For example, you can configure EMSCA JAAS users in a plain text file:

1). Create a file: emsca.jaas to define the LoginModule Configuration using PropertyFileLoginModule.

#####
tibemsca {
       org.eclipse.jetty.jaas.spi.PropertyFileLoginModule required
       debug="true"
       file="users.txt";
};
#####

2). The users.txt defines the username, password and the role of the user (emsca-admin or emsca-guest). Passwords can be stored in clear text, obfuscated, checksummed or encrypted in order of increasing security. The class org.mortbay.jetty.security.Password can be used to generate all varieties of passwords. 

java -cp ./jetty-all.jar  org.eclipse.jetty.util.security.Password
Usage - java org.eclipse.jetty.security.Password [<user>] <password>
If the password is ?, the user will be prompted for the password

For example, you want to replace the clear text of the password: adminpassword for user: admin. You can do following:

java -cp ./jetty-all.jar  org.eclipse.jetty.util.security.Password  admin adminpassword
adminpassword
OBF:1s3g1vg11wn11xf51xmi1y0s1ri71y0y1xms1xfx1wn51vgt1s3m
MD5:e3274be5c857fb42ab72d786e281b4b8

CRYPT:adDu2y7orMx7Y

Then copy whichever secure version you choose including OBF: MD5: CRYPT: to replace the clear text password in users.txt. The format of users.txt is: <username>: <password>[,<rolename> ...]

Example
#####
admin:OBF:1s3g1vg11wn11xf51xmi1y0s1ri71y0y1xms1xfx1wn51vgt1s3m, emsca-admin
guest:MD5:81011aa42a2a32887835a090dec3d7fb, emsca-guest
#####

Make sure the user: admin and guest has the same password defined in the EMS server(s) with corresponding privileges according to their roles. Then Start EMSCA to enable the use of JAAS. There are two ways to do this.

a). Start the EMSCA server with `-j` or `--jaas` followed by the path to the JAAS configuration file, for example:

tibemsca.bat -j emsca.jaas

b). Define the configuration file: emsca.jaas under the property `com.tibco.emsca.jaas` in the EMSCA configuration file. For example, in the EMSCA configuration file: emsca.property defines following to point to emsca.jaas:

#####
com.tibco.emsca.data.dir=./emsca_data
com.tibco.emsca.http.hostport=*:8080
com.tibco.emsca.jaas=emsca.jaas
#####

Start EMSCA with the EMSCA configuration file: emsca.property:

tibemsca.bat -c emsca.property