assertFalse(result);
        verify(signingDigest, times(1)).verify(testData, offset, length, extraPad, null);
    }

    @Test
    @DisplayName("Test sign method with empty data array")
    void testSignWithEmptyData() {
        // Arrange
        byte[] emptyData = new byte[0];
        int offset = 0;
        int length = 0;

        // Act
        signingDigest.sign(emptyData, offset, length, request, response);