SASL Mechanism Properties/Features
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 |
|
|
Understanding this table:
- 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.
- FORWARD - 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)
- 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.