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// 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) {}
}
goog.exportSymbol('tink.Aead', Aead);