[Cryptech-Commits] [core/math/modexp] 01/01: Adding a generator for tests to the modexp model and core.
git at cryptech.is
git at cryptech.is
Thu Apr 23 09:25:19 UTC 2015
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joachim at secworks.se pushed a commit to branch master
in repository core/math/modexp.
commit 7a6c9b5eb5a3d27be80c68eab583bd05e45bd310
Author: Joachim Strömbergson <joachim at secworks.se>
Date: Thu Apr 23 11:25:10 2015 +0200
Adding a generator for tests to the modexp model and core.
---
src/testgenerator/.classpath | 6 +++
src/testgenerator/.gitignore | 1 +
src/testgenerator/.project | 17 ++++++
.../.settings/org.eclipse.jdt.core.prefs | 11 ++++
.../modexp/testgenerator/TestGenerator.java | 19 +++++++
.../modexp/testgenerator/TestGeneratorBasic.java | 35 +++++++++++++
.../crypttech/modexp/testgenerator/TestVector.java | 23 ++++++++
.../org/crypttech/modexp/testgenerator/Util.java | 28 ++++++++++
.../modexp/testgenerator/format/GeneratorC.java | 61 ++++++++++++++++++++++
.../testgenerator/format/ModExpTestFormater.java | 26 +++++++++
10 files changed, 227 insertions(+)
diff --git a/src/testgenerator/.classpath b/src/testgenerator/.classpath
new file mode 100644
index 0000000..fb565a5
--- /dev/null
+++ b/src/testgenerator/.classpath
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<classpath>
+ <classpathentry kind="src" path="src"/>
+ <classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-1.7"/>
+ <classpathentry kind="output" path="bin"/>
+</classpath>
diff --git a/src/testgenerator/.gitignore b/src/testgenerator/.gitignore
new file mode 100644
index 0000000..ae3c172
--- /dev/null
+++ b/src/testgenerator/.gitignore
@@ -0,0 +1 @@
+/bin/
diff --git a/src/testgenerator/.project b/src/testgenerator/.project
new file mode 100644
index 0000000..aa04832
--- /dev/null
+++ b/src/testgenerator/.project
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<projectDescription>
+ <name>TestGenerator</name>
+ <comment></comment>
+ <projects>
+ </projects>
+ <buildSpec>
+ <buildCommand>
+ <name>org.eclipse.jdt.core.javabuilder</name>
+ <arguments>
+ </arguments>
+ </buildCommand>
+ </buildSpec>
+ <natures>
+ <nature>org.eclipse.jdt.core.javanature</nature>
+ </natures>
+</projectDescription>
diff --git a/src/testgenerator/.settings/org.eclipse.jdt.core.prefs b/src/testgenerator/.settings/org.eclipse.jdt.core.prefs
new file mode 100644
index 0000000..7341ab1
--- /dev/null
+++ b/src/testgenerator/.settings/org.eclipse.jdt.core.prefs
@@ -0,0 +1,11 @@
+eclipse.preferences.version=1
+org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
+org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7
+org.eclipse.jdt.core.compiler.codegen.unusedLocal=preserve
+org.eclipse.jdt.core.compiler.compliance=1.7
+org.eclipse.jdt.core.compiler.debug.lineNumber=generate
+org.eclipse.jdt.core.compiler.debug.localVariable=generate
+org.eclipse.jdt.core.compiler.debug.sourceFile=generate
+org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
+org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
+org.eclipse.jdt.core.compiler.source=1.7
diff --git a/src/testgenerator/src/org/crypttech/modexp/testgenerator/TestGenerator.java b/src/testgenerator/src/org/crypttech/modexp/testgenerator/TestGenerator.java
new file mode 100644
index 0000000..af5850b
--- /dev/null
+++ b/src/testgenerator/src/org/crypttech/modexp/testgenerator/TestGenerator.java
@@ -0,0 +1,19 @@
+package org.crypttech.modexp.testgenerator;
+
+import java.io.PrintWriter;
+import java.util.ArrayList;
+import java.util.List;
+
+import org.crypttech.modexp.testgenerator.format.GeneratorC;
+
+public class TestGenerator {
+ public static void main(String[] argv) throws Exception {
+ List<TestVector> vectors = new ArrayList<TestVector>();
+ vectors.addAll(TestGeneratorBasic.getTestVectors());
+ PrintWriter pw = new PrintWriter("../model/c/src/autogenerated_tests.c");
+ try (GeneratorC genC = new GeneratorC(pw)) {
+ for (TestVector vector : vectors)
+ genC.format(vector);
+ }
+ }
+}
diff --git a/src/testgenerator/src/org/crypttech/modexp/testgenerator/TestGeneratorBasic.java b/src/testgenerator/src/org/crypttech/modexp/testgenerator/TestGeneratorBasic.java
new file mode 100644
index 0000000..71b56ac
--- /dev/null
+++ b/src/testgenerator/src/org/crypttech/modexp/testgenerator/TestGeneratorBasic.java
@@ -0,0 +1,35 @@
+package org.crypttech.modexp.testgenerator;
+
+import java.math.BigInteger;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
+
+public class TestGeneratorBasic {
+ public static final List<TestVector> getTestVectors() {
+ Random rng = new Random(0); //any static seed
+ ArrayList<TestVector> list = new ArrayList<TestVector>();
+
+ generateTestVectors(rng, list, 33, 2);
+ generateTestVectors(rng, list, 30, 1);
+ //generateTestVectors(rng, list, 32, 1); //will generate failing tests in C model
+ //generateTestVectors(rng, list, 31, 1); //will generate failing tests in C model
+ return list;
+ }
+
+ private static void generateTestVectors(Random rng,
+ ArrayList<TestVector> list, int bitLength, int wordLength) {
+ for(int i = 0; i < 10; i++) {
+ final long seed = rng.nextLong();
+ rng.setSeed(seed);
+ BigInteger m = BigInteger.probablePrime(bitLength, rng);
+ BigInteger x = BigInteger.probablePrime(bitLength, rng);
+ BigInteger e = BigInteger.probablePrime(bitLength, rng);
+ BigInteger z = x.modPow(e, m);
+ TestVector tv = Util.generateTestVector("BASIC", Long.toString(seed), wordLength, m, x, e, z);
+ list.add(tv);
+ }
+ }
+
+
+}
diff --git a/src/testgenerator/src/org/crypttech/modexp/testgenerator/TestVector.java b/src/testgenerator/src/org/crypttech/modexp/testgenerator/TestVector.java
new file mode 100644
index 0000000..a9931c1
--- /dev/null
+++ b/src/testgenerator/src/org/crypttech/modexp/testgenerator/TestVector.java
@@ -0,0 +1,23 @@
+package org.crypttech.modexp.testgenerator;
+
+public class TestVector {
+ public final String generator;
+ public final String seed;
+ public final int length;
+ public final int[] X;
+ public final int[] E;
+ public final int[] M;
+ public final int[] expected;
+
+ public TestVector(String generator, String seed, int length, int[] x,
+ int[] e, int[] m, int[] expected) {
+ super();
+ this.generator = generator;
+ this.seed = seed;
+ this.length = length;
+ X = x;
+ E = e;
+ M = m;
+ this.expected = expected;
+ }
+}
diff --git a/src/testgenerator/src/org/crypttech/modexp/testgenerator/Util.java b/src/testgenerator/src/org/crypttech/modexp/testgenerator/Util.java
new file mode 100644
index 0000000..5fbe052
--- /dev/null
+++ b/src/testgenerator/src/org/crypttech/modexp/testgenerator/Util.java
@@ -0,0 +1,28 @@
+package org.crypttech.modexp.testgenerator;
+
+import java.math.BigInteger;
+
+public class Util {
+ public static TestVector generateTestVector(String generator, String seed, int length,
+ BigInteger m, BigInteger x, BigInteger e, BigInteger z) {
+ //System.out.printf("%s %s %s %s\n", m.toString(16), x.toString(16), e.toString(16), z.toString(16));
+ int[] mi = toInt(length, m);
+ int[] xi = toInt(length, x);
+ int[] ei = toInt(length, e);
+ int[] zi = toInt(length, z);
+ return new TestVector(generator, seed, length, xi, ei, mi, zi);
+ }
+
+
+ public static int[] toInt(int length, BigInteger bi) {
+ byte[] ba = bi.toByteArray();
+ int[] ia = new int[length];
+ for (int j = ba.length-1; j >= 0; j--) {
+ int changeByte = ((ba.length-1-j)%4);
+ int jj = length -1 - (ba.length-1-j)/4;
+ ia[jj] |= (ba[j] & 0xff) << (changeByte*8);
+ }
+ return ia;
+ }
+
+}
diff --git a/src/testgenerator/src/org/crypttech/modexp/testgenerator/format/GeneratorC.java b/src/testgenerator/src/org/crypttech/modexp/testgenerator/format/GeneratorC.java
new file mode 100644
index 0000000..fbfd852
--- /dev/null
+++ b/src/testgenerator/src/org/crypttech/modexp/testgenerator/format/GeneratorC.java
@@ -0,0 +1,61 @@
+package org.crypttech.modexp.testgenerator.format;
+
+import java.io.PrintWriter;
+
+import org.crypttech.modexp.testgenerator.TestVector;
+
+public class GeneratorC extends ModExpTestFormater {
+ private static final char LF = (char) 10;
+
+ public GeneratorC(PrintWriter pw) {
+ super(pw);
+ out("#include <stdio.h>" + LF);
+ out("#include <stdlib.h>" + LF);
+ out("#include \"montgomery_array.h\"" + LF);
+ out("#include \"bignum_uint32_t.h\"" + LF);
+ }
+
+ StringBuilder footer = new StringBuilder();
+
+ @Override
+ public void format(TestVector testVector) {
+ String testname = ("autogenerated_" + testVector.generator + "_" + testVector.seed)
+ .replace("-", "M");
+ footer.append(" ").append(testname).append("();").append(LF);
+
+ StringBuilder sb = new StringBuilder();
+ sb.append("void ").append(testname).append("(void) {").append(LF);
+ sb.append(" printf(\"=== ").append(testname).append(" ===\\n\");")
+ .append(LF);
+ appendCArray(sb, "X", testVector.X);
+ appendCArray(sb, "E", testVector.E);
+ appendCArray(sb, "M", testVector.M);
+ appendCArray(sb, "expected", testVector.expected);
+ int[] Z = new int[testVector.length];
+ appendCArray(sb, "Z", Z);
+ sb.append(" mod_exp_array(").append(testVector.length)
+ .append(", X, E, M, Z);").append(LF);
+ sb.append(" assertArrayEquals(").append(testVector.length)
+ .append(", expected, Z);").append(LF);
+ sb.append("}").append(LF);
+ out(sb.toString());
+ }
+
+ private void appendCArray(StringBuilder sb, String arrayName, int[] array) {
+ sb.append(" uint32_t ").append(arrayName).append("[] = ");
+ sb.append("{ ");
+ for (int m : array)
+ sb.append(String.format("0x%08x, ", m));
+ sb.replace(sb.length() - 2, sb.length(), " };");
+ sb.append(LF);
+ }
+
+ @Override
+ public void close() throws Exception {
+ out("void autogenerated_tests(void) {" + LF);
+ out(footer.toString());
+ out("}" + LF);
+ super.close();
+ }
+
+}
diff --git a/src/testgenerator/src/org/crypttech/modexp/testgenerator/format/ModExpTestFormater.java b/src/testgenerator/src/org/crypttech/modexp/testgenerator/format/ModExpTestFormater.java
new file mode 100644
index 0000000..c15ca88
--- /dev/null
+++ b/src/testgenerator/src/org/crypttech/modexp/testgenerator/format/ModExpTestFormater.java
@@ -0,0 +1,26 @@
+package org.crypttech.modexp.testgenerator.format;
+
+import java.io.PrintWriter;
+
+import org.crypttech.modexp.testgenerator.TestVector;
+
+public abstract class ModExpTestFormater implements AutoCloseable {
+ private PrintWriter pw;
+
+ public ModExpTestFormater(PrintWriter pw) {
+ this.pw = pw;
+ }
+
+ public abstract void format(TestVector testVector);
+
+ protected final void out(String s) {
+ pw.print(s);
+ }
+
+ @Override
+ public void close() throws Exception {
+ pw.close();
+ }
+
+
+}
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