| // 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. |
| // |
| //////////////////////////////////////////////////////////////////////////////// |
| |
| goog.module('tink.subtle.IndCpaCipher'); |
| |
| const {SecurityException} = goog.require('google3.third_party.tink.javascript.exception.security_exception'); |
| |
| /** |
| * Interface for symmetric key ciphers that are indistinguishable against |
| * chosen-plaintext attacks. |
| * |
| * Security guarantees: implementation of this interface do not provide |
| * authentication, thus should not be used directly, but only to construct safer |
| * primitives such as {@link tink.Aead}. |
| * |
| * @protected |
| * @record |
| */ |
| class IndCpaCipher { |
| /** |
| * Encrypts `plaintext`. |
| * |
| * @param {!Uint8Array} plaintext the plaintext to be encrypted. It must be |
| * non-null, but can also be an empty (zero-length) byte array. |
| * @return {!Promise.<!Uint8Array>} resulting ciphertext |
| * @throws {SecurityException} |
| */ |
| encrypt(plaintext) {} |
| |
| /** |
| * Decrypts ciphertext with associated authenticated data. |
| * |
| * @param {!Uint8Array} ciphertext the ciphertext to be decrypted, must be |
| * non-null. |
| * @return {!Promise.<!Uint8Array>} resulting plaintext |
| * @throws {SecurityException} |
| */ |
| decrypt(ciphertext) {} |
| } |
| |
| exports = IndCpaCipher; |