add initial version of Android wrapper for public key API

1 files changed, 78 insertions, 0 deletions

diff --git a/android/olm-sdk/src/main/java/org/matrix/olm/OlmPkDecryption.java b/android/olm-sdk/src/main/java/org/matrix/olm/OlmPkDecryption.java
new file mode 100644
index 0000000..03d055a
--- /dev/null
+++ b/android/olm-sdk/src/main/java/org/matrix/olm/OlmPkDecryption.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright 2018 New Vector Ltd
+ *
+ * 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.
+ */
+
+package org.matrix.olm;
+
+import android.util.Log;
+
+public class OlmPkDecryption {
+    private static final String LOG_TAG = "OlmPkDecryption";
+
+    /** Session Id returned by JNI.
+     * This value uniquely identifies the native session instance.
+     **/
+    private transient long mNativeId;
+
+    public OlmPkDecryption() throws OlmException {
+        try {
+            mNativeId = createNewPkDecryptionJni();
+        } catch (Exception e) {
+            throw new OlmException(OlmException.EXCEPTION_CODE_PK_DECRYPTION_CREATION, e.getMessage());
+        }
+    }
+
+    private native long createNewPkDecryptionJni();
+
+    private native void releasePkDecryptionJni();
+
+    public void releaseDecryption() {
+        if (0 != mNativeId) {
+            releasePkDecryptionJni();
+        }
+        mNativeId = 0;
+    }
+
+    public boolean isReleased() {
+        return (0 == mNativeId);
+    }
+
+    public String generateKey() throws OlmException {
+        try {
+            byte[] key = generateKeyJni();
+            return new String(key, "UTF-8");
+        } catch (Exception e) {
+            Log.e(LOG_TAG, "## setRecipientKey(): failed " + e.getMessage());
+            throw new OlmException(OlmException.EXCEPTION_CODE_PK_DECRYPTION_GENERATE_KEY, e.getMessage());
+        }
+    }
+
+    private native byte[] generateKeyJni();
+
+    public String decrypt(OlmPkMessage aMessage) throws OlmException {
+        if (null == aMessage) {
+            return null;
+        }
+
+        try {
+            return new String(decryptJni(aMessage), "UTF-8");
+        } catch (Exception e) {
+            Log.e(LOG_TAG, "## pkDecrypt(): failed " + e.getMessage());
+            throw new OlmException(OlmException.EXCEPTION_CODE_PK_DECRYPTION_DECRYPT, e.getMessage());
+        }
+    }
+
+    private native byte[] decryptJni(OlmPkMessage aMessage);
+}