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 17 package com.android.cobalt.crypto; 18 19 20 /** The API for providing Hybrid Public Key Encryption (HPKE) to Cobalt. */ 21 public interface HpkeEncrypt { 22 23 /** 24 * Encrypt a byte string using HPKE. 25 * 26 * @param publicKey the public key to use for encryption 27 * @param plainText the plain text string to encrypt 28 * @param contextInfo the HPKE associated data 29 * @return the encrypted ciphertext 30 */ encrypt(byte[] publicKey, byte[] plainText, byte[] contextInfo)31 byte[] encrypt(byte[] publicKey, byte[] plainText, byte[] contextInfo); 32 } 33