True green software,no need to install. Can encrypt file of any type and any size. Can encrypt more than one file and folder at a time;can decrypt more than one file at a time;can delete completely more than one file and folder at a time. Adopt the international standard cryptographic algorithm (RSA and MD5). Support the 128-digit code. Support three encryption modes including ordinary,parasitic and self-decrypting. Support adding file and folder from "Windows Explorer" or "My Computer" to the software by drag and drop.