Added convenience constructor to Debug group

Author: JanBobolz

src/main/java/org/cryptimeleon/math/structures/groups/debug/DebugBilinearGroup.java

@@ -1,5 +1,6 @@
 package org.cryptimeleon.math.structures.groups.debug;
 
+import org.cryptimeleon.math.random.RandomGenerator;
 import org.cryptimeleon.math.serialization.Representation;
 import org.cryptimeleon.math.serialization.annotations.ReprUtil;
 import org.cryptimeleon.math.serialization.annotations.Represented;
@@ -88,6 +89,14 @@ public DebugBilinearGroup(BigInteger groupSize, BilinearGroup.Type pairingType)
         init();
     }
 
+    /**
+     * Initializes this prime order bilinear group with a random 256 bit size and the given pairing type.
+     * @param pairingType the type of pairing that should be offered by this bilinear group
+     */
+    public DebugBilinearGroup(BilinearGroup.Type pairingType) {
+        this(RandomGenerator.getRandomPrime(256), pairingType);
+    }
+
     public DebugBilinearGroup(Representation repr) {
         ReprUtil.deserialize(this, repr);
         init();

src/test/java/org/cryptimeleon/math/pairings/PairingTests.java

@@ -88,11 +88,11 @@ public void testBasicProperties() {
     public static Collection<BilinearMap[]> data() {
         // Counting curves
         BilinearGroup countingGroup1 =
-                new DebugBilinearGroup(RandomGenerator.getRandomPrime(128), BilinearGroup.Type.TYPE_1);
+                new DebugBilinearGroup(BilinearGroup.Type.TYPE_1);
         BilinearGroup countingGroup2 =
-                new DebugBilinearGroup(RandomGenerator.getRandomPrime(128), BilinearGroup.Type.TYPE_2);
+                new DebugBilinearGroup(BilinearGroup.Type.TYPE_2);
         BilinearGroup countingGroup3 =
-                new DebugBilinearGroup(RandomGenerator.getRandomPrime(128), BilinearGroup.Type.TYPE_3);
+                new DebugBilinearGroup(BilinearGroup.Type.TYPE_3);
 
         // Supersingular curve groups
         BilinearGroup supsingGroup = new SupersingularBasicBilinearGroup(80);

src/test/java/org/cryptimeleon/math/serialization/standalone/params/StructureStandaloneReprTest.java

@@ -85,8 +85,7 @@ public void testLazyAndBasicGroup() {
     }
 
     public void testDebugGroup() {
-        testBilinearGroup(new DebugBilinearGroup(RandomGenerator.getRandomPrime(128),
-                BilinearGroup.Type.TYPE_1));
+        testBilinearGroup(new DebugBilinearGroup(BilinearGroup.Type.TYPE_1));
         testBilinearGroupImpl(new DebugBilinearGroupImpl(RandomGenerator.getRandomPrime(128),
                 BilinearGroup.Type.TYPE_1, false));
         testBilinearGroupImpl(new DebugBilinearGroupImpl(RandomGenerator.getRandomPrime(128),