Archiva : mvn archetype:create without guest user

I try to launch mvn archetype:create with an archetype located on an archiva proxy.

In archiva, when guest user isn't lock, it works, but when i lock guest user , it's not possible.

The command :

mvn archetype:create
-DgroupId=com.myserver
-DartifactId=myserver
-DarchetypeGroupId=com.archetypes
-DarchetypeArtifactId=server_archetype
-DarchetypeVersion=2.0
-DremoteRepositories=http://url/

I try to add -DRepositoryId but it's not ok.

it isn't possible to pass username and password to archiva.