}
        if (length < MIN_COMPRESSION_SIZE) {
            log.debug("Data too small for compression ({} bytes), returning uncompressed", length);
            byte[] result = new byte[length];
            System.arraycopy(data, offset, result, 0, length);
            return result;
        }
        if (length > MAX_COMPRESSION_SIZE) {
            throw new CIFSException("Data too large for compression: " + length + " bytes");
        }

    }
  }

  private static Double[] concat(Double[] left, Double[] right) {
    Double[] result = new Double[left.length + right.length];
    System.arraycopy(left, 0, result, 0, left.length);
    System.arraycopy(right, 0, result, left.length, right.length);
    return result;
  }

  public abstract static class TestDoubleListGenerator implements TestListGenerator<Double> {
    @Override

        // all fixed inputs go into the suffix:
        // + label
        System.arraycopy(label, 0, suffix, 0, label.length);
        // + 1 byte 0x00
        // + context
        System.arraycopy(context, 0, suffix, label.length + 1, context.length);
        // + 4 byte (== r bits) big endian encoding of L
        suffix[suffix.length - 1] = (byte) 128;

                SMBUtil.writeInt2(hashAlgo, dst, dstIndex);
                dstIndex += 2;
            }
        }

        if (this.salt != null) {
            System.arraycopy(this.salt, 0, dst, dstIndex, this.salt.length);
            dstIndex += this.salt.length;
        }

        return dstIndex - start;
    }

    /**
     * {@inheritDoc}
     *

            }
            SMBUtil.writeInt4(this.signSequence, data, index);
            update(data, offset, length);
            System.arraycopy(digest(), 0, data, index, 8);
            if (this.bypass) {
                this.bypass = false;
                System.arraycopy("BSRSPYL ".getBytes(), 0, data, index, 8);
            }
        } catch (final Exception ex) {
            log.error("Signature failed", ex);

            // Combine IV and ciphertext
            byte[] result = new byte[GCM_IV_SIZE + ciphertext.length];
            System.arraycopy(iv, 0, result, 0, GCM_IV_SIZE);
            System.arraycopy(ciphertext, 0, result, GCM_IV_SIZE, ciphertext.length);

            return result;

        } finally {
            // Securely wipe plaintext bytes - guaranteed by try-finally

        if (this.blob != null) {
            System.arraycopy(this.blob, 0, dst, dstIndex, this.blob.length);
            dstIndex += this.blob.length;
        } else {
            System.arraycopy(this.lmHash, 0, dst, dstIndex, this.lmHash.length);
            dstIndex += this.lmHash.length;
            System.arraycopy(this.ntHash, 0, dst, dstIndex, this.ntHash.length);
            dstIndex += this.ntHash.length;

        srcIndex++;
        // gotta read the mac first so we can populate addressArray with it
        System.arraycopy(src, srcIndex + namesLength, this.macAddress, 0, 6);
        srcIndex += readNodeNameArray(src, srcIndex);
        this.stats = new byte[statsLength];
        System.arraycopy(src, srcIndex, this.stats, 0, statsLength);
        srcIndex += statsLength;
        return srcIndex - start;
    }

        byte[] nameBytes = new byte[4];
        System.arraycopy(buffer, 16, nameBytes, 0, 4);
        assertArrayEquals("RqLs".getBytes(), nameBytes);

        // Verify lease key is encoded at offset 24 (after header + name + padding)
        byte[] encodedKey = new byte[16];
        System.arraycopy(buffer, 24, encodedKey, 0, 16);
        assertArrayEquals(testKey.getKey(), encodedKey);

        byte[] buffer = new byte[testString.length()];

        // When - Manual string encoding using individual bytes
        byte[] strBytes = testString.getBytes();
        System.arraycopy(strBytes, 0, buffer, 0, strBytes.length);

        // Then
        String decoded = new String(buffer);
        assertEquals(testString, decoded);
    }

    @Test