What expression defines asymmetric encryption?

Asymmetric encryption is a type of encryption that uses a pair of keys: one public key for encryption and a corresponding private key for decryption. The expression that best defines asymmetric encryption is represented by C = E(k, p), where "C" denotes the ciphertext, "E" represents the encryption process, "k" symbolizes the public key used for encryption, and "p" signifies the plaintext message being encrypted.

In the context of asymmetric encryption, the public key can be shared with anyone who wishes to send secure messages to the key holder. Upon receiving the plaintext, the encryption algorithm processes it using the public key, resulting in the ciphertext, which can only be decrypted by the corresponding private key holder. This ensures confidentiality and secure communication, as only the holder of the private key can access the original plaintext from the ciphertext.

The other expressions noted do not accurately represent the function of asymmetric encryption. For instance, y2 = x3 + Ax + B is related to elliptic curves, which can be part of key exchange in asymmetric systems but does not define encryption itself. The expressions P = E(k, c) would denote decrypting the ciphertext with a key rather than defining encryption, while Me % n represents modular arithmetic, commonly used in