Basic authentication is a simple authentication scheme built into the HTTP Protocol. The client sends HTTP requests with the Authorization header that contains the word Basic word followed by a space and a base64-encoded string username:password. For example, to authorize as demo /p@55w0rd the client would send.

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Authorization: Basic ZGVtbzpwQDU1dzByZA==

Note: Because base64 is easily decoded, Basic authentication should only be used together with other security mechanisms such as HTTPS/SSL.

Describing Basic Authentication