Password vault code is stored in the following files:

• install/share/vault.ldif

• ipaclient/plugins/vault.py

• ipaserver/plugins/vault.py

• ipaserver/install/ca.py

• ipaserver/install/cainstance.py

• ipaserver/install/kra.py

• ipaserver/install/krainstance.py

• ipatests/test_xmlrpc/test_vault_plugin.py