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CRYPTOGRAPHY - Coggle Diagram
CRYPTOGRAPHY
use codes
understood: (know: code)
key
made: 64 binary digits
56 bits: randomly generated
8 bits: error detection
ruled-based --> calculations
Algorithms
2 types of cryptography
according to the type of key
Asymmetrical
public key / private key
only private key can decipher the message
Symmetrical
private / secret key
uses the same key
drawback: have access
method of (protecting / hiding) information
Virtual Private Network
private network set up online
main types
Intranet
connects different company offices
for: employers
Extranet
clients, suppliers, partners
secure access: (company’s network)
Access
person to enter (private network) from outside the company or office
2 proces
Encryption
cleartext --> cyphertext
Decryption
cyphertext
--> cleartext
Modern C.
4 objectives
Confidentiality
Integrity
Non-repudiation
Authentication