From ccbb9606b725b8f1d7eeccf14c358b146aeee491 Mon Sep 17 00:00:00 2001 From: ylecollen Date: Tue, 10 Jan 2017 16:06:21 +0100 Subject: Move the android project from /Java/Android/OlmLibSdk --- .../src/main/java/org/matrix/olm/OlmUtility.java | 227 +++++++++++++++++++++ 1 file changed, 227 insertions(+) create mode 100644 android/olm-sdk/src/main/java/org/matrix/olm/OlmUtility.java (limited to 'android/olm-sdk/src/main/java/org/matrix/olm/OlmUtility.java') diff --git a/android/olm-sdk/src/main/java/org/matrix/olm/OlmUtility.java b/android/olm-sdk/src/main/java/org/matrix/olm/OlmUtility.java new file mode 100644 index 0000000..bf9ef90 --- /dev/null +++ b/android/olm-sdk/src/main/java/org/matrix/olm/OlmUtility.java @@ -0,0 +1,227 @@ +/* + * Copyright 2017 OpenMarket Ltd + * Copyright 2017 Vector Creations 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.text.TextUtils; +import android.util.Log; + +import org.json.JSONObject; + +import java.security.SecureRandom; +import java.util.HashMap; +import java.util.Iterator; +import java.util.Map; + +/** + * Olm SDK helper class. + */ +public class OlmUtility { + private static final String LOG_TAG = "OlmUtility"; + + public static final int RANDOM_KEY_SIZE = 32; + + /** Instance Id returned by JNI. + * This value uniquely identifies this utility instance. + **/ + private long mNativeId; + + public OlmUtility() throws OlmException { + initUtility(); + } + + /** + * Create a native utility instance. + * To be called before any other API call. + * @exception OlmException the exception + */ + private void initUtility() throws OlmException { + try { + mNativeId = createUtilityJni(); + } catch (Exception e) { + throw new OlmException(OlmException.EXCEPTION_CODE_UTILITY_CREATION, e.getMessage()); + } + } + + private native long createUtilityJni(); + + /** + * Release native instance.
+ * Public API for {@link #releaseUtilityJni()}. + */ + public void releaseUtility() { + if (0 != mNativeId) { + releaseUtilityJni(); + } + mNativeId = 0; + } + private native void releaseUtilityJni(); + + /** + * Verify an ed25519 signature.
+ * An exception is thrown if the operation fails. + * @param aSignature the base64-encoded message signature to be checked. + * @param aFingerprintKey the ed25519 key (fingerprint key) + * @param aMessage the signed message + * @exception OlmException the failure reason + */ + public void verifyEd25519Signature(String aSignature, String aFingerprintKey, String aMessage) throws OlmException { + String errorMessage; + + try { + if (TextUtils.isEmpty(aSignature) || TextUtils.isEmpty(aFingerprintKey) || TextUtils.isEmpty(aMessage)) { + Log.e(LOG_TAG, "## verifyEd25519Signature(): invalid input parameters"); + errorMessage = "JAVA sanity check failure - invalid input parameters"; + } else { + errorMessage = verifyEd25519SignatureJni(aSignature.getBytes("UTF-8"), aFingerprintKey.getBytes("UTF-8"), aMessage.getBytes("UTF-8")); + } + } catch (Exception e) { + Log.e(LOG_TAG, "## verifyEd25519Signature(): failed " + e.getMessage()); + errorMessage = e.getMessage(); + } + + if (!TextUtils.isEmpty(errorMessage)) { + throw new OlmException(OlmException.EXCEPTION_CODE_UTILITY_VERIFY_SIGNATURE, errorMessage); + } + } + + /** + * Verify an ed25519 signature. + * Return a human readable error message in case of verification failure. + * @param aSignature the base64-encoded message signature to be checked. + * @param aFingerprintKey the ed25519 key + * @param aMessage the signed message + * @return null if validation succeed, the error message string if operation failed + */ + private native String verifyEd25519SignatureJni(byte[] aSignature, byte[] aFingerprintKey, byte[] aMessage); + + /** + * Compute the hash(SHA-256) value of the string given in parameter(aMessageToHash).
+ * The hash value is the returned by the method. + * @param aMessageToHash message to be hashed + * @return hash value if operation succeed, null otherwise + */ + public String sha256(String aMessageToHash) { + String hashRetValue = null; + + if (null != aMessageToHash) { + try { + hashRetValue = new String(sha256Jni(aMessageToHash.getBytes("UTF-8")), "UTF-8"); + } catch (Exception e) { + Log.e(LOG_TAG, "## sha256(): failed " + e.getMessage()); + } + } + + return hashRetValue; + } + + /** + * Compute the digest (SHA 256) for the message passed in parameter.
+ * The digest value is the function return value. + * An exception is thrown if the operation fails. + * @param aMessage the message + * @return digest of the message. + **/ + private native byte[] sha256Jni(byte[] aMessage); + + /** + * Helper method to compute a string based on random integers. + * @return bytes buffer containing randoms integer values + */ + public static byte[] getRandomKey() { + SecureRandom secureRandom = new SecureRandom(); + byte[] buffer = new byte[RANDOM_KEY_SIZE]; + secureRandom.nextBytes(buffer); + + // the key is saved as string + // so avoid the UTF8 marker bytes + for(int i = 0; i < RANDOM_KEY_SIZE; i++) { + buffer[i] = (byte)(buffer[i] & 0x7F); + } + return buffer; + } + + /** + * Return true the object resources have been released.
+ * @return true the object resources have been released + */ + public boolean isReleased() { + return (0 == mNativeId); + } + + /** + * Build a string-string dictionary from a jsonObject.
+ * @param jsonObject the object to parse + * @return the map + */ + public static Map toStringMap(JSONObject jsonObject) { + if (null != jsonObject) { + HashMap map = new HashMap<>(); + Iterator keysItr = jsonObject.keys(); + while(keysItr.hasNext()) { + String key = keysItr.next(); + try { + Object value = jsonObject.get(key); + + if (value instanceof String) { + map.put(key, (String) value); + } else { + Log.e(LOG_TAG, "## toStringMap(): unexpected type " + value.getClass()); + } + } catch (Exception e) { + Log.e(LOG_TAG, "## toStringMap(): failed " + e.getMessage()); + } + } + + return map; + } + + return null; + } + + /** + * Build a string-string dictionary of string dictionary from a jsonObject.
+ * @param jsonObject the object to parse + * @return the map + */ + public static Map> toStringMapMap(JSONObject jsonObject) { + if (null != jsonObject) { + HashMap> map = new HashMap<>(); + + Iterator keysItr = jsonObject.keys(); + while(keysItr.hasNext()) { + String key = keysItr.next(); + try { + Object value = jsonObject.get(key); + + if (value instanceof JSONObject) { + map.put(key, toStringMap((JSONObject) value)); + } else { + Log.e(LOG_TAG, "## toStringMapMap(): unexpected type " + value.getClass()); + } + } catch (Exception e) { + Log.e(LOG_TAG, "## toStringMapMap(): failed " + e.getMessage()); + } + } + + return map; + } + + return null; + } +} + -- cgit v1.2.3