diff --git a/gnupg/_parsers.py b/gnupg/_parsers.py
index 8e5d751..a99e910 100644
--- a/gnupg/_parsers.py
+++ b/gnupg/_parsers.py
@@ -959,7 +959,6 @@ class ListKeys(list):
     |  crs = X.509 certificate and private key available
     |  ssb = secret subkey (secondary key)
     |  uat = user attribute (same as user id except for field 10).
-    |  sig = signature
     |  rev = revocation signature
     |  pkd = public key data (special field format, see below)
     |  grp = reserved for gpgsm
@@ -970,8 +969,10 @@ class ListKeys(list):
         super(ListKeys, self).__init__()
         self._gpg = gpg
         self.curkey = None
+        self.curuid = None
         self.fingerprints = []
         self.uids = []
+        self.sigs = {}
 
     def key(self, args):
         vars = ("""
@@ -981,8 +982,12 @@ class ListKeys(list):
         for i in range(len(vars)):
             self.curkey[vars[i]] = args[i]
         self.curkey['uids'] = []
+        self.curkey['sigs'] = {}
         if self.curkey['uid']:
-            self.curkey['uids'].append(self.curkey['uid'])
+            self.curuid = self.curkey['uid']
+            self.curkey['uids'].append(self.curuid)
+            self.sigs[self.curuid] = set()
+            self.curkey['sigs'][self.curuid] = []
         del self.curkey['uid']
         self.curkey['subkeys'] = []
         self.append(self.curkey)
@@ -997,8 +1002,21 @@ class ListKeys(list):
         uid = args[9]
         uid = ESCAPE_PATTERN.sub(lambda m: chr(int(m.group(1), 16)), uid)
         self.curkey['uids'].append(uid)
+        self.curuid = uid
+        self.curkey['sigs'][uid] = []
+        self.sigs[uid] = set()
         self.uids.append(uid)
 
+    def sig(self, args):
+        vars = ("""
+            type trust length algo keyid date expires dummy ownertrust uid
+        """).split()
+        sig = {}
+        for i in range(len(vars)):
+            sig[vars[i]] = args[i]
+        self.curkey['sigs'][self.curuid].append(sig)
+        self.sigs[self.curuid].add(sig['keyid'])
+
     def sub(self, args):
         subkey = [args[4], args[11]]
         self.curkey['subkeys'].append(subkey)
diff --git a/gnupg/gnupg.py b/gnupg/gnupg.py
index 42498db..18a8385 100644
--- a/gnupg/gnupg.py
+++ b/gnupg/gnupg.py
@@ -471,19 +471,7 @@ class GPG(GPGBase):
         self._collect_output(p, result, stdin=p.stdin)
         lines = result.data.decode(self._encoding,
                                    self._decode_errors).splitlines()
-        valid_keywords = 'pub uid sec fpr sub'.split()
-        for line in lines:
-            if self.verbose:
-                print(line)
-            log.debug("%r", line.rstrip())
-            if not line:
-                break
-            L = line.strip().split(':')
-            if not L:
-                continue
-            keyword = L[0]
-            if keyword in valid_keywords:
-                getattr(result, keyword)(L)
+        self._parse_keys(result)
         return result
 
     def list_packets(self, raw_data):
@@ -504,8 +492,8 @@ class GPG(GPGBase):
         >>> assert key.fingerprint
 
         :rtype: dict
-        :returns: A dictionary whose keys are the original keyid parameters,
-            and whose values are lists of signatures.
+        :returns: res.sigs is a dictionary whose keys are the uids and whose
+                values are a set of signature keyids.
         """
         if len(keyids) > self._batch_limit:
             raise ValueError(
@@ -520,8 +508,26 @@ class GPG(GPGBase):
         proc = self._open_subprocess(args)
         result = self._result_map['list'](self)
         self._collect_output(proc, result, stdin=proc.stdin)
+        self._parse_keys(result)
         return result
 
+    def _parse_keys(self, result):
+        lines = result.data.decode(self._encoding,
+                                   self._decode_errors).splitlines()
+        valid_keywords = 'pub uid sec fpr sub sig'.split()
+        for line in lines:
+            if self.verbose:
+                print(line)
+            log.debug("%r", line.rstrip())
+            if not line:
+                break
+            L = line.strip().split(':')
+            if not L:
+                continue
+            keyword = L[0]
+            if keyword in valid_keywords:
+                getattr(result, keyword)(L)
+
     def gen_key(self, input):
         """Generate a GnuPG key through batch file key generation. See
         :meth:`GPG.gen_key_input()` for creating the control input.