1. How Encryption For Strong Security
Works
● Pseudoramdom Noise
● Data Encryption
● Link Encryption
● VPN
s1170132 Manamu Abe
s1170133 Keigo Amma
s1170144 Ryo Kanno
s1170145 Masataka Kubota

2. Pseudoramdom Noise
● In cryptography,
pseudorandom noise
(PRN) is signal similar
to noise which satisfies
one or more of the
standard test for
statistical randomness.

3. Data Encryption
● Data encryption
is a process in
which plaintext
data is
converted into
ciphertext so
that it cannot be
read.

4. Link Encryption
● Link encryption is the
data security process
of encrypting
information at the
data link level as it is
transmitted between
two points within a
network.

5. VPN
●VPN(Virtual Private
Network) is service to
connect data
communications
between systems.
●
We can use public
lines like common
carrier leased lines with
VPN

6. REFERENCE
 Pseuderandom Noise
http://dimtel.com/_media/support/notes/tek00012.png?w=&h=&cache=cache
http://en.wikipedia.org/wiki/Pseudorandom_noise
 Data Encryption
http://www.wisegeek.com/what-is-data-encryption.htm
http://www.filibeto.org/sun/lib/nonsun/oracle/11.1.0.6.0/B28359_01/network.111/b28530/asotrans.htm
 Link Encryption
http://searchsecurity.techtarget.com/sDefinition/0,,sid14_gci526309,00.html
http://www.palowireless.com/bluearticles/cc1_security1.asp
 VPN
http://en.wikipedia.org/wiki/Vpn
http://computer.howstuffworks.com/enlarge-image.htm?terms=vpn+-phantom&page=0