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The Web API Authentication guide, TLS Client Certificates

TLS mutual authentication doubles down on HTTPS. Using this scheme your clients' identity is proved by presenting certificates and proving ownership of a private key. This is a very potent tool and also a tradeoff.

The Web API Authentication guide, Signature Schemes

HTTP signature schemes provide integrity and authenticity on the application layer. Using them increase security but also incurs complexity.

The Web API Authentication guide, Bearer tokens

Lots of modern web application utilize bearer tokens. They are ideal for backend integration, but can also be used on the frontend.

The Web API Authentication guide, Cookies

Cookies are the de-facto authentication between browser and server. For a good reason, they can provide full-blown session management with low complexity.

The Web API Authentication guide, Digest Auth

HTTP Digest Authentication was designed to completely replace Basic Auth. It provides increased security at the cost of significant complexity…