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.. _authentication_mechanisms:
=========================
Authentication Mechanisms
=========================
Mechanisms
==========
ANONYMOUS
---------
.. todo::
Content needed here
CRAM-MD5
--------
.. todo::
Content needed here
DIGEST-MD5
----------
.. todo::
Content needed here
EXTERNAL
--------
.. todo::
Content needed here
G2
-----
.. todo::
Content needed here
GSSAPI
------
Not sure how to get GSSAPI going? Check out our :ref:`GSSAPI configuration guide <gssapi>`.
.. todo::
Content needed here
GSS-SPEGNO
----------
.. todo::
Content needed here
KERBEROS_V4
-----------
.. todo::
Content needed here
LOGIN
-----
.. todo::
Content needed here
NTLM
----
.. todo::
Content needed here
OTP
---
* OTP-MD4
* OTP-MD5
* OTP-SHA1
.. todo::
Content needed here
PASSDSS
-------
* PASSDSS-3DES-1
.. todo::
Content needed here
PLAIN
-----
.. todo::
Content needed here
SCRAM
-----
* SCRAM-SHA-1
* SCRAM-SHA-256
.. todo::
Content needed here
SRP
---
* mda=sha1,rmd160,md5
* confidentiality=des-ofb,des-ede-ofb,aes-128-ofb,bf-ofb,cast5-ofb,idea-ofb
.. todo::
Content needed here
Non-SASL Authentication
-----------------------
.. todo::
Content needed here
----
Summary
=======
This table shows what security flags and features are supported by each
of the mechanisms provided by the Cyrus SASL Library.
+-------------+---------+----------------------------------------------------------------+-----------------------------------------------------------+
| | MAX SSF | SECURITY PROPERTIES | FEATURES |
+-------------+ +----------------------------------------------------------------+-----------------------------------------------------------+
| | | NOPLAIN | NOACTIVE | NODICT | FORWARD | NOANON | CRED | MUTUAL | CLT FIRST | SRV FIRST | SRV LAST | PROXY | BIND | HTTP |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| ANONYMOUS | 0 | X | | | | | | | X | | | | | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| CRAM-MD5 | 0 | X | | | | X | | | | X | | | | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| DIGEST-MD5 | 128 | X | | | | X | | X | reauth | initial auth | X | X | | X |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| EXTERNAL | 0 | X | | X | | X | | | X | | | X | | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| G2 | 56 | X | X | | | X | | X | X | | X | X | X | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| GSSAPI | 56 | X | X | | | X | X | X | X | | | X | | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| GSS-SPNEGO | 56 | X | X | | | X | X | X | X | | | X | | X |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| KERBEROS_V4 | 56 | X | X | | | X | | X | | X | | X | | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| LOGIN | 0 | | | | | X | X | | | X | | | | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| NTLM | 0 | X | | | | X | | | X | | | | | X |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| OTP | 0 | X | | | X | X | | | X | | | X | | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| PASSDSS | 112 | X | X | X | X | X | X | X | X | | | X | | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| PLAIN | 0 | | | | | X | X | | X | | | X | | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| SCRAM | 0 | X | X | | | X | | X | X | | X | X | X | ? |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
| SRP | 128 | X | X | X | X | X | | X | X | | X | X | | |
+-------------+---------+---------+----------+--------+---------+--------+------+--------+-----------+--------------+----------+-------+------+------+
.. Helpfully generated from http://www.tablesgenerator.com/text_tables#
Understanding this table:
Security Properties:
* **MAX SSF** - The maximum Security Strength Factor supported by the mechanism (roughly the number of bits of encryption provided, but may have other meanings, for example an SSF of 1 indicates integrity protection only, no encryption).
* **NOPLAIN** - Mechanism is not susceptable to simple passive (eavesdropping) attack.
* **NOACTIVE** - Protection from active (non-dictionary) attacks during authentication exchange. (Implies MUTUAL).
* **NODICT** - Not susceptable to passive dictionary attack.
* **NOFORWARD** - Breaking one session won't help break the next.
* **NOANON** - Don't permit anonymous logins.
* **CRED** - Mechanism can pass client credentials.
* **MUTUAL** - Supports mutual authentication (authenticates the server to the client)
Features:
* **CLTFIRST** - The client should send first in this mechanism.
* **SRVFIRST** - The server must send first in this mechanism.
* **SRVLAST** - This mechanism supports server-send-last configurations.
* **PROXY** - This mechanism supports proxy authentication.
* **BIND** - This mechanism supports channel binding.
* **HTTP** - This mechanism has a profile for HTTP.
.. toctree::
:hidden:
gssapi
|
