- Secure 128-bit SSL communication

All communications between PCS Backup
Server and your computer are transported in a 128-bit SSL (Secure Socket
Layer) channel. Although all your backup files travel through a public
network (internet), eavesdroppers have no knowledge of what has been
exchanged.
- Backup are securely encrypted

All of your files are first zipped and
encrypted with a your defined encrypting key before they are sent to
Ahsay backup server. To all people but you, your files stored on Ahsay
backup server are no more than some garbage files with random content.
- We don't keep your encrypting key
The encryption key used to encrypt your
files resides only on your computer and is known only to you. It is
never transmitted anywhere across the network. If this key is lost, all
backup files can never be recovered. Therefore, although we have access
to all files you stored on our backup server, we have no knowledge of
the content of the files you stored.
Reminder : Please make sure you
write down you encryption key in a safe place where it will never be
forgotten. Otherwise, you will never be able to recover your backup
files.
- Best encryption algorithm is used
Currently, the algorithm that we are using
to encrypt your files is 128-bit Twofish. It is a block cipher designed
by Counterpane Labs. It was also one of the five Advanced Encryption
Standard (AES) finalists chosen by National Institute of Standard and
Technology (NIST). It subjects to frequent public reviews but no known
attack against this algorithm has been reported.
- Require 8.77 x 1017 years to crack 128-bit encryption
A 128-bit key size has 2128 or
around 3.4 x 1038 possible combination. Even if you have the
world best super computer, ASCI White, SP Power3 375 MHz manufactured by
IBM as of November 2000, it would take 8.77 x 1017years to
test all combinations.Assuming your have the super computer, ASCI White,
SP Power3 375 MHz has 8192 processors which totals a capability of 12.3
teraflops (trillions of operations/second), available to you. Also it
just needs one computer operation to test a possible combination (which
is already faster than what it can do). To use brute force attack
(checking all combinations) on this encryption algorithm. It would take:
3.4 x 1038
-------------- seconds ~ 2.76 x 1025sec
12.3 x 1012
i.e. 876530835323573935 years or 8.77 x 1017
years
to successfully try all combinations. Let
alone ASCI White cannot process as fast as what described here. You can
be sure that your data stored on our server is 100% secured.
- Restrict access to data by IP addresses
You can also restrict access to your backup
files from the set of IP addresses you defined. If someone tries to
access your data from an IP address not on your defined list, their
access will be denied. This additional security ensures backup files is
not open to all location, even username and password are known.