private void clearEncrypt03() {
        if (StringUtils.isEmpty(analysisContext.readWorkbookHolder().getPassword())
            || !ExcelTypeEnum.XLS.equals(analysisContext.readWorkbookHolder().getExcelType())) {
            return;
        }
        Biff8EncryptionKey.setCurrentUserPassword(null);
    }
Clears the encryption key for XLS files to ensure secure handling of sensitive data.
fastexcel-core/src/main/java/cn/idev/excel/analysis/ExcelAnalyserImpl.java