StandardDecryption.java

/*
 * $Id: StandardDecryption.java 3117 2008-01-31 05:53:22Z xlv $
 *
 * Copyright 2006 Paulo Soares
 *
 * The contents of this file are subject to the Mozilla Public License Version 1.1
 * (the "License"); you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the License.
 *
 * The Original Code is 'iText, a free JAVA-PDF library'.
 *
 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
 * All Rights Reserved.
 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
 *
 * Contributor(s): all the names of the contributors are added in the source code
 * where applicable.
 *
 * Alternatively, the contents of this file may be used under the terms of the
 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
 * provisions of LGPL are applicable instead of those above.  If you wish to
 * allow use of your version of this file only under the terms of the LGPL
 * License and not to allow others to use your version of this file under
 * the MPL, indicate your decision by deleting the provisions above and
 * replace them with the notice and other provisions required by the LGPL.
 * If you do not delete the provisions above, a recipient may use your version
 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the MPL as stated above or under the terms of the GNU
 * Library General Public License as published by the Free Software Foundation;
 * either version 2 of the License, or any later version.
 *
 * This library 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 Library general Public License for more
 * details.
 *
 * If you didn't download this code from the following link, you should check if
 * you aren't using an obsolete version:
 * http://www.lowagie.com/iText/
 */
package com.lowagie.text.pdf;

import com.lowagie.text.pdf.crypto.AESCipher;
import com.lowagie.text.pdf.crypto.ARCFOUREncryption;

public class StandardDecryption {
    protected ARCFOUREncryption arcfour;
    protected AESCipher cipher;
    private byte[] key;
    private static final int AES_128 = 4;
    private boolean aes;
    private boolean initiated;
    private byte[] iv = new byte[16];
    private int ivptr;

    /** Creates a new instance of StandardDecryption */
    public StandardDecryption(byte[] key, int off, int len, int revision) {
        aes = revision == AES_128;
        if (aes) {
            this.key = new byte[len];
            System.arraycopy(key, off, this.key, 0, len);
        }
        else {
            arcfour = new ARCFOUREncryption();
            arcfour.prepareARCFOURKey(key, off, len);
        }
    }
    
    public byte[] update(byte[] b, int off, int len) {
        if (aes) {
            if (initiated)
                return cipher.update(b, off, len);
            else {
                int left = Math.min(iv.length - ivptr, len);
                System.arraycopy(b, off, iv, ivptr, left);
                off += left;
                len -= left;
                ivptr += left;
                if (ivptr == iv.length) {
                    cipher = new AESCipher(false, key, iv);
                    initiated = true;
                    if (len > 0)
                        return cipher.update(b, off, len);
                }
                return null;
            }
        }
        else {
            byte[] b2 = new byte[len];
            arcfour.encryptARCFOUR(b, off, len, b2, 0);
            return b2;
        }
    }
    
    public byte[] finish() {
        if (aes) {
            return cipher.doFinal();
        }
        else
            return null;
    }
}























Active mutators

INCREMENTS_MUTATOR
VOID_METHOD_CALL_MUTATOR
RETURN_VALS_MUTATOR
MATH_MUTATOR
NEGATE_CONDITIONALS_MUTATOR
INVERT_NEGS_MUTATOR
CONDITIONALS_BOUNDARY_MUTATOR

Tests examined

Report generated by PIT 1.4.2

1		/*
2		* $Id: StandardDecryption.java 3117 2008-01-31 05:53:22Z xlv $
3		*
4		* Copyright 2006 Paulo Soares
5		*
6		* The contents of this file are subject to the Mozilla Public License Version 1.1
7		* (the "License"); you may not use this file except in compliance with the License.
8		* You may obtain a copy of the License at http://www.mozilla.org/MPL/
9		*
10		* Software distributed under the License is distributed on an "AS IS" basis,
11		* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
12		* for the specific language governing rights and limitations under the License.
13		*
14		* The Original Code is 'iText, a free JAVA-PDF library'.
15		*
16		* The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
17		* the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
18		* All Rights Reserved.
19		* Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
20		* are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
21		*
22		* Contributor(s): all the names of the contributors are added in the source code
23		* where applicable.
24		*
25		* Alternatively, the contents of this file may be used under the terms of the
26		* LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
27		* provisions of LGPL are applicable instead of those above. If you wish to
28		* allow use of your version of this file only under the terms of the LGPL
29		* License and not to allow others to use your version of this file under
30		* the MPL, indicate your decision by deleting the provisions above and
31		* replace them with the notice and other provisions required by the LGPL.
32		* If you do not delete the provisions above, a recipient may use your version
33		* of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
34		*
35		* This library is free software; you can redistribute it and/or modify it
36		* under the terms of the MPL as stated above or under the terms of the GNU
37		* Library General Public License as published by the Free Software Foundation;
38		* either version 2 of the License, or any later version.
39		*
40		* This library is distributed in the hope that it will be useful, but WITHOUT
41		* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
42		* FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
43		* details.
44		*
45		* If you didn't download this code from the following link, you should check if
46		* you aren't using an obsolete version:
47		* http://www.lowagie.com/iText/
48		*/
49		package com.lowagie.text.pdf;
50
51		import com.lowagie.text.pdf.crypto.AESCipher;
52		import com.lowagie.text.pdf.crypto.ARCFOUREncryption;
53
54		public class StandardDecryption {
55		protected ARCFOUREncryption arcfour;
56		protected AESCipher cipher;
57		private byte[] key;
58		private static final int AES_128 = 4;
59		private boolean aes;
60		private boolean initiated;
61		private byte[] iv = new byte[16];
62		private int ivptr;
63
64		/** Creates a new instance of StandardDecryption */
65		public StandardDecryption(byte[] key, int off, int len, int revision) {
66	1 1. : negated conditional → NO_COVERAGE	aes = revision == AES_128;
67	1 1. : negated conditional → NO_COVERAGE	if (aes) {
68		this.key = new byte[len];
69	1 1. : removed call to java/lang/System::arraycopy → NO_COVERAGE	System.arraycopy(key, off, this.key, 0, len);
70		}
71		else {
72		arcfour = new ARCFOUREncryption();
73	1 1. : removed call to com/lowagie/text/pdf/crypto/ARCFOUREncryption::prepareARCFOURKey → NO_COVERAGE	arcfour.prepareARCFOURKey(key, off, len);
74		}
75		}
76
77		public byte[] update(byte[] b, int off, int len) {
78	1 1. update : negated conditional → NO_COVERAGE	if (aes) {
79	1 1. update : negated conditional → NO_COVERAGE	if (initiated)
80	1 1. update : mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::update to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE	return cipher.update(b, off, len);
81		else {
82	1 1. update : Replaced integer subtraction with addition → NO_COVERAGE	int left = Math.min(iv.length - ivptr, len);
83	1 1. update : removed call to java/lang/System::arraycopy → NO_COVERAGE	System.arraycopy(b, off, iv, ivptr, left);
84	1 1. update : Replaced integer addition with subtraction → NO_COVERAGE	off += left;
85	1 1. update : Replaced integer subtraction with addition → NO_COVERAGE	len -= left;
86	1 1. update : Replaced integer addition with subtraction → NO_COVERAGE	ivptr += left;
87	1 1. update : negated conditional → NO_COVERAGE	if (ivptr == iv.length) {
88		cipher = new AESCipher(false, key, iv);
89		initiated = true;
90	2 1. update : changed conditional boundary → NO_COVERAGE 2. update : negated conditional → NO_COVERAGE	if (len > 0)
91	1 1. update : mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::update to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE	return cipher.update(b, off, len);
92		}
93	1 1. update : mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::update to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE	return null;
94		}
95		}
96		else {
97		byte[] b2 = new byte[len];
98	1 1. update : removed call to com/lowagie/text/pdf/crypto/ARCFOUREncryption::encryptARCFOUR → NO_COVERAGE	arcfour.encryptARCFOUR(b, off, len, b2, 0);
99	1 1. update : mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::update to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE	return b2;
100		}
101		}
102
103		public byte[] finish() {
104	1 1. finish : negated conditional → NO_COVERAGE	if (aes) {
105	1 1. finish : mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::finish to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE	return cipher.doFinal();
106		}
107		else
108	1 1. finish : mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::finish to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE	return null;
109		}
110		}
		Mutations
66		1.1 Location : Killed by : none negated conditional → NO_COVERAGE
67		1.1 Location : Killed by : none negated conditional → NO_COVERAGE
69		1.1 Location : Killed by : none removed call to java/lang/System::arraycopy → NO_COVERAGE
73		1.1 Location : Killed by : none removed call to com/lowagie/text/pdf/crypto/ARCFOUREncryption::prepareARCFOURKey → NO_COVERAGE
78		1.1 Location : update Killed by : none negated conditional → NO_COVERAGE
79		1.1 Location : update Killed by : none negated conditional → NO_COVERAGE
80		1.1 Location : update Killed by : none mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::update to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE
82		1.1 Location : update Killed by : none Replaced integer subtraction with addition → NO_COVERAGE
83		1.1 Location : update Killed by : none removed call to java/lang/System::arraycopy → NO_COVERAGE
84		1.1 Location : update Killed by : none Replaced integer addition with subtraction → NO_COVERAGE
85		1.1 Location : update Killed by : none Replaced integer subtraction with addition → NO_COVERAGE
86		1.1 Location : update Killed by : none Replaced integer addition with subtraction → NO_COVERAGE
87		1.1 Location : update Killed by : none negated conditional → NO_COVERAGE
90		1.1 Location : update Killed by : none changed conditional boundary → NO_COVERAGE 2.2 Location : update Killed by : none negated conditional → NO_COVERAGE
91		1.1 Location : update Killed by : none mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::update to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE
93		1.1 Location : update Killed by : none mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::update to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE
98		1.1 Location : update Killed by : none removed call to com/lowagie/text/pdf/crypto/ARCFOUREncryption::encryptARCFOUR → NO_COVERAGE
99		1.1 Location : update Killed by : none mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::update to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE
104		1.1 Location : finish Killed by : none negated conditional → NO_COVERAGE
105		1.1 Location : finish Killed by : none mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::finish to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE
108		1.1 Location : finish Killed by : none mutated return of Object value for com/lowagie/text/pdf/StandardDecryption::finish to ( if (x != null) null else throw new RuntimeException ) → NO_COVERAGE

StandardDecryption.java

Mutations

Active mutators

Tests examined