setup.py: add cryptography in extras_require; update example

Signed-off-by: Maxime “pep” Buquet <pep@bouah.net>

1 files changed, 7 insertions, 1 deletions

diff --git a/setup.py b/setup.py
index bcbcdf56..4830efcc 100755
--- a/setup.py
+++ b/setup.py
@@ -86,10 +86,16 @@ setup(
     package_data={'slixmpp': ['py.typed']},
     packages=packages,
     ext_modules=ext_modules,
-    install_requires=['aiodns>=1.0', 'pyasn1', 'pyasn1_modules', 'typing_extensions; python_version < "3.8.0"'],
+    install_requires=[
+        'aiodns>=1.0',
+        'pyasn1',
+        'pyasn1_modules',
+        'typing_extensions; python_version < "3.8.0"',
+    ],
     extras_require={
         'XEP-0363': ['aiohttp'],
         'XEP-0444 compliance': ['emoji'],
+        'XEP-0454': ['cryptography'],
         'Safer XML parsing': ['defusedxml'],
     },
     classifiers=CLASSIFIERS,