add missing OlmPkSigning class
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android/olm-sdk/src/main/java/org/matrix/olm/OlmPkSigning.java
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android/olm-sdk/src/main/java/org/matrix/olm/OlmPkSigning.java
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/*
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* Copyright 2019 New Vector Ltd
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.matrix.olm;
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import android.util.Log;
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import java.util.Arrays;
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public class OlmPkSigning {
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private static final String LOG_TAG = "OlmPkSigning";
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/** PK Signing Id returned by JNI.
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* This value uniquely identifies the native PK signing instance.
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**/
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private transient long mNativeId;
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public OlmPkSigning() throws OlmException {
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try {
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mNativeId = createNewPkSigningJni();
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} catch (Exception e) {
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throw new OlmException(OlmException.EXCEPTION_CODE_PK_SIGNING_CREATION, e.getMessage());
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}
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}
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private native long createNewPkSigningJni();
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private native void releasePkSigningJni();
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public void releaseSigning() {
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if (0 != mNativeId) {
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releasePkSigningJni();
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}
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mNativeId = 0;
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}
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public boolean isReleased() {
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return (0 == mNativeId);
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}
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public static native int seedLength();
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public static byte[] generateSeed() throws OlmException {
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try {
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return generateSeedJni();
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} catch (Exception e) {
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Log.e(LOG_TAG, "## generateSeed(): failed " + e.getMessage());
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throw new OlmException(OlmException.EXCEPTION_CODE_PK_SIGNING_GENERATE_SEED, e.getMessage());
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}
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}
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public static native byte[] generateSeedJni();
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public String initWithSeed(byte[] seed) throws OlmException {
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try {
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byte[] pubKey = setKeyFromSeedJni(seed);
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return new String(pubKey, "UTF-8");
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} catch (Exception e) {
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Log.e(LOG_TAG, "## initWithSeed(): failed " + e.getMessage());
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throw new OlmException(OlmException.EXCEPTION_CODE_PK_SIGNING_INIT_WITH_SEED, e.getMessage());
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}
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}
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public native byte[] setKeyFromSeedJni(byte[] seed);
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public String sign(String aMessage) throws OlmException {
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if (null == aMessage) {
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return null;
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}
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byte[] messageBuffer = null;
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try {
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messageBuffer = aMessage.getBytes("UTF-8");
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byte[] signature = pkSignJni(messageBuffer);
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return new String(signature, "UTF-8");
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} catch (Exception e) {
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Log.e(LOG_TAG, "## pkSign(): failed " + e.getMessage());
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throw new OlmException(OlmException.EXCEPTION_CODE_PK_SIGNING_SIGN, e.getMessage());
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} finally {
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if (null != messageBuffer) {
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Arrays.fill(messageBuffer, (byte) 0);
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}
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}
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}
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private native byte[] pkSignJni(byte[] message);
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}
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