| // Copyright 2018 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 tink |
| |
| /* |
| AEAD is the interface for authenticated encryption with associated data. |
| Implementations of this interface are secure against adaptive chosen ciphertext attacks. |
| Encryption with associated data ensures authenticity and integrity of that data, but not |
| its secrecy. (see RFC 5116, https://tools.ietf.org/html/rfc5116) |
| */ |
| type AEAD interface { |
| // Encrypt encrypts plaintext with associatedData as associated data. |
| // The resulting ciphertext allows for checking authenticity and integrity of associated data |
| // associatedData, but does not guarantee its secrecy. |
| Encrypt(plaintext, associatedData []byte) ([]byte, error) |
| |
| // Decrypt decrypts ciphertext with associatedData as associated data. |
| // The decryption verifies the authenticity and integrity of the associated data, but there are |
| // no guarantees with respect to secrecy of that data. |
| Decrypt(ciphertext, associatedData []byte) ([]byte, error) |
| } |