1 files changed, 35 insertions, 0 deletions
diff --git a/slixmpp/plugins/xep_0300/stanza.py b/slixmpp/plugins/xep_0300/stanza.py
new file mode 100644
index 00000000..f5ab483c
--- /dev/null
+++ b/slixmpp/plugins/xep_0300/stanza.py
@@ -0,0 +1,35 @@
+"""
+    Slixmpp: The Slick XMPP Library
+    Copyright (C) 2017 Emmanuel Gil Peyrot
+    This file is part of Slixmpp.
+
+    See the file LICENSE for copying permission.
+"""
+
+from slixmpp.xmlstream import ElementBase
+
+
+class Hash(ElementBase):
+    name = 'hash'
+    namespace = 'urn:xmpp:hashes:2'
+    plugin_attrib = 'hash'
+    interfaces = {'algo', 'value'}
+
+    allowed_algos = ['sha-1', 'sha-256', 'sha-512', 'sha3-256', 'sha3-512', 'BLAKE2b256', 'BLAKE2b512']
+
+    def set_algo(self, value):
+        if value in self.allowed_algos:
+            self._set_attr('algo', value)
+        elif value in [None, '']:
+            self._del_attr('algo')
+        else:
+            raise ValueError('Invalid algo: %s' % value)
+
+    def get_value(self):
+        return self.xml.text
+
+    def set_value(self, value):
+        self.xml.text = value
+
+    def del_value(self):
+        self.xml.text = ''