/*
 * Copyright 2011-2016 the original author or authors.
 *
 * 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
 *
 *      https://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 org.springframework.security.crypto.keygen;

import org.springframework.security.crypto.codec.Hex;

/**
 * A StringKeyGenerator that generates hex-encoded String keys. Delegates to a
 * {@link BytesKeyGenerator} for the actual key generation.
 *
 * @author Keith Donald
 */
final class HexEncodingStringKeyGenerator implements StringKeyGenerator {

	private final BytesKeyGenerator keyGenerator;

	HexEncodingStringKeyGenerator(BytesKeyGenerator keyGenerator) {
		this.keyGenerator = keyGenerator;
	}

	@Override
	public String generateKey() {
		return new String(Hex.encode(this.keyGenerator.generateKey()));
	}

}
