RQM 2.X

How does a user change their own password?

How does an admin change a user's password?

You may want to take a look at the digest.bat utility in:

..\server\tomcat\bin\digest.bat

Usage: RealmBase -a <algorithm> <credentials>

With the default tomcat configuration in a Windows installation

digest.bat -a SHA-1 <password>

will give an encrypted password that can then be pasted into the tomcat-users.xml file to replace/change a password.

To confirm the algorithm, examine the output for a known password.

There's some additional information on the native utility at:
http://tomcat.apache.org/tomcat-6.0-doc/realm-howto.html#Digested%20Passwords