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Identity Protocols
Record Keeping
- Lightweight Directory Access Protocol (LDAP)
- Domain Name Service (DNS)
Authentication
Used to verify a user
- Simple Authentication and Security Layer (SASL):
- SASL is an authentication protocol base for Apache. For example, mod_authz_ldap authentication method queries LDAP for credentials and verifies against it.
- Security Assertion Markup Language (SAML)
Authorization
Used to authorize a user. (e.g. Any user regardless of who it is may be able to do something if they are authorized)
- OAuth 2.0
Authentication and Authorization
- OpenID Connect
Note
OpenID Uses JWT.
Also, Gitea's Demo allows entering custom OpenID URI.
Gitea also claims to have WebAuthn, but I haven't seen it in practice.