E2E Authentication in XMPP (XEP-EAX) describes how X.509 certificates can be used for end-to-end (e2e) authentication in XMPP. As in any PKIX based authentication, a certificate authority (CA) plays a major role in e2e authentication. This document specifies requirements for certificate authorities issuing certificates for the purpose of e2e authentication in XMPP. In addition, a special role of the XSF is outlined.
The following rules apply to any CA:
The following rules apply to domain-associated CAs:
The following rules apply to root CAs:
Failing to follow the above rules MAY lead to certificate revocation by either appending the intermediate certificate to the parent's Certificate Revocation List or by removing the root certificate from the listing of the XSF.
The XSF acts as an entry point for the Overlay Configuration. In accordance with Section 11.2 of RFC6940, to provide such an entry point, the following requirements are applied to the XSF:
Since the location of the Overlay Configuration document is defined in this specification, the XSF doesn't need to maintain SRV DNS entries for a Service name of "reload-config".
It is expected that modifications of the list of root CA URLs will be rarely needed. Also, maintaining URL redirections is a relatively simple task. Thus operational costs for the XSF are expected to be low.
Refer to Glossary sections of XEP-EAX and XEP-XOR.
TODO: describe interaction between the XMPP Board and representatives of the root CAs.
This specification requires to maintain an HTTP server. A standard practice should be used to protect the HTTP server from security threats.
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The Extensible Messaging and Presence Protocol (XMPP) is defined in the XMPP Core (RFC 6120) and XMPP IM (RFC 6121) specifications contributed by the XMPP Standards Foundation to the Internet Standards Process, which is managed by the Internet Engineering Task Force in accordance with RFC 2026. Any protocol defined in this document has been developed outside the Internet Standards Process and is to be understood as an extension to XMPP rather than as an evolution, development, or modification of XMPP itself.
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The following requirements keywords as used in this document are to be interpreted as described in RFC 2119: "MUST", "SHALL", "REQUIRED"; "MUST NOT", "SHALL NOT"; "SHOULD", "RECOMMENDED"; "SHOULD NOT", "NOT RECOMMENDED"; "MAY", "OPTIONAL".
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