| // Copyright 2021 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.config; |
| |
| /** |
| * Static methods for checking if Tink was built in FIPS mode and to check for algorithm |
| * compatibility. |
| */ |
| public final class TinkFips { |
| /** The status of FIPS compatibility of an algorithm. */ |
| public enum AlgorithmFipsCompatibility { |
| /** The algorithm is not FIPS compatible */ |
| ALGORITHM_NOT_FIPS { |
| @Override |
| public boolean isCompatible() { |
| // Non-FIPS algorithms are only allowed if Tink is not built in FIPS-only mode. |
| return !TinkFipsStatus.useOnlyFips(); |
| } |
| }, |
| /** The algorithm has a FIPS validated implementation if BoringCrypto is available. */ |
| ALGORITHM_REQUIRES_BORINGCRYPTO { |
| @Override |
| public boolean isCompatible() { |
| // If Tink is not in FIPS-only mode, then no restrictions are necessary. In FIPS-only mode |
| // this returns True if BoringCrypto is available. |
| return !TinkFipsStatus.useOnlyFips() || TinkFipsStatus.fipsModuleAvailable(); |
| } |
| }; |
| |
| public abstract boolean isCompatible(); |
| } |
| |
| public static boolean useOnlyFips() { |
| return TinkFipsStatus.useOnlyFips(); |
| } |
| |
| public static boolean fipsModuleAvailable() { |
| return TinkFipsStatus.fipsModuleAvailable(); |
| } |
| |
| private TinkFips() {} |
| } |