com.itextpdf.text.pdf.security.ExternalSignatureContainer Maven / Gradle / Ivy
/*
* $Id: 55733c566ed4653ba8fbafd216743fe752bf3949 $
*
* This file is part of the iText (R) project.
* Copyright (c) 1998-2016 iText Group NV
* Authors: Bruno Lowagie, Paulo Soares, et al.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License version 3
* as published by the Free Software Foundation with the addition of the
* following permission added to Section 15 as permitted in Section 7(a):
* FOR ANY PART OF THE COVERED WORK IN WHICH THE COPYRIGHT IS OWNED BY
* ITEXT GROUP. ITEXT GROUP DISCLAIMS THE WARRANTY OF NON INFRINGEMENT
* OF THIRD PARTY RIGHTS
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.
* See the GNU Affero General Public License for more details.
* You should have received a copy of the GNU Affero General Public License
* along with this program; if not, see http://www.gnu.org/licenses or write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA, 02110-1301 USA, or download the license from the following URL:
* http://itextpdf.com/terms-of-use/
*
* The interactive user interfaces in modified source and object code versions
* of this program must display Appropriate Legal Notices, as required under
* Section 5 of the GNU Affero General Public License.
*
* In accordance with Section 7(b) of the GNU Affero General Public License,
* a covered work must retain the producer line in every PDF that is created
* or manipulated using iText.
*
* You can be released from the requirements of the license by purchasing
* a commercial license. Buying such a license is mandatory as soon as you
* develop commercial activities involving the iText software without
* disclosing the source code of your own applications.
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package com.itextpdf.text.pdf.security;
import com.itextpdf.text.pdf.PdfDictionary;
import java.io.InputStream;
import java.security.GeneralSecurityException;
/**
* Interface to sign a document. The signing is fully done externally, including the container composition.
* @author Paulo Soares
*/
public interface ExternalSignatureContainer {
/**
* Produces the container with the signature.
* @param data the data to sign
* @return a container with the signature and other objects, like CRL and OCSP. The container will generally be a PKCS7 one.
* @throws GeneralSecurityException
*/
public byte[] sign(InputStream data) throws GeneralSecurityException;
/**
* Modifies the signature dictionary to suit the container. At least the keys PdfName.FILTER and
* PdfName.SUBFILTER will have to be set.
* @param signDic the signature dictionary
*/
public void modifySigningDictionary(PdfDictionary signDic);
}