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/*
 * $Id: ddc1d5f57f821f6db2170bfe2bd405097d4116e3 $
 *
 * 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.
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 * Boston, MA, 02110-1301 USA, or download the license from the following URL:
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 * Section 5 of the GNU Affero General Public License.
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 * a covered work must retain the producer line in every PDF that is created
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package com.itextpdf.text.pdf.security;

import java.util.HashMap;

/**
 * Class that contains a map with the different encryption algorithms.
 */
public class EncryptionAlgorithms {

	/** Maps IDs of encryption algorithms with its human-readable name. */
	static final HashMap algorithmNames = new HashMap();

	static {
        algorithmNames.put("1.2.840.113549.1.1.1", "RSA");
        algorithmNames.put("1.2.840.10040.4.1", "DSA");
        algorithmNames.put("1.2.840.113549.1.1.2", "RSA");
        algorithmNames.put("1.2.840.113549.1.1.4", "RSA");
        algorithmNames.put("1.2.840.113549.1.1.5", "RSA");
        algorithmNames.put("1.2.840.113549.1.1.14", "RSA");
        algorithmNames.put("1.2.840.113549.1.1.11", "RSA");
        algorithmNames.put("1.2.840.113549.1.1.12", "RSA");
        algorithmNames.put("1.2.840.113549.1.1.13", "RSA");
        algorithmNames.put("1.2.840.10040.4.3", "DSA");
        algorithmNames.put("2.16.840.1.101.3.4.3.1", "DSA");
        algorithmNames.put("2.16.840.1.101.3.4.3.2", "DSA");
        algorithmNames.put("1.3.14.3.2.29", "RSA");
        algorithmNames.put("1.3.36.3.3.1.2", "RSA");
        algorithmNames.put("1.3.36.3.3.1.3", "RSA");
        algorithmNames.put("1.3.36.3.3.1.4", "RSA");
        algorithmNames.put("1.2.643.2.2.19", "ECGOST3410");
	}

	/**
	 * Gets the algorithm name for a certain id.
	 * @param oid	an id (for instance "1.2.840.113549.1.1.1")
	 * @return	an algorithm name (for instance "RSA")
	 */
	public static String getAlgorithm(String oid) {
	    String ret = algorithmNames.get(oid);
	    if (ret == null)
	        return oid;
	    else
	        return ret;
	}
}