A Key Server is a system that manages cryptographic keys used in various applications, including digital wallets and secure communications. It plays a crucial role in ensuring that users can generate, store, and retrieve their private and public keys safely.When a user creates a cryptocurrency wallet, a pair of keys is generated: a private key for signing transactions and a public key for receiving funds. The Key Server can assist in key generation, and in some setups, it can securely store the private keys to enhance protection against loss or theft.Key Servers often incorporate features such as key recovery, which allows users to regain access to their keys if lost, and key sharing, which can enable multi-signature transactions requiring multiple approvals. By centralizing key management, a Key Server can provide a more user-friendly experience but also introduces potential risks since a centralized system could be targeted by attackers. Therefore, careful consideration must be given to the security measures implemented by a Key Server.