| // Copyright 2020 Google LLC |
| // |
| // 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 com.google.crypto.tink.prf; |
| |
| import com.google.crypto.tink.config.TinkFips; |
| import java.security.GeneralSecurityException; |
| |
| /** |
| * Static methods and registering with the {@link Registry} all instances of {@link |
| * com.google.crypto.tink.subtle.prf.StreamingPrf} key types supported in a particular release of |
| * Tink. |
| */ |
| public final class PrfConfig { |
| public static final String PRF_TYPE_URL = new HkdfPrfKeyManager().getKeyType(); |
| |
| /** |
| * Tries to register with the {@link Registry} all instances of {@link |
| * com.google.crypto.tink.KeyManager} needed to handle Prf key types supported in Tink. |
| */ |
| public static void register() throws GeneralSecurityException { |
| PrfSetWrapper.register(); |
| HmacPrfKeyManager.register(/*newKeyAllowed=*/ true); |
| |
| if (TinkFips.useOnlyFips()) { |
| // If Tink is built in FIPS-mode do not register algorithms which are not compatible. |
| return; |
| } |
| |
| AesCmacPrfKeyManager.register(/*newKeyAllowed=*/ true); |
| HkdfPrfKeyManager.register(/*newKeyAllowed=*/ true); |
| } |
| |
| private PrfConfig() {} |
| } |