Description: Unidirectional authentication is a verification method in which only one of the parties involved in a communication is authenticated, while the other party does not require validation. This approach is commonly used in client-server models, where the client authenticates to the server, but the server does not need to authenticate the client. This type of authentication relies on public key infrastructure (PKI), which uses pairs of cryptographic keys: a public key and a private key. The public key is used to encrypt data or verify digital signatures, while the private key is kept secret and is used to decrypt data or digitally sign. Unidirectional authentication is essential for ensuring the integrity and confidentiality of transmitted information, as it allows the server to trust the identity of the client. However, this method has limitations, as it does not ensure the identity of the server, potentially leading to spoofing attacks. Despite its drawbacks, unidirectional authentication remains widely used in various applications, particularly in environments where server authentication is not critical or is complemented by other security measures.
