| /*~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ |
| ~ Licensed to the Apache Software Foundation (ASF) under one |
| ~ or more contributor license agreements. See the NOTICE file |
| ~ distributed with this work for additional information |
| ~ regarding copyright ownership. The ASF licenses this file |
| ~ to you 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.apache.sling.graphql.core.hash; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.security.MessageDigest; |
| import java.security.NoSuchAlgorithmException; |
| |
| import org.apache.sling.graphql.api.SlingGraphQLException; |
| import org.jetbrains.annotations.NotNull; |
| |
| public class SHA256Hasher { |
| |
| private SHA256Hasher() { |
| } |
| |
| @NotNull |
| public static String getHash(@NotNull String message) { |
| StringBuilder buffer = new StringBuilder(); |
| try { |
| MessageDigest digest = MessageDigest.getInstance("SHA-256"); |
| byte[] hash = digest.digest(message.getBytes(StandardCharsets.UTF_8)); |
| |
| for (byte b : hash) { |
| String hex = Integer.toHexString(0xff & b); |
| if (hex.length() == 1) { |
| buffer.append('0'); |
| } |
| buffer.append(hex); |
| } |
| } catch (NoSuchAlgorithmException e) { |
| throw new SlingGraphQLException("Failed hashing message.", e); |
| } |
| return buffer.toString(); |
| } |
| } |
| |