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<!-- $Id: mechanisms.html,v 1.8 2008/10/31 15:18:46 murch Exp $ --> <HTML> <HEAD> <TITLE>SASL Mechanism Properties/Features</TITLE> </HEAD> <BODY> <h2>SASL Mechanism Properties/Features</h2> This table shows what security flags and features are supported by each of the mechanisms provided by the Cyrus SASL Library.<p> <TABLE BORDER=1 CELLSPACING=1 CELLPADDING=2> <TR> <TH ROWSPAN=2><br></TH> <TH ROWSPAN=2>MAX<br>SSF</TH> <TH COLSPAN=7>SECURITY PROPERTIES</TH> <TH COLSPAN=4>FEATURES</TH> </TR> <TR> <TH><CENTER>NOPLAIN</CENTER></TH> <TH><CENTER>NOACTIVE</CENTER></TH> <TH><CENTER>NODICT</CENTER></TH> <TH><CENTER>FORWARD</CENTER></TH> <TH><CENTER>NOANON</CENTER></TH> <TH><CENTER>CRED</CENTER></TH> <TH><CENTER>MUTUAL</CENTER></TH> <TH><CENTER>CLT FIRST</CENTER></TH> <TH><CENTER>SRV FIRST</CENTER></TH> <TH><CENTER>SRV LAST</CENTER></TH> <TH><CENTER>PROXY</CENTER></TH> </TR> <TR> <TH>ANONYMOUS</TH> <TD><CENTER>0</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> </TR> <TR> <TH>CRAM-MD5</TH> <TD><CENTER>0</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> </TR> <TR> <TH>DIGEST-MD5</TH> <TD><CENTER>128</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>reauth</CENTER></TD> <TD><CENTER>initial auth</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> </TR> <TR> <TH>EXTERNAL</TH> <TD><CENTER>0</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> </TR> <TR> <TH>GSSAPI</TH> <TD><CENTER>56</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> </TR> <TR> <TH>KERBEROS_V4</TH> <TD><CENTER>56</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> </TR> <TR> <TH>LOGIN</TH> <TD><CENTER>0</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> </TR> <TR> <TH>NTLM</TH> <TD><CENTER>0</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> </TR> <TR> <TH>OTP</TH> <TD><CENTER>0</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> </TR> <TR> <TH>PASSDSS-3DES-1</TH> <TD><CENTER>112</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> </TR> <TR> <TH>PLAIN</TH> <TD><CENTER>0</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> </TR> <!-- <TR> <TH>SECURID</TH> <TD><CENTER>0</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> </TR> <TR> <TH>SKEY</TH> <TD><CENTER>0</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER><br></CENTER></TD> </TR> --> <TR> <TH>SRP</TH> <TD><CENTER>128</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER><br></CENTER></TD> <TD><CENTER>X</CENTER></TD> <TD><CENTER>X</CENTER></TD> </TR> </TABLE> <h3>Understanding this table:</h3> <ul> <li><b>MAX SSF</b> - 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).</li> <li><b>NOPLAIN</b> - Mechanism is not susceptable to simple passive (eavesdropping) attack.</li> <li><b>NOACTIVE</b> - Protection from active (non-dictionary) attacks during authentication exchange. (Implies <b>MUTUAL</b>).</li> <li><b>NODICT</b> - Not susceptable to passive dictionary attack.</li> <li><b>FORWARD</b> - Breaking one session won't help break the next.</li> <li><b>NOANON</b> - Don't permit anonymous logins.</li> <li><b>CRED</b> - Mechanism can pass client credentials.</li> <li><b>MUTUAL</b> - Supports mutual authentication (authenticates the server to the client)</li> <li><b>CLTFIRST</b> - The client should send first in this mechanism.</li> <li><b>SRVFIRST</b> - The server must send first in this mechanism.</li> <li><b>SRVLAST</b> - This mechanism supports server-send-last configurations.</li> <li><b>PROXY</b> - This mechanism supports proxy authentication.</li> </ul> </BODY> </HTML>