gwp week13

Group Web Presentation week 13

How Encryption for Strong Security Works

s1160020 Kotomi Ishida s1160022 Yuki Izumi

s1160023 Kazuya Ito s1160026 Masahiro Inoue

Encryption for strong security

Network use various encryption systems that help my private from others. So we must encrypt information when we use

Internet.

Data Encryption

● The real data is buried in the pseudorandom “noise.”This is called data encryption.

File Encryption

● Local file encryption protects data from physical intrusion

Link Encryption

● This is an approach to communications security that encrypts and decypts all traffic at each end of communications line.

Key

In cryptography, a key is a piece of information (a parameter) that determines the functional output of a cryptographic algorithm or cipher. Without a

key, the algorithm would have no result. In encryption, a key specifies the particular

transformation of plaintext into ciphertext, or vice versa during decryption. Keys are also used in other cryptographic algorithms, such as digital signature schemes and message authentication

codes.