added key generation

scripts/generate_keys.py

@@ -0,0 +1,35 @@
+#!/usr/bin/env python3
+'''
+generate a public/private key pair using Monocypher
+'''
+
+import sys
+import base64
+
+try:
+    import monocypher
+except ImportError:
+    print("Please install monocypher with: python3 -m pip install pymonocypher")
+    sys.exit(1)
+
+
+if len(sys.argv) != 2:
+    print("Usage: generate_keys.py BASENAME")
+    sys.exit(1)
+
+bname = sys.argv[1]
+
+def encode_key(ktype, key):
+    return ktype + "_KEYV1:" + base64.b64encode(key).decode('utf-8')
+
+private_key = monocypher.generate_key()
+public_key = monocypher.compute_signing_public_key(private_key)
+
+public_fname = "%s_public_key.dat" % bname
+private_fname = "%s_private_key.dat" % bname
+
+open(private_fname, "w").write(encode_key("PRIVATE", private_key))
+print("Generated %s" % private_fname)
+
+open(public_fname, "w").write(encode_key("PUBLIC", public_key))
+print("Generated %s" % public_fname)