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authorHubert Chathi <hubert@uhoreg.ca>2019-08-28 17:36:46 -0700
committerHubert Chathi <hubert@uhoreg.ca>2019-08-28 17:36:46 -0700
commite3d3fbf63f6b75d3e0adfd71012163a2c673833b (patch)
tree0711e2e9bbfabcd83867ff524050c05441187882 /synapse/util/hash.py
parentblack (diff)
parentMerge branch 'develop' into uhoreg/e2e_cross-signing_merged (diff)
downloadsynapse-e3d3fbf63f6b75d3e0adfd71012163a2c673833b.tar.xz
Merge branch 'uhoreg/e2e_cross-signing_merged' into cross-signing_keys
Diffstat (limited to 'synapse/util/hash.py')
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diff --git a/synapse/util/hash.py b/synapse/util/hash.py
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+# -*- coding: utf-8 -*-
+
+# Copyright 2019 The Matrix.org Foundation C.I.C.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+import hashlib
+
+import unpaddedbase64
+
+
+def sha256_and_url_safe_base64(input_text):
+    """SHA256 hash an input string, encode the digest as url-safe base64, and
+    return
+
+    :param input_text: string to hash
+    :type input_text: str
+
+    :returns a sha256 hashed and url-safe base64 encoded digest
+    :rtype: str
+    """
+    digest = hashlib.sha256(input_text.encode()).digest()
+    return unpaddedbase64.encode_base64(digest, urlsafe=True)