Merge pull request #146 from cryptimeleon/secp256k1hash

Added HashInto classes for secp256k1

Author: Jan Bobolz

build.gradle

@@ -8,7 +8,7 @@ plugins {
 group = 'org.cryptimeleon'
 archivesBaseName = project.name
 boolean isRelease = project.hasProperty("release")
-version = '3.0.1'  + (isRelease ? "" : "-SNAPSHOT")
+version = '3.0.2'  + (isRelease ? "" : "-SNAPSHOT")
 
 sourceCompatibility = 1.8
 targetCompatibility = 1.8

src/main/java/org/cryptimeleon/math/random/RandomGenerator.java

@@ -63,7 +63,7 @@ public static BigInteger getRandomNonZeroNumber(BigInteger exclusiveUpperBound)
     }
 
     /**
-     * Generates a random integer k with \(0 \leq k < 2^{\text{bitlength}}-1\).
+     * Generates a random integer k with \(0 \leq k &lt; 2^{\text{bitlength}}-1\).
      */
     public static BigInteger getRandomNumberOfBitlength(int bitlength) {
         return impl.getRandomNumberOfBitlength(bitlength);

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

@@ -350,7 +350,7 @@ public int getExponentiationWindowSize() {
      * of the exponentiation algorithm, we do not recommend setting this too high as the cost of computing the
      * whole window quickly exceeds its performance benefits during the actual exponentiation.
      * <p>
-     * If you want to change the number of cached precomputations, use {@link this#setPrecomputationWindowSize(int)}.
+     * If you want to change the number of cached precomputations, use {@link #setPrecomputationWindowSize(int)}.
      */
     public void setExponentiationWindowSize(int exponentiationWindowSize) {
         g1.setExponentiationWindowSize(exponentiationWindowSize);

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

@@ -616,7 +616,7 @@ public int getExponentiationWindowSize() {
      * of the exponentiation algorithm, we do not recommend setting this too high as the cost of computing the
      * whole window quickly exceeds its performance benefits during the actual exponentiation.
      * <p>
-     * If you want to change the number of cached precomputations, use {@link this#setPrecomputationWindowSize(int)}.
+     * If you want to change the number of cached precomputations, use {@link #setPrecomputationWindowSize(int)}.
      */
     public void setExponentiationWindowSize(int exponentiationWindowSize) {
         groupTotal.setExponentiationWindowSize(exponentiationWindowSize);

src/main/java/org/cryptimeleon/math/structures/groups/elliptic/nopairing/HashIntoSecp256k1.java

@@ -0,0 +1,14 @@
+package org.cryptimeleon.math.structures.groups.elliptic.nopairing;
+
+import org.cryptimeleon.math.serialization.Representation;
+import org.cryptimeleon.math.structures.groups.lazy.HashIntoLazyGroup;
+
+public class HashIntoSecp256k1 extends HashIntoLazyGroup {
+    public HashIntoSecp256k1() {
+        super(new Secp256k1Impl.HashIntoSecp256k1(), new Secp256k1());
+    }
+
+    public HashIntoSecp256k1(Representation repr) {
+        super(repr);
+    }
+}

src/main/java/org/cryptimeleon/math/structures/groups/elliptic/nopairing/HashIntoSecp256k1Basic.java

@@ -0,0 +1,15 @@
+package org.cryptimeleon.math.structures.groups.elliptic.nopairing;
+
+import org.cryptimeleon.math.serialization.Representation;
+import org.cryptimeleon.math.structures.groups.basic.HashIntoBasicGroup;
+import org.cryptimeleon.math.structures.groups.lazy.HashIntoLazyGroup;
+
+public class HashIntoSecp256k1Basic extends HashIntoBasicGroup {
+    public HashIntoSecp256k1Basic() {
+        super(new Secp256k1Impl.HashIntoSecp256k1(), new Secp256k1Basic());
+    }
+
+    public HashIntoSecp256k1Basic(Representation repr) {
+        super(repr);
+    }
+}

src/main/java/org/cryptimeleon/math/structures/groups/lazy/LazyGroup.java

@@ -225,7 +225,7 @@ public int getExponentiationWindowSize() {
      * of the exponentiation algorithm, we do not recommend setting this too high as the cost of computing the
      * whole window quickly exceeds its performance benefits during the actual exponentiation.
      * <p>
-     * If you want to change the number of cached precomputations, use {@link this#setPrecomputationWindowSize(int)}.
+     * If you want to change the number of cached precomputations, use {@link #setPrecomputationWindowSize(int)}.
      */
     public void setExponentiationWindowSize(int exponentiationWindowSize) {
         this.exponentiationWindowSize = exponentiationWindowSize;