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Make RingElementVector UniqueByteRepresentable. #139

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Merged
feidens merged 1 commit into from
Oct 13, 2021
Merged

Make RingElementVector UniqueByteRepresentable. #139

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14 changes: 12 additions & 2 deletions src/main/java/org/cryptimeleon/math/structures/rings/cartesian/RingElementVector.java
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Original file line number Diff line number Diff line change
@@ -1,6 +1,8 @@
package org.cryptimeleon.math.structures.rings.cartesian;

import org.cryptimeleon.math.expressions.exponent.ExponentConstantExpr;
import org.cryptimeleon.math.hash.ByteAccumulator;
import org.cryptimeleon.math.hash.UniqueByteRepresentable;
import org.cryptimeleon.math.serialization.ListRepresentation;
import org.cryptimeleon.math.serialization.Representable;
import org.cryptimeleon.math.serialization.Representation;
Expand All @@ -17,7 +19,7 @@
/**
* A vector of ring elements supporting element-wise ring operations with other ring element vectors.
*/
public class RingElementVector extends Vector<RingElement> implements Representable {
public class RingElementVector extends Vector<RingElement> implements Representable, UniqueByteRepresentable {

public RingElementVector(RingElement... values) {
super(values);
Expand Down Expand Up @@ -68,7 +70,7 @@ public RingElementVector pow(long exponent) {
}

public RingElementVector pow(Vector<?> exponents) {
return zip(exponents, (g,x) ->
return zip(exponents, (g, x) ->
x instanceof Long ? g.pow((Long) x)
: g.pow((BigInteger) x),
RingElementVector::new);
Expand Down Expand Up @@ -148,4 +150,12 @@ public ProductRingElement asElementInProductRing() {
public ExponentExpressionVector asExponentExpr() {
return map(v -> new ExponentConstantExpr(v.asInteger()), ExponentExpressionVector::new);
}

@Override
public ByteAccumulator updateAccumulator(ByteAccumulator accumulator) {
for (RingElement e : this.values) {
accumulator.escapeAndSeparate(e.getUniqueByteRepresentation());
}
return accumulator;
}
}