Description: Delegated authentication is a process where one entity allows another to authenticate on its behalf. This mechanism is fundamental in environments where security and efficiency are paramount, especially in the context of cloud computing and identity security. Instead of requiring each user to provide their credentials to access multiple services, delegated authentication allows a service to act on behalf of a user, using access tokens that validate their identity. This not only simplifies the user experience but also enhances security by reducing the exposure of credentials. Delegated authentication is based on standards like OAuth, which allows users to grant limited access to their data without sharing their passwords. This approach is particularly relevant in security architectures, where it is assumed that threats may be present both inside and outside the network, requiring continuous verification of identity and access. In summary, delegated authentication is a key component in identity and access management, facilitating a balance between usability and security in complex digital environments.
History: Delegated authentication began to gain relevance in the late 2000s with the adoption of protocols like OAuth, which was created in 2006 by a group of developers to allow third-party applications to access user information without compromising credentials. Since then, it has evolved and standardized, becoming an essential component in cloud identity management.
Uses: Delegated authentication is primarily used in web and mobile applications, where users need to access multiple services without having to repeatedly enter their credentials. It is also common in enterprise environments where third-party applications are integrated, allowing employees to securely access external tools.
Examples: An example of delegated authentication is the use of OAuth in applications like Google, where users can allow third-party applications to access their information without sharing their password. Another example is single sign-on (SSO) in organizations, where employees can access multiple applications with a single authentication.
