io.github.panxiaochao.crypto.keygen.SharedKeyGenerator Maven / Gradle / Ivy

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/*
 * Copyright © 2022-2024 Lypxc ([email protected])
 *
 * 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 io.github.panxiaochao.crypto.keygen;

/**
 * 
 * 密钥生成器，每次只返回相同的密钥.
 * 
 *
 * @author Lypxc
 * @since 2024-07-25
 * @version 1.0
 */
public class SharedKeyGenerator implements BytesKeyGenerator {

	private final byte[] sharedKey;

	SharedKeyGenerator(int keySize) {
		this.sharedKey = new BytesKeySecureRandomGenerator(keySize).generateKey();
	}

	/**
	 * Get the length, in bytes, of keys created by this generator. Most unique keys are
	 * at least 16 bytes in length.
	 */
	@Override
	public int getKeySize() {
		return this.sharedKey.length;
	}

	/**
	 * Generate a new key.
	 */
	@Override
	public byte[] generateKey() {
		return this.sharedKey;
	}

}