GSSAP stands for “Generic Security Services Application Program Interface.” It is an interface that allows developers to implement security services in network applications, providing a framework for authentication, confidentiality, and data integrity. GSSAP is commonly used in scenarios requiring secure communication between clients and servers across a network. It supports various underlying security mechanisms, enabling interoperability among different security protocols. This allows applications to utilize different authentication methods (like Kerberos) without needing to re-implement the authentication logic, thus promoting security and code reusability.