...
<repository type="maven">
<remoteRepositories>
<remoteRepository>
<id>stPublic</id>
<password>PASTE_PASSWORD_HERE</password>
<user>stmaven</user>
<url>http://repositories.searchtechnologies.com:8080/archiva/repository/public/</url>
</remoteRepository>
</remoteRepositories>
<defaultVersion>0.5-SNAPSHOT</defaultVersion>
</repository>
See Password Encryption for more details.