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//
// Copyright 2020-2021 Signal Messenger, LLC.
// SPDX-License-Identifier: AGPL-3.0-only
//
package org.signal.zkgroup.internal;
import org.signal.zkgroup.InvalidInputException;
import java.util.Arrays;
import java.util.Locale;
public abstract class ByteArray {
protected final byte[] contents;
protected ByteArray(byte[] contents) {
this.contents = contents.clone();
}
protected ByteArray(byte[] contents, int expectedLength) throws InvalidInputException {
this.contents = cloneArrayOfLength(contents, expectedLength);
}
private static byte[] cloneArrayOfLength(byte[] bytes, int expectedLength) throws InvalidInputException {
if (bytes.length != expectedLength) {
throw new InvalidInputException(String.format(Locale.US, "Length of array supplied was %d expected %d", bytes.length, expectedLength));
}
return bytes.clone();
}
public byte[] getInternalContentsForJNI() {
return contents;
}
public byte[] serialize() {
return contents.clone();
}
@Override
public int hashCode() {
return getClass().hashCode() * 31 + Arrays.hashCode(contents);
}
@Override
public boolean equals(Object o) {
if (o == null || getClass() != o.getClass()) return false;
ByteArray other = (ByteArray) o;
if (contents == other.getInternalContentsForJNI()) return true;
if (contents.length != other.getInternalContentsForJNI().length) return false;
int result = 0;
for (int i = 0; i < contents.length; i++) {
result |= contents[i] ^ other.getInternalContentsForJNI()[i];
}
return result == 0;
}
}
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