* The API remains backward compatible with previous versions.
 * </p>
 *
 * @author higa
 */
public abstract class Base64Util {

    /**
     * Do not instantiate.
     */
    protected Base64Util() {
    }

    /**
     * Encodes data in Base64.
     * <p>
     * This method uses {@link java.util.Base64.Encoder} for encoding.
     * </p>
     *

     */
    public void testEncode() throws Exception {
        assertEquals("1", ENCODED_DATA, Base64Util.encode(BINARY_DATA));
        System.out.println(Base64Util.encode(new byte[] { 'a', 'b', 'c' }));
    }

    /**
     * @throws Exception
     */
    public void testDecode() throws Exception {
        final byte[] decodedData = Base64Util.decode(ENCODED_DATA);
        assertEquals("1", BINARY_DATA.length, decodedData.length);

 */
package org.codelibs.core.convert;

import static org.codelibs.core.lang.StringUtil.isEmpty;

import java.text.DecimalFormat;
import java.text.SimpleDateFormat;

import org.codelibs.core.misc.Base64Util;

/**
 * Utility class for conversions related to {@link String}.
 *
 * @author higa
 */
public abstract class StringConversionUtil {

    /**
     * Do not instantiate.
     */

 * governing permissions and limitations under the License.
 */
package org.codelibs.fess.crawler.entity;

import java.io.IOException;
import java.util.Map;

import org.codelibs.core.misc.Base64Util;
import org.codelibs.fess.crawler.exception.OpenSearchAccessException;
import org.opensearch.core.xcontent.ToXContent;
import org.opensearch.core.xcontent.XContentBuilder;

/**

import org.codelibs.core.exception.NoSuchAlgorithmRuntimeException;
import org.codelibs.core.exception.NoSuchPaddingRuntimeException;
import org.codelibs.core.exception.UnsupportedEncodingRuntimeException;
import org.codelibs.core.misc.Base64Util;

/**
 * A high-performance utility class for encrypting and decrypting data using cached {@link Cipher} instances.
 * <p>
 * This class provides efficient encryption/decryption by pooling and reusing cipher instances,