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Diffstat (limited to 'android/olm-sdk/src/main/java/org/matrix/olm/OlmUtility.java')
| -rw-r--r-- | android/olm-sdk/src/main/java/org/matrix/olm/OlmUtility.java | 240 |
1 files changed, 0 insertions, 240 deletions
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 deleted file mode 100644 index 250cfb1..0000000 --- a/android/olm-sdk/src/main/java/org/matrix/olm/OlmUtility.java +++ /dev/null @@ -1,240 +0,0 @@ -/* - * 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.Arrays; -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.<br> - * Public API for {@link #releaseUtilityJni()}. - */ - public void releaseUtility() { - if (0 != mNativeId) { - releaseUtilityJni(); - } - mNativeId = 0; - } - private native void releaseUtilityJni(); - - /** - * Verify an ed25519 signature.<br> - * 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; - byte[] messageBuffer = null; - - 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 { - messageBuffer = aMessage.getBytes("UTF-8"); - errorMessage = verifyEd25519SignatureJni(aSignature.getBytes("UTF-8"), aFingerprintKey.getBytes("UTF-8"), messageBuffer); - } - } catch (Exception e) { - Log.e(LOG_TAG, "## verifyEd25519Signature(): failed " + e.getMessage()); - errorMessage = e.getMessage(); - } finally { - if (messageBuffer != null) { - Arrays.fill(messageBuffer, (byte) 0); - } - } - - 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).<br> - * 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) { - byte[] messageBuffer = null; - try { - messageBuffer = aMessageToHash.getBytes("UTF-8"); - hashRetValue = new String(sha256Jni(messageBuffer), "UTF-8"); - } catch (Exception e) { - Log.e(LOG_TAG, "## sha256(): failed " + e.getMessage()); - } finally { - if (null != messageBuffer) { - Arrays.fill(messageBuffer, (byte) 0); - } - } - } - - return hashRetValue; - } - - /** - * Compute the digest (SHA 256) for the message passed in parameter.<br> - * 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.<br> - * @return true the object resources have been released - */ - public boolean isReleased() { - return (0 == mNativeId); - } - - /** - * Build a string-string dictionary from a jsonObject.<br> - * @param jsonObject the object to parse - * @return the map - */ - public static Map<String, String> toStringMap(JSONObject jsonObject) { - if (null != jsonObject) { - HashMap<String, String> map = new HashMap<>(); - Iterator<String> 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.<br> - * @param jsonObject the object to parse - * @return the map - */ - public static Map<String, Map<String, String>> toStringMapMap(JSONObject jsonObject) { - if (null != jsonObject) { - HashMap<String, Map<String, String>> map = new HashMap<>(); - - Iterator<String> 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; - } -} - |