How Encryption for Strong
Group Web Presentation Week13
s1160007 Yuki Abe
s1160001 Takatoshi Akiyama
s1160005 Shohei Abe
s1160006 Taishi Abe
Data encryption is the conversion of
data into a form,
called a cipher,
that cannot be understood by
To protect files and folders from attackers,
users use the Encrypting File System(EFS).
The EFS is available in Microsoft's Windows
2000 and later OS.
EFS works by encrypting a file with a
symmetric key and a user's public key.
To decrypt the file, user needs user's private
key and the symmetric key.
The link encryption is a phased
protection of the data that trade-
off between two points in the
network provided by encrypting
data separately in each network
The service that can use a public line
as if it is a dedicated line.
It is used for connection between the
footholds of the network in the
company, and it is cost-cut than I
introduce a dedicated line into the
backbone of the carrier by I “ride
together”, and doing it.
Encryption program,usually in
firmware, use a string of numbers
called a key to create a stream of
data combining the real