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/*
* Copyright (c) 2018, 2021, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code 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 General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @bug 8171277
* @summary XEC curve operations iterative test vectors
* @library /test/lib
* @build jdk.test.lib.Convert
* @modules jdk.crypto.ec/sun.security.ec
* @run main XECIterative 0 10000
* @run main XECIterative 10000 20000
* @run main XECIterative 20000 30000
* @run main XECIterative 30000 40000
* @run main XECIterative 40000 50000
* @run main XECIterative 50000 60000
* @run main XECIterative 60000 70000
* @run main XECIterative 70000 80000
* @run main XECIterative 80000 90000
* @run main XECIterative 90000 100000
*/
import sun.security.ec.*;
import java.io.*;
import java.security.spec.NamedParameterSpec;
import java.util.*;
/*
* This test is derived from the iterative test in RFC 7748. To produce the
* test vectors, the implementation ran for 1,000,000 iterations and saved
* values of k and u at periodic checkpoints. The RFC includes the correct
* value of k after 1,000,000 iterations, and this value was used to ensure
* that the test vectors are correct. This test has multiple @run tags so that
* no single run takes too long.
*/
public class XECIterative {
private static class KU {
public byte[] k;
public byte[] u;
}
public static void main(String[] args) throws IOException {
long start = Long.parseLong(args[0]);
long end = Long.parseLong(args[1]);
XECIterative m = new XECIterative();
m.runIterativeTest("X25519", start, end);
m.runIterativeTest("X448", start, end);
}
private void runIterativeTest(String opName, long start, long end)
throws IOException {
NamedParameterSpec paramSpec = new NamedParameterSpec(opName);
XECParameters settings =
XECParameters.get(RuntimeException::new, paramSpec);
XECOperations ops = new XECOperations(settings);
File vectorFile = new File(System.getProperty("test.src", "."),
opName + ".iter");
Map<Long, KU> testIters = new HashMap<Long, KU>();
BufferedReader in = new BufferedReader(new FileReader(vectorFile));
String line;
while ((line = in.readLine()) != null) {
StringTokenizer tok = new StringTokenizer(line, ",");
long iter = Long.parseLong(tok.nextToken());
String kOrU = tok.nextToken();
byte[] value = HexFormat.of().parseHex(tok.nextToken());
KU entry = testIters.get(iter);
if (entry == null) {
entry = new KU();
testIters.put(iter, entry);
}
if (kOrU.equals("k")) {
entry.k = value;
} else {
entry.u = value;
}
}
KU startEntry = testIters.get(start);
byte[] k = startEntry.k.clone();
byte[] u = startEntry.u.clone();
for (long i = start; i <= end; i++) {
KU curEntry;
if (i % 1000 == 0 && (curEntry = testIters.get(i)) != null) {
if (!Arrays.equals(k, curEntry.k)) {
throw new RuntimeException("At iter " + i + ": expected k: "
+ HexFormat.of().withUpperCase().formatHex(curEntry.k)
+ ", computed k: " + HexFormat.of().withUpperCase().formatHex(k));
}
if (!Arrays.equals(u, curEntry.u)) {
throw new RuntimeException("At iter " + i + ": expected u: "
+ HexFormat.of().withUpperCase().formatHex(curEntry.u)
+ ", computed u: " + HexFormat.of().withUpperCase().formatHex(u));
}
System.out.println(opName + " checkpoint passed at " + i);
}
byte[] k_copy = Arrays.copyOf(k, k.length);
byte[] u_out = ops.encodedPointMultiply(k, u);
u = k_copy;
k = u_out;
}
}
}
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