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IrIs BIometrIC modeL
1.3.2 Means of Defense at the Level of Data and eir
Transmission across the Network
is section presents various techniques and protocols that protect
data or private information transmitted over a network. ese tech-
niques are data encryption, the IPSec protocol, and the SSL protocol.
1.3.2.1 Data Encryption According to William Stallings (1999),
cryptography aims to be able to transmit information in a secure
manner based on a sequence of operations:
• e sender encrypts its message according to a process estab-
lished by the receiver or by itself.
• e message is sent via any transmission.
• e receiver decrypts the message using the reverse process.
e data encryption function is to ensure the security of access to ...