1 // Copyright 2023 Google LLC 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); 4 // you may not use this file except in compliance with the License. 5 // You may obtain a copy of the License at 6 // 7 // http://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, 11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 12 // See the License for the specific language governing permissions and 13 // limitations under the License. 14 // 15 //////////////////////////////////////////////////////////////////////////////// 16 17 package com.google.crypto.tink.hybrid; 18 19 import com.google.crypto.tink.Key; 20 import com.google.crypto.tink.util.Bytes; 21 import com.google.errorprone.annotations.Immutable; 22 23 /** Representation of the encryption function for a hybrid encryption primitive. */ 24 @Immutable 25 public abstract class HybridPublicKey extends Key { 26 /** 27 * Returns a {@link Bytes} instance, which is prefixed to every ciphertext. 28 */ getOutputPrefix()29 public abstract Bytes getOutputPrefix(); 30 31 @Override getParameters()32 public abstract HybridParameters getParameters(); 33 } 34