| // 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.Aead'); |
| |
| /** |
| * Interface for Authenticated Encryption with Associated Data (AEAD). |
| * |
| * Security guarantees: Implementations of this interface are secure against |
| * adaptive chosen ciphertext attacks. Encryption with associated data ensures |
| * authenticity (who the sender is) and integrity (the data has not been |
| * tampered with) of that data, but not its secrecy. |
| * |
| * @see https://tools.ietf.org/html/rfc5116 |
| * @record |
| */ |
| class Aead { |
| /** |
| * Encrypts `plaintext` with `opt_associatedData` as associated authenticated |
| * data. The resulting ciphertext allows for checking authenticity and |
| * integrity of associated data, but does not guarantee its secrecy. |
| * |
| * @param {!Uint8Array} plaintext the plaintext to be encrypted. It must be |
| * non-null, but can also be an empty (zero-length) byte array. |
| * @param {?Uint8Array=} opt_associatedData optional associated data to be |
| * authenticated, but not encrypted. A null value is equivalent to an |
| * empty (zero-length) byte array. For successful decryption the same |
| * associated data must be provided along with the ciphertext. |
| * @return {!Promise.<!Uint8Array>} resulting ciphertext |
| * |
| */ |
| encrypt(plaintext, opt_associatedData) {} |
| |
| /** |
| * Decrypts ciphertext with associated authenticated data. |
| * The decryption verifies the authenticity and integrity of the associated |
| * data, but there are no guarantees wrt. secrecy of that data. |
| * |
| * @param {!Uint8Array} ciphertext the ciphertext to be decrypted, must be |
| * non-null. |
| * @param {?Uint8Array=} opt_associatedData optional associated data to be |
| * authenticated. A null value is equivalent to an empty (zero-length) |
| * byte array. For successful decryption the same associated data must be |
| * provided along with the ciphertext. |
| * @return {!Promise.<!Uint8Array>} resulting plaintext |
| */ |
| decrypt(ciphertext, opt_associatedData) {} |
| } |
| |
| exports = Aead; |