/*
*
* This file is part of the iText (R) project.
Copyright (c) 1998-2017 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.
* These activities include: offering paid services to customers as an ASP,
* serving PDFs on the fly in a web application, shipping iText with a closed
* source product.
*
* For more information, please contact iText Software Corp. at this
* address: sales@itextpdf.com
*/
package com.itextpdf.text.pdf.security;
import java.security.GeneralSecurityException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import org.bouncycastle.jcajce.provider.digest.*;
/**
* Implementation for digests accessed directly from the BouncyCastle library bypassing
* any provider definition.
*/
public class BouncyCastleDigest implements ExternalDigest {
public MessageDigest getMessageDigest(String hashAlgorithm) throws GeneralSecurityException {
String oid = DigestAlgorithms.getAllowedDigests(hashAlgorithm);
if (oid == null)
throw new NoSuchAlgorithmException(hashAlgorithm);
if (oid.equals("1.2.840.113549.2.2")) { //MD2
return new MD2.Digest();
}
else if (oid.equals("1.2.840.113549.2.5")) { //MD5
return new MD5.Digest();
}
else if (oid.equals("1.3.14.3.2.26")) { //SHA1
return new SHA1.Digest();
}
else if (oid.equals("2.16.840.1.101.3.4.2.4")) { //SHA224
return new SHA224.Digest();
}
else if (oid.equals("2.16.840.1.101.3.4.2.1")) { //SHA256
return new SHA256.Digest();
}
else if (oid.equals("2.16.840.1.101.3.4.2.2")) { //SHA384
return new SHA384.Digest();
}
else if (oid.equals("2.16.840.1.101.3.4.2.3")) { //SHA512
return new SHA512.Digest();
}
else if (oid.equals("1.3.36.3.2.2")) { //RIPEMD128
return new RIPEMD128.Digest();
}
else if (oid.equals("1.3.36.3.2.1")) { //RIPEMD160
return new RIPEMD160.Digest();
}
else if (oid.equals("1.3.36.3.2.3")) { //RIPEMD256
return new RIPEMD256.Digest();
}
else if (oid.equals("1.2.643.2.2.9")) { //GOST3411
return new GOST3411.Digest();
}
throw new NoSuchAlgorithmException(hashAlgorithm); //shouldn't get here
}
}