本DES算法，使用了效率很高的C完成。目前，国内知名企业的POS终端中，单DES算法，均是采用这个函数完成。函数经本站验证过，可以放心使用。-The DES algorithm, the use of highly efficient C-complete. At present, the domestic well-known enterprises in the POS terminal, single-DES algorithms are supported by the completion of this function. Function verified by the site, you can rest assured that use.