Which of the following describes asymmetric encryption?

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Asymmetric encryption is characterized by the use of a public key and a private key to facilitate secure communication. In this method, the public key can be shared openly and is used for encrypting messages, while the private key is kept secret by the owner and is used for decrypting those messages. This dual-key approach allows for secure communication even if the encryption key is known to others, as only the holder of the private key can decrypt the message.

The other options do not accurately describe the nature of asymmetric encryption. The second choice refers to symmetric encryption, which uses a single key for both encryption and decryption. The third option mistakenly suggests that asymmetric encryption is less secure; in reality, it complements symmetric encryption by providing secure key exchange and authentication. Finally, the fourth option incorrectly limits the use of asymmetric encryption to physical storage devices; it is primarily utilized in secure communications over networks, such as in SSL/TLS protocols.

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