2 files changed, 25 insertions, 4 deletions

diff --git a/src/mailman_pgp/model/list.py b/src/mailman_pgp/model/list.py
index 4699599..eccb28a 100644
--- a/src/mailman_pgp/model/list.py
+++ b/src/mailman_pgp/model/list.py
@@ -1,6 +1,6 @@
 """"""
 
-from mailman.config import config as mailman_config
+from mailman.config import config as mailman_config, config
 from mailman.database.types import Enum, SAUnicode
 from mailman.interfaces.action import Action
 from mailman.model.mailinglist import MailingList
@@ -26,6 +26,7 @@ class EncryptedMailingList(Base):
     def __init__(self, mlist):
         super().__init__()
         self.list_id = mlist.list_id
+        self._pubkey = None
 
         self._key_generator = self._create_generator(mlist)
         self._key_generator.start()
@@ -51,3 +52,11 @@ class EncryptedMailingList(Base):
     def mlist(self):
         return mailman_config.db.query(MailingList).filter_by(
             _list_id=self.list_id).first()
+
+    @property
+    def pubkey(self):
+        if self._pubkey is None:
+            if self._key_fingerprint is None:
+                return None
+            self._pubkey = config.gpg.export_keys(self._key_fingerprint)
+        return self._pubkey
diff --git a/src/mailman_pgp/rest/lists.py b/src/mailman_pgp/rest/lists.py
index e0d2b0f..312661b 100644
--- a/src/mailman_pgp/rest/lists.py
+++ b/src/mailman_pgp/rest/lists.py
@@ -1,7 +1,7 @@
 """"""
 
 from mailman.rest.helpers import (
-    child, CollectionMixin, etag, not_found, NotFound, okay)
+    child, CollectionMixin, etag, not_found, okay)
 from public import public
 
 from mailman_pgp.config import config
@@ -41,6 +41,7 @@ class AnEncryptedList(_EncryptedBase):
             list_id=list_id).first()
 
     def on_get(self, request, response):
+        """/lists/<list_id>"""
         if self._mlist is None:
             return not_found()
         else:
@@ -48,7 +49,18 @@ class AnEncryptedList(_EncryptedBase):
 
     @child()
     def key(self, context, segments):
+        return AListPubkey(self._mlist), []
+
+
+@public
+class AListPubkey:
+    def __init__(self, mlist):
+        self._mlist = mlist
+
+    def on_get(self, request, response):
+        """/lists/<list_id>/key"""
         if self._mlist is None:
-            return NotFound(), []
+            return not_found()
         else:
-            pass
+            resource = dict(public_key=self._mlist.pubkey)
+            return okay(response, etag(resource))