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-rw-r--r--android/olm-sdk/src/main/java/org/matrix/olm/OlmPkSigning.java100
1 files changed, 100 insertions, 0 deletions
diff --git a/android/olm-sdk/src/main/java/org/matrix/olm/OlmPkSigning.java b/android/olm-sdk/src/main/java/org/matrix/olm/OlmPkSigning.java
new file mode 100644
index 0000000..89cb556
--- /dev/null
+++ b/android/olm-sdk/src/main/java/org/matrix/olm/OlmPkSigning.java
@@ -0,0 +1,100 @@
+/*
+ * Copyright 2019 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;
+
+import java.util.Arrays;
+
+public class OlmPkSigning {
+ private static final String LOG_TAG = "OlmPkSigning";
+
+ /** PK Signing Id returned by JNI.
+ * This value uniquely identifies the native PK signing instance.
+ **/
+ private transient long mNativeId;
+
+ public OlmPkSigning() throws OlmException {
+ try {
+ mNativeId = createNewPkSigningJni();
+ } catch (Exception e) {
+ throw new OlmException(OlmException.EXCEPTION_CODE_PK_SIGNING_CREATION, e.getMessage());
+ }
+ }
+
+ private native long createNewPkSigningJni();
+
+ private native void releasePkSigningJni();
+
+ public void releaseSigning() {
+ if (0 != mNativeId) {
+ releasePkSigningJni();
+ }
+ mNativeId = 0;
+ }
+
+ public boolean isReleased() {
+ return (0 == mNativeId);
+ }
+
+ public static native int seedLength();
+
+ public static byte[] generateSeed() throws OlmException {
+ try {
+ return generateSeedJni();
+ } catch (Exception e) {
+ Log.e(LOG_TAG, "## generateSeed(): failed " + e.getMessage());
+ throw new OlmException(OlmException.EXCEPTION_CODE_PK_SIGNING_GENERATE_SEED, e.getMessage());
+ }
+ }
+
+ public static native byte[] generateSeedJni();
+
+ public String initWithSeed(byte[] seed) throws OlmException {
+ try {
+ byte[] pubKey = setKeyFromSeedJni(seed);
+ return new String(pubKey, "UTF-8");
+ } catch (Exception e) {
+ Log.e(LOG_TAG, "## initWithSeed(): failed " + e.getMessage());
+ throw new OlmException(OlmException.EXCEPTION_CODE_PK_SIGNING_INIT_WITH_SEED, e.getMessage());
+ }
+ }
+
+ public native byte[] setKeyFromSeedJni(byte[] seed);
+
+ public String sign(String aMessage) throws OlmException {
+ if (null == aMessage) {
+ return null;
+ }
+
+ byte[] messageBuffer = null;
+ try {
+ messageBuffer = aMessage.getBytes("UTF-8");
+ byte[] signature = pkSignJni(messageBuffer);
+ return new String(signature, "UTF-8");
+ } catch (Exception e) {
+ Log.e(LOG_TAG, "## pkSign(): failed " + e.getMessage());
+ throw new OlmException(OlmException.EXCEPTION_CODE_PK_SIGNING_SIGN, e.getMessage());
+ } finally {
+ if (null != messageBuffer) {
+ Arrays.fill(messageBuffer, (byte) 0);
+ }
+ }
+ }
+
+ private native byte[] pkSignJni(byte[] message);
+}