Auth methods in http

Basic Authentication: This is the simplest form of HTTP authentication, where the client sends the username and password encoded in Base64 format in the Authorization header. For example:
makefile
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Authorization: Basic QWxhZGRpbjpvcGVuIHNlc2FtZQ==
Bearer Token: This is commonly used in token-based authentication schemes like OAuth 2.0. The client sends a token in the Authorization header prefixed with the word "Bearer". For example:
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Authorization: Bearer eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJzdWIiOiIxMjM0NTY3ODkwIiwibmFtZSI6IkpvaG4gRG9lIiwiaWF0IjoxNTE2MjM5MDIyfQ.SflKxwRJSMeKKF2QT4fwpMeJf36POk6yJV_adQssw5c
Digest Authentication: This is a more secure form of authentication compared to Basic Authentication. It involves a challenge-response mechanism where the client sends a hash of the username, password, and other request-specific information. For example:
sql
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Authorization: Digest username="user", realm="example", nonce="dcd98b7102dd2f0e8b11d0f600bfb0c093", uri="/", qop=auth, nc=00000001, cnonce="0a4f113b", response="6629fae49393a05397450978507c4ef1"
AWS Signature Version 4: This is used for authentication in Amazon Web Services (AWS) API requests. It involves signing the request with access key credentials. For example:
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Authorization: AWS4-HMAC-SHA256 Credential=AKIDEXAMPLE/20210525/us-east-1/s3/aws4_request, SignedHeaders=host;x-amz-content-sha256;x-amz-date, Signature=6d86bb16442e7d53834b7ed6dce825a8e7878cfb31dc9cd30c5b3dc5b858b3d8
These are just a few examples of authorization mechanisms used in HTTP headers. The choice of mechanism depends on the specific requirements of the application and the security standards being followed.