/** Sets the encryption options for this document. The userPassword and the
* ownerPassword can be null or have zero length. In this case the ownerPassword
* is replaced by a random string. The open permissions for the document can be
* AllowPrinting, AllowModifyContents, AllowCopy, AllowModifyAnnotations,
* AllowFillIn, AllowScreenReaders, AllowAssembly and AllowDegradedPrinting.
* The permissions can be combined by ORing them.
* @param userPassword the user password. Can be null or empty
* @param ownerPassword the owner password. Can be null or empty
* @param permissions the user permissions
* @param encryptionType the type of encryption. It can be one of STANDARD_ENCRYPTION_40, STANDARD_ENCRYPTION_128 or ENCRYPTION_AES128.
* Optionally DO_NOT_ENCRYPT_METADATA can be ored to output the metadata in cleartext
* @throws DocumentException if the document is already open
*/
public void SetEncryption(byte[] userPassword, byte[] ownerPassword, int permissions, int encryptionType)
{
if (stamper.IsAppend())
{
throw new DocumentException(MessageLocalization.GetComposedMessage("append.mode.does.not.support.changing.the.encryption.status"));
}
if (stamper.ContentWritten)
{
throw new DocumentException(MessageLocalization.GetComposedMessage("content.was.already.written.to.the.output"));
}
stamper.SetEncryption(userPassword, ownerPassword, permissions, encryptionType);
}
/** Sets the encryption options for this document. The userPassword and the
* ownerPassword can be null or have zero length. In this case the ownerPassword
* is replaced by a random string. The open permissions for the document can be
* AllowPrinting, AllowModifyContents, AllowCopy, AllowModifyAnnotations,
* AllowFillIn, AllowScreenReaders, AllowAssembly and AllowDegradedPrinting.
* The permissions can be combined by ORing them.
* @param userPassword the user password. Can be null or empty
* @param ownerPassword the owner password. Can be null or empty
* @param permissions the user permissions
* @param encryptionType the type of encryption. It can be one of STANDARD_ENCRYPTION_40, STANDARD_ENCRYPTION_128 or ENCRYPTION_AES128.
* Optionally DO_NOT_ENCRYPT_METADATA can be ored to output the metadata in cleartext
* @throws DocumentException if the document is already open
*/
public void SetEncryption(byte[] userPassword, byte[] ownerPassword, int permissions, int encryptionType)
{
if (stamper.IsAppend())
{
throw new DocumentException("Append mode does not support changing the encryption status.");
}
if (stamper.ContentWritten)
{
throw new DocumentException("Content was already written to the output.");
}
stamper.SetEncryption(userPassword, ownerPassword, permissions, encryptionType);
}