net.siisise.security.mac.KMAC128 Maven / Gradle / Ivy
/*
* Copyright 2021 Siisise Net.
*
* 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 net.siisise.security.mac;
/**
* KECCAK Message Authentication Code.
* SHA-3系に用意されているらしい標準MAC
* NIST SP 800-185
* KMAC128(K, X, L, S)
* K is a bit string of any length, including zero.
* K 鍵
* X is the main input bit string.
* X 主データ update や sign で突っ込む
* L is an integer representing the requested output length in bits.
* L 出力長bit
* S is an optional customization bit string of any length, including zero.
* S カスタム付加ビット
*
*/
public class KMAC128 extends KMAC implements MAC {
public KMAC128() {
}
/**
* 出力サイズ256bit固定. HMAC等の代用
*
* @param key K 鍵
*/
@Override
public void init(byte[] key) {
init(key, 256, "");
}
/**
* 可変出力初期化.
*
* @param key key bit string 鍵 len(key) < 2^2040
* @param length XOF出力サイズ 0 <= L < 2^2040 bit
* @param S オプションで設定可能な空文字列を含む可変長文字列. optional customization bit string of any length, including zero. len(S) < 2^2040
*/
@Override
public void init(byte[] key, int length, String S) {
init(128,key,length,S);
}
}