1 /*

     2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  */

    23 

    24 import java.io.BufferedReader;

    25 import java.io.File;

    26 import java.io.FileInputStream;

    27 import java.io.IOException;

    28 import java.io.InputStreamReader;

    29 import java.security.*;

    30 import java.security.spec.*;

    31 import java.security.interfaces.*;

    32 import java.util.ArrayList;

    33 import java.util.List;

    34 

    35 /*

    36  * @test

    37  * @bug 8146293

    38  * @summary Known Answer Tests based on NIST 186-3 at:

    39  * @compile SigRecord.java

    40  * @run main/othervm TestSigGenPSS

    41  */

    42 public class TestSigGenPSS {

    43 

    44     private static final String[] testFiles = {

    45         "SigGenPSS_186-3.txt", "SigGenPSS_186-3_TruncatedSHAs.txt"

    46     };

    47 

    48     static final class MyKnownRandomSrc extends SecureRandom {

    49         final byte[] srcBytes;

    50         int numBytes;

    51 

    52         MyKnownRandomSrc(String srcString) {

    53             this.srcBytes = SigRecord.toByteArray(srcString);

    54             this.numBytes = this.srcBytes.length;

    55         }

    56         @Override

    57         public void nextBytes(byte[] bytes) {

    58             if (bytes.length > numBytes) {

    59                 throw new RuntimeException("Not enough bytes, need "

    60                     + bytes.length + ", got " + numBytes);

    61             }

    62             System.arraycopy(this.srcBytes, this.srcBytes.length - numBytes, bytes, 0, bytes.length);

    63             numBytes -= bytes.length;

    64         }

    65 

    66     }

    67 

    68     public static void main(String[] args) throws Exception {

    69         //for (Provider provider : Security.getProviders()) {

    70         Provider p = Security.getProvider("SunRsaSign");

    71         Signature sig;

    72         try {

    73             sig = Signature.getInstance("RSASSA-PSS", p);

    74         } catch (NoSuchAlgorithmException e) {

    75             System.out.println("Skip testing RSASSA-PSS" +

    76                 " due to no support");

    77             return;

    78         }

    79 

    80         boolean success = true;

    81         for (String f : testFiles) {

    82             System.out.println("[INPUT FILE " + f + "]");

    83             try {

    84                 success &= runTest(SigRecord.read(f), sig);

    85             } catch (IOException e) {

    86                 System.out.println("Unexpected exception: " + e);

    87                 e.printStackTrace(System.out);

    88                 success = false;

    89             }

    90         }

    91 

    92         if (!success) {

    93             throw new RuntimeException("One or more test failed");

    94         }

    95         System.out.println("Test passed");

    96     }

    97 

    98     /*

    99      * Run all the tests in the data list with specified algorithm

   100      */

   101     static boolean runTest(List<SigRecord> records, Signature sig) throws Exception {

   102         boolean success = true;

   103         KeyFactory kf = KeyFactory.getInstance("RSA", sig.getProvider());

   104         for (SigRecord sr : records) {

   105             System.out.println("==Testing Record : " + sr + "==");

   106             PrivateKey privKey = kf.generatePrivate(sr.privKeySpec);

   107             PublicKey pubKey = kf.generatePublic(sr.pubKeySpec);

   108             success &= check(sig, privKey, pubKey, sr.testVectors);

   109             System.out.println("==Done==");

   110         }

   111         return success;

   112     }

   113 

   114     /*

   115      * Generate the signature, check against known values and verify.

   116      */

   117     static boolean check(Signature sig, PrivateKey privKey, PublicKey pubKey,

   118         List<SigRecord.SigVector> vectors) throws Exception {

   119 

   120         boolean success = true;

   121         for (SigRecord.SigVector v : vectors) {

   122             System.out.println("\tAgainst " + v.mdAlg);

   123             byte[] msgBytes = SigRecord.toByteArray(v.msg);

   124             byte[] expSigBytes = SigRecord.toByteArray(v.sig);

   125 

   126             MyKnownRandomSrc saltSrc = new MyKnownRandomSrc(v.salt);

   127             sig.initSign(privKey, saltSrc);

   128             PSSParameterSpec params = new PSSParameterSpec(v.mdAlg, "MGF1",

   129                 new MGF1ParameterSpec(v.mdAlg), saltSrc.numBytes, 1);

   130             sig.setParameter(params);

   131             sig.update(msgBytes);

   132             byte[] actualSigBytes = sig.sign();

   133 

   134             // Check if the supplied salt bytes are used up

   135             if (saltSrc.numBytes != 0) {

   136                 throw new RuntimeException("Error: salt length mismatch! "

   137                     + saltSrc.numBytes + " bytes leftover");

   138             }

   139 

   140             success &= MessageDigest.isEqual(actualSigBytes, expSigBytes);

   141 

   142             if (!success) {

   143                 System.out.println("\tFailed:");

   144                 System.out.println("\tSHAALG       = " + v.mdAlg);

   145                 System.out.println("\tMsg          = " + v.msg);

   146                 System.out.println("\tSalt          = " + v.salt);

   147                 System.out.println("\tExpected Sig = " + v.sig);

   148                 System.out.println("\tActual Sig   = " + SigRecord.toHexString(actualSigBytes));

   149             } else {

   150                 System.out.println("\t" + v.mdAlg + " Test Vector Passed");

   151             }

   152         }

   153         return success;

   154     }

   155 }