1. How Encryption for Strong
Security Work
Member:
s1160138 Wataru Tamura
s1160139 Ryo Tayama
s1160140 Kiyoto Tanji
s1160142 Satoshi Tsuchida
2. Networks use encryption for strong security
Data encryption
●
File encryption
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Link encryption
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3. Data encryption
A data encryption
●
program uses a string
of numbers called a
key.
A key create a stream
●
of data combining the
real information with
a pseudorandom
stream of bits.
4. File encryption
File encryption protects files in central servers
●
and mass-storage devices from being read or
changed without an encryption key.
Local file encryption also protects data from
●
physical instruction.
5. Link encryption
The PC's encrypted
●
data, enclosed in
unencrypted TCP/IP
and Ethernet packets,
crosses the network.
Routers can use
●
encryption between
themselves to protect
the entire stream of
data.
