Reference: Advanced FTP Server Options
LockSafe encryption applies Beyond FTP private key encryption to the data files being transferred to and from an FTP server. This allows even a public ftp server to be used to store secure, private data files. The specific encryption algorithm is specified by the drop-down selection box. The standard international version provides two selections:
None
Files are sent and received without
modification.
DES
56-bit DES encryption is enabled for FTP file transfers.
The restricted version, currently available in only limited areas of the world, adds the following encryption methods:
TwoFish Block
encryption - supports 128, 192, and 256 bit
keys.
AES
The NIST Advanced Encryption Standard that
replaces
Triple DES. Also known as Rijndael.
The file is encrypted as it is written to the FTP server, and remains in the encrypted state on the FTP server. It is decrypted as it is retrieved from the server.