1 files changed, 89 insertions, 0 deletions
diff --git a/android/olm-sdk/src/main/java/org/matrix/olm/OlmPkEncryption.java b/android/olm-sdk/src/main/java/org/matrix/olm/OlmPkEncryption.java
new file mode 100644
index 0000000..9bd429d
--- /dev/null
+++ b/android/olm-sdk/src/main/java/org/matrix/olm/OlmPkEncryption.java
@@ -0,0 +1,89 @@
+/*
+ * 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 OlmPkEncryption {
+    private static final String LOG_TAG = "OlmPkEncryption";
+
+    /** Session Id returned by JNI.
+     * This value uniquely identifies the native session instance.
+     **/
+    private transient long mNativeId;
+
+    public OlmPkEncryption() throws OlmException {
+        try {
+            mNativeId = createNewPkEncryptionJni();
+        } catch (Exception e) {
+            throw new OlmException(OlmException.EXCEPTION_CODE_PK_ENCRYPTION_CREATION, e.getMessage());
+        }
+    }
+
+    private native long createNewPkEncryptionJni();
+
+    private native void releasePkEncryptionJni();
+
+    public void releaseEncryption() {
+        if (0 != mNativeId) {
+            releasePkEncryptionJni();
+        }
+        mNativeId = 0;
+    }
+
+    public boolean isReleased() {
+        return (0 == mNativeId);
+    }
+
+    public void setRecipientKey(String aKey) throws OlmException {
+        if (null == aKey) {
+            return;
+        }
+
+        try {
+            setRecipientKeyJni(aKey.getBytes("UTF-8"));
+        } catch (Exception e) {
+            Log.e(LOG_TAG, "## setRecipientKey(): failed " + e.getMessage());
+            throw new OlmException(OlmException.EXCEPTION_CODE_PK_ENCRYPTION_SET_RECIPIENT_KEY, e.getMessage());
+        }
+    }
+
+    private native void setRecipientKeyJni(byte[] aKey);
+
+    public OlmPkMessage encrypt(String aPlaintext) throws OlmException {
+        if (null == aPlaintext) {
+            return null;
+        }
+
+        OlmPkMessage encryptedMsgRetValue = new OlmPkMessage();
+
+        try {
+            byte[] ciphertextBuffer = encryptJni(aPlaintext.getBytes("UTF-8"), encryptedMsgRetValue);
+
+            if (null != ciphertextBuffer) {
+                encryptedMsgRetValue.mCipherText = new String(ciphertextBuffer, "UTF-8");
+            }
+        } catch (Exception e) {
+            Log.e(LOG_TAG, "## pkEncrypt(): failed " + e.getMessage());
+            throw new OlmException(OlmException.EXCEPTION_CODE_PK_ENCRYPTION_ENCRYPT, e.getMessage());
+        }
+
+        return encryptedMsgRetValue;
+    }
+
+    private native byte[] encryptJni(byte[] plaintext, OlmPkMessage aMessage);
+}