1, first to DES encryption expressly admin
2, DES encryption mode for the
3, DES encryption padding for Pkcs7
4, DES encryption key for the first 8 bits of unixtick
For example:
UserCode=testItf
Unixtick=1591271922

The following password encryption process
1, Key="1591271922". The substring (0, 8)="15912719";
2, the Result=encryptByDES (" testItf ", "15912719")="0 rh94ctlvhc="



Please add password method written in c #,