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// Copyright 2012 The Closure Library Authors. All Rights Reserved.
//
// 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.
/**
* @fileoverview Interface definition of a block cipher. A block cipher is a
* pair of algorithms that implement encryption and decryption of input bytes.
*
* @see http://en.wikipedia.org/wiki/Block_cipher
*
* @author nnaze@google.com (Nathan Naze)
*/
goog.provide('goog.crypt.BlockCipher');
/**
* Interface definition for a block cipher.
* @interface
*/
goog.crypt.BlockCipher = function() {};
/**
* Block size, in bytes.
* @type {number}
* @const
* @public
*/
goog.crypt.BlockCipher.prototype.BLOCK_SIZE;
/**
* Encrypt a plaintext block. The implementation may expect (and assert)
* a particular block length.
* @param {!Array<number>|!Uint8Array} input Plaintext array of input bytes.
* @return {!Array<number>} Encrypted ciphertext array of bytes. Should be the
* same length as input.
*/
goog.crypt.BlockCipher.prototype.encrypt;
/**
* Decrypt a plaintext block. The implementation may expect (and assert)
* a particular block length.
* @param {!Array<number>|!Uint8Array} input Ciphertext. Array of input bytes.
* @return {!Array<number>} Decrypted plaintext array of bytes. Should be the
* same length as input.
*/
goog.crypt.BlockCipher.prototype.decrypt;
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