content: /*
   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
   ~                                                                               ~
   ~ The MIT License (MIT)                                                         ~
   ~                                                                               ~
   ~ Copyright (c) 2015-2025 miaixz.org and other contributors.                    ~
   ~                                                                               ~
   ~ Permission is hereby granted, free of charge, to any person obtaining a copy  ~
   ~ of this software and associated documentation files (the "Software"), to deal ~
   ~ in the Software without restriction, including without limitation the rights  ~
   ~ to use, copy, modify, merge, publish, distribute, sublicense, and/or sell     ~
   ~ copies of the Software, and to permit persons to whom the Software is         ~
   ~ furnished to do so, subject to the following conditions:                      ~
   ~                                                                               ~
   ~ The above copyright notice and this permission notice shall be included in    ~
   ~ all copies or substantial portions of the Software.                           ~
   ~                                                                               ~
   ~ THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR    ~
   ~ IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,      ~
   ~ FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE   ~
   ~ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER        ~
   ~ LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, ~
   ~ OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN     ~
   ~ THE SOFTWARE.                                                                 ~
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   ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
  */
  package org.miaixz.bus.crypto.center;
  
  /**
   * 维吉尼亚密码实现。 人们在恺撒移位密码的基础上扩展出多表密码，称为维吉尼亚密码。 算法实现来自：https://github.com/zhaorenjie110/SymmetricEncryptionAndDecryption
   *
   * @author Kimi Liu
   * @since Java 17+
   */
  public class Vigenere {
  
      /**
       * 加密
       *
       * @param data      数据
       * @param cipherKey 密钥
       * @return 密文
       */
      public static String encrypt(final CharSequence data, final CharSequence cipherKey) {
          final int dataLen = data.length();
          final int cipherKeyLen = cipherKey.length();
  
          final char[] cipherArray = new char[dataLen];
          for (int i = 0; i < dataLen / cipherKeyLen + 1; i++) {
              for (int t = 0; t < cipherKeyLen; t++) {
                  if (t + i * cipherKeyLen < dataLen) {
                      final char dataChar = data.charAt(t + i * cipherKeyLen);
                      final char cipherKeyChar = cipherKey.charAt(t);
                      cipherArray[t + i * cipherKeyLen] = (char) ((dataChar + cipherKeyChar - 64) % 95 + 32);
                  }
              }
          }
  
          return String.valueOf(cipherArray);
      }
  
      /**
       * 解密
       *
       * @param data      密文
       * @param cipherKey 密钥
       * @return 明文
       */
      public static String decrypt(final CharSequence data, final CharSequence cipherKey) {
          final int dataLen = data.length();
          final int cipherKeyLen = cipherKey.length();
  
          final char[] clearArray = new char[dataLen];
          for (int i = 0; i < dataLen; i++) {
              for (int t = 0; t < cipherKeyLen; t++) {
                  if (t + i * cipherKeyLen < dataLen) {
                      final char dataChar = data.charAt(t + i * cipherKeyLen);
                      final char cipherKeyChar = cipherKey.charAt(t);
                      if (dataChar - cipherKeyChar >= 0) {
                          clearArray[t + i * cipherKeyLen] = (char) ((dataChar - cipherKeyChar) % 95 + 32);
                      } else {
                          clearArray[t + i * cipherKeyLen] = (char) ((dataChar - cipherKeyChar + 95) % 95 + 32);
                      }
                  }
              }
          }
          return String.valueOf(clearArray);
      }
  
  }
  