Cryptography

Mais informações

Oyinyioza Edi-lawani STAR Report

por oyinyioza edilawani

IS116: Chap 12 - Secure Computer

por Gary Sibbitts

Full-time Physiotherapist $85,000 Brampton/Mississauga/Oakville Future Career

por Dhaliwal Arjun

Instructor Training

por Kelly Rasmussen

Cryptography

Important terms

Key space

Number of possible keys that can be created from an algorithm

Key

Whats used to turn Plaintext->Ciphertext

Description

Ciphertext->Plaintext

Encryption

Plaintext->Ciphertext

Cipher

Encryption algorithm/technique

Ciphertext

Encrypted text

Plaintext

Readable text

What is it

Needs key to convert it back to readable texts

Converts readable texts into a form which we cannot read

Encryption Cipher

Vigenenere

Uses 26*26 a-z grid

rot 13

Letter + 13 = letter

Caesar

Letter + 3= letter

Authentication

One's identity

non-repudiation

Sender did send the data

Integrity

Received data isn't tempted with or altered

Confidentiality

Can only be seen by intended people