Five strategies ensure secure REST API authentication

REST APIs require secure authentication to protect sensitive data. Five fundamental strategies include Basic authentication, API keys, HMAC encryption, OAuth 2.0, and OpenID Connect. Each method has unique benefits and complexities that organizations must consider. Basic authentication encodes usernames and passwords but lacks support for multifactor authentication. API keys offer machine-generated credentials but are vulnerable to interception. HMAC ensures data integrity but can be challenging to manage securely. OAuth 2.0 is a preferred choice for complex applications, allowing dynamic user permissions and secure token management. OpenID Connect simplifies user identity validation across applications. New methods like one-time passwords, magic links, and passkeys are gaining traction for enhanced security.