本文整理了Java中net.lingala.zip4j.crypto.engine.ZipCryptoEngine类的一些代码示例，展示了ZipCryptoEngine类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ZipCryptoEngine类的具体详情如下：
包路径：net.lingala.zip4j.crypto.engine.ZipCryptoEngine
类名称：ZipCryptoEngine

ZipCryptoEngine介绍

暂无

代码示例

代码示例来源：origin: net.lingala.zip4j/zip4j

public void updateKeys(byte charAt) {
  keys[0] = crc32(keys[0], charAt);
  keys[1] += keys[0] & 0xff;
  keys[1] = keys[1] * 134775813 + 1;
  keys[2] = crc32(keys[2], (byte) (keys[1] >> 24));
}

代码示例来源：origin: net.lingala.zip4j/zip4j

protected byte encryptByte(byte val) {
  byte temp_val = (byte) (val ^ zipCryptoEngine.decryptByte() & 0xff);
  zipCryptoEngine.updateKeys(val);
  return temp_val;
}

代码示例来源：origin: net.lingala.zip4j/zip4j

zipCryptoEngine.initKeys(fileHeader.getPassword());
    zipCryptoEngine.updateKeys((byte) (result ^ zipCryptoEngine.decryptByte()));
    if (i+1 != InternalZipConstants.STD_DEC_HDR_SIZE)
      result = headerBytes[i+1];

代码示例来源：origin: net.lingala.zip4j/zip4j

public StandardEncrypter(char[] password, int crc) throws ZipException {
  if (password == null || password.length <= 0) {
    throw new ZipException("input password is null or empty in standard encrpyter constructor");
  }
  
  this.zipCryptoEngine = new ZipCryptoEngine();
  
  this.headerBytes = new byte[InternalZipConstants.STD_DEC_HDR_SIZE];
  init(password, crc);
}

代码示例来源：origin: net.lingala.zip4j/zip4j

public void initKeys(char[] password) {
  keys[0] = 305419896;
  keys[1] = 591751049;
  keys[2] = 878082192;
  for (int i = 0; i < password.length; i++) {
    updateKeys((byte) (password[i] & 0xff));
  }
}

代码示例来源：origin: net.lingala.zip4j/zip4j

private void init(char[] password, int crc) throws ZipException {
  if (password == null || password.length <= 0) {
    throw new ZipException("input password is null or empty, cannot initialize standard encrypter");
  }
  zipCryptoEngine.initKeys(password);
  headerBytes = generateRandomBytes(InternalZipConstants.STD_DEC_HDR_SIZE);
  // Initialize again since the generated bytes were encrypted.
  zipCryptoEngine.initKeys(password);
  
  headerBytes[InternalZipConstants.STD_DEC_HDR_SIZE - 1] = (byte)((crc >>> 24));
  headerBytes[InternalZipConstants.STD_DEC_HDR_SIZE - 2] = (byte)((crc >>> 16));
  
  if (headerBytes.length < InternalZipConstants.STD_DEC_HDR_SIZE) {
    throw new ZipException("invalid header bytes generated, cannot perform standard encryption");
  }
  
  encryptData(headerBytes);
}

代码示例来源：origin: com.github.axet/zip4j

zipCryptoEngine.initKeys(fileHeader.getPassword());
    zipCryptoEngine.updateKeys((byte) (result ^ zipCryptoEngine.decryptByte()));
    if (i+1 != InternalZipConstants.STD_DEC_HDR_SIZE)
      result = headerBytes[i+1];

代码示例来源：origin: com.github.axet/zip4j

public StandardEncrypter(char[] password, int crc) throws ZipException {
  if (password == null || password.length <= 0) {
    throw new ZipException("input password is null or empty in standard encrpyter constructor");
  }
  
  this.zipCryptoEngine = new ZipCryptoEngine();
  
  this.headerBytes = new byte[InternalZipConstants.STD_DEC_HDR_SIZE];
  init(password, crc);
}

代码示例来源：origin: com.github.axet/zip4j

public void initKeys(char[] password) {
  keys[0] = 305419896;
  keys[1] = 591751049;
  keys[2] = 878082192;
  for (int i = 0; i < password.length; i++) {
    updateKeys((byte) (password[i] & 0xff));
  }
}

代码示例来源：origin: com.github.axet/zip4j

private void init(char[] password, int crc) throws ZipException {
  if (password == null || password.length <= 0) {
    throw new ZipException("input password is null or empty, cannot initialize standard encrypter");
  }
  zipCryptoEngine.initKeys(password);
  headerBytes = generateRandomBytes(InternalZipConstants.STD_DEC_HDR_SIZE);
  // Initialize again since the generated bytes were encrypted.
  zipCryptoEngine.initKeys(password);
  
  headerBytes[InternalZipConstants.STD_DEC_HDR_SIZE - 1] = (byte)((crc >>> 24));
  headerBytes[InternalZipConstants.STD_DEC_HDR_SIZE - 2] = (byte)((crc >>> 16));
  
  if (headerBytes.length < InternalZipConstants.STD_DEC_HDR_SIZE) {
    throw new ZipException("invalid header bytes generated, cannot perform standard encryption");
  }
  
  encryptData(headerBytes);
}

代码示例来源：origin: com.github.axet/zip4j

protected byte encryptByte(byte val) {
  byte temp_val = (byte) (val ^ zipCryptoEngine.decryptByte() & 0xff);
  zipCryptoEngine.updateKeys(val);
  return temp_val;
}

代码示例来源：origin: net.lingala.zip4j/zip4j

public StandardDecrypter(FileHeader fileHeader, byte[] headerBytes) throws ZipException{
  if (fileHeader == null) {
    throw new ZipException("one of more of the input parameters were null in StandardDecryptor");
  }
  
  this.fileHeader = fileHeader;
  this.zipCryptoEngine = new ZipCryptoEngine();
  init(headerBytes);
}

代码示例来源：origin: com.github.axet/zip4j

public void updateKeys(byte charAt) {
  keys[0] = crc32(keys[0], charAt);
  keys[1] += keys[0] & 0xff;
  keys[1] = keys[1] * 134775813 + 1;
  keys[2] = crc32(keys[2], (byte) (keys[1] >> 24));
}

代码示例来源：origin: net.lingala.zip4j/zip4j

public int decryptData(byte[] buff, int start, int len) throws ZipException {
  if (start < 0 || len < 0) {
    throw new ZipException("one of the input parameters were null in standard decrpyt data");
  }
  
  try {
    for (int i = start; i <  start + len; i++) {
      int val = buff[i] & 0xff;
      val = (val ^ zipCryptoEngine.decryptByte()) & 0xff;
      zipCryptoEngine.updateKeys((byte) val);
      buff[i] = (byte)val;
    }
    return len;
  } catch (Exception e) {
    throw new ZipException(e);
  }
}

代码示例来源：origin: com.github.axet/zip4j

public StandardDecrypter(FileHeader fileHeader, byte[] headerBytes) throws ZipException{
  if (fileHeader == null) {
    throw new ZipException("one of more of the input parameters were null in StandardDecryptor");
  }
  
  this.fileHeader = fileHeader;
  this.zipCryptoEngine = new ZipCryptoEngine();
  init(headerBytes);
}

代码示例来源：origin: com.github.axet/zip4j

public int decryptData(byte[] buff, int start, int len) throws ZipException {
  if (start < 0 || len < 0) {
    throw new ZipException("one of the input parameters were null in standard decrpyt data");
  }
  
  try {
    for (int i = start; i <  start + len; i++) {
      int val = buff[i] & 0xff;
      val = (val ^ zipCryptoEngine.decryptByte()) & 0xff;
      zipCryptoEngine.updateKeys((byte) val);
      buff[i] = (byte)val;
    }
    return len;
  } catch (Exception e) {
    throw new ZipException(e);
  }
}