~/apache-tomcat-7.0.69/bin$ ./digest.sh -a MD5 test
Listening for transport dt_socket at address: 5005
test:098f6bcd4621d373cade4e832627b4f6
~/apache-tomcat-7.0.69/bin$

~/apache-tomcat-8.5.6/bin$ ./digest.sh -a MD5 test
test:27d6262696d98e0a8a973d43eef07c66c68b089a4ada21dd3ba0defc04ca302e$1$13a7c1932523dcea3bb39ef05b75b4c6
~/apache-tomcat-8.5.6/bin$

<Realm className="org.apache.catalina.realm.DataSourceRealm"
    dataSourceName="jdbc/myDataSource"
    roleNameCol="role" userCredCol="password" userNameCol="loginid"
    digest="md5"
    userRoleTable="userroles" userTable="users"
    localDataSource="true" />

<Realm className="org.apache.catalina.realm.DataSourceRealm"
    dataSourceName="jdbc/myDataSource"
    roleNameCol="role" userCredCol="password" userNameCol="loginid"
    userRoleTable="userroles" userTable="users" localDataSource="true">
    <CredentialHandler
    className="org.apache.catalina.realm.MessageDigestCredentialHandler"
    algorithm="md5" />
</Realm>