Module auth 

HTTP authentication header parsing.

Extracts credentials from Authorization headers for EST enrollment authentication. Supports:

• HTTP Basic (RFC 7617) – username:password for OTP validation
• Bearer token (RFC 6750) – OAuth2 / JWT tokens
• Negotiate (RFC 4559) – GSSAPI/Kerberos SPNEGO tokens
• Client certificate – extracted from TLS connection info

Structs

BasicChallenge

Builder for WWW-Authenticate: Basic challenge headers.

Enums

AuthCredential

Parsed credential from an HTTP Authorization header.

AuthError

Errors during authentication header parsing.

Constants

WWW_AUTHENTICATE_BASIC

Default WWW-Authenticate header value for HTTP Basic authentication.

Functions

client_cert_credential

Extract the subject DN from a client certificate.

parse_authorization

Parse an Authorization header value into a structured credential.