Password authentication is a security mechanism used to verify the identity of a user or system by requiring a secret password, which must match a stored value to grant access. It is a fundamental aspect of cybersecurity, but its effectiveness relies heavily on the strength of the password and the security of the storage and transmission processes.
Single Sign-On (SSO) is an authentication process that allows a user to access multiple applications with one set of login credentials, enhancing user convenience while maintaining security. It reduces the risk of password fatigue and minimizes the potential for security breaches by centralizing the authentication process.
Token-based authentication is a security mechanism that allows users to verify their identity by exchanging a token, which is a digitally encoded string, instead of sending their credentials directly. This method enhances security by reducing the risk of exposing sensitive information and enables stateless, scalable authentication for web services and APIs.
Access tokens are digital credentials used to authenticate and authorize users or applications to access specific resources within a system, typically in the context of OAuth 2.0. They ensure secure communication by containing information about the permissions granted and are usually short-lived to minimize security risks.
The Digital Signature Algorithm (DSA) is a Federal Information Processing Standard for digital signatures, ensuring the authenticity and integrity of a message or document. It uses a combination of hashing and public-key cryptography to provide a secure method for verifying the sender's identity and the message's integrity without revealing the private key.