1 /* 2 * Copyright (C) 2023 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.adservices.cobalt; 17 18 import static com.android.adservices.cobalt.CobaltConstants.DEFAULT_API_KEY; 19 20 import com.google.common.io.BaseEncoding; 21 import com.google.protobuf.ByteString; 22 23 import java.util.Objects; 24 25 /** Static data and functions related to Cobalt API keys. */ 26 public final class CobaltApiKeys { 27 /** Copy an API key from a base-16 encoded hex string. */ copyFromHexApiKey(String apiKey)28 static ByteString copyFromHexApiKey(String apiKey) { 29 Objects.requireNonNull(apiKey); 30 return apiKey.equals(DEFAULT_API_KEY) 31 ? ByteString.copyFromUtf8(apiKey) 32 : ByteString.copyFrom(BaseEncoding.base16().lowerCase().decode(apiKey)); 33 } 34 CobaltApiKeys()35 private CobaltApiKeys() { 36 throw new UnsupportedOperationException("Contains only static members"); 37 } 38 } 39