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Bech32: use ByteUtils.concat() in verifyChecksum()

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Sean Gilligan 2025-02-25 14:18:20 -08:00 • committed by Andreas Schildbach
parent 96835143db
commit 5edb96cbb8
1 changed files with 2 additions and 3 deletions
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5
base/src/main/java/org/bitcoinj/base/Bech32.java
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@ -18,6 +18,7 @@ package org.bitcoinj.base;
import org.bitcoinj.base.exceptions.AddressFormatException; import org.bitcoinj.base.exceptions.AddressFormatException;
import org.bitcoinj.base.internal.ByteArray; import org.bitcoinj.base.internal.ByteArray;
import org.bitcoinj.base.internal.ByteUtils;
import java.io.ByteArrayOutputStream; import java.io.ByteArrayOutputStream;
import java.util.Arrays; import java.util.Arrays;
@ -197,9 +198,7 @@ public class Bech32 {
*/ */
private static Encoding verifyChecksum(final String hrp, final byte[] values) { private static Encoding verifyChecksum(final String hrp, final byte[] values) {
byte[] hrpExpanded = expandHrp(hrp); byte[] hrpExpanded = expandHrp(hrp);
byte[] combined = new byte[hrpExpanded.length + values.length]; byte[] combined = ByteUtils.concat(hrpExpanded, values);
System.arraycopy(hrpExpanded, 0, combined, 0, hrpExpanded.length);
System.arraycopy(values, 0, combined, hrpExpanded.length, values.length);
final int check = polymod(combined); final int check = polymod(combined);
if (check == BECH32_CONST) if (check == BECH32_CONST)
return Encoding.BECH32; return Encoding.BECH32;