Split ssh_audit.py into separate files (#47).

src/ssh_audit/fingerprint.py

@@ -0,0 +1,43 @@
+"""
+   The MIT License (MIT)
+
+   Copyright (C) 2017-2020 Joe Testa (jtesta@positronsecurity.com)
+   Copyright (C) 2017 Andris Raugulis (moo@arthepsy.eu)
+
+   Permission is hereby granted, free of charge, to any person obtaining a copy
+   of this software and associated documentation files (the "Software"), to deal
+   in the Software without restriction, including without limitation the rights
+   to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+   copies of the Software, and to permit persons to whom the Software is
+   furnished to do so, subject to the following conditions:
+
+   The above copyright notice and this permission notice shall be included in
+   all copies or substantial portions of the Software.
+
+   THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+   IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+   FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+   AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+   LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+   OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+   THE SOFTWARE.
+"""
+import base64
+import hashlib
+
+
+class Fingerprint:
+    def __init__(self, fpd: bytes) -> None:
+        self.__fpd = fpd
+
+    @property
+    def md5(self) -> str:
+        h = hashlib.md5(self.__fpd).hexdigest()
+        r = u':'.join(h[i:i + 2] for i in range(0, len(h), 2))
+        return u'MD5:{}'.format(r)
+
+    @property
+    def sha256(self) -> str:
+        h = base64.b64encode(hashlib.sha256(self.__fpd).digest())
+        r = h.decode('ascii').rstrip('=')
+        return u'SHA256:{}'.format(r)