[PR] GUACAMOLE-2211: Add example JavaScript encryption. [guacamole-client]

["necouchman (via GitHub)" <gi...@apache.org>]

necouchman opened a new pull request, #1158:
URL: https://github.com/apache/guacamole-client/pull/1158

   (no comment)


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Re: [PR] GUACAMOLE-2211: Add example JavaScript encryption. [guacamole-client]

["eugen-keeper (via GitHub)" <gi...@apache.org>]

eugen-keeper commented on code in PR #1158:
URL: https://github.com/apache/guacamole-client/pull/1158#discussion_r3381196088


##########
extensions/guacamole-auth-json/doc/encrypt-json.js:
##########
@@ -0,0 +1,183 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements.  See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership.  The ASF licenses this file
+ * to you 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.
+ */
+
+/**
+ * This file provides a sample/reference implementation for
+ * taking plain-text JSON data and signing and encrypting it
+ * for use by the guacamole-auth-json authentication extension.
+ */
+
+// Some connection data
+let json=`{
+  "username" : "test",
+  "connections" : {
+    "My Connection" : {
+      "protocol" : "rdp",
+      "parameters" : {
+        "hostname" : "10.10.209.63",
+        "port":"3389",
+        "ignore-cert":"true",
+        "recording-path":"/recordings",
+        "recording-name":"My-Connection-\${GUAC_USERNAME}-\${GUAC_DATE}-\${GUAC_TIME}"
+      }
+    },
+    "My OTHER Connection" : {
+      "protocol" : "rdp",
+      "parameters" : {
+        "hostname":"10.10.209.64",
+        "port":"3389",
+        "ignore-cert":"true",
+        "recording-path":"/recordings",
+        "recording-name":"My-OTHER-Connection-\${GUAC_USERNAME}-\${GUAC_DATE}-\${GUAC_TIME}"
+      }
+    }
+  }
+}`
+
+// Our signing/encryption key
+let key = '2ab26b6438c580e5281edd6639f22e65';
+
+// This is a null IV
+let zeroiv = new Uint8Array([ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 ]);
+
+/**
+ * Encode the provided string of JSON data into an array that can be
+ * signed and encrypted, returning the resultant array.
+ * 
+ * @param json
+ *     The string of JSON data to encode.
+ *
+ * @return
+ *     An encoded array of data.
+ */
+function encodeConnections(json) {
+  var encoder = new TextEncoder();
+  return encoder.encode(json);
+}
+
+/**
+ * Take the encoded array and generate an HMAC signature for it,
+ * combining the HMAC signature with the data and returning the
+ * resultant array.
+ *
+ * @param key
+ *     The 128-bit key used to sign the data, provided as a
+ *     16-character hexadecimal value.

Review Comment:
   Probably 16 bytes and 32-character hexadecimal value.



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