on complex mathematical problems, making unauthorized decryption extremely difficult.