2 * ============LICENSE_START=======================================================
4 * ================================================================================
5 * Copyright (C) 2017 AT&T Intellectual Property. All rights reserved.
6 * ================================================================================
7 * Modifications Copyright (c) 2019 Samsung
8 * ================================================================================
9 * Licensed under the Apache License, Version 2.0 (the "License");
10 * you may not use this file except in compliance with the License.
11 * You may obtain a copy of the License at
13 * http://www.apache.org/licenses/LICENSE-2.0
15 * Unless required by applicable law or agreed to in writing, software
16 * distributed under the License is distributed on an "AS IS" BASIS,
17 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
18 * See the License for the specific language governing permissions and
19 * limitations under the License.
20 * ============LICENSE_END=========================================================
23 package org.onap.so.utils;
26 import com.google.common.base.Strings;
27 import org.onap.so.logger.ErrorCode;
28 import org.onap.so.logger.MessageEnum;
29 import org.slf4j.Logger;
30 import org.slf4j.LoggerFactory;
31 import javax.crypto.Cipher;
32 import javax.crypto.spec.GCMParameterSpec;
33 import javax.crypto.spec.SecretKeySpec;
34 import java.security.GeneralSecurityException;
35 import java.security.SecureRandom;
36 import java.util.Arrays;
40 * CryptoUtils adapted from RTTP client.
43 public final class CryptoUtils {
45 private static final Logger logger = LoggerFactory.getLogger(CryptoUtils.class);
48 private static final String AES = "AES";
49 private static final String CLOUD_KEY = "aa3871669d893c7fb8abbcda31b88b4f";
50 private static final int GCM_TAG_LENGTH = 16;
51 private static final int GCM_IV_LENGTH = 12;
52 private static final String AES_GCM_NO_PADDING = "AES/GCM/NoPadding";
55 * encrypt a value and generate a keyfile if the keyfile is not found then a new one is created
57 * @throws GeneralSecurityException
59 public static String encrypt(String value, String keyString) throws GeneralSecurityException {
60 SecretKeySpec sks = getSecretKeySpec(keyString);
61 Cipher cipher = Cipher.getInstance(AES_GCM_NO_PADDING);
62 byte[] initVector = new byte[GCM_IV_LENGTH];
63 (new SecureRandom()).nextBytes(initVector);
64 GCMParameterSpec spec = new GCMParameterSpec(GCM_TAG_LENGTH * java.lang.Byte.SIZE, initVector);
65 cipher.init(Cipher.ENCRYPT_MODE, sks, spec);
66 byte[] encoded = value.getBytes(java.nio.charset.StandardCharsets.UTF_8);
67 byte[] cipherText = new byte[initVector.length + cipher.getOutputSize(encoded.length)];
68 System.arraycopy(initVector, 0, cipherText, 0, initVector.length);
69 cipher.doFinal(encoded, 0, encoded.length, cipherText, initVector.length);
70 return byteArrayToHexString(cipherText);
76 * @throws GeneralSecurityException
78 public static String decrypt(String message, String keyString) throws GeneralSecurityException {
79 SecretKeySpec sks = getSecretKeySpec(keyString);
80 byte[] cipherText = hexStringToByteArray(message);
81 Cipher cipher = Cipher.getInstance(AES_GCM_NO_PADDING);
82 byte[] initVector = Arrays.copyOfRange(cipherText, 0, GCM_IV_LENGTH);
83 GCMParameterSpec spec = new GCMParameterSpec(GCM_TAG_LENGTH * java.lang.Byte.SIZE, initVector);
84 cipher.init(Cipher.DECRYPT_MODE, sks, spec);
85 byte[] plaintext = cipher.doFinal(cipherText, GCM_IV_LENGTH, cipherText.length - GCM_IV_LENGTH);
86 return new String(plaintext);
89 public static String encryptCloudConfigPassword(String message) {
91 return CryptoUtils.encrypt(message, CLOUD_KEY);
92 } catch (GeneralSecurityException e) {
93 logger.error(Strings.repeat("{} ", 3), MessageEnum.RA_GENERAL_EXCEPTION.toString(),
94 ErrorCode.BusinessProcesssError.getValue(), "Exception in encryptPassword ", e);
99 public static String decryptCloudConfigPassword(String message) {
101 return CryptoUtils.decrypt(message, CLOUD_KEY);
102 } catch (GeneralSecurityException e) {
103 logger.error(Strings.repeat("{} ", 3), MessageEnum.RA_GENERAL_EXCEPTION.toString(),
104 ErrorCode.BusinessProcesssError.getValue(), "Exception in encryptPassword ", e);
109 private static SecretKeySpec getSecretKeySpec(String keyString) {
110 byte[] key = hexStringToByteArray(keyString);
111 return new SecretKeySpec(key, AES);
114 public static String byteArrayToHexString(byte[] b) {
115 StringBuilder sb = new StringBuilder(b.length * 2);
121 sb.append(Integer.toHexString(v));
123 return sb.toString().toUpperCase();
126 private static byte[] hexStringToByteArray(String s) {
127 byte[] b = new byte[s.length() / 2];
128 for (int i = 0; i < b.length; i++) {
130 int v = Integer.parseInt(s.substring(index, index + 2), 16);