// TODO - zipEntry might use extended local header
protected void add(ZipEntry zipEntry, ZipFileEntryInputStream zipData, String password)
throws IOException, UnsupportedEncodingException {
AESEncrypter aesEncrypter = new AESEncrypterBC(password.getBytes("iso-8859-1"));
ExtZipEntry entry = new ExtZipEntry(zipEntry.getName());
entry.setMethod(zipEntry.getMethod());
entry.setSize(zipEntry.getSize());
entry.setCompressedSize(zipEntry.getCompressedSize() + 28);
entry.setTime(zipEntry.getTime());
entry.initEncryptedEntry();
zipOS.putNextEntry(entry);
// ZIP-file data contains: 1. salt 2. pwVerification 3. encryptedContent 4. authenticationCode
zipOS.writeBytes(aesEncrypter.getSalt());
zipOS.writeBytes(aesEncrypter.getPwVerification());
byte[] data = new byte[1024];
int read = zipData.read(data);
while (read != -1) {
aesEncrypter.encrypt(data, read);
zipOS.writeBytes(data, 0, read);
read = zipData.read(data);
}
byte[] finalAuthentication = aesEncrypter.getFinalAuthentication();
if (LOG.isLoggable(Level.FINE)) {
LOG.fine(
"finalAuthentication="
+ Arrays.toString(finalAuthentication)
+ " at pos="
+ zipOS.getWritten());
}
zipOS.writeBytes(finalAuthentication);
}
/**
* Add un-encrypted + un-zipped InputStream contents as file "name" to encrypted zip file.
*
* @param name of the new zipEntry within the zip file
* @param is provides the data to be added
* @param password to be used for encryption
*/
public void add(String name, InputStream is, String password)
throws IOException, UnsupportedEncodingException {
AESEncrypter aesEncrypter = new AESEncrypterBC(password.getBytes("iso-8859-1"));
// Compress contents of inputStream and report on bytes read
// we need to first compress to know details of entry
ByteArrayOutputStream bos = new ByteArrayOutputStream();
DeflaterOutputStream dos = new DeflaterOutputStream(bos, new Deflater(9, true), 8 * 1024);
int read = 0;
long inputLen = 0;
byte[] buf = new byte[8 * 1024];
while ((read = is.read(buf)) > 0) {
inputLen += read;
dos.write(buf, 0, read);
}
dos.close();
byte[] data = bos.toByteArray();
ExtZipEntry entry = new ExtZipEntry(name);
entry.setMethod(ZipEntry.DEFLATED);
entry.setSize(inputLen);
entry.setCompressedSize(data.length + 28);
entry.setTime((new java.util.Date()).getTime());
entry.initEncryptedEntry();
zipOS.putNextEntry(entry);
// ZIP-file data contains: 1. salt 2. pwVerification 3. encryptedContent 4. authenticationCode
zipOS.writeBytes(aesEncrypter.getSalt());
zipOS.writeBytes(aesEncrypter.getPwVerification());
aesEncrypter.encrypt(data, data.length);
zipOS.writeBytes(data, 0, data.length);
byte[] finalAuthentication = aesEncrypter.getFinalAuthentication();
if (LOG.isLoggable(Level.FINE)) {
LOG.fine(
"finalAuthentication="
+ Arrays.toString(finalAuthentication)
+ " at pos="
+ zipOS.getWritten());
}
zipOS.writeBytes(finalAuthentication);
}
